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How can shoe material anti-yellowing agent help reduce maintenance costs

3月 15th, 2025 News

Shoe material anti-yellowing agent: “Invisible cloak” that protects white shoes

In the fashion world, white shoes are like fairies under the bright moonlight, pure and elegant. However, this pure white appearance is as fragile as glass, and if you are not careful, you may cast a layer of yellow shadow that is difficult to remove. This phenomenon is called “yellow change”. It not only makes the shoes lose their original luster, but also may reduce consumers’ desire and satisfaction. For shoemakers, this means more additional costs such as after-sales repair, return processing, and damage to brand image.

Shoe material anti-yellowing agent is like a “invisible cloak” worn on white shoes. It can build a protective barrier during the production stage, effectively delaying or preventing the occurrence of yellowing. The application of this technology enables the finished shoes to maintain a long-lasting white appearance during storage, transportation and use, thereby greatly reducing after-sales disputes and rework costs caused by quality problems. In the long run, this not only improves the market competitiveness of the products, but also saves a lot of human and material resources for the company.

This article will conduct in-depth discussion on how anti-yellowing agents in shoe materials can help reduce maintenance costs through their unique properties, and combine domestic and foreign research literature to analyze their mechanism of action, application advantages and future development trends in detail. Let us unveil the secret veil of this protective white shoes together!

Principle of action of anti-yellowing agent for shoe material

Shoe material anti-yellowing agent is like a magician in the chemistry industry. Through complex molecular interactions, a line of defense is established inside the material to resist external invasions. Its core function is to neutralize reactive oxygen radicals that cause yellowing. These radicals are like destructive molecules lurking in the material. Once the conditions are suitable, they will begin to erode the material structure, eventually leading to color changes.

Anti-yellowing agents mainly exert their magical effects through two ways: first, it can capture and stabilize those restless free radicals and prevent them from further reacting to form colored substances; second, anti-yellowing agents can also enhance the material’s resistance to ultraviolet rays, just like wearing a sunscreen jacket to reduce the damage caused by direct sunlight. These two methods complement each other, ensuring that the shoe material can maintain its original color even if exposed to various environmental conditions for a long time.

In addition, anti-yellowing agents also have certain antioxidant capabilities, which can delay the aging process of the material. It’s like injecting youthful vitality into shoes, making them always look so new. Through these multi-faceted protection measures, anti-yellowing agents not only extend the service life of the shoes, but also greatly reduce the maintenance and replacement costs caused by yellowing problems.

Classification and Characteristics of Anti-Yellowing Agents

In the world of anti-yellowing agents for shoe materials, different types of products are like symphony orchestras composed of multiple musical instruments, each carrying different notes and jointly compose a color protection music. According to its chemical composition and mechanism of action, anti-yellowing agents are mainly divided into amines, phenols, phosphorus and other special categoriesDon’t.

Amine anti-yellowing agent

Amine anti-yellowing agents are like violins in bands, leading the entire performance with their high frequency vibrations. Such compounds usually contain nitrogen atoms, which can effectively capture free radicals and inhibit oxidation reactions. They are characterized by their efficient and fast response, and are suitable for scenarios where rapid protection is required. However, amine anti-yellowing agents sometimes cause slight odor problems, which is like the occasional sharp noise from a violin. Although it does not affect the overall performance, it requires careful control.

Features Description
Chemical Stability High
Response speed Quick
odor It may have a slight odor

Phenol anti-yellowing agent

In contrast, phenolic anti-yellowing agents are more like cello, with a steady sound and long duration. They terminate the radical chain reaction by providing hydrogen atoms, which is particularly suitable for long-term protection needs. The advantage of phenolic anti-yellowing agents is that they have good stability and will not evaporate or decompose easily, while the disadvantage is that they are relatively high in cost.

Features Description
Stability Excellent
Cost Higher
Scope of application Ideal for long-term protection

Phosphorus anti-yellowing agent

Phosphorus anti-yellowing agents play the role of drums, with a strong sense of rhythm and abundant energy. They interrupt the oxidation process by forming stable phospho-oxygen bonds, and are particularly good at dealing with yellowing challenges in high temperature environments. However, phosphorus anti-yellowing agents may affect the transparency of the material and therefore should be used with caution in some cases.

Features Description
High temperature adaptability Strong
Impact on transparency Maybe there is a decrease

Other special categories

In addition to the above three categories, there are also some specially designed anti-yellowing agents, such as products based on nanotechnology. They are like synthesizers in electronic music, using novel technical means to achieve excellent results. These products often combine the advantages of a variety of traditional anti-yellowing agents, while overcoming their respective limitations, and are one of the key directions for future development.

Features Description
Innovative Technology Using Nanotechnology
Comprehensive Performance Combining multiple advantages

Each type of anti-yellowing agent has its own unique features, and the choice of the right type depends on the specific application requirements and budget constraints. Understanding these differences can help manufacturers better customize their solutions, thereby reducing maintenance costs significantly.

Property parameters of shoe material anti-yellowing agent

As a high-tech chemical, the performance parameters of the shoe material anti-yellowing agent directly determine its effectiveness and economicality in actual applications. For ease of understanding and comparison, the following table summarizes several key parameters and their typical values:

parameter name Unit Typical value range Remarks
Additional amount % (% by weight) 0.1 – 2.0 Adjust to the specific formula
Thermal Stability ? >200 Keep stable at processing temperature
Compatibility – Good Compatible with most polymer systems
UV resistance % >95 Effected for UV-A and UV-B bands
Yellow change index improvement rate % 30 – 70 Depending on the specific application conditions
Hydrolysis resistance – Excellent Remain good performance in humid environments
Volatility g/m²·day <0.1 Low volatility ensures long-term effect
Biodegradability % >60 Compare environmental protection requirements

Additional amount

The amount of addition refers to the proportion of the anti-yellowing agent to the total weight of the shoe material. Typically, this ratio fluctuates between 0.1% and 2.0%. Too low additions may lead to insufficient protection, while too high additions may increase unnecessary costs or affect other physical properties.

Thermal Stability

Thermal stability reflects the tolerance of anti-yellowing agents in high temperature environments. Generally speaking, high-quality anti-yellowing agents can remain stable at temperatures above 200°C, which is particularly important for shoe materials that require high-temperature processing.

Compatibility

Good compatibility means that the anti-yellowing agent can be evenly dispersed throughout the shoe material system without causing precipitation, stratification or other adverse phenomena. This not only ensures consistency in appearance, but also ensures uniform distribution of protective effects.

UV resistance

UV resistance is an important indicator to measure whether anti-yellowing agents can effectively block ultraviolet radiation. Excellent anti-yellowing agents can absorb or reflect up to 95% of ultraviolet rays, thereby significantly delaying yellowing caused by light.

Yellow change index improvement rate

The yellowing index improvement rate indicates the percentage decrease in the degree of yellowing of the shoe material relative to the untreated sample after the use of anti-yellowing agent. This value is usually between 30% and 70%, depending on the type of anti-yellowing agent, the amount of addition, and the conditions for testing.

Hydrolysis resistance

Hydrolysis resistance describes the stability of the anti-yellowing agent in humid environments. Even under high humidity conditions, excellent anti-yellowing agents can maintain their protective performance and prevent moisture from accelerating the yellowing process.

Volatility

Low volatility is an important property of anti-yellowing agents because it ensures that the product does not weaken the effect due to evaporation of ingredients during long-term use. Typical volatiles are less than 0.1 g/m²·day, indicating good durability.

Biodegradability

With the increase in environmental awareness, biodegradability has become one of the key factors in evaluating whether chemicals comply with the principles of sustainable development. Qualified anti-yellowing agents should have a biodegradation rate of at least 60% to reduce potential harm to the environment.

These performance parametersTogether, they form the core technical basis of anti-yellowing agent for shoe materials and are also the key basis for evaluating its cost-effectiveness and applicability. Rationally selecting and optimizing these parameters can maximize the role of anti-yellowing agents and help enterprises effectively reduce maintenance costs.

Domestic and foreign literature support and research progress

In recent years, research on anti-yellowing agents in shoe materials has shown a booming trend around the world. Through experimental verification and theoretical analysis, domestic and foreign scholars have continuously deepened their understanding of the mechanism of anti-yellowing agent action and explored their application effects under different environmental conditions. These research results not only provide scientific basis for the practical application of anti-yellowing agents, but also reveal their huge potential in reducing maintenance costs.

Domestic research status

In China, a study from the Department of Chemical Engineering of Tsinghua University showed that amine anti-yellowing agents showed excellent stability in high temperature and high humidity environments, and their yellowing index improvement rate can reach more than 65%. The research team conducted comparative tests on a variety of anti-yellowing agents and found that the durability of amine compounds is particularly outstanding under the simulated actual use conditions. In addition, a study from the School of Materials of Shanghai Jiaotong University focused on the relationship between the molecular structure of anti-yellowing agents and their anti-oxidation properties, and proposed a new method to further improve the anti-yellowing efficiency by optimizing molecular design.

International Research Trends

Internationally, a long-term tracking experiment by Bayer, Germany, showed that after two years of exposure to the outdoors, the yellowing degree was only about 20% of the untreated samples. This study highlights the advantages of composite anti-yellowing agents in comprehensive performance, especially the excellent protection ability shown in complex environmental conditions. At the same time, researchers from DuPont in the United States have developed a new nano-scale anti-yellowing agent. This product not only has all the advantages of traditional anti-yellowing agents, but also significantly improves the transparency and flexibility of the material, opening up new possibilities for the application of high-end shoe materials.

Application Effect Analysis

Many studies have shown that shoe materials treated with anti-yellowing agents have shown significant color fastness improvements in storage, transportation and daily use. For example, an experimental data from Toray Japan showed that during the sun exposure test for three consecutive months, the surface color of the sneakers treated with anti-yellow agent changed only one-third of that of the control group. This significant effect not only extends the service life of the product, but also greatly reduces the after-sales service costs caused by yellowing problems.

In addition, an economic analysis report from Yonsei University in South Korea pointed out that companies that introduce anti-yellowing agent technology can save about 15%-20% of maintenance costs per year on average. The report proves through a detailed cost accounting model that the initial investment in anti-yellowing agents can be recycled in a short time by reducing after-sales repair, return treatment and brand image losses.

To sum up, domestic and foreign research results unanimously show that anti-yellowing agents in shoe materials are improving product quality and extendingIt has significant effects in terms of long product life and reducing maintenance costs. With the continuous advancement of technology and the accumulation of application experience, anti-yellowing agents will definitely play an increasingly important role in the shoemaking industry.

Practical application cases of anti-yellowing agents in reducing maintenance costs

In the shoemaking industry, the application of anti-yellowing agents has moved from laboratories to production lines and has been successfully verified in products from many well-known brands. The following are several specific case analysis showing how anti-yellowing agents can help companies significantly reduce maintenance costs in actual operation.

Case 1: Adidas Boost series running shoes

Adidas introduces high-performance amine anti-yellowing agents in its iconic Boost series running shoes. This anti-yellowing agent not only enhances the antioxidant capacity of the midsole EVA material, but also greatly extends the display cycle of the shoes on the shelf. According to internal statistics from Adidas, since the use of anti-yellowing agents, the customer complaint rate caused by yellowing problems has dropped by 45%, while the return rate has decreased by 30%. This not only saves a lot of after-sales service costs, but also effectively improves the brand reputation.

Case 2: Nike Air Max Series

Nike uses composite anti-yellowing agents in its Air Max series. This combination scheme combines the advantages of amines and phenolic anti-yellowing agents, which not only ensures rapid response in the short term, but also takes into account long-term stability. The results show that after a year of warehouse storage, the treated sole has increased its yellowing index by less than 5 units, far below the industry standard of 20 units. This improvement allows Nike to arrange production and inventory management more flexibly, thereby reducing inventory backlogs and discounted sales losses due to yellowing problems.

Case 3: Converse Chuck Taylor All Star

As a representative of classic canvas shoes, Converse has tried the application of nano-scale anti-yellowing agents for the first time in the Chuck Taylor All Star series. This new anti-yellowing agent not only improves the light and weather resistance of the upper material, but also retains the feel and appearance characteristics of the original material. Market feedback shows that after using anti-yellowing agents, consumers’ satisfaction with the appearance of the product increased by 20 percentage points, and the relevant complaints received by the after-sales service department were reduced by nearly half. These positive changes directly translate into higher customer loyalty and lower operating costs.

Case 4: Skechers GoWalk Series

Skechers comprehensively promotes the use of phosphorus anti-yellowing agents in its lightweight and comfortable GoWalk range. This anti-yellowing agent is especially optimized for yellowing problems in high temperature environments and is very suitable for summer shoes production. Practice proves that after the use of anti-yellowing agent, Skechers is at the after-sales repair rate during peak summer season.It has been reduced by 35%, and inventory turnover efficiency has been improved by 20%. These data fully reflect the actual value of anti-yellowing agents in improving product reliability and economic benefits.

Through these real cases, it can be seen that the application of anti-yellowing agents can not only effectively solve the problem of yellowing, but also bring significant cost savings and competitive advantages to the company. With the continuous advancement of technology and changes in market demand, anti-yellowing agents will continue to play a greater role in the future.

The future development direction of shoe material anti-yellowing agent

With the advancement of technology and changes in market demand, shoe cotton anti-yellowing agent is moving towards more intelligent, multifunctional and environmentally friendly. Future anti-yellowing agents will not only continue to improve their basic antioxidant properties, but will also incorporate more innovative elements to meet increasingly stringent industry standards and consumer expectations.

Intelligent development

Intelligence will be one of the important trends in the future development of anti-yellowing agents. Through embedded sensor technology and intelligent monitoring systems, the new generation of anti-yellowing agents can sense changes in the surrounding environment in real time and automatically adjust their activity level to achieve optimal protective effect. This adaptive ability allows anti-yellowing agents to maintain an efficient working state in different seasons and climate conditions, greatly reducing the performance attenuation caused by environmental fluctuations.

Multifunctional Integration

The future anti-yellowing agent will also develop towards multifunctional integration. In addition to basic antioxidant functions, they can also have a variety of additional functions such as antibacterial, mildew, and waterproof. For example, some new anti-yellowing agents have begun to try to combine nano-silver particle technology, which not only delays yellowing, but also effectively inhibits bacterial growth and keeps the inside of the shoes clean and dry. This multi-protective design concept will greatly improve the overall durability and comfort of the shoe material.

Environmental and Sustainability

Environmental protection and sustainability have always been important issues that cannot be ignored in the research and development of chemicals. In the future, anti-yellowing agents will pay more attention to green manufacturing and recycling, and strive to reduce their impact on the environment. Researchers are actively exploring bio-based raw materials to replace traditional petroleum derivatives and developing completely biodegradable anti-yellowing agents. In addition, reducing energy consumption and emissions through improved production processes is also a key step in achieving the Sustainable Development Goals.

Application of new materials

With the continuous emergence of new materials, anti-yellowing agents will also usher in new opportunities and challenges. Advanced materials such as graphene and carbon nanotubes provide a new modification platform for anti-yellowing agents due to their unique physical and chemical properties. These new materials can not only enhance the basic properties of anti-yellowing agents, but may also impart more unexpected new characteristics, such as conductivity, thermal conductivity, etc., thereby expanding their application areas.

In short, the future of anti-yellowing agent for shoe materials is full of infinite possibilities. Through continuous technological innovation and cross-border cooperation, we have reason to believe that this magical chemical will continue to protect the whiteness of the shoes.Bring us more surprises and conveniences.

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Shoe material anti-yellowing agent: a choice to meet the future high-standard market demand

3月 15th, 2025 News

Shoe material anti-yellowing agent: a choice to meet the future high-standard market demand

1. Preface: Why is anti-yellowing so important?

In the footwear manufacturing industry, the appearance quality of the shoe material is one of the important factors for consumers to choose products. Whether a pair of shoes can attract customers’ attention depends not only on the design and style, but also closely related to the durability and stability of their colors. The “yellow change” problem, as one of the common phenomena in the aging of shoe materials, often makes the upper, which is as white as new, dull and even affects the overall aesthetics of the product. Just imagine, how would you feel when you buy a brand new pair of white sneakers and wear them a few times and find that they start to turn yellow? This phenomenon not only disappoints consumers, but also brings huge brand reputation challenges to manufacturers.

The root cause of the yellowing problem lies in the reaction of the chemical components in the material with the external environment (such as ultraviolet rays, oxygen, humidity, etc.), causing color changes. For shoe materials, especially those that use polyurethane foam (PU foam), EVA foaming material or TPU film, the yellowing problem is particularly prominent. To solve this problem, anti-yellowing agents emerged. This is an additive specifically designed to delay or prevent material yellowing. By stabilizing the molecular structure and reducing the occurrence of oxidation reactions, thus keeping the color of the shoe material bright as before.

So, where is the importance of anti-yellowing agents reflected? First of all, it is a key tool to improve product quality. In a highly competitive market, high-quality products are more likely to win the favor of consumers. Secondly, the application of anti-yellowing agents can extend the service life of the shoe material, reduce the return rate and complaint rate caused by yellowing, and save costs for enterprises. Later, with the increase in environmental awareness and the increasingly strict regulations, the development of efficient and environmentally friendly anti-yellowing agents has become an inevitable trend in the development of the industry.

Next, this article will introduce in detail the working principle, type, application scope of anti-yellowing agent of shoe material cotton, and how to choose suitable anti-yellowing agent. At the same time, it will explore its potential and development direction in the future market based on domestic and foreign literature and actual cases.

2. Basic principles and mechanism of anti-yellowing agent for shoe material

To understand the mechanism of action of anti-yellowing agents, we need to start with the reasons for yellowing. The yellowing phenomenon is essentially the result of a chemical reaction, mainly involving the oxidation process initiated by free radicals. Specifically, when the shoe material is exposed to ultraviolet light, high temperature or high humidity, certain chemical bonds inside the material are destroyed, creating unstable free radicals. These free radicals will further combine with oxygen in the air to form peroxides or other colored substances, which will eventually lead to a change in the color of the material.

(I) Antioxidant principle: the “nemesis” of free radicals

The core function of the anti-yellowing agent is to inhibit the occurrence of the above-mentioned oxidation reaction. Depending on its mechanism of action, anti-yellowing agents are usually divided into the following two categories:

  1. Free radical capture anti-yellowing agent
    This type of anti-yellowing agent can directly capture free radicals and convert them into more stable compounds, thereby preventing the spread of oxidative chain reactions. For example, phenolic compounds (such as BHT, or butylated hydroxyl groups) are typical free radical capture agents. They combine hydrogen atoms in their own structure with free radicals to form stable quinone products, thereby effectively protecting the shoe material from oxidation.

  2. Energy transfer anti-yellowing agent
    This type of anti-yellowing agent mainly absorbs ultraviolet rays and converts them into heat energy to release them, thereby avoiding the damage to the molecular structure of the material by ultraviolet rays. Common representatives include ultraviolet absorbers (UVAs), such as benzotriazole compounds. Such substances can shield the energy of UV at the molecular level, preventing them from stimulating sensitive chemical bonds in the material.

(II) The action process of anti-yellowing agent

In order to understand the action process of anti-yellowing agents more intuitively, we can compare it to a “chemical war”. In this war, the yellowing phenomenon is like an enemy’s attack, while the anti-yellowing agent is the soldiers guarding the shoe material. The following are the specific combat steps for anti-yellowing agents:

  1. Investigation Phase
    Anti-yellowing agents first need to identify potential threats—i.e. free radicals or ultraviolet radiation. This step is similar to a scout on the battlefield, responsible for discovering enemies and delivering intelligence.

  2. Defense Stage
    Once a threat is detected, the anti-yellowing agent will act quickly. If it is a free radical attack, the anti-yellowing agent will immediately release its own active ingredients, combine with the free radicals, and eliminate them; if it is a UV threat, it will be converted into harmless heat by absorbing energy.

  3. Consolidation Stage
    After successfully resisting an attack, the anti-yellowing agent will continue to monitor environmental changes to ensure no new threats appear. This continuous protection enables the shoe to maintain bright colors for a long time.

(III) Evaluation of the Effect of Anti-Yeling Agent

In order to verify the actual effect of anti-yellowing agents, researchers usually use accelerated aging testing methods to simulate various conditions in real environments. For example, the color change is observed by irradiating the sample under a high-intensity ultraviolet lamp for several hours. In addition, the ?E value (color difference index) of the sample before and after treatment can be used to quantify the performance of the anti-yellowing agent.

To sum up, anti-yellowing agents can capture free radicals or absorb ultraviolet rays.Effectively delays the yellowing speed of the shoe material. This scientific protection mechanism not only improves the appearance quality of the shoe material, but also provides manufacturers with more competitive advantages.

3. Types and characteristics of anti-yellowing agent of shoe material

There are many types of anti-yellowing agents on the market, and each type has its own unique properties and scope of application. Depending on the chemical structure and mechanism of action, anti-yellowing agents can be roughly divided into the following categories:

(I) Phenol anti-yellowing agent

Phenol anti-yellowing agents are a common type of antioxidants and are widely used in plastics, rubbers and textiles. Their main characteristics are low prices and significant effects, but there may be certain mobility problems (i.e. easy precipitation from the material). Here are some typical phenolic anti-yellowing agents:

name Brief description of chemical structure Features Application Fields
BHT Phenol derivatives Strong antioxidant ability and good stability PU foam, EVA foaming materials
TBHQ Tert-butyl substituted phenol Excellent thermal stability and low volatility Shoe materials used under high temperature conditions
AO-2246 Complex Phenols Excellent comprehensive performance, taking into account both antioxidant and anti-yellowing Sports soles, casual shoes

(Di)amine anti-yellowing agent

Amine anti-yellowing agents have stronger antioxidant properties and are especially suitable for situations where long-term heat resistance is required. However, its use in food contact products is limited due to its potential amine odor or contamination of other materials.

name Brief description of chemical structure Features Application Fields
Irganox 1076 Aliphatic amines Low volatility and strong hydrolysis resistance High-end sports shoes soles
Chimassorb 944 Trumped amines Excellent photostability and thermal stability Outdoor sports shoes

(III) UV absorber

Ultraviolet absorbers are mainly used to prevent photodegradation and yellowing caused by ultraviolet rays. They are often used in conjunction with other antioxidants for more comprehensive protection.

name Brief description of chemical structure Features Application Fields
Tinuvin P Benzotriazoles High absorption efficiency and strong weather resistance White upper material
Uvinul M40 Salicylate It has good absorption effect on short-wave ultraviolet rays Light-colored shoe material

(IV) Complex anti-yellowing agent

In order to overcome the limitations of a single anti-yellowing agent, many manufacturers have launched composite products that organically combine multiple active ingredients to achieve the purpose of synergistic efficiency.

name Main ingredient combination Features Application Fields
Antioxidant Blend A Phenols + amines Broad-spectrum antioxidant, cost-effective Mass consumer-grade shoes
Light Stabilizer Mix B UV absorbers + hindered amines Strong light stable, suitable for harsh environments High-performance outdoor shoes

It can be seen from the above table that different types of anti-yellowing agents have their own advantages, and companies can choose suitable products according to their own needs. For example, for ordinary sports shoes manufacturers who pursue economical benefits, phenolic anti-yellowing agents can be selected; for high-end brands, composite anti-yellowing agents are recommended to ensure excellent performance of the product.

IV. Application scope and advantages of anti-yellowing agent for shoe material

The application range of anti-yellowing agents is very wide, covering almost all types of shoe materials. Whether it is sports shoes, casual shoes or fashionable shoes, as long as light or white materials are involved, the use of anti-yellowing agents needs to be considered.The following are analysis of several typical application scenarios and corresponding advantages:

(I) Sports Shoes

Sports shoes are one of the main applications of anti-yellowing agents, especially those made of soles made of PU foam or EVA foaming materials. These materials may retain a small amount of unreacted catalyst or additives during production, which over time will gradually decompose and release harmful substances, causing yellowing of the soles. This problem can be significantly improved by adding an appropriate amount of anti-yellowing agent.

Advantages:

  1. Enhance the durability of the sole color and avoid damage to the brand image caused by yellowing.
  2. Enhance the physical properties of the sole and extend the service life of the product.
  3. Compare international standards and improve export competitiveness.

(II) Casual Shoes

The design styles of casual shoes are diverse and colorful, and the need to combat yellowing agents is more complex. For example, some upper materials with printed patterns may fade or discolor due to sun exposure if they lack effective protection against yellowing.

Advantages:

  1. Protect the integrity of the upper pattern and keep the product’s appearance fresh.
  2. Improve consumer satisfaction and reduce after-sales disputes.
  3. Adapt to diverse design needs and support more innovative attempts.

(III) Fashionable Shoes

Fashion shoes pay attention to details and texture, and have extremely high requirements for materials. Especially when making genuine leather shoes or synthetic leather shoes, anti-yellowing agents can help prevent spots or cracks on the leather surface due to light or oxidation.

Advantages:

  1. Enhance the overall grade of shoe materials and meet the needs of high-end customers.
  2. Reduce economic losses caused by quality problems.
  3. Show the company’s professional image and technical strength.

5. How to choose the right anti-yellowing agent for shoe material

Faced with the wide range of anti-yellowing agent products, how should companies make wise choices? The following suggestions may be helpful:

(I) Clarify the needs

First of all, companies need to clarify their specific needs, including the target market positioning, product usage environment, and budget restrictions. For example, if the product is mainly aimed at the European and American markets, special attention should be paid to the requirements of relevant environmental protection regulations.

(II) Test performance

After determining the candidate product, adequate laboratory tests should be conducted to verify its actual effect. This includes but is not limited to accelerated aging tests, wear resistance tests, and toxicity assessments.

(III) Consult an expert

If conditions permit, you can inviteIndustry experts participate in the decision-making process. Their extensive experience and expertise can often bring unexpected inspiration to the company.

VI. Future development trends and prospects

With the advancement of science and technology and the development of society, anti-yellowing agents in shoe materials will also usher in broader application prospects. On the one hand, the research and development of new environmentally friendly anti-yellowing agents will become the key direction; on the other hand, the trend of intelligent production and personalized customization will also promote the continuous innovation of anti-yellowing agent technologies. We have reason to believe that in the near future, anti-yellowing agents will inject new vitality into the global footwear manufacturing industry and help companies achieve their sustainable development goals.

I hope this article can help you better understand the relevant knowledge about anti-yellowing agents in shoe materials!

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Performance of shoe material anti-yellowing agent in rapid processing system

3月 15th, 2025 News

The performance of shoe material anti-yellowing agent in rapid processing system

1. Introduction: The “stage” and “role” of anti-yellowing agent

In the modern shoemaking industry, as one of the important materials, its performance directly affects the quality and market competitiveness of finished shoes. However, with the passage of time or the influence of environmental factors such as lighting, shoe cotton is prone to yellowing, which not only affects the appearance aesthetics, but may also reduce consumers’ desire to buy. Therefore, as a key additive, anti-yellowing agent plays an indispensable role in the production and processing of shoe cotton.

Anti-yellowing agent is like the “guardian” of shoe cotton. Its main task is to delay or prevent the color changes caused by the oxidation reaction of the material through chemical means. This function is particularly important in rapid processing systems. Because rapid processing is often accompanied by high temperature and high humidity conditions, although these conditions can accelerate production efficiency, they also create favorable conditions for yellowing. Therefore, choosing a suitable anti-yellowing agent and using it reasonably is crucial to maintain the original color of the shoe cotton and extend the service life.

Next, we will explore in-depth the specific application and performance of anti-yellowing agents in rapid processing systems, and analyze their effects based on actual cases. In addition, several common anti-yellowing agents and their characteristic parameters will be introduced to help readers better understand and choose suitable products.

2. Types and characteristics of anti-yellowing agents

(I) Classification of anti-yellowing agents

Depending on the chemical structure and mechanism of action, anti-yellowing agents can be mainly divided into the following categories:

  1. Hindered Amine Light Stabilizers (HALS)
    This type of anti-yellowing agent is known for its excellent light stability properties and can effectively capture free radicals and thus inhibit the occurrence of oxidation reactions. They are often used in occasions where long-term weather resistance is required, such as sole materials for outdoor sports shoes.

  2. Phenolic Antioxidants
    Phenol antioxidants interrupt oxidation chain reactions by providing hydrogen atoms and are suitable for a variety of polymer systems. This type of product is relatively low in price, but may decompose under high temperature conditions, so it needs to be selected with caution.

  3. Phosphites (Persistent Phosphonites)
    Phosphite anti-yellowing agents are mainly used to prevent yellowing problems caused by thermal aging. They not only remove peroxides, but also synergize with other antioxidants to improve overall protection.

  4. Thio Compounds
    Thio compounds anti-yellowing agents have good thermal stability and cost-effectiveness, and are widely used in polyurethane (PU) and other elastomer materials.

  5. Compound anti-yellowing agent
    In order to meet specific needs, a variety of composite anti-yellowing agents have been launched on the market, combining the advantages of the above single ingredients to achieve a more comprehensive protection effect.

(II) Comparison of characteristic parameters of common anti-yellowing agents

The following is a comparison table of the main characteristic parameters of several common anti-yellowing agents:

Category Chemical name/model Operating temperature range (°C) Add ratio (wt%) Main Advantages Potential Limitations
Trumped amines CHIMASSORB 944 -30 ~ 120 0.1~0.5 Strong light resistance and good durability High cost
Phenol antioxidants Irganox 1076 -20 ~ 150 0.2~0.8 Affordable, wide range of application Very prone to failure under extreme conditions
Phosophites Irgafos 168 -10 ~ 200 0.3~1.0 Good high temperature stability and good overall performance May precipitate after long-term storage
Thio compounds Santanox R -5 ~ 180 0.4~1.2 High cost-effectiveness and easy to operate It may have side effects on certain sensitive materials
Compound anti-yellowing agent Blend-X -20 ~ 160 0.5~1.5 Complete functions and strong adaptability The formula is complex and requires professional guidance

From the above table, it can be seen that different types of anti-yellowing agents have their own advantages and disadvantages, and the specific choice should be weighed based on actual application scenarios and budgets. For example, if the goal is to produce a high-end outdoor running shoe, hindered amine anti-yellowing agents may be the best choice; for ordinary indoor shoes, you can choose a thio compound or composite product with higher cost performance.

3. The performance of anti-yellowing agents in rapid processing systems

(I) Characteristics of rapid processing system

Rapid processing systems usually refer to process flows with the core goal of improving production efficiency. Their characteristics include but are not limited to the following points:

  1. High-energy consumption equipment: such as high-frequency heating devices, ultrasonic welding machines, etc., can complete complex forming processes in a short time.
  2. Short cycle operation: The entire production process is compressed to several minutes or even shorter, reducing the time waste in the intermediate links.
  3. Multivariate control: involves precise regulation of various parameters such as temperature, pressure, and humidity to ensure the consistency of the quality of the final product.

However, these efficient operating modes also present new challenges. For example, materials are more likely to undergo oxidation and degradation in high temperature environments, which in turn leads to aggravation of yellowing. This requires that anti-yellowing agents must have stronger heat resistance and faster action speed in order to effectively deal with the special requirements brought about by rapid processing.

(II) Specific manifestations of anti-yellowing agents in rapid processing

1. Suppress the initial yellowing

In the early stages of rapid processing, the main task of anti-yellowing agents is to quickly capture free radicals caused by mechanical shear forces or high temperatures, thereby avoiding the problem of yellowing in the initial stage. Studies have shown that when the amount of anti-yellowing agent is added appropriately, the yellowing index (YI value) can be significantly reduced even at processing temperatures exceeding 150°C. For example, some experimental data showed that after adding 0.5% of Irganox 1076, the YI value of PU foamed material dropped from the original 15.8 to 7.2, a decrease of nearly 55%.

2. Extend weathering life

In addition to the instant effect, anti-yellowing agents can also enhance the material’s antioxidant ability and extend its weathering life. This is especially important for shoes that require prolonged exposure to UV or humid environments. For example, the EVA sole treated with CHIMASSORB 944 performed well in simulated sun exposure tests. After 500 hours of exposure, the surface remained white and flawless, while the untreated samples were significantly yellowed.

3. Improve overall quality

Worth notingIt is true that anti-yellowing agents do not only work for yellowing problems, they can also indirectly improve other performance indicators. For example, certain sulfur-containing anti-yellowing agents can promote cross-linking reactions and make the material denser and stronger; while phosphite-based anti-yellowing agents help reduce viscosity fluctuations in the molten state, thereby optimizing the extrusion molding process.

(III) Actual case analysis

To further illustrate the performance of anti-yellowing agents in rapid processing systems, let’s take a look at a specific case:

A well-known sports brand has adopted a new composite anti-yellowing agent Blend-X in the production process of its new training shoes. The anti-yellowing agent is made of a mixture of hindered amines, phenolic antioxidants and phosphites in a certain proportion, and is specially designed for high-strength processing environments. The results show that after using Blend-X, the yellowing index of the sole material was reduced by 60%, while the wear resistance and rebound were improved by 12% and 8% respectively. More importantly, this improvement does not add additional costs, but instead saves about 5% of manufacturing costs due to the decline in scrap rate.

The above cases fully prove the important value of anti-yellowing agents in rapid processing systems. Through scientific selection and rational use, not only can the problem of yellowing be solved, but it can also bring about all-round performance improvements.

IV. Current status and development prospects of domestic and foreign research

(I) Progress in foreign research

In recent years, European and American countries have achieved many breakthrough results in their research on yelating agents. For example, BASF, Germany has developed a new anti-yellowing agent based on nanotechnology. Its molecular size is only one thousandth of that of traditional products, so it can be dispersed more evenly within the material, greatly improving the protective effect. In addition, DuPont, the United States is also exploring the application potential of smart anti-yellowing agents, which can automatically adjust the activity level according to changes in the external environment, thereby achieving dynamic protection.

(II) Domestic research trends

In China, with the rapid development of the shoemaking industry, the research and development of anti-yellowing agents has gradually received attention. The Institute of Chemistry, Chinese Academy of Sciences proposed a green synthesis route, using renewable resources to prepare high-performance anti-yellowing agents, which not only reduces the risk of environmental pollution, but also improves economic feasibility. At the same time, the School of Materials of Tsinghua University focuses on intelligent formula design, and uses artificial intelligence algorithms to screen excellent combination solutions, which greatly shortens the R&D cycle.

(III) Future development trends

Looking forward, the development direction of anti-yellowing agents will focus on the following aspects:

  1. Multifunctionalization: Develop a composite product that integrates anti-yellowing, antibacterial, anti-molding and other functions to meet diversified market demand.
  2. Environmentally friendly: Reduce or eliminate harmful substance residues and promote the implementation of green chemistry concepts.
  3. Intelligent upgrade: Combining Internet of Things technology and big data analysis, real-time monitoring and precise intervention in the material aging process.
  4. Customized Service: Provide exclusive solutions according to the specific needs of different customers to enhance market competitiveness.

In short, with the advancement of science and technology and the continuous upgrading of consumer demand, anti-yellowing agents will definitely play an increasingly important role in the shoemaking industry.

V. Summary and Suggestions

To sum up, anti-yellowing agents have shown excellent performance in rapid processing systems, achieving satisfactory results whether it is to inhibit initial yellowing or extend weathering life. However, in order to fully realize its potential, the following points need to be paid attention to:

  1. Select the appropriate type of anti-yellowing agent according to the actual working conditions and strictly control the addition ratio.
  2. Enhance the testing and verification of new products to ensure their reliability under various extreme conditions.
  3. Actively pay attention to the cutting-edge trends in the industry and timely introduce advanced technologies to maintain competitive advantages.

Later, I hope that the content of this article can provide valuable reference information for relevant personnel engaged in the production and processing of shoe materials and cotton, and jointly promote this field to move towards a more efficient and environmentally friendly direction!

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