Under high temperature conditions, ordinary silicone rubber is prone to side chain oxidation crosslinking and main chain cyclization degradation, resulting in a significant decrease in its mechanical properties and elasticity. To solve this problem, hexaphenylcyclotrisilazane, as an efficient heat-resistant agent, has become an ideal choice for improving the heat resistance of silicone rubber. The following are its key roles and application advantages in silicone rubber:

1. Excellent heat resistance
Hexaphenylcyclotrisilazane molecules contain phenyl groups, which have large steric hindrance, making it exhibit excellent stability under high temperature conditions. Even when heated for a long time at a high temperature of 400°C, it can form a bulk polymer through a debenzenization reaction, providing silicone rubber with long-lasting heat-resistant protection and effectively preventing the material from failing due to high temperature.

2. Inhibition of oxidative crosslinking and degradation
Under high temperature conditions, the side chains of silicone rubber are prone to oxidative crosslinking, while the main chain may undergo cyclization degradation, causing the material to become hard and brittle. Hexaphenylcyclotrisilazane can effectively inhibit the occurrence of these reactions, maintain the elasticity and mechanical properties of silicone rubber, and extend its service life.

3. Improve mechanical properties in high temperature environments
Hexaphenylcyclotrisilazane can not only improve the heat resistance of silicone rubber, but also enhance its mechanical properties in high temperature environments. It can improve the tensile strength, tear resistance and wear resistance of silicone rubber, so that it can still maintain good physical properties under high temperature conditions.

4. Wide range of applications
Due to its excellent heat resistance, hexaphenylcyclotrisilazane is widely used in various high-temperature silicone rubber products, such as:
High-temperature wires and cables: used to protect the cable insulation layer from aging and cracking in high temperature environments.
Seals and gaskets: high-temperature resistant sealing materials used in automobiles, aerospace and other fields.
Industrial equipment: rubber parts used in high temperature environments, such as pipe linings, valve seals, etc.

5. Easy to process and use
Hexaphenylcyclotrisilazane is soluble in organic solvents such as toluene and heptane, making it easy to mix with silicone rubber. Its high purity and stable chemical properties ensure its high efficiency and consistency in the production process.

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