The leader of China special amines-

Archive for the category: News

Home / News

The role of polyurethane composite antioxidants in electric vehicle charging facilities

3月 16th, 2025 News

Polyurethane composite antioxidant: “Guardian” in electric vehicle charging facilities

1. Introduction

With the transformation of the global energy structure and the improvement of environmental awareness, electric vehicles (Electric Vehicle, EV) have gradually become the main development direction of future transportation. As an important infrastructure to support the operation of electric vehicles, the performance and stability of charging facilities directly affect the user’s travel experience and the healthy development of the entire industry. However, in high voltage and high current operating environments, charging equipment and its key materials are easily affected by adverse factors such as oxidation and aging, thereby reducing service life and increasing safety hazards. Therefore, how to delay the aging process of materials and improve the durability of equipment through technical means has become one of the key points of researchers’ attention.

As a high-performance additive, polyurethane composite antioxidant has been widely used in the field of electric vehicle charging facilities in recent years. It can not only effectively inhibit the performance degradation caused by oxidation reaction during use of polyurethane materials, but also significantly improve the mechanical strength, flexibility and weather resistance of the materials, providing reliable protection for charging facilities. This article will start from the basic principles of polyurethane composite antioxidants and deeply explore its specific role in electric vehicle charging facilities, and analyze it in combination with relevant domestic and foreign literature to provide reference for industry development.

2. Basic knowledge of polyurethane composite antioxidants

(I) Definition and Classification

Polyurethane composite antioxidants are a class of chemicals specially used to prevent or slow down the oxidative degradation of polyurethane materials. According to its mechanism of action, it can be divided into the following categories:

  1. Main antioxidant
    The main antioxidant mainly interrupts the oxidation chain reaction by capturing free radicals, thus playing an antioxidant role. Common main antioxidants include hindered phenolic compounds (such as BHT), phosphite compounds, etc.

  2. Supplemented antioxidants
    The auxiliary antioxidants focus on decomposing hydroperoxides to prevent them from further induced oxidation reactions. Typical auxiliary antioxidants include thiodipropionate, phosphite, etc.

  3. Synonymous Antioxidants
    Synergistic antioxidants are made up of the main antioxidant and the auxiliary antioxidant, which can give full play to the advantages of both and achieve better antioxidant effects.

(II) Working principle

Polyurethane materials are prone to oxidation reactions under high temperature, light or electric field, forming free radicals and triggering chain reactions, which ultimately leads to deterioration of material properties. Polyurethane composite antioxidants inhibit this process by:

  • Capture free radicals: The main antioxidant can quickly bind to the free radicals to form a stable compound, thereby preventing the continued oxidative chain reaction.
  • Decomposition of hydroperoxides: Coupon antioxidants can decompose hydroperoxide into harmless small molecules, reducing the possibility of secondary oxidation.
  • Synergy Effect: When two or more antioxidants are used in combination, they will produce synergistic effects, further improving antioxidant capacity.

3. Application of polyurethane composite antioxidants in electric vehicle charging facilities

(I) Material requirements for electric vehicle charging facilities

Electric vehicle charging facilities mainly include charging pile shells, cable sheaths, insulation layers and internal connections. Most of these parts are made of polyurethane material because polyurethane has excellent wear resistance, elasticity and processing properties. However, since charging facilities are exposed to outdoor environments for a long time and need to withstand high temperature changes and ultraviolet radiation, polyurethane materials are very prone to aging, such as discoloration, cracking and even breakage. This not only affects the appearance of the device, but may also cause functional failure and threaten user security.

In order to extend the service life of the charging facility and ensure its normal operation, it is particularly important to add an appropriate amount of polyurethane composite antioxidant.

(Bi) Analysis of specific effects

  1. Delaying material aging
    Polyurethane composite antioxidants can effectively inhibit the occurrence of oxidation reactions and enable polyurethane materials to maintain their original physical and chemical properties. For example, after adding antioxidants to the charging pile shell, the shell can maintain good gloss and hardness even after years of wind and sun exposure.

  2. Enhance weather resistance
    Charging piles are usually installed outdoors and face the test of extreme weather conditions (such as high temperature, low temperature, and humidity). Polyurethane composite antioxidants significantly improve their adaptability to harsh environments by stabilizing the internal structure of the material.

  3. Improving mechanical properties
    The presence of antioxidants helps maintain the flexibility and strength of the polyurethane material, making it less likely to break if it is repeatedly bent or stretched. This is especially important for cable sheaths, as the cable needs to be flexible enough to facilitate installation and maintenance.

  4. Ensure electrical insulation performance
    Inside the charging facility, the integrity of the insulation layer is directly related to electricity safety. Polyurethane composite antioxidants prevent insulating materials from losing their insulation capacity due to aging, thereby reducing the risk of short circuits.

IV. Product parameters of polyurethane composite antioxidants

The following is a comparison table of technical parameters of several common polyurethane composite antioxidants:

Brand/Model Type Appearance Melting point (?) Additional amount (wt%) Features
Antioxidant A Stealed Phenols White Powder 120~130 0.3~0.5 Efficiently capture free radicals, suitable for high temperature environments
Antioxidant B Phosophites Light yellow liquid – 0.1~0.3 Hydroperoxide decomposition has strong ability and is suitable for use with other antioxidants
Antioxidant C Synergy White particles 80~90 0.5~1.0 Excellent comprehensive performance, widely used in outdoor weather-resistant products
Antioxidant D Thiodipropionate Talk Liquid – 0.2~0.4 Stable for ultraviolet light, especially suitable for photovoltaic components and charging pile shells

Note: When using it, the appropriate antioxidant type and ratio should be selected according to the specific application scenario.

5. Current status of domestic and foreign research

(I) Progress in foreign research

European and American countries began to explore the application of polyurethane composite antioxidants in the industrial field as early as the late 20th century. For example, DuPont has developed a new synergistic antioxidant formula designed for electric vehicle charging facilities that can maintain material performance for up to 10 years of service life. In addition, the German BASF Group has also launched a series of high-performance antioxidant products, and its core technology is to improve the uniform distribution of antioxidants in the substrate through nano-scale dispersion technology.

(II) Domestic research results

In recent years, my country’s scientific research institutions and enterprises have made significant breakthroughs in the field of polyurethane composite antioxidants. The team from the Department of Chemical Engineering of Tsinghua University proposed an antioxidant system based on an intelligent response mechanism, which can automatically adjust antioxidant activity according to changes in the external environment, greatly improving the adaptability of the material. At the same time, a chemical company in Jiangsu successfully achieved low-cost large-scale production, which steadily increased the share of this type of product in the domestic market.

VI. Case Analysis

(I) Practical application of a certain brand of charging piles

A well-known brand charging pile manufacturer has introduced the polyurethane composite antioxidant C in its products. After three years of field testing, it has shown that compared with traditional polyurethane materials without antioxidants, the surface yellowing rate of the new formula materials is reduced by 70%, the mechanical strength is improved by 20%, and the overall life is increased by about 50%.

(II) International Project Cooperation

In a multinational cooperation project, a Chinese company and a German partner jointly developed a charging pile shell material suitable for extremely cold areas. By optimizing the antioxidant formula, the material successfully overcomes the problem of low-temperature brittle cracking and meets the strict usage requirements of the Nordic region.

7. Development trends and prospects

As the electric vehicle market continues to expand, the demand for charging facilities will continue to grow, which puts higher demands on polyurethane composite antioxidants. Future research directions may include the following aspects:

  1. Green and environmentally friendly: Develop new antioxidants that are low in toxic and easy to degrade to reduce their impact on the environment.
  2. Intelligent upgrade: Use IoT technology and sensors to monitor material status and adjust antioxidant activity in real time.
  3. Multifunctional Integration: Combine antioxidants with other functional additives (such as flame retardants, antibacterial agents) to create a comprehensive protection solution.

8. Conclusion

Polyurethane composite antioxidants are like an unknown but indispensable “guardian”, providing strong guarantees for electric vehicle charging facilities. It not only extends the service life of the equipment, but also reduces maintenance costs and promotes sustainable development throughout the industry. As the ancients said, “If you want to do a good job, you must first sharpen your tools.” Only by constantly improving material technology can electric vehicles truly drive towards a better tomorrow!

Extended reading:https://www.bdmaee.net/niax-ef-100-low-odor-strong-foaming-catalyst-momentive/

Extended reading:https://www.cyclohexylamine.net/monobutylzinntricchlorid-cas-1118-46-3/

Extended reading:https://www.newtopchem.com/archives/39385

Extended reading:https://www.cyclohexylamine.net/dabco-dc1-delayed-catalyst-dabco-dc1/

Extended reading:https://www.newtopchem.com/archives/1061

Extended reading:https://www.newtopchem.com/archives/39808

Extended reading:https://www.newtopchem.com/archives/44183

Extended reading:https://www.newtopchem.com/archives/44006

Extended reading:https://www.newtopchem.com/archives/40271

Extended reading:https://www.bdmaee.net/dabco-t-16-catalyst-cas10102-43-9-evonik-germany/

How polyurethane composite antioxidants improve aircraft interior decoration

3月 16th, 2025 News

Polyurethane composite antioxidant: “beautician” for aircraft interior decoration

In the field of modern aircraft manufacturing, how to allow passengers to feel comfort and peace of mind at an altitude of 10,000 meters is an eternal topic. As an important part of this topic, aircraft interior decoration not only needs to meet aesthetic needs, but also has excellent durability and safety. The polyurethane composite antioxidant is a “behind the scenes hero” who shines on this stage. It is like a skilled beautician, injecting lasting vitality and protection into the interior decoration materials of the aircraft.

1. Basic concepts of polyurethane composite antioxidants

(I) What is polyurethane composite antioxidant?

Polyurethane composite antioxidant is a chemical additive specially used to improve the antioxidant properties of polyurethane materials. Its main function is to inhibit the occurrence of oxidation reactions and delay the aging process of the material, thereby maintaining the physical properties and appearance quality of the material. This additive is usually composed of a variety of antioxidant components and can cope with both radical-induced oxidation reactions and metal ion-catalyzed oxidation reactions.

(II) Why choose polyurethane composite antioxidants?

In the interior decoration of aircraft, polyurethane materials are widely used for their excellent flexibility, wear resistance and sound insulation properties. However, polyurethane materials are easily affected by factors such as oxygen, ultraviolet rays and high temperatures during long-term use, resulting in degradation in their performance and even cracking and fading. At this time, polyurethane composite antioxidants become the key to solving the problem. It can effectively extend the service life of the material, reduce maintenance costs, and ensure that the decoration is always the same as new.

In order to understand the mechanism of action of polyurethane composite antioxidants more intuitively, we can compare the changes in material properties after unadditive and antioxidants are not added through the following table:

Performance Metrics No antioxidant added After adding antioxidants
Tension Strength (MPa) Gradually falling Basically stable
Elongation of Break (%) Reduced significantly Important improvement
Color stability Easy to fade Keep bright for a long time
Thermal aging time (hours) Important deterioration after 500 hours Still performing well over 1000 hours

It can be seen from the table that polyurethane composite antioxidants improve material performance in all aspects, making it an ideal choice in the field of aircraft interior decoration.

2. The principle of action of polyurethane composite antioxidants

To understand how polyurethane composite antioxidants work, we need to first understand the aging mechanism of polyurethane materials. Simply put, the aging process of polyurethane mainly includes the following steps:

  1. Free Radical Generation: Under the action of oxygen or ultraviolet rays, certain bonds in the polyurethane molecular chain will break, forming unstable free radicals.
  2. Chenge Reaction: These free radicals will further react with other molecules, producing more free radicals, thereby triggering a chain reaction.
  3. Material Deterioration: As the reaction progresses, the polyurethane molecular chain gradually breaks, eventually leading to a decline in material performance.

Polyurethane composite antioxidants work by blocking the above process. Depending on the way it works, it can be divided into the following categories:

  • Free Radical Capture Antioxidants: This type of antioxidant can directly bind to free radicals and terminate the chain reaction. For example, phenolic antioxidants are typical radical-capturing antioxidants.
  • Peroxide decomposition antioxidants: This type of antioxidant reduces the source of free radical formation by decomposing peroxides. Thioesters are often used as peroxide decomposition antioxidants.
  • Metal ion chelating agent: Metal ions (such as iron ions and copper ions) are important factors in catalytic oxidation reactions. By adding metal ion chelating agent, the catalytic action of metal ions can be effectively suppressed.

The following is a comparison of the main characteristics of the three types of antioxidants:

Antioxidant Types Mechanism of action Pros Disadvantages
Free radical capture antioxidants Catch free radicals and terminate chain reaction Excellent effect and wide application scope CostHigher
Peroxide decomposition antioxidants Decompose peroxides to reduce free radical formation High cost-effectiveness Limited effect on certain materials
Metal ion chelating agent Inhibition of catalytic effects of metal ions Improve the overall stability of the material Required to be used with other antioxidants

It can be seen that a single type of antioxidant often struggles to meet all needs. Therefore, polyurethane composite antioxidants usually adopt a multi-component combination to achieve a more comprehensive protective effect.

III. Application of polyurethane composite antioxidants in aircraft interior decoration

(I) Characteristics and challenges of aircraft interior decoration

Aerial interior decoration materials need to meet a series of strict requirements, including but not limited to the following points:

  1. Lightweight Design: The aircraft is extremely sensitive to weight, so the decorative materials must be as light as possible.
  2. Weather Resistance: The aircraft is in a high-altitude environment for a long time, and the decorative materials need to be able to withstand ultraviolet radiation and extreme temperature differences.
  3. Fireproofing performance: The interior space of the aircraft is small, and once a fire occurs, the consequences will be unimaginable. Therefore, decorative materials must have good fire resistance.
  4. Environmentality: With the increasing awareness of environmental protection, aircraft manufacturers are increasingly paying attention to material recyclability and low volatile organic compounds (VOC) emissions.

Polyurethane composite antioxidants help aircraft interior decorative materials better meet these challenges by optimizing material performance.

(II) Analysis of specific application scenarios

1. Seat cushions and armrests

Seat cushions and armrests are one of the most frequently used components in aircraft interior decoration. As passengers frequently contact these parts, the wear resistance and comfort of the material are particularly important. The application of polyurethane composite antioxidants can significantly improve the durability of the material while maintaining a soft feel and bright color.

2. Ceiling and side wall panels

The ceiling and side wall panels are not only an important part of the interior decoration of the aircraft, but also perform sound insulation and heat insulation functions. These parts usually require thicker polyurethane foam. However, foam materials tend to become brittle or even collapse due to oxidation during long-term use. By adding polyurethane composite antioxidants, this process can be effectively delayed and ensure long material performanceThe period is stable.

3. Carpet and floor covering

Carpet and floor coverings need to withstand frequent trampling and friction, so they have high requirements for material wear resistance and slip resistance. In addition, these components need to have good antibacterial properties to prevent bacterial growth. Polyurethane composite antioxidants can not only improve the mechanical properties of the material, but also work in concert with other functional additives to further enhance the comprehensive performance of the material.

4. Domestic and foreign research progress and technical trends

(I) Current status of foreign research

European and American countries have started early in the research of polyurethane composite antioxidants and have achieved a series of important results. For example, BASF, Germany has developed a new composite antioxidant, which uses nanoscale dispersion technology to achieve better antioxidant effects at lower additions. DuPont, the United States, focuses on developing versatile antioxidant formulas, allowing them to meet the requirements of weather resistance, fire resistance and environmental protection at the same time.

(II) Domestic research progress

In recent years, my country has also made great progress in the field of polyurethane composite antioxidants. The Institute of Chemistry of the Chinese Academy of Sciences has successfully developed a green antioxidant based on natural plant extracts. The product not only has superior performance, but also fully complies with the requirements of the EU REACH regulations. In addition, the intelligent antioxidant system developed by Tsinghua University and many companies can automatically adjust its antioxidant capacity according to environmental conditions, showing huge application potential.

(III) Future technology trends

With the development of technology, the technological trend of polyurethane composite antioxidants is developing in the following directions:

  1. Intelligence: By introducing sensor technology and artificial intelligence algorithms, dynamic regulation of antioxidants can be achieved.
  2. Green: Develop more antioxidants based on renewable resources to reduce the impact on the environment.
  3. Multifunctionalization: combine antioxidant functions with other properties (such as antibacterial and fire protection) to develop integrated solutions.

5. Conclusion

Although polyurethane composite antioxidants seem inconspicuous, they play a crucial role in the field of aircraft interior decoration. It not only extends the service life of the material, but also improves the decorative effect and brings passengers a more comfortable ride experience. As the saying goes, “Details determine success or failure.” It is precisely by paying attention to every detail that polyurethane composite antioxidants inject lasting vitality into the interior decoration of the aircraft.

In the future, with the continuous emergence of new materials and new technologies, the application prospects of polyurethane composite antioxidants will be broader. Let us look forward to this “beautician” in the aircraft decoration collarMore exciting performances in the domain!

Extended reading:https://www.newtopchem.com/archives/45071

Extended reading:https://www.bdmaee.net/cyclohexylamine-series-products/

Extended reading:https://www.bdmaee.net/wp-content/uploads/2022/08/60.jpg

Extended reading:https://www.newtopchem.com/archives/43964

Extended reading:https://www.bdmaee.net/fentacat-f15-catalyst-cas11103-53-3-solvay/

Extended reading:https://www.newtopchem.com/archives/45022

Extended reading:https://www.newtopchem.com/archives/1013

Extended reading:https://www.bdmaee.net/wp-content/uploads/2022/08/22-2.jpg

Extended reading:https://www.bdmaee.net/fascat4202-catalyst-cas-77-58-7-dibbutyl-tin-dilaurate/

Extended reading:https://www.newtopchem.com/archives/40304

Application of polyurethane composite antioxidants in the construction of rail transit facilities

3月 16th, 2025 News

Polyurethane composite antioxidants: escort the construction of rail transit

1. Introduction: A battle against time

In the modern industry, the aging problem of materials is like an inevitable competition for time. Whether it is automotive tires, building exterior walls, or plastic parts in electronic equipment, over time, these materials lose their original properties due to oxidation. In rail transit facilities, this aging problem is like a “invisible killer”, quietly threatening the safety and stability of train operations.

Polyurethane (PU) as a high-performance polymer material plays an indispensable role in rail transit facilities. From the seats in the car to the shock absorbing pads on the tracks to the waterproof coating in the tunnel, the polyurethane figure is everywhere. However, polyurethane itself is not a “indestructible body”. It will also be affected by factors such as oxygen, ultraviolet rays and high temperatures, resulting in performance degradation and even failure. At this time, polyurethane composite antioxidants became the “guardian” in this time competition.

So, what are polyurethane composite antioxidants? How can it play a role in the construction of rail transit facilities? Next, we will explore this mysterious but important field of materials science in an easy-to-understand language. At the same time, we will also unveil the veil of polyurethane composite antioxidants through rich tabular data and domestic and foreign literature references.

2. Polyurethane composite antioxidants: definition and classification

(I) What is polyurethane composite antioxidant?

Polyurethane composite antioxidant is a chemical additive specially designed to protect polyurethane materials from oxidative degradation. Simply put, its task is to delay or prevent the aging caused by exposure to oxygen or other environmental factors during use of polyurethane materials. This is like putting a “protective jacket” on polyurethane, allowing it to maintain its original performance for a longer period of time.

Depending on the mechanism of action, polyurethane composite antioxidants are mainly divided into the following two categories:

  1. Main antioxidant
    The main antioxidant acts to directly capture free radicals, thereby interrupting the chain reaction. Common primary antioxidants include amines and phenolic compounds. They are like “fire extinguishers”, quickly extinguishing the “flame” caused by oxidation.

  2. Auxiliary antioxidants
    Auxiliary antioxidants are responsible for decomposing peroxides and reducing the formation of free radicals. Such antioxidants generally include thioesters and phosphite compounds. If the main antioxidant is a “frontline fighter”, then the auxiliary antioxidant is a “logistics support force”, and the two can achieve good results by working together.

(II) Advantages of composite antioxidants

Although a single type of antioxidant is effective, it often has limitations. For example, some primary antioxidants may gradually fail due to excessive volatility; while some secondary antioxidants may be sensitive to specific environmental conditions. Therefore, scientists have developed “compound antioxidants” – products that mix multiple antioxidants in a certain proportion. This composite formula not only gives full play to the advantages of each component, but also makes up for each other’s shortcomings, thereby achieving longer-lasting and more comprehensive antioxidant protection.

Antioxidant Types Functional Features Common Representatives
Main antioxidant Catch free radicals BHT, Irganox 1076
Auxiliary Antioxidants Decomposition of peroxides DNP, Tinuvin 292

By reasonably matching different types of antioxidants, composite antioxidants can meet the needs of various complex working conditions in rail transit facilities. For example, adding composite antioxidants to polyurethane foam seats used in high-speed train compartments can not only extend their service life, but also ensure that passengers’ comfort during riding is not affected.

III. Application of polyurethane composite antioxidants in rail transit

(I) Rail shock absorption system: Make trains more stable

In rail transit, rail shock absorbing systems are a crucial component. It effectively reduces noise and improves passengers’ riding experience by absorbing the vibration and impact forces generated when the train is running. Polyurethane elastomers are one of the ideal materials for manufacturing track shock absorbers.

However, due to long-term exposure to outdoor environments, track shock absorbers are susceptible to UV radiation and humid and hot climates, which accelerate the aging process. At this time, polyurethane composite antioxidants are particularly important. It can significantly improve the weather resistance and fatigue resistance of polyurethane elastomers, so that the track shock absorber can maintain a stable working state even under harsh conditions.

Material location User scenarios Compound antioxidant effect
Rail shock absorber High-speed railway Improving weather resistance and fatigue resistance

(II) Interior of the car: Create a safe and comfortable ride environment

Add to a modern lineYou will find that there are a large number of parts made of polyurethane materials, such as seats, floor coverings and ceiling decorative panels. These components not only need to have good physical and mechanical properties, but also must comply with strict fire and flame retardant standards.

To meet the above requirements, engineers will add an appropriate amount of composite antioxidant to the polyurethane raw material. In this way, even after years of use, the interior of the car can still maintain bright colors and soft feel, while not releasing harmful substances that harm passengers’ health.

Application Scenario Additional range (wt%) Main effects
Seat Foam 0.3-0.5 Extend life and improve feel
Floor Covering 0.2-0.4 Prevent cracking and enhance wear resistance

(III) Tunnel waterproof coating: resists underground moisture erosion

For underground rail transits such as subways and light rails, tunnel waterproofing is a technical problem that cannot be ignored. Once the waterproof layer is damaged or failed, it will not only cause water seepage problems to affect the normal operation of the train, but may also endanger the safety of the entire tunnel structure.

Polyurethane coatings have become the first choice material in tunnel waterproofing projects due to their excellent adhesion and sealing properties. In order to further improve its durability, construction workers usually add composite antioxidants to the coating formulation. The advantage of this is that even in high humidity and low ventilation environments, the waterproof coating can still maintain good elasticity and toughness, truly achieving “no leakage”.

Projects Using Phase Antioxidant concentration recommendations
Subway Tunnel Initial Construction 0.5 wt%
Long-term maintenance Later fix 0.8 wt%

IV. Domestic and foreign research progress and technical parameters

(I) International Research Trends

In recent years, with the rapid expansion of rail transit networks around the world, scientific research institutions and enterprises in various countries have increased their investment in research on polyurethane composite antioxidants. For example, BASF, Germany, recommendedA new product called Irgastab® PU 28 has been released, designed for polyurethane rigid foam with excellent antioxidant and environmentally friendly properties.

At the same time, DuPont is also actively developing a new generation of multifunctional composite antioxidants. Their goal is to create a new additive that can both delay material aging and enhance mechanical properties. At present, this study has achieved initial results and has been practically applied in some high-end rail transit projects.

(II) Current domestic development status

In my country, the research and development of polyurethane composite antioxidants has also achieved remarkable achievements. A group of scientific research institutions represented by the Institute of Chemistry, Chinese Academy of Sciences have successfully developed a series of high-performance composite antioxidants suitable for the field of rail transit through the optimized combination of different types of antioxidants.

In addition, many well-known domestic companies are also actively participating in technological innovation in this field. For example, the HBA series composite antioxidants launched by Nanjing Hongbaoli Group have won wide recognition in the market for their excellent cost-effectiveness and stable quality.

Company Name Product Model Feature Description
BASF Irgastab® PU 28 High-efficiency, antioxidant, green and environmentally friendly
Nanjing Red Baoli HBA-200 High cost-effectiveness and strong applicability

(III) Key Performance Indicators

Whether in the international or domestic market, an excellent polyurethane composite antioxidant needs to meet the following performance indicators:

  1. Antioxidation efficiency
    Key parameters for measuring whether antioxidants can effectively delay material aging. It is usually evaluated by measuring the thermal weight loss rate of the sample at high temperatures.

  2. Compatibility
    Ensure that the antioxidant can be evenly dispersed in the polyurethane matrix without causing problems such as phase separation or surface precipitation.

  3. Migration
    Control the speed of antioxidants moving from the inside to the outside of the material to avoid degradation of protection due to excessive loss.

  4. Toxicity and Environmental Protection
    While meeting functional requirements, try to chooseSelect low-toxic or even non-toxic raw materials to meet increasingly stringent environmental protection regulations.

Performance metrics Test Method Reference value range
Antioxidation efficiency Thermogravimetric analysis method ?90%
Compatibility Microscopy Observation No obvious stratification
Migration Simulation Experiment ?0.1 wt%/year

5. Future development trends and prospects

With the continuous advancement of science and technology, the application prospects of polyurethane composite antioxidants in the field of rail transit will be broader. On the one hand, the emergence of new materials and new processes will promote the continuous innovation of antioxidant technology; on the other hand, the development trend of intelligence and greenness will also bring more opportunities and challenges to this industry.

For example, future composite antioxidants may combine nanotechnology and biobased materials to achieve higher efficiency and lower environmental burden. At the same time, predictive maintenance technology based on big data analysis is also expected to be introduced into rail transit facility management, making the use of antioxidants more accurate and efficient.

In short, polyurethane composite antioxidants, as an important tool to ensure the safe and reliable operation of rail transit facilities, will continue to play an irreplaceable role in future urban development. Let us wait and see and witness the wonderful transformation in this field together!

Extended reading:https://www.cyclohexylamine.net/low-odor-catalyst-dabco-amine-catalyst/

Extended reading:https://www.newtopchem.com/archives/843

Extended reading:https://www.cyclohexylamine.net/polyurethane-tertiary-amine-catalyst-dabco-2039-catalyst/

Extended reading:https://www.newtopchem.com/archives/39995

Extended reading:<a href="https://www.newtopchem.com/archives/39995

Extended reading:https://www.cyclohexylamine.net/butyltin-acid-monobutyltin-oxide/

Extended reading:https://www.newtopchem.com/archives/44797

Extended reading:https://www.newtopchem.com/archives/1878

Extended reading:https://www.newtopchem.com/archives/216

Extended reading:https://www.cyclohexylamine.net/delayed-catalyst-sa-1-polycat-sa-1/

Extended reading:https://www.newtopchem.com/archives/968

1•10351036103710381039•2238
Page 1037 of 2238