Compound antioxidants: Guardian of green production

In today's era of pursuing sustainable development, composite antioxidants are gradually becoming star roles in industrial production. It is not only a symbol of technological progress, but also a practitioner of environmental protection concepts. Just like an invisible guardian, silently protecting their lifespan and quality in the world of materials such as plastics, rubbers and polymers. This article will deeply explore the definition, classification, application of composite antioxidants and their important contribution to green production, and will unveil the mystery of this "hero behind the scenes" to you through detailed product parameter analysis and domestic and foreign research data.

What are compound antioxidants?

Composite antioxidants are a mixture of multiple antioxidant components designed to improve the aging resistance of materials. Simply put, it is like putting a protective jacket on the material, which can effectively resist the damage caused to the material by the external environment (such as oxygen, ultraviolet rays, etc.). This additive can not only extend the service life of the product, but also reduce environmental pollution caused by material degradation. Therefore, it is widely used in many fields such as plastics, rubbers, and coatings.

From the chemical structure, composite antioxidants usually contain a variety of ingredients such as main antioxidants (such as hindered phenolic compounds), auxiliary antioxidants (such as phosphite compounds), and stabilizers. These ingredients each perform their own functions and work together to achieve an excellent antioxidant effect. For example, the main antioxidant is responsible for capturing free radicals and preventing the expansion of the oxidation reaction chain; while the auxiliary antioxidant decomposes peroxides, further inhibiting the occurrence of the oxidation process.

Classification and Characteristics of Complex Antioxidants

According to different functional needs, compound antioxidants can be divided into the following categories:

1. Stealed phenolic composite antioxidants
   This type of antioxidant is known for its excellent free radical capture ability and is often used in polymer materials to delay the occurrence of thermal oxygen aging. Typical representatives include antioxidant 1010, antioxidant 1076, etc.

2. Phosophite composite antioxidants
   It mainly exerts antioxidant effects by decomposing hydroperoxides and is suitable for materials that require higher transparency or higher color stability.

3. Thioester compound antioxidants
   It has strong synergistic effects and is especially suitable for antioxidant protection under high temperature conditions.

4. Multifunctional composite antioxidant
   Combining the above types of features, multiple protection mechanisms can be provided at the same time, and is a popular category of products on the market.

Category	Property Description	Typical Application
Stealed Phenols	Efficiently capture free radicals to prevent chain reaction expansion	Polyolefins, engineering plastics
Phosophites	Decompose peroxides to improve processing stability	Polycarbonate, polyester
Thioesters	Synonyms are significant and suitable for high temperature environments	Rubber Products
Multifunctional composite antioxidant	Comprehensive multiple antioxidant mechanisms, strong adaptability	High-end packaging materials

Application scenarios of composite antioxidants

Composite antioxidants have an extremely wide range of applications, covering almost all industries involving polymer materials. Here are some typical examples:

• Automotive Industry: Adding composite antioxidants to automotive plastic parts can significantly improve the durability and reliability of parts.
• Food Packaging: By using environmentally friendly composite antioxidants, ensure that the packaging materials will not deteriorate due to oxidation during long-term storage.
• Building Materials: Adding appropriate composite antioxidants to PVC pipes and boards can enhance their weather resistance and mechanical strength.
• Electronics: Provides long-lasting antioxidant protection for wire and cable sheaths to ensure the safety of equipment operation.

The promoter of green production

As the global awareness of environmental protection continues to increase, composite antioxidants, as an important part of green production, are playing an increasingly important role. On the one hand, it helps to extend the service life of the material and reduces resource waste; on the other hand, many new composite antioxidants themselves also have good biodegradability, reducing potential harm to the environment.

Study shows that the rational use of composite antioxidants can extend the service life of certain plastic products by more than 50%, which not only means less waste production, but also lower carbon emissions. For example, a German study found that polypropylene film treated with high-efficiency composite antioxidants can maintain excellent physical properties even after multiple recycling.

In addition, some special formula composite antioxidants developed in recent years can even be automatically decomposed under specific conditions intoHarmless substances truly achieve the full environmental protection management of "from cradle to grave".

Progress in domestic and foreign research

In order to better understand the mechanism of action of composite antioxidants and their optimization direction, scientists have conducted a large number of experimental research. A new report from DuPont in the United States shows that by adjusting the proportion of components in the composite antioxidant, its performance under extreme temperature conditions can be significantly improved. The research team of Toray Co., Ltd. in Japan found that when certain natural-derived antioxidants (such as vitamin E derivatives) are combined with traditional chemical synthetic antioxidants, they can achieve more ideal results.

In China, researchers from the Department of Chemical Engineering of Tsinghua University proposed a new method for preparing composite antioxidant based on nanotechnology. This method can not only greatly improve antioxidant efficiency, but also have better dispersion and compatibility. This innovative achievement provides an important reference for the technological upgrading of relevant industries in my country.

Conclusion

To sum up, composite antioxidants are not only indispensable key additives in modern industry, but also important tools to achieve green production goals. In the future, with the continuous advancement of science and technology, I believe that more efficient and environmentally friendly composite antioxidants will be released, bringing more convenience and safety to our lives.

Let us look forward to the performance of this "Invisible Guard" in the future!

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