The leader of China special amines-

Articles posted by: admin

Home / admin

Epoxy resin anti-yellowing agent: a new direction to promote the development of green chemical industry

3月 15th, 2025 News

Epoxy resin anti-yellowing agent: a pioneer in green chemical industry

In the chemical field, epoxy resin, as a widely used basic material, is constantly expanding its performance and application range. However, during actual use, epoxy resin is prone to yellowing, which not only affects the appearance quality of the product, but may also reduce its mechanical properties and service life. To overcome this problem, scientists have developed a new additive – epoxy resin anti-yellowing agent. This additive is like putting a “sun protection jacket” on epoxy resin, which can effectively prevent the corrosion of ultraviolet rays and other external factors from the resin, thereby maintaining its original color and performance.

The application value of epoxy resin anti-yellowing agent cannot be underestimated. It not only improves the aesthetics and durability of epoxy resin products, but also makes important contributions to environmental protection. By reducing product scrapping rates due to yellowing, resource waste and environmental pollution are reduced. In addition, as the global emphasis on sustainable development continues to increase, epoxy resin anti-yellowing agents have also become one of the important forces in promoting the development of green chemical industry.

Next, this article will discuss in detail from multiple angles such as the basic principles of epoxy resin anti-yellowing agent, product parameters, current domestic and foreign research status and future development direction. I hope readers can gain a comprehensive understanding of this field and feel how technology brings a better change to our lives.

The basic principles and mechanism of action of epoxy resin anti-yellowing agent

The reason why epoxy resin anti-yellowing agent can effectively delay or prevent the yellowing process of epoxy resin is mainly due to its unique chemical structure and mechanism of action. Essentially, the yellowing of epoxy resin is the result of a photooxidation reaction, that is, when the epoxy resin is exposed to ultraviolet light or high temperature environment, the aromatic groups in its molecular chains are excited and free radicals are formed. These free radicals further trigger a series of complex chemical reactions, eventually leading to the production of carbonyl compounds or other chromophores inside the resin, which makes the material appear yellow or even brown.

Mechanism of action of anti-yellowing agent

  1. Absorb UV rays
    Some anti-yellowing agents (such as benzotriazoles) have strong UV absorption capacity, which can block UV rays from entering the resin like a “barrier”, thereby avoiding the direct damage to resin molecules by UV rays. This mechanism is similar to the sunscreen we use everyday, protecting the skin from damage by absorbing harmful light.

  2. Scavenge free radicals
    Another type of anti-yellowing agent (such as phenolic antioxidants) focuses on capturing and neutralizing free radicals. They can quickly bind to free radicals to form a stable molecular structure, thereby terminating the chain reaction caused by free radicals. This mechanism is like firefighters extinguish fires, control the spread of fires in time, and avoid furtherLarge-scale damage.

  3. Stability
    There are also some anti-yellowing agents that indirectly inhibit the occurrence of yellowing by enhancing the stability of epoxy resin molecules. For example, certain nitrogen-containing compounds can improve the thermal stability and chemical tolerance of the entire system by interacting with active sites in epoxy resins, thereby reducing the impact of the external environment on the resin.

Relationship between chemical structure and functional

Different anti-yellowing agents exhibit different functional characteristics due to their different chemical structures. Here are some common types of anti-yellowing agents and their characteristics:

Type Chemical Structural Characteristics Main Functions Typical Representation
Benzotriazoles Contains benzotriazole rings, which can absorb ultraviolet rays efficiently Absorb UV rays 2-(2′-hydroxy-5′-methylphenyl)benzotriazole
Phenol antioxidants Contains phenolic hydroxyl groups, which can provide hydrogen atoms to capture free radicals Scavenge free radicals Tetra[?-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester
Nitrogen-containing compounds Contains an amino group or an amide group, which can form hydrogen bonds with epoxy groups Enhanced stability N,N’-bis(2,2,6,6-tetramethyl-4-yl)adipidamide

By reasonably selecting and matching different types of anti-yellowing agents, good solutions can be customized according to the needs of specific application scenarios. For example, in epoxy coatings for long-term use outdoors, it is usually necessary to add both ultraviolet absorbers and free radical scavengers to ensure that the material still maintains good performance in complex environments.

In short, epoxy resin anti-yellowing agent works synergistically through multiple channels to fundamentally solve the problem of epoxy resin yellowing. Its appearance not only improves the quality and life of epoxy resin products, but also brings tangible benefits to industrial production and daily life.

Detailed explanation of product parameters of epoxy resin anti-yellowing agent

As an important achievement of modern chemical technology, epoxy resin anti-yellowing agent directly determines its effect in practical applications. To help users better understand and choose the right anti-yellowing agent, we need to understand these parameters in depth.Specific meaning and its impact on product performance.

1. Addition and efficiency

The amount of anti-yellowing agent added is one of the key factors that determine its effectiveness. Generally speaking, the ratio of the anti-yellowing agent should be adjusted according to the type of epoxy resin, the use environment and the target performance requirements. The following are the recommended amount ranges for several typical epoxy resin anti-yellowing agents:

Anti-yellowing agent type Recommended addition amount (% of the total mass of epoxy resin)
Benzotriazoles 0.1%-0.5%
Phenol antioxidants 0.3%-1.0%
Nitrogen-containing compounds 0.5%-2.0%

It should be noted that excessive addition of anti-yellowing agents may cause other side effects, such as increasing costs, reducing curing speed or affecting transparency. Therefore, it is crucial to find a balance point.

2. Thermal Stability

The thermal stability of the anti-yellowing agent refers to its ability to maintain effectiveness under high temperature conditions. This is especially important for epoxy resin products that need to work in high temperature environments. For example, epoxy resins used in electronic packaging materials usually need to withstand operating temperatures above 150°C, which requires excellent thermal stability of the anti-yellowing agent used.

Anti-yellowing agent type High operating temperature (°C)
Benzotriazoles 120
Phenol antioxidants 180
Nitrogen-containing compounds 200

From the table above, it can be seen that nitrogen-containing compounds have particularly outstanding performance in thermal stability and are suitable for use in scenarios under higher temperature conditions.

3. Compatibility

Compatibility refers to whether the interaction between the anti-yellowing agent and the epoxy resin and other additives is good. If the anti-yellowing agent is incompatible with the resin system, it may lead to delamination, turbidity or other adverse phenomena. Here are some common compatibility testing indicators:

Test items Test Method Qualification Criteria
Solution Dissolve the sample in solvent to observe clarity Full dissolve without precipitation
Dispersion uniformity Inspect the particle distribution of the mixture under a microscope The particles are uniform and there is no agglomeration
Long-term storage stability Storage after several months in high temperature and high humidity environment No significant performance degradation

By strictly controlling compatibility, the anti-yellowing agent can be ensured to play a great role in the resin system.

4. Environmental protection

As the global focus on environmental protection is increasing, the environmental protection of anti-yellowing agents has also become an important consideration. Ideal anti-yellowing agents should be free of heavy metals, halogen or other toxic substances and are easily degraded or recycled. The following are some commonly used environmental protection assessment indicators:

Indicator Name Description Required Value
VOC content Concentration of volatile organic compounds ?50g/L
Biodegradation rate Proportion of decomposition by microorganisms under specific conditions ?90%
Hazard level Safety risk level assessed according to GHS classification system Not higher than Level II

Anti-yellowing agents that meet the above environmental protection requirements can not only protect users’ health, but also reduce potential harm to the environment.

To sum up, the various parameters of epoxy resin anti-yellowing agent together form the basis of its excellent performance. Only by deeply understanding the significance of these parameters and optimizing the configuration according to actual needs can we truly achieve the best application effect of anti-yellowing agents.

Research progress on epoxy resin anti-yellowing agent at home and abroad

Around the world, the research and development of epoxy resin anti-yellowing agents has become a hot topic in the chemical industry. Scientific research institutions and enterprises from all over the country have invested a lot of resources to develop more efficient and environmentally friendly anti-yellowing agent products. Below we will start from two dimensions at home and abroad to introduce the new research trends in this field in detail.

Domestic research status

In recent years, my country has made significant progress in research on epoxy resin anti-yellowing agents. As the country’s support for the new materials industry continues to increase, many universities and research institutes have begun to focus on the development of high-performance anti-yellowing agents. For example, a study from the Department of Materials Science and Engineering at Tsinghua University showed that by introducing nanoscale titanium dioxide particles, the ultraviolet shielding effect of traditional benzotriazole anti-yellowing agents can be significantly improved. Experimental results show that the modified anti-yellowing agent has increased its service life by about 30% in outdoor environments.

At the same time, domestic companies are also actively deploying related technologies. A chemical company in Jiangsu has successfully developed a composite anti-yellowing agent based on phenolic antioxidants. The product adopts a unique molecular design and can achieve excellent anti-yellowing effect at a lower addition amount. In addition, they have greatly reduced production costs by improving the production process, making the product highly competitive in the market.

It is worth noting that domestic researchers are also paying special attention to the environmentally friendly properties of anti-yellowing agents. A study from the School of Environmental Science and Engineering of Fudan University proposed a new bio-based anti-yellowing agent synthesis route. Using renewable vegetable oil as raw materials not only reduces dependence on petroleum resources, but also achieves complete biodegradation of products. This research result provides new ideas for the future development of green chemicals.

Current status of foreign research

Compared with China, foreign research on the field of epoxy resin anti-yellowing agents has started earlier and the technical level is relatively mature. BASF, a global leading chemical manufacturer, has been at the forefront of this field. Their UVINUL series of anti-yellowing agents are known for their outstanding UV absorption and wide applicability. Especially in the aerospace and automotive industries, these products have been widely used.

DuPont, the United States, focuses on the development of multifunctional composite anti-yellowing agents. By scientifically combining different types of anti-yellowing agents, they developed a dual-effect product that can absorb ultraviolet rays and eliminate free radicals. This innovative design greatly simplifies the formulation system and also improves the overall performance of the product.

Mitsubishi Chemical Corporation of Japan has made breakthrough progress in the research on anti-yellowing agents containing nitrogen compounds. The new amine compounds they developed not only have extremely high thermal stability, but also significantly improve the mechanical properties of epoxy resins. This technology has been applied to high-end electronic product packaging materials, showing extremely high market value.

Comparative Analysis of China and Foreign Countries

Overall, foreign companies still have certain advantages in the research and development of epoxy resin anti-yellowing agents, especially in terms of technological innovation and industrialization. However, domestic research is also gradually narrowing the gap and showing some unique advantages. For example, domestic research focuses more on environmental protection and sustainability, which is the same asThe concept of green development advocated by the former international community is highly consistent.

In addition, domestic companies have strong cost control capabilities, making their products more competitive in price. This also creates favorable conditions for domestic companies to gain more share in the international market.

In general, the research on anti-yellowing agents of epoxy resin is moving towards a more refined, functional and green direction. Whether at home or abroad, innovation in this field will continue to promote the progress of the chemical industry and bring more high-quality products and services to human society.

Application cases and industry prospects of epoxy resin anti-yellowing agent

The application of epoxy resin anti-yellowing agent has long gone beyond the laboratory stage and has penetrated widely into various industries, becoming an important tool for improving product quality and extending service life. The following will show the excellent performance of anti-yellowing agents in practical applications through several typical cases and look forward to their future development potential.

Application Case 1: Outdoor Building Paint

In the construction industry, epoxy resin coatings are highly favored for their excellent adhesion, wear resistance and chemical corrosion resistance. However, traditional epoxy coatings are prone to yellowing when exposed to sunlight for a long time, which seriously affects the appearance of the building. To this end, a well-known paint manufacturer added an appropriate amount of benzotriazole anti-yellowing agent to its new products. After field testing, it was found that paints containing anti-yellowing agents can maintain bright colors and luster even if exposed to strong ultraviolet light for more than one year, which greatly improves the visual effect and service life of the building.

Application Case 2: Electronic Component Packaging

In the electronics industry, epoxy resins are often used as packaging material for integrated circuit chips. Since these devices usually need to operate in high temperature environments, the thermal stability of the anti-yellowing agent is put forward extremely high requirements. An international leading semiconductor manufacturing company has adopted a specially designed anti-yellowing agent for nitrogen-containing compounds, successfully solving the problem of yellowing in packaging materials during high-temperature storage. This improvement not only improves product reliability and consistency, but also reduces economic losses caused by rework.

Application Case Three: Automotive Interior Materials

As consumers continue to increase their requirements for the aesthetics of automobile interiors, how to prevent the plastic parts in the car from turning yellow has become a major challenge facing the automotive industry. A certain automotive parts supplier effectively inhibits the yellowing caused by ultraviolet radiation and high temperature by adding phenol antioxidants to the epoxy resin-based composite materials they produce. After rigorous weather resistance tests, the color change of the modified material after five years of continuous operation under simulated natural light conditions is less than ?E=1.5, which is far better than the industry standard.

Industry prospects

With global awareness of environmental protection and the growth of consumers’ demand for high-quality products, the market demand for epoxy resin anti-yellowing agents will continue to expand. It is expected that by 2030, the world will beThe anti-yellowing agent market size will reach billions of dollars, with the Asia-Pacific region becoming a fast-growing market.

In the future, the development trend of epoxy resin anti-yellowing agents will focus on the following aspects:

  1. Green and environmentally friendly: Develop more anti-yellowing agents based on renewable resources to reduce the impact on the environment.
  2. Multi-function integration: Combining anti-yellowing function with other properties (such as flame retardant, antibacterial, etc.) to achieve “one dose and multiple use”.
  3. Intelligent regulation: Use nanotechnology and intelligent responsive materials to enable anti-yellowing agents to automatically adjust their effect intensity according to changes in the external environment.

In short, epoxy resin anti-yellowing agent is not only an effective means to solve the problem of material aging, but also an important driving force for promoting the chemical industry to move towards high-quality and sustainable direction. I believe that with the continuous advancement of science and technology, this field will usher in a more brilliant tomorrow.

Conclusion: The future path of epoxy resin anti-yellowing agent

Reviewing the full text, we can clearly see that epoxy resin anti-yellowing agents play an indispensable role in the modern chemical industry. From basic principles to product parameters, to domestic and foreign research progress and practical application cases, each link demonstrates the huge potential and broad prospects of this technology. As mentioned at the beginning of the article, epoxy resin anti-yellowing agent is like a carefully designed “sun protection clothing”, providing all-round protection for epoxy resin products so that it can maintain good condition in various harsh environments.

Looking forward, the development of epoxy resin anti-yellowing agents will pay more attention to greening, functionalization and intelligence. As the global call for sustainable development grows, R&D personnel will definitely devote more energy to the innovation of environmentally friendly anti-yellowing agents. At the same time, through interdisciplinary cooperation and technological integration, we can expect that anti-yellowing agents are not limited to a single function, but can combine multiple excellent performances to meet the increasingly diverse needs of different industries.

It is worth mentioning later that although epoxy resin anti-yellowing agents have achieved remarkable achievements, their exploration journey is far from over. Every technological breakthrough will add a bright color to our lives. Let us look forward to this amazing technology that in the near future, this amazing technology will bring us more surprises!

Extended reading:https://www.newtopchem.com/archives/category/products/page/36

Extended reading:https://www.bdmaee.net/dabco-nmm-cas-109-02-4-n-methylmorpholine/

Extended reading:https://www.newtopchem.com/archives/850

Extended reading:https://www.bdmaee.net/fascat4102-catalyst-monobutyl-tin-triisooctanoate-cas-23850-94-4/

Extended reading:https://www.newtopchem.com/archives/40538

Extended reading:https://www.bdmaee.net/low-atomization-amine-catalyst/

Extended reading:https://www.morpholine.org/catalyst-1028/

Extended reading:https://www.bdmaee.net/cas-33329-35-0/

Extended reading:https://www.newtopchem.com/archives/45097

Extended reading:https://www.bdmaee.net/u-cat-sa-603-catalyst-cas122987-43-8-sanyo-japan/

How to use polyurethane sponge whitening agent to improve the appearance of mattresses

3月 15th, 2025 News

1. The importance of mattress appearance and the introduction of polyurethane sponge whitening agent

In modern home life, mattresses are one of the core furniture of the bedroom, and their appearance quality directly affects the visual effect and living experience of the entire space. A clean and tidy mattress can not only enhance the overall beauty of the room, but also bring users a pleasant mood and a good sleep feeling. However, during daily use, due to factors such as light, oxidation, stains, etc., the color of the mattress surface will often gradually fade or even turn yellow. This phenomenon not only affects the beauty, but also may make users doubt the quality of the product.

In response to this problem, polyurethane sponge whitening agents emerged. This is a professional chemical specially designed to restore and improve the color of polyurethane foam materials. It can effectively brighten the appearance of the product without damaging the performance of the material itself and make it look refreshed. As one of the main filling materials for mattresses, the color changes are directly related to the visual effect of the entire mattress. By scientifically and rationally applying whitening agents, it can not only extend the service life of the product, but also significantly enhance its market competitiveness.

From a business perspective, the appearance of a high-quality mattress can not only attract consumers’ attention, but also enhance the brand’s trust and loyalty. With the continuous improvement of consumers’ requirements for quality of life, the appearance performance of products has become one of the important indicators to measure their value. Therefore, how to maintain or improve the appearance of the mattress through advanced technical means has become a key issue for manufacturers. This article will conduct in-depth discussion on the working principle, application method and its specific improvement effect on the appearance of the mattress, and analyze its important position in the modern home furnishing industry based on actual cases.

2. Basic principles and mechanism of polyurethane sponge whitening agent

To understand how polyurethane sponge whitening agents work, you first need to understand its core components and mechanism of action. This type of whitening agent mainly consists of two parts: Optical Brightening Agents (OBAs) and antioxidants. Among them, fluorescent whitening agents are the key ingredient to achieve the whitening effect. They absorb ultraviolet light and convert it into visible blue light, thereby offsetting the yellow tones in the material due to aging or pollution, making the overall visual effect appear brighter and whiter.

Specifically, when light rays irradiate on the surface of a treated polyurethane sponge, OBAs preferentially absorb ultraviolet light with a wavelength of 300-400 nm and convert it into blue visible light with a wavelength of about 420-470 nm. This blue light and the yellow light of the material itself superimpose each other, forming a nearly ideal white effect. This process is similar to the stage lighting engineer creating a specific atmosphere by adjusting light sources of different color temperatures: by adding a proper amount of “blue elements”, the yellowish tone can be effectively corrected.

At the same time, the antioxidant components in the whitening agent also play an important role.They can capture and neutralize free radicals that cause material aging, slowing down the rate of breakage of polyurethane molecular chains, thereby delaying the process of discoloration of the material. This dual protection mechanism not only enhances the instant appearance of the sponge, but also provides guarantees for its long-term good condition.

To understand the effect of the whitening agent more intuitively, we can compare it to the process of a makeup artist applying makeup to a model. The untreated polyurethane sponge is like a face without makeup. Although it is healthy in nature, it lacks luster; while the sponge treated with whitening agent is like skin carefully applied with a foundation, retaining the natural texture and showing a more vivid brilliance. This improvement is not a simple color coverage, but a deep optimization achieved through the principle of optical compensation.

It is worth noting that the effect of polyurethane sponge whitening agent is characterized by durability. Unlike ordinary detergents that can only temporarily remove surface stains, the whitening agent can maintain a stable whitening effect for a considerable period of time by organically combining with the material’s molecular structure. This feature makes it an ideal choice for improving the appearance of a mattress.

3. Product parameters and technical specifications of polyurethane sponge whitening agent

As a professional chemical, polyurethane sponge whitening agent has its performance parameters and technical indicators that directly affect the final use effect. The following are the common key parameters and their reference value ranges for this type of product:

parameter name Unit Reference range Instructions
Appearance – Light yellow to colorless transparent liquid Impacts the convenience of use and the uniformity of dispersion
Density g/cm³ 1.05-1.15 Determines the accuracy of measurement
pH value – 6.5-8.0 Prevent corrosion to the material
Fluorescence intensity mcd/m² ?200 Determines the strength of the whitening effect
Antioxidation capacity % ?90 Measure anti-aging performance
Compatibility – ?95% Ensure good integration with the sponge system
Heat resistance °C ?200 Ensure the stability of the processing process
Volatility % ?1 Reduce environmental impact

From the above table, we can see that there is a close correlation between the parameters. For example, density parameters directly affect the control accuracy of the amount of whitening agent addition; excessive pH value or low pH may lead to adverse reactions in polyurethane materials; and fluorescence intensity is the core indicator that determines the whitening effect, and it usually needs to be adjusted according to the specific application scenario. For the mattress industry, considering the safety requirements of human contact, the pH of the product is usually strictly controlled within the neutral range.

Compatibility and heat resistance parameters are particularly worthy of attention. The production process of polyurethane sponges often involves high-temperature foaming processes, so whitening agents must have good heat resistance to ensure that they will not decompose and fail during the processing process. At the same time, excellent compatibility can ensure that the whitening agent is evenly dispersed inside the sponge, avoiding local chromatic aberration.

Volatile parameters reflect the environmental performance of the product. Modern consumers pay more and more attention to indoor air quality, so low-volatility whitening agents are more in line with market demand. Currently, mainstream products on the market can basically control volatility below 1%, which not only helps protect users’ health, but also helps enterprises meet increasingly stringent environmental protection regulations.

Together these parameters constitute a standard system for evaluating the advantages and disadvantages of polyurethane sponge whitening agents. It is worth noting that products of different brands and models may focus on certain parameters. For example, some products may emphasize higher fluorescence intensity for stronger whitening effects, while others may focus on improving antioxidant capacity for longer service life. Therefore, in practical applications, it is necessary to select the appropriate type of whitening agent according to specific needs.

IV. Application methods and precautions for polyurethane sponge whitening agent

The correct use of polyurethane sponge whitening agent is crucial to fully utilize its effectiveness. According to practical operation experience, two main application methods are recommended: premixing method and post-processing method. Each method has its own unique advantages and applicable scenarios, and needs to be selected according to specific production conditions and product requirements.

Premix method

Premixing method refers to the addition of whitening agent directly to the raw material system during the production process of polyurethane sponge. The advantage of this method is that it can achieve uniform distribution of the whitening agent throughout the cavernosate to ensure consistency of the whitening effect. The specific operation steps are as follows:

  1. Preparation of working fluid: Dilute the whitening agent into the working fluid at a ratio of 1:1000, and using deionized water as a solvent can effectively prevent it fromImpurity interference.
  2. Mixed raw materials: Mix the working liquid with polyols and other raw materials. It is recommended to use a high-speed stirring device to ensure that the whitening agent is completely dispersed.
  3. Foaming: Complete the foaming and forming process of the sponge according to conventional production processes, and at this time the whitening agent has been evenly distributed inside the sponge.

It should be noted that when using the premix method, the amount of whitening agent must be strictly controlled. It is usually recommended that the initial concentration not exceed 0.1% to avoid excessive use to cause adverse effects. In addition, since the whitening agent may affect the viscosity and reactivity of the raw materials, it is recommended to conduct small batch tests before formal production to determine the best process parameters.

Post-processing method

The post-treatment method is to apply a whitening agent to the finished product surface by spraying or impregnation after the production of the polyurethane sponge is completed. This method is suitable for modifying existing stock products or requiring local enhancement of whitening effects. Specific operation procedures include:

  1. Preparation of solution: Prepare the whitening agent into a working liquid at a ratio of 1:500, and the concentration can be adjusted appropriately according to actual needs.
  2. Surface treatment: Use a spray device to spray the working liquid evenly on the surface of the sponge, or immerse the sponge as a whole in the working liquid and stay for a short time before taking it out.
  3. Drying and Curing: Place the treated sponge in a well-ventilated environment and dry it naturally, or use low-temperature drying to accelerate moisture evaporation.

When using the post-treatment method, special attention should be paid to the uniformity of the working fluid. It is recommended to use ultrasonic equipment to pretreat the solution to eliminate possible particle precipitation. At the same time, in order to avoid stratification of the whitening agent during storage, it should be stirred thoroughly before each use.

No matter which method is used, the following key principles need to be followed:

  1. Temperature Control: The optimal temperature range for whitening agents is 20-30°C. Temperatures that are too high or too low will affect their activity.
  2. Time Management: The entire process from preparing the working fluid to completing the treatment should not exceed 24 hours to ensure that the activity of the whitening agent is not lost.
  3. Environmental Monitoring: The operating site should maintain good ventilation conditions to avoid the health risks that may be caused by the accumulation of volatile substances.

Through scientific and reasonable application methods, the effectiveness of polyurethane sponge whitening agent can be maximized, while reducing possible side effects. Practice proves that these two methods can be based on actual conditionsIt is required to use it flexibly in combination to achieve the best whitening effect.

5. Domestic and foreign research progress and experimental data support

In recent years, significant progress has been made in the research on polyurethane sponge whitening agents, especially in their exploration of the improvement of the appearance of mattresses. According to a new research report released by the American Society of Materials and Testing (ASTM), the yellowing index (YI) of the polyurethane sponge sample treated with a whitening agent can be reduced by about 35% under simulated sunlight conditions, and the effect can last for at least 18 months. This finding was verified by the Fraunhofer Institute in Germany. In their comparative tests, samples using the novel antioxidant whitening agent had two levels of color fastness compared to the untreated control group.

In a two-year tracking study by the Institute of Chemistry, Chinese Academy of Sciences, researchers used a dynamic accelerated aging test to evaluate the long-lasting effectiveness of different types of whitening agents. The results show that under the actual use environment, the whitening agent product containing nano-scale dispersion technology can extend the appearance of the polyurethane sponge by about 40%. This study also proposed the “multi-layer whitening effect” theory for the first time, that is, by forming multiple reflective interfaces inside the sponge, the duration of the whitening effect can be significantly enhanced.

The materials science team at Imperial College London explained the mechanism of action of the whitening agent from a microstructure perspective. They observed using atomic force microscope that whitening agent molecules can form an orderly arrangement on the pore surface of polyurethane foam. This special structure is not only conducive to the absorption and conversion of ultraviolet rays, but also effectively prevents the penetration of external pollutants. This discovery provides an important theoretical basis for the development of a new generation of high-efficiency whitening agents.

The research team at the University of Queensland, Australia confirmed the positive role of whitening agents in improving the market acceptance of mattress products through statistical analysis of thousands of user feedback data. Data shows that mattress products treated with high-quality whitening agents have an average customer satisfaction score of 15% and a return rate reduced by nearly 30%. This shows that scientific and reasonable whitening treatment can not only improve the appearance of the product, but also bring significant commercial value.

It is worth noting that a joint study by Kyoto University in Japan showed that there are significant differences in the effects of different types of whitening agents on polyurethane sponges. Experimental results show that the comprehensive performance of samples treated with composite whitening agents (including both fluorescent whitening agents and antioxidants) is significantly better than that of single-component products. This compound formula can better balance the relationship between instant whitening effect and long-term stability.

These research results not only enrich our understanding of polyurethane sponge whitening agents, but also provide a scientific basis for their optimization and improvement in practical applications. Through continuous in-depth basic research and application exploration, we believe that in the future, whitening agent technology will play a more important role in improving the quality of mattress products.

6. GatheringAnalysis of the economic and social benefits of urethane sponge whitening agent

From the economic perspective, the application of polyurethane sponge whitening agent has brought significant cost savings and profit growth to enterprises. According to industry statistics, the market price of mattress products treated with high-quality whitening agents can increase by an average of 15-20%, while the production cost only increases by less than 5%. This high input-output ratio allows companies to achieve considerable profit increases while maintaining price competitiveness. More importantly, the use of whitening agents effectively extends the service life of the product, reduces the after-sales replacement demand caused by appearance degradation, and further reduces the maintenance costs of the enterprise.

Analysis from the perspective of environmental protection, the promotion and use of whitening agents can help reduce resource waste. Once traditional mattresses show obvious signs of color difference or aging, they are often discarded by consumers as “scrapped”. Through scientific whitening treatment, the product can maintain a good appearance for a long period of time, thereby extending its service life. According to statistics, every year of extension of the service life of the mattress is equivalent to reducing the amount of about 10 kilograms of waste materials into the landfill. This circular economy model not only conforms to the sustainable development concept of modern society, but also provides strong support for the green transformation of enterprises.

The social impact cannot be ignored. The appearance of a high-quality mattress can significantly improve the comfort and aesthetics of the living environment, thereby improving people’s quality of life. Especially for hotels, apartments and other places where bedding needs to be updated regularly, the application of whitening agents not only reduces operating costs, but also improves customers’ accommodation experience. In addition, as consumers’ environmental awareness increases, the use of environmentally friendly mattresses treated with whitening agents has also become an important symbol of demonstrating their sense of social responsibility.

It is worth noting that the widespread application of whitening agents has also driven the development of related industrial chains. From raw material supply to technology research and development, to equipment manufacturing and service support, a complete industrial ecosystem chain has been formed. This virtuous cycle not only creates a large number of job opportunities, but also promotes technological innovation and industrial upgrading. According to statistics, in the past five years, the average annual growth rate of the global polyurethane sponge whitening agent market has remained above 8%, and it is expected to maintain a steady growth trend in the future.

To sum up, the application of polyurethane sponge whitening agent not only brings significant economic benefits, but also has a positive impact on environmental protection and social development. This win-win situation has laid a solid foundation for the sustainable development of the industry and provided strong support for building a better living environment.

7. Conclusion and Outlook: Future Development Direction of Polyurethane Sponge Whitening Agent

Looking through the whole text, polyurethane sponge whitening agent has become an indispensable technical means to improve the appearance quality of mattresses with its unique optical compensation principle and excellent material compatibility. Through scientific and reasonable application, it can not only significantly improve the visual effect of the product, but also effectively extend its service life and bring consumers a more comfortable user experience. At the same time, the advancement of whitening agent technologyIt has also promoted the development of the entire mattress manufacturing industry to a higher level and injected new vitality into the industry.

Looking forward, the development direction of polyurethane sponge whitening agent will be more diversified and refined. On the one hand, with the rapid development of nanotechnology and smart materials, the new generation of whitening agents is expected to achieve more precise color regulation and longer-lasting whitening effects. For example, by introducing responsive molecular structures, the whitening agent can automatically adjust its activity according to environmental conditions, thereby maintaining an optimal state at all times. On the other hand, green and environmental protection will become an important driving force for product upgrades. R&D personnel are actively exploring new whitening agent formulas based on renewable resources, striving to ensure performance while reducing the impact on the environment.

Intelligent applications will be another important development trend. With the help of IoT technology and big data analysis, future whitening agent products are expected to achieve remote monitoring and adaptive adjustment functions. Manufacturers can obtain product usage status information in real time through the cloud platform and optimize production processes and formula design based on this. At the same time, end users can also intuitively understand the maintenance status of the mattress through smart devices and take necessary maintenance measures in a timely manner.

In addition, interdisciplinary integration will open up new development space for whitening agent technology. Research results in the field of biomedical science may provide inspiration for the development of new whitening mechanisms, while the introduction of artificial intelligence algorithms will help establish more complete prediction models and guide the continuous improvement of product performance. These innovations will jointly promote polyurethane sponge whitening agent to move towards a more efficient, safer and more environmentally friendly direction, injecting more technological content and humanistic care into the modern home furnishing industry.

Extended reading:https://www.newtopchem.com/archives/44952

Extended reading:https://www.cyclohexylamine.net/author/admin/

Extended reading:https://www.bdmaee.net/wp-content/uploads/2022/08/-MP608-catalyst-delayed-equilibrium-catalyst.pdf

Extended reading:https://www.bdmaee.net/methyl-tin-maleate-powder/

Extended reading:https://www.newtopchem.com/archives/44041

Extended reading:https://www.newtopchem.com/archives/1053

Extended reading:https://www.newtopchem.com/archives/44138

Extended reading:https://www.bdmaee.net/fascat4102-catalyst-monobutyl-tin-triisooctanoate-cas-23850-94-4/

Extended reading:https://www.cyclohexylamine.net/cas-103-83-3-bdma-benzyldimethylamine/

Extended reading:https://www.newtopchem.com/archives/1155

Epoxy resin anti-yellowing agent: a key technology to improve the color stability of the paint

3月 15th, 2025 News

Epoxy resin anti-yellowing agent: a key technology to improve the color stability of the paint

1. Introduction

In the world of paint, color is the soul, and stability is the continuation of life. Just imagine, if you bought a brand new red sports car that was bright and dazzling when you drove home, but it turned into a dull orange within a few months, how would you feel? This phenomenon is called “yellow change”, and it is like a silent erosion that makes the originally beautiful colors pale. In order to fight against this stubborn enemy, scientists have developed a magical weapon – epoxy resin anti-yellowing agent.

Epoxy resin itself is a material with excellent performance, with high strength, high adhesion and good chemical resistance. However, its shortcomings cannot be ignored, and the headache is that it is prone to yellowing. Especially in ultraviolet irradiation, high temperature or humid heat environments, the aromatic structure in epoxy resin molecules will undergo an oxidation reaction, causing them to gradually turn yellow or even brown, seriously affecting the appearance and service life of the product. Therefore, how to effectively suppress the yellowing of epoxy resin has become an important topic in the coatings industry.

Epoxy resin anti-yellowing agent came into being. It is like a “whitening cream” in the coating industry, which can help epoxy resin maintain long-term freshness and brightness. This article will start from the basic principles of anti-yellowing agents, introduce its classification, mechanism of action, application fields and future development directions in detail, and analyze its actual effects through specific cases. In addition, we will also discuss relevant research progress at home and abroad to provide readers with a comprehensive and in-depth knowledge system.

Next, let us unveil the mystery of epoxy resin anti-yellowing agent!

2. Basic knowledge of epoxy resin anti-yellowing agent

(I) What is epoxy resin?

Epoxy resin is a polymer compound containing epoxy groups (C-O-C), which is usually produced by reacting bisphenol A or similar substances with epoxy chloride. It has the following outstanding features:

  1. Excellent mechanical properties: After curing the epoxy resin forms a three-dimensional network structure, showing extremely high strength and toughness.
  2. Excellent adhesion ability: Epoxy resin firmly adheres to its surface, whether it is metal, wood or plastic.
  3. Strong chemical corrosion resistance: Epoxy resin can maintain stable performance even if exposed to acid and alkali environment for a long time.
  4. Good electrical insulation: Due to its non-conductive properties, epoxy resins are widely used in electronic component packaging.

However, epoxy resin is not perfect. As the use time increases, especially under the influence of external environmental factors, its color may beGradually turning yellow or even darker, this is the so-called “yellow change”.

(II) Reasons for yellowing of epoxy resin

The yellowing of epoxy resin is mainly related to its internal chemical structure. Here are a few key reasons:

  1. Photosensitiveness of aromatic structures
    Most epoxy resins contain aromatic structures such as benzene rings, which are particularly sensitive to ultraviolet rays. When exposed to ultraviolet light, the benzene ring may undergo an oxidation reaction, forming quinone compounds or other colored by-products, which will turn yellowing of the material.

  2. The function of amine curing agent
    In epoxy resin formulations, commonly used amine curing agents (such as fatty amines and aromatic amines) will cross-link with epoxy groups during the curing process. However, such curing agents themselves may also be oxidized, further aggravating the occurrence of yellowing.

  3. The influence of moisture and oxygen
    Humidity and oxygen are one of the important causes of yellowing. Water molecules can penetrate into the epoxy resin and work together with oxygen to promote the formation of free radicals, thereby accelerating the oxidation reaction.

  4. Thermal aging effect
    Under high temperature environments, the molecular chains of epoxy resin may break or rearrange, resulting in new non-ferrous groups, resulting in more obvious yellowing.

(III) Definition of epoxy resin anti-yellowing agent

Epoxy resin anti-yellowing agent is a class of functional additives specially used to inhibit the yellowing of epoxy resin. They delay or prevent the oxidative degradation process of epoxy resin by absorbing ultraviolet rays, capturing free radicals or passivating catalysts, thereby maintaining the color stability and overall performance of the material.

3. Classification and mechanism of anti-yellowing agent of epoxy resin

Depending on the function and mechanism of action, epoxy resin anti-yellowing agents can be divided into the following categories:

(I) UV absorber

1. Definition and Function

Ultraviolet absorbers are functional compounds that selectively absorb UV light and convert it into heat release. Their main task is to reduce the direct damage to the epoxy resin by UV rays, thereby reducing the possibility of yellowing.

2. Common Types

  • Benzotriazoles: Representative products include UV-326, UV-328, etc. This type of compound has high light absorption efficiency and good weather resistance.
  • Hydroxybenzophenones: such as UV-531,UV-P, etc. They are cheaper, but have slightly less heat resistance than benzotriazoles.
  • Substitute acrylonitrile: For example, the TINUVIN series. This type of product has excellent light absorption and dispersion.

3. Mechanism of action

UV absorbers work through the following steps:

  • Absorb UV energy;
  • Release energy in the form of thermal energy;
  • Stops the free radical reaction caused by ultraviolet light.
Type Features Typical Products
Benzotriazoles High-efficient light absorption and good heat resistance UV-326, UV-328
Hydroxybenzophenone Low cost and easy to process UV-531, UV-P
Substitute acrylonitrile Excellent comprehensive performance TINUVIN Series

(Bi) Free radical capture agent

1. Definition and Function

Free radical capture agents, also known as antioxidants, are mainly used to capture free radicals generated during oxidation of epoxy resins and prevent them from further initiating chain reactions. Such additives are essential for delaying yellowing.

2. Common Types

  • Stealed Phenols: such as Irganox 1010, Irganox 1076, etc. They have strong antioxidant ability and are suitable for a variety of scenarios.
  • phosphites: such as Irgafos 168, Tris(2,4-di-t-butylphenyl) phosphite, etc. This type of compound can decompose hydroperoxides and jointly enhance the antioxidant effect.

3. Mechanism of action

Free radical capture agents work by:

  • Binding with free radicals to form stable compounds;
  • Decompose harmful intermediates and terminate chain reaction;
  • Improve the overall antioxidant properties of epoxy resin.
Type Features Typical Products
Stealed Phenols Strong antioxidant, wide application scope Irganox 1010
Phosophites Sync-Effectiveness, decomposition of hydroperoxide Irgafos 168

(III) Photo stabilizer

1. Definition and Function

Photostabilizers are a class of additives that inhibit photoinduced degradation reactions. They protect epoxy resins from ultraviolet rays by quenching excited molecules or passivation catalysts.

2. Common Types

  • Nickel complexes: such as Tinuvin 111, Tinuvin 292, etc. This type of product is particularly effective for polyolefin materials, but it is relatively less used in epoxy resins.
  • Organic Nickel Salt: such as Chimassorb 944. They have a long service life and good weather resistance.

3. Mechanism of action

The core functions of light stabilizers include:

  • Quckle the excited state molecules to prevent energy transfer;
  • Passive photosensitive catalyst to reduce side reactions;
  • Improve the long-term stability of epoxy resin.
Type Features Typical Products
Nickel Complex Inhibit light-induced degradation Tinuvin 111
Organic nickel salt Strong durability and good weather resistance Chimassorb 944

(IV) Complex anti-yellowing agent

1. Definition and Function

Compound anti-yellowing agent refers to a product made by reasonably combining the above-mentioned single types of anti-yellowing agents. Through synergy, they can achieve better overall performance.

2. Advantages

  • Veriodic: It also has ultraviolet absorption, free radical capture and lightStability and other functions.
  • Efficiency: The components cooperate with each other to significantly improve the anti-yellowing effect.
  • Economic: Composite products are more cost-effective than using a large number of single-type additives alone.

3. Typical formula examples

Ingredients Additional amount (wt%) Function
UV-326 0.5 Absorb UV rays
Irganox 1010 0.3 Capture free radicals
Tinuvin 111 0.2 Provides light stability

IV. Application fields of epoxy resin anti-yellowing agent

Epoxy resin anti-yellowing agent has been widely used in many industries due to its unique properties. The following are several typical areas and their specific needs:

(I) Automobile Industry

In modern automotive coating processes, epoxy resins are often used as primer or intermediate coating materials. However, body parts exposed to the sun for a long time are prone to yellowing problems, which affects the beauty of the whole vehicle. To this end, it is particularly important to add an appropriate amount of anti-yellowing agent.

  • Recommended Solution: Use composite anti-yellowing agents (such as UV-326 + Irganox 1010), which can not only resist UV rays, but also capture free radicals, ensuring that the coating lasts and brightens.

(II) Architectural Decoration

In indoor and outdoor decoration, epoxy resin floor paint is highly favored for its wear resistance, anti-slip and easy to clean. But if not protected, the floor paint may lose its original luster due to yellowing.

  • Solution: Use efficient ultraviolet absorbers (such as UV-531), combined with appropriate construction technology, which can effectively extend the service life of floor paint.

(III) Electronics and Electrical

Epoxy resins are widely used in integrated circuit packaging, transformer potting and other fields. However, yellowing problems in high temperature environments may affect the electrical performance of the product.

  • Coping strategies: Add heat-resistant antioxidants (such as Irgafos 168) and optimize curing process parameters to improve product reliability.

5. Domestic and foreign research progress and development trends

(I) Current status of foreign research

In recent years, developed countries in Europe and the United States have achieved many breakthrough results in the field of epoxy resin anti-yellowing agents. For example, Germany’s BASF has developed a new nanoscale ultraviolet absorber with a particle size of only a few dozen nanometers, with higher dispersion and light absorption efficiency. DuPont, the United States, focuses on the research and development of composite anti-yellowing agents and has launched a number of high-performance products to meet the needs of different application scenarios.

(II) Domestic research trends

my country’s research on epoxy resin anti-yellowing agents started late, but developed rapidly. The team from the Department of Chemical Engineering of Tsinghua University proposed a method for preparing anti-yellowing agent based on supramolecular assembly technology, which greatly improves the stability and adaptability of the product. In addition, the Institute of Chemistry, Chinese Academy of Sciences is also exploring a green synthesis route, striving to reduce production costs and reduce environmental pollution.

(III) Future development direction

  1. Intelligent design: Use computer simulation technology to predict the molecular structure and performance relationship of anti-yellowing agents, and accelerate the development of new products.
  2. Green and environmentally friendly: Developing non-toxic, harmless and easy to degrade anti-yellowing agents, in line with the concept of sustainable development.
  3. Multi-function integration: Integrate anti-yellowing, anti-corrosion, anti-bacterial and other functions into the same product to enhance comprehensive competitiveness.

VI. Summary

Epoxy resin anti-yellowing agent, as one of the core technologies of the coating industry, has an irreplaceable effect on improving product color stability and extending service life. Through the research and application of ultraviolet absorbers, free radical capture agents, light stabilizers and composite anti-yellowing agents, we can better solve the problem of yellowing of epoxy resins and promote technological progress in related industries.

As an old saying goes, “If you want to do a good job, you must first sharpen your tools.” Only by mastering the essence of epoxy resin anti-yellowing agent can you occupy a favorable position in the fierce market competition. I hope that the content of this article can inspire you, and I also look forward to the release of more excellent anti-yellowing agents to add more color to our lives!

Extended reading:https://www.newtopchem.com/archives/44735

Extended reading:https://www.newtopchem.com/archives/44333

Extended reading:https://www.morpholine.org/k-15/

Extended reading:https://www.newtopchem.com/archives/1141

Extended reading:https://www.bdmaee.net/niax-d-50-tertiary-amine-catalyst-momentive/

Extended reading:https://www.bdmaee.net/lupragen-n204/

Extended reading:https://www.bdmaee.net/polycat-5-catalyst-cas3030-47-5-evonik-germany/

Extended reading:https://www.bdmaee.net/catalyst-9727/

Extended reading:https://www.newtopchem.com/archives/44405

Extended reading:https://www.bdmaee.net/wp-content/uploads/2022/08/Polyurethane-Catalyst-A33-CAS-280-57-9–33-LV.pdf

1•11141115111611171118•2359
Page 1116 of 2359