The difference between vulcanized antioxidants and antioxidants

In the field of modern rubber processing and material science, vulcanized antioxidants and antioxidants are two important functional additives, which play a key role in the performance optimization of rubber products. Due to the significant differences in their functions and application areas, many professionals are easily confused or misused when using them. This article will analyze the difference between vulcanized antioxidants and antioxidants in detail from the perspective of theory and practical application, and help readers better understand the characteristics of these two functional agents and their application in rubber processing.

1. Vulcanized Antioxidant Action Mechanism and Application Field

A vulcanized antioxidant is a chemical agent that inhibits the vulcanization of rubber during storage or use. Vulcanization reaction is the main way of rubber body structure degradation, especially in the presence of oxygen and light. The vulcanization reaction will cause the rubber to lose its elasticity, become hard and brittle, and affect its performance. The vulcanized antioxidant reacts with oxygen to generate stable and harmless intermediates, thereby effectively inhibiting the occurrence of the vulcanization reaction. Therefore, the sulfur antioxidant can extend the storage period and service life of rubber and improve the stability of rubber products.

Typical application areas for vulcanized antioxidants include:

1. Rubber products storage: in the rubber processing is completed, vulcanized antioxidant is added to the storage environment, effectively delay the rubber vulcanization process, protect the rubber performance.
2. Automobile tire manufacturing: tire rubber formula usually add vulcanized antioxidants to ensure that the tire in long-term use will not be due to vulcanization reaction and failure.
3. Industrial rubber products: such as conveyor belts, o-rings, etc., vulcanized antioxidants can extend its service life and improve overall performance.

From the mechanism of action, the vulcanized antioxidant mainly inhibits the destruction of rubber by oxygen through chemical reaction, and its core function is to delay the vulcanization reaction.

2. antioxidant action principle and application characteristics

An anti-aging agent is an additive that can inhibit the structural aging function of rubber caused by environmental factors (such as high temperature, high humidity, etc.) during storage or use. During the storage of rubber, due to the cross-linking reaction and the breakage of the molecular chain, aging phenomenon will occur, causing the rubber to become hard, brittle, and lose its elasticity. Anti-aging agents slow down the aging process of rubber by inhibiting free radicals or other oxidation reactions, thereby extending the service life of rubber.

The application characteristics of antioxidants are mainly reflected in the following aspects:

1. High temperature storage: suitable for rubber in high temperature environment storage, such as industrial rubber and plastic products.
2. High humidity environment: can effectively deal with the rubber in high humidity conditions of aging problems, extend the use of products.
3. Outdoor products: suitable for outdoor rubber products, such as tents, backpacks, etc., antioxidant can protect the rubber in the outdoor environment from aging and failure.

From the perspective of the principle of action, the antioxidant mainly inhibits the free radical reaction and redox reaction to slow down the fracture of the rubber molecular chain, thereby protecting the structural integrity of the rubber.

3, vulcanized antioxidant and antioxidant main difference

Although vulcanized antioxidants and antioxidants are closely related to the stability and service life of rubber, there are significant differences in their functions, mechanisms of action and application areas:

1. Function:

• Vulcanized antioxidants: inhibit the vulcanization reaction and delay the rubber's storage period.
• Anti-aging agent: inhibit rubber aging, extend rubber in a specific environment life.

1. Reaction mechanism:

• Sulfurized antioxidants through the chemical reaction to consume oxygen, prevent the vulcanization reaction.
• Anti-aging agent by inhibiting free radical reaction and redox reaction, slow rubber structure aging.

1. Applicable scenarios:

• Vulcanized antioxidants are suitable for rubber storage and use environments, especially in the absence of oxygen or weak oxygen conditions.
• Antioxidant suitable for high temperature, high humidity and other harsh environment of rubber products, protect the rubber in these conditions of stability.

1. Add:

• Vulcanized antioxidants are usually in powder or liquid form, the action time is longer.
• Anti-aging agent in liquid form to add, can quickly with the rubber body reaction.

1. Use recommendations:

• Vulcanized antioxidants are suitable in rubber formulations as long-term stability strengthening agents.
The
• anti-aging agent is suitable for rubber products requiring long-term environmental resistance as a maintenance additive.

4, vulcanized antioxidant and antioxidant comprehensive application

In actual production, vulcanized antioxidants and antioxidants can usually be used in combination to achieve better results. For example, adding vulcanized antioxidants and antioxidants to the rubber formulation can simultaneously solve the problems of vulcanization reaction and rubber aging, thereby extending the storage period and service life of the rubber.

In practical applications, users need to pay attention to the following points:

1. Ingredient characteristics: vulcanized antioxidant and antioxidant chemical properties are different, the use of the need according to the rubber formula characteristics to select the appropriate amount of addition.
2. Storage conditions: vulcanized anti-aging agents need to be in the appropriate storage conditions, to avoid other chemical components of the reaction.
3. Test and verification: Before practical application, it is recommended to conduct small-scale experiments on vulcanized antioxidants and antioxidant formulations to verify their effects and stability.

5. Conclusion

Vulcanized antioxidants and antioxidants are two important functional additives in the field of rubber processing, which play an important role in rubber stability, service life and performance optimization. The selection and use of appropriate functional agents can effectively improve the quality and use of rubber products. In practical applications, users need to reasonably match vulcanized antioxidants and antioxidants according to the formulation characteristics, use environment and storage conditions of rubber to achieve the best comprehensive effect.

Through in-depth understanding of the differences and characteristics of vulcanized antioxidants and antioxidants, chemical industry professionals can better use these functional additives to provide strong support for the development and production of rubber products.