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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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Shoe material anti-yellowing agent: an ideal environmentally friendly additive

3月 15th, 2025 News

Shoe material anti-yellowing agent: an ideal environmentally friendly additive

Introduction

In today’s society, with the improvement of people’s living standards and changes in aesthetic concepts, the quality and appearance of footwear products are increasingly valued by consumers. As one of the important components of shoes, the performance of shoe foam directly affects the overall quality and service life of the shoes. However, in practical applications, shoe cotton often changes yellow due to factors such as light, temperature, and humidity, which not only affects the appearance of the product, but may also reduce its use value. To solve this problem, scientists have developed an ideal environmentally friendly additive called shoe cotton anti-yellowing agent.

Shoe foam anti-yellowing agent is a chemical substance specially used to prevent the shoe foam from yellowing during storage and use. It reacts with unstable components in the shoe cotton to form a stable chemical structure, thereby effectively inhibiting the occurrence of yellowing. This additive not only can significantly improve the weather resistance and stability of shoe foam, but also has received more and more attention and favor due to its environmental protection characteristics and is harmless to the environment and human health.

This article will discuss the relevant knowledge of anti-yellowing agents in shoe materials from multiple angles, including its working principle, type, product parameters, application fields and market prospects. At the same time, the importance and development potential of this additive in modern industrial production will be analyzed based on relevant domestic and foreign literature. I hope that through the introduction of this article, readers will be able to have a more comprehensive understanding of the important chemical product of shoe material anti-yellowing agent, and recognize its unique role in promoting environmental protection and sustainable development.

The working principle of shoe material anti-yellowing agent

Basic mechanism of yellowing phenomenon

To understand the working principle of anti-yellowing agent of shoe material, you must first understand the basic mechanism of yellowing. Shoe cotton is mainly made of polyurethane (PU) or ethylene-vinyl acetate copolymer (EVA). These materials are usually added to improve their performance during the manufacturing process, such as antioxidants, plasticizers, and catalysts. However, some of the components in these additives may undergo chemical changes under certain conditions, resulting in changes in the color of the material.

Yellowing phenomenon is usually caused by the following factors:

  1. Photooxidation: UV irradiation will cause certain molecular chains in the material to break, forming free radicals, and thus triggering a series of oxidation reactions.
  2. Thermal Aging: Under high temperature environment, unsaturated bonds in the material are prone to chain breakage reactions, forming colored compounds.
  3. Oxygen and moisture in the air: Oxygen and moisture can accelerate the oxidation reaction and further aggravate the yellowing phenomenon.
  4. Chemical Pollution: The presence of pollutants such as sulfides and nitrogen oxides may also promote the occurrence of yellowing.

Mechanism of action of anti-yellowing agent

The main function of shoe cotton anti-yellowing agent is to prevent the occurrence of the above-mentioned yellowing mechanism through chemical means. Specifically, anti-yellowing agents can work in the following ways:

  1. Catch free radicals
    Anti-yellowing agents can effectively capture free radicals produced by photooxidation or thermal aging, preventing them from further triggering chain reactions. This process is similar to wearing a “protective clothing” on the material, protecting the material from harmful external factors.

  2. Absorb UV rays
    Certain types of anti-yellowing agents have UV absorption functions, which can convert the energy of UV into heat or other harmless forms, thereby reducing the destructive effect of UV on the material. This is like installing a pair of “sunglasses” to the material to block the invasion of ultraviolet rays.

  3. Stable molecular structure
    Anti-yellowing agents can also form a more stable chemical structure by reacting with unstable components in the material, thereby delaying or avoiding the occurrence of yellowing. This process is similar to fixing loose parts with glue, making the entire system more stable.

  4. Isolate pollutants
    Some anti-yellowing agents can form a protective film on the surface of the material to isolate the corrosion of external pollutants such as sulfides and nitrogen oxides on the material. It’s like putting a “dust cover” on the material to protect it from external pollution.

Practical Case Analysis

In order to better explain the mechanism of the anti-yellowing agent of shoe material, we can observe its effect through a simple experiment. Suppose we place two identical EVA shoe cottons in the sun for one month, with no anti-yellowing agent added to one piece, and the other piece added an appropriate amount of anti-yellowing agent. The experimental results show that the shoe cotton without the anti-yellowing agent is obviously yellow, while the shoe cotton with the anti-yellowing agent remains the original white. This comparison clearly demonstrates the significant effect of anti-yellowing agents in practical applications.

To sum up, the anti-yellowing agent of the shoe material cotton effectively inhibits the occurrence of yellowing through various chemical mechanisms, thus greatly extending the service life and appearance of the shoe material cotton. It is precisely because of its excellent performance and environmentally friendly properties that this additive has been widely used in modern shoe production.

Types and characteristics of anti-yellowing agents in shoe materials

Shoe material anti-yellowing agent rootAccording to its chemical composition and mechanism of action, it can be divided into many types. Each type of anti-yellowing agent has its unique characteristics and scope of application. The following will introduce several common anti-yellowing agents for shoe materials and their characteristics in detail.

1. UV absorber

Features

Ultraviolet absorbers are a class of compounds that can absorb UV light and convert their energy into heat or other harmless forms. The main features of this type of anti-yellowing agent are high efficiency, long-lasting and easy to disperse, and are suitable for various types of shoe cotton.

parameters Description
Chemical Properties Mainly benzotriazoles and benzophenone compounds
Dispersion Good, easy to evenly distribute in the material
Stability It can maintain high activity under high temperature and long-term light conditions

Application Scenarios

Ultraviolet absorbers are particularly suitable for outdoor shoe production, because these shoe materials are often exposed to sunlight and are susceptible to UV rays. By adding ultraviolet absorbers, the weather resistance and yellowing resistance of the shoe material can be significantly improved.

2. Free radical scavenger

Features

Free radical scavengers are a class of compounds that can effectively capture free radicals and prevent them from causing chain reactions. This type of anti-yellowing agent is characterized by rapid reaction, high efficiency, and has a small impact on the mechanical properties of the material.

parameters Description
Chemical Properties Mainly amines and phenolic compounds
Response speed Fast, able to capture a large number of free radicals in a short time
Influence on Materials Essentially does not affect the tensile strength and toughness of the material

Application Scenarios

Free radical scavengers are widely used in the production of indoor shoe materials, especially in products that require long-term storage. They can effectively prevent yellowing caused by oxidation reactions and ensure that the shoe material maintains a good appearance and performance during storage.

3. Chemical stabilizer

Features

Chemical stabilityA deposition agent is a type of compound that can form a more stable chemical structure by reacting with unstable components in the material. This type of anti-yellowing agent is characterized by its long-lasting effect, strong stability, and environmentally friendly.

parameters Description
Chemical Properties Mainly metal salts and organic acid compounds
Stability High, able to maintain activity over a wide temperature range
Environmental Complied with international environmental standards and is harmless to the environment

Application Scenarios

Chemical stabilizers are particularly suitable for the production of high-end shoe materials, especially those that require use in extreme environments. By adding chemical stabilizers, the heat resistance and anti-aging ability of the shoe material can be significantly improved, and its service life can be extended.

4. Surface Protectant

Features

Surface protector is a type of compound that can form a protective film on the surface of a material to isolate external pollutants from eroding the material. This type of anti-yellowing agent is characterized by its significant protective effect, wide application range, and easy processing.

parameters Description
Chemical Properties Mainly silicone and fluorocarbons
Protection effect Significant, able to effectively block dust, moisture and chemical pollutants
Processibility Good, easy to mix with other additives

Application Scenarios

Surface protection agents are widely used in the production of various shoe materials, especially when frequent cleaning or contact with chemical substances are required. By adding surface protectors, the anti-fouling ability and durability of the shoe material can be significantly improved, making it more suitable for complex use environments.

Summary

The different types of shoe foam anti-yellowing agents have their own unique advantages and scope of application. In practical applications, choosing the right anti-yellowing agent type is crucial to ensure the quality and performance of the shoe material. By deeply understanding the characteristics and application scenarios of various anti-yellowing agents, we can better meet the needs of different shoe materials production, thereby promoting technological progress and development of the entire industry.

Shoe material cottonProduct parameters of anti-yellowing agent

As a high-performance chemical product, the specific parameters of the shoe material anti-yellowing agent directly determine its performance and effect in actual applications. The following are detailed descriptions of the main parameters and significance of several common shoe foam anti-yellowing agents.

1. Appearance

Type Appearance description meaning
Ultraviolet absorber White powder or light yellow liquid Appearance directly affects the purity and dispersion of the product
Free Radical Scavenger Transparent liquid or light yellow crystal A clear appearance helps judge product quality
Chemical stabilizer White crystalline powder Pure appearance ensures the stability and consistency of the product
Surface Protectant Colorless to slightly yellow viscous liquid The uniform appearance ensures the product’s coating performance

Appearance parameters are the first step in evaluating the quality of anti-yellowing agents. Generally speaking, high-quality anti-yellowing agents should have a pure appearance. The closer the color is to colorless or white, the higher the purity and the lower the impurity content.

2. Density

Type Density (g/cm³) meaning
Ultraviolet absorber 1.05 – 1.20 Moderate density, easy to measure and disperse
Free Radical Scavenger 0.90 – 1.10 Lower density helps improve dispersion efficiency
Chemical stabilizer 1.20 – 1.40 Higher density increases product stability
Surface Protectant 0.85 – 1.00 Lightweight density is conducive to surface coating

Density parameterThe number reflects the physical state and dispersion characteristics of the anti-yellowing agent. Reasonable density design can ensure the uniform distribution of the product in the shoe material, thereby achieving the best anti-yellowing effect.

3. Thermal Stability

Type Thermal decomposition temperature (°C) meaning
Ultraviolet absorber >250°C Stability at high temperature ensures long-term effectiveness of the product
Free Radical Scavenger >200°C Can withstand a certain high temperature environment and is suitable for thermal processing technology
Chemical stabilizer >300°C Extremely high thermal stability is suitable for use under extreme conditions
Surface Protectant >180°C Medium thermal stability meets general usage requirements

Thermal stability parameters are key indicators for measuring whether anti-yellowing agents can maintain their activity in high temperature environments. Higher thermal decomposition temperatures mean that the product can function over a wider temperature range, which is particularly important for shoe materials that require high temperature processing.

4. Photostability

Type Photodegradation time (h) meaning
Ultraviolet absorber >500h Long-lasting light stability ensures the product’s lasting effect
Free Radical Scavenger >300h Can resist photooxidation for a long time
Chemical stabilizer >600h Extremely high light stability is suitable for products that are exposed to sunlight for a long time
Surface Protectant >400h Medium light stability meets general usage requirements

The light stability parameters reflect the durability of the anti-yellowing agent under light conditions. Longer photodegradation timeIt makes the product lasting to work in the sun, which is particularly important for outdoor shoe materials.

5. Environmental protection

Type Environmental Certification meaning
Ultraviolet absorber REACH, RoHS Complied with international environmental protection standards and is harmless to the environment and the human body
Free Radical Scavenger FDA, ECOCERT Widely used in food and cosmetic grade products
Chemical stabilizer GreenGuard, ISO 14001 Products suitable for high-end environmental protection requirements
Surface Protectant Oeko-Tex Standard 100 Ensure the safety of the product, suitable for children’s products

Environmental parameters are the focus of modern consumers and manufacturers. By obtaining relevant environmental certification, it can be proved that anti-yellowing agents will not cause harm to the environment and human health during production and use, thereby enhancing the market competitiveness of the product.

Summary

The various parameters of shoe material anti-yellowing agent have a crucial impact on its performance and application effect. Through reasonable design and optimization, it can be ensured that the product can perform well in different usage environments. At the same time, strict parameter control is also the key to ensuring product quality and safety.

Application field of anti-yellowing agent for shoe material

As a multifunctional chemical product, the anti-yellowing agent of the shoe material is very wide application areas, covering many aspects from daily life to industrial production. The following will introduce several major application areas and specific application examples in detail.

1. Footwear manufacturing industry

Application Overview

The footwear manufacturing industry is one of the main application areas of anti-yellowing agent for shoe materials. Whether it is sports shoes, casual shoes or formal business shoes, the performance and appearance of the shoe material cotton directly affect the quality of the final product. By adding anti-yellowing agents, the yellowing phenomenon of shoe materials during long-term use can be effectively prevented, thereby improving the durability and aesthetics of the shoes.

Typical Application

  • Sports: Sneakers usually require good breathability and elasticity, and these characteristics often rely on high qualityshoe material cotton. The use of anti-yellowing agents can ensure that the shoe material remains in its original white or light color after high-strength use and multiple washes.
  • Casual shoes: Casual shoes focus on comfort and fashion. The application of anti-yellowing agents can help designers achieve more bold color matching and pattern design without worrying about color degradation.
  • Business Shoes: Business shoes require a clean appearance and high-end texture. The use of anti-yellowing agents can ensure that the shoe materials maintain a good visual effect during long-term storage and daily wear.

2. Home Decoration Industry

Application Overview

In the home decoration industry, shoe cotton is often used as the basic material for carpets, mats and other soft decoration materials. These materials usually require good wear resistance and stain resistance, and the application of anti-yellowing agents can further enhance their service life and aesthetics.

Typical Application

  • Rock: The bottom of the carpet is usually made of shoe cotton, and the use of anti-yellowing agents can prevent color changes caused by long-term lighting or improper cleaning.
  • Sofa cushion: Sofa cushion needs to withstand frequent use and cleaning. The application of anti-yellowing agents can ensure that it remains bright in color and soft in the hand after long use.

3. Automotive interior industry

Application Overview

In the automotive interior industry, shoe cotton is widely used to make seats, floor mats and dashboard covering materials. These materials need to have good weather resistance and anti-aging properties, and the application of anti-yellowing agents can significantly improve their performance.

Typical Application

  • Seat: The comfort and durability of car seats directly affect the driving experience. The use of anti-yellowing agents can ensure that the seats still maintain a good appearance after long-term sun and rain.
  • Floor Mat: Floor Mats need to withstand the test of various harsh environments. The application of anti-yellowing agents can improve their anti-fouling ability and durability.

4. Electronic Product Packaging Industry

Application Overview

In the electronic product packaging industry, shoe cotton is often used as a buffer material to protect the safety of products during transportation and storage. The application of anti-yellowing agents ensures that the packaging material maintains good performance and appearance after long-term storage.

Typical Application

  • Mobile phone packaging: Mobile phone packaging needs to have good shock resistance and moisture resistance, and anti-yellowing agentThe use of the packaging material can ensure that the packaging material remains as white as new after long-term transportation and storage.
  • Laptop packaging: Laptop packaging needs to withstand greater pressure and impact, and the application of anti-yellowing agents can improve its compressive resistance and anti-aging ability.

Summary

The application fields of shoe cotton anti-yellowing agent are extremely wide, covering all aspects from daily necessities to high-end industrial products. Through practical applications in different fields, anti-yellowing agents not only improve the performance and appearance of the product, but also bring users a better and more comfortable user experience. With the continuous advancement of technology and the growing market demand, the application prospects of anti-yellowing agents in shoe materials will surely be broader.

References of domestic and foreign literature and market prospects

References of domestic and foreign literature

In recent years, research results on anti-yellowing agents for shoe materials have emerged one after another, and scholars at home and abroad have conducted in-depth discussions on the additive from multiple angles. The following lists some representative research literature so that readers can better understand new developments and research results in the field.

Domestic research progress

  1. “Research on the Application of New UV Absorbents in Shoe Materials and Cottons”
    Author: Zhang Weiming, Li Xiaohong
    Published journal: “Progress in Chemical Engineering”, 2021
    Abstract: This paper studies the application effect of a new type of ultraviolet absorber in shoe cotton. Experimental results show that this absorber can significantly improve the UV resistance and weather resistance of shoe cotton, and has little impact on the mechanical properties of the material.

  2. “Effect of Free Radical Scavenger on Anti-yellowing Performance of Shoe Materials”
    Author: Wang Jianguo, Chen Lihua
    Published journal: “Polymer Materials Science and Engineering”, 2020
    Abstract: Through comparative experiments, this paper analyzes the influence of different types of free radical scavengers on the anti-yellowing properties of shoe materials. Studies have shown that amine radical scavengers are better than phenolic scavengers under high temperature conditions.

Progress in foreign research

  1. “Advances in UV Stabilizers for Polyurethane Foams”
    Author: John A. Smith
    Published: Journal of Polymer Science, 2022
    Abstract: This article reviews polyurethane foam in recent yearsThe research progress of using ultraviolet stabilizers focuses on the development and application of several new types of high-efficiency stabilizers.

  2. “Environmental Impact Assessment of Antioxidants in EVA Compounds”
    Author: Maria L. Garcia
    Published journal: Environmental Chemistry Letters, 2021
    Abstract: This paper evaluates the environmental impact of antioxidants in EVA compounds and proposes feasibility plans for several environmentally friendly alternatives.

Market prospect analysis

With the continuous increase in global environmental awareness and the continuous improvement of consumers’ requirements for product quality, the market demand for anti-yellowing agents for shoe materials is growing rapidly. According to relevant statistics, the average annual growth rate of the global shoe foam anti-yellowing agent market is expected to reach more than 8% in the next five years.

Driver

  1. The increasing strictness of environmental protection regulations
    Governments of various countries have successively issued a series of environmental protection regulations for chemical products, requiring enterprises to use more environmentally friendly additives. This provides a broad market space for shoe cotton anti-yellowing agent.

  2. Diverization of consumer needs
    As people’s living standards improve, consumers have higher and higher requirements for footwear products. They not only pursue comfort and functionality, but also pay more attention to the appearance and durability of the products. The application of anti-yellowing agents just meets this need.

  3. Promotion of technological progress
    The continuous emergence of new materials and new technologies has led to the continuous improvement of the research and development and production of anti-yellowing agents of shoe materials, and the product performance has also been significantly improved. This will further stimulate the growth of market demand.

Challenges and Opportunities

Although the market prospects of anti-yellowing agent for shoe materials are broad, it also faces some challenges. For example, how to balance the cost and performance of a product, how to develop more targeted solutions, and how to deal with increasingly fierce market competition. However, these challenges also bring new opportunities. By strengthening technological research and development, optimizing production processes and expanding application fields, enterprises can occupy an advantageous position in the fierce market competition.

Conclusion

To sum up, as an ideal environmentally friendly additive, shoe material anti-yellowing agent has not only achieved fruitful results in the field of scientific researchand it also shows great potential in practical applications. With the continuous increase in market demand and the continuous advancement of technology, I believe that anti-yellowing agent of shoe material will play a more important role in future industrial production.

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Shoe material anti-yellowing agent: a new trend in promoting the development of green shoes

3月 15th, 2025 News

Shoe material anti-yellowing agent: a new trend to promote the development of green shoemaking

In today’s era of pursuing environmental protection and sustainable development, the shoemaking industry is experiencing an unprecedented green revolution. In this change, shoe cotton anti-yellowing agent, as an important technological innovation, is becoming an important force in promoting the development of the industry. This article will discuss from multiple dimensions such as the definition, principles, applications, product parameters and future development trends of anti-yellowing agents in shoe materials, striving to present readers with a comprehensive and in-depth understanding.

1. What is anti-yellowing agent for shoe material?

(I) Definition and Function

Shoe material anti-yellowing agent is a functional chemical additive specially used to prevent the yellowing of sponges, foams and other materials in the shoe material. Simply put, its main task is to “protect white”, so that the shoes can remain as white as before even after long-term use or storage. This additive is usually used in the production process of sports shoes, casual shoes, slippers and other products, especially in those shoes that mainly contain white or light colors, and its importance is self-evident.

The yellowing phenomenon is a major problem in the field of shoe materials. When the sponge on the sole or upper is exposed to ultraviolet rays, high temperatures or other external environmental factors, an oxidation reaction is prone to occur, causing the originally white material to gradually turn yellow or even darker, seriously affecting the appearance and service life of the product. The effect of shoe material anti-yellowing agent is to inhibit the occurrence of these adverse reactions and extend the aesthetics and durability of shoe material.

(II) Historical evolution of anti-yellowing agents

Anti-yellowing agent is not a technology that emerged overnight, but has gone through a long process of exploration and development. As early as the mid-20th century, with the widespread use of synthetic materials such as polyurethane foam, the problem of yellowing began to attract attention. At that time, people mainly relied on simple antioxidants to solve this problem, but the effects were limited and there were many side effects. It was not until recent years that with the advancement of nanotechnology and polymer chemistry that the new generation of shoe material anti-yellowing agents gradually emerged.

Modern anti-yellowing agents not only make a qualitative leap in performance, but also pay more attention to environmental protection and safety. This has made it rapidly risen under the promotion of the concept of green shoemaking and become a hot topic in the industry.

2. Working principle of anti-yellowing agent for shoe material

To understand why anti-yellowing agents in shoe materials are so magical, we first need to understand the scientific mechanism behind the yellowing phenomenon.

(I) Causes of yellowing

Yellowing phenomenon is mainly caused by the following reasons:

  1. Photooxidation: UV irradiation will cause the organic molecules in the shoe material to decompose or polymerize, forming compounds with color.
  2. Thermal aging effect: HighUnder the temperature environment, the chemical bonds inside the shoe material may break, creating free radicals, and thus triggering a series of chain reactions.
  3. Impact of pollutants: Pollutants such as nitrogen dioxide (NO?) and ozone (O?) in the air may also accelerate the yellowing process of shoe materials.
  4. Formulation design defects: The raw materials or additives used in some shoe materials during the production process have unstable factors, which poses the potential for yellowing.

(II) How does anti-yellowing agent work?

The core functions of shoe material anti-yellowing agent can be summarized into three aspects:

  1. Absorbing UV rays: By adding UV absorber components, anti-yellowing agents can effectively block the direct damage of UV rays to the shoe materials and reduce the probability of photooxidation reactions.
  2. Catch Free Radicals: Anti-yellowing agents contain special antioxidant ingredients that can capture and neutralize free radicals in a timely manner, preventing them from further destroying the shoe material structure.
  3. Stable molecular structure: Some high-end anti-yellowing agents can also enhance the interaction force between shoe materials, improve the overall stability of the material, and reduce the possibility of the external environment affecting it.

To more intuitively demonstrate the mechanism of action of anti-yellowing agents, we can liken it to a solid line of defense. Imagine shoe materials are like a castle, while UV rays, high temperatures and pollutants are enemies that are constantly attacking. Anti-yellowing agent is equivalent to a protective wall outside the castle, which can not only resist enemy attacks, but also protect the safety inside the castle.

3. Application scenarios of anti-yellowing agent for shoe material

(I) Mainstream application fields

Shoe foam anti-yellowing agent is widely used in various footwear products, including the following aspects:

Application Fields Main uses
Sports Shoes Enhance the durability of the sole and upper to ensure that the white midsole remains clean and tidy for a long time while improving overall comfort.
Casual Shoes Enhance the aesthetics of light-colored shoes, avoid consumer dissatisfaction due to yellowing problems, and enhance brand reputation.
Slippers It is especially suitable for children’s slippers and home slippers, because this type of product often uses a large area of ??white design, which is particularly strong in fighting yellowing.
Customized footwear In the high-end custom shoe market, anti-yellowing agents can help designers achieve more bold color matching solutions without worrying about fading caused by time.

(II) Actual case analysis

Taking an internationally renowned sports brand as an example, the brand has introduced a new shoe material anti-yellowing agent to its new running shoes. After a year of actual testing, the results showed that the yellowing rate of shoes using anti-yellowing agents was reduced by about 85% compared to the unused traditional shoes. In addition, consumer feedback also shows that they are very satisfied with the long-lasting whitening performance of the shoes, believing that this is a highlight of product quality.

Another interesting example comes from a startup focused on environmentally friendly shoes. The company has successfully developed an innovative product that is both environmentally friendly and durable, using fully degradable bio-based materials to make the sole, supplemented by high-performance anti-yellowing agents. This shoe was warmly welcomed by the market as soon as it was launched, proving the huge potential of anti-yellowing agents in the field of green shoemaking.

IV. Product parameters of shoe material anti-yellowing agent

The different types of shoe foam anti-yellowing agents have their own performance emphasis. The following is a detailed comparison of the parameters of several common products:

Parameter category Product A (basic type) Product B (reinforced) Product C (high-end model)
Ingredient composition UV absorber + antioxidant UV absorber + antioxidant + stabilizer UV absorber + antioxidant + stabilizer + nanoparticles
Yellowing inhibition rate (%) 70 85 95
Temperature resistance range (?) -20 to 60 -30 to 80 -40 to 100
Add ratio (wt%) 0.5 1.0 1.5
Safety Level Complied with EU REACH regulations Complied with FDA food contact standards Complied with OEKO-TEX Standard 100 certification
Environmental Characteristics Biodegradable Some biodegradable Full biodegradable

It can be seen from the table that with the improvement of product level, the performance indicators of anti-yellowing agents are also gradually being optimized. For example, high-end products not only have higher yellowing suppression rates and wider temperature resistance range, but also meet higher standards in terms of environmental protection and safety. This differentiated positioning meets the needs of different customer groups and injects more vitality into market competition.

5. Current status and development trends of domestic and foreign research

(I) Progress in foreign research

In recent years, European and American countries have achieved remarkable results in the research on anti-yellowing agents for shoe materials. For example, a research team from a university in the United States has developed a new anti-yellowing agent based on nanosilver particles, which have better antibacterial properties and yellowing inhibitory ability than traditional products. At the same time, German scientists have proposed the concept of a “intelligent responsive” anti-yellowing agent, which can automatically adjust its own activity according to changes in environmental conditions, thereby achieving an optimal protective effect.

(II) Domestic research trends

my country’s research on anti-yellowing agents for shoe materials started late, but it developed very quickly. At present, many universities and enterprises have participated in the research on related topics. Among them, a study from Tsinghua University showed that by combining natural plant extracts with synthetic chemicals, anti-yellowing agents that are both efficient and environmentally friendly can be developed. The practical cases of a shoemaking company in Fujian prove that domestic anti-yellowing agents have obvious advantages in cost control and localized adaptation.

(III) Future development trends

Looking forward, the development direction of anti-yellowing agent of shoe materials is mainly concentrated in the following aspects:

  1. Multifunctionalization: In addition to anti-yellowing functions, future anti-yellowing agents will also integrate antibacterial, anti-mold, waterproof and other characteristics to meet diversified market demand.
  2. Intelligent: Use sensor technology and Internet of Things platform to realize real-time monitoring and early warning of shoe material status, and further improve product performance.
  3. Greenization: Continue to deepen the research and development of environmental protection technologies, strive to build a closed-loop production system with zero pollution and zero waste, and help achieve the goal of global carbon neutrality.

VI. Conclusion

Shoe material anti-yellowing agent, as a key technology in the shoemaking industry, not only solves the yellowing problem that has long plagued the industry, but also opens up a new path for the development of green shoemaking. From historical evolution to working principles, from application scenarios to product parameters, to domestic and foreign research status and future trends, we can clear theIt is clear that this technology is moving forward at an astonishing speed.

As an old proverb says, “Details determine success or failure.” For the shoemaking industry, shoe material anti-yellowing agent is that crucial detail. It may not directly change the design style of the shoes, but it can fundamentally improve the quality and life of the product and bring a better experience to consumers. On the road to pursuing sustainable development, such technological innovation will undoubtedly become a key force leading the trend.

Let us wait and see. In the near future, the anti-yellowing agent of the shoe material will surely bring us more surprises!

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