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Comparative analysis of the performance of phenyl vinyl silicone rubber and other silicone rubber materials

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There are significant differences in performance between phenyl vinyl silicone and other silicone materials, which are specifically reflected in the following aspects:

Cold resistance and elasticity: Increasing the phenyl content in silicone rubber will increase the rigidity of the molecular chain, thereby reducing the cold resistance and elasticity of silicone rubber. Therefore, phenyl vinyl silicone may be somewhat inferior in these respects relative to other silicone materials.

Ablation resistance and radiation resistance: Medium phenyl silicone rubber (phenyl content reaches 20~34%) has the characteristics of ablation resistance, while high phenyl silicone rubber (phenyl content reaches 35~50%) has excellent Radiation resistance. This gives phenylvinyl silicone an advantage in these specific application scenarios.

Oil resistance: Ordinary silicone rubber has poor oil resistance, mainly due to its small intermolecular force and similar solubility parameters to hydrocarbons. Fluorosilicone rubber is made by introducing fluoroalkyl groups into the molecular chain of methylvinyl silicone rubber. This improvement significantly improves the oil resistance of silicone rubber. Therefore, fluorosilicone may be advantageous in applications requiring oil resistance.

High Temperature Resistance: Silicone offers high temperature resistance up to 250°C, while fluorosilicone combines the high liquid resistance of fluorocarbon with the extreme temperature stability of silicone, maintaining its performance at temperatures above 204°C Stablize. This gives fluorosilicone rubber better stability in high temperature environments.

Other properties: Silicone also has good electrical insulation properties, high breathability, and weather resistance (not affected by ozone, and its physical properties will only change slightly under ultraviolet rays and other climate conditions for a long time). These properties make silicone widely used in aerospace seals, automotive gaskets and other fields.

In summary, phenyl vinyl silicone has excellent performance in ablation resistance and radiation resistance, while fluorosilicone rubber has advantages in oil resistance and high temperature resistance. Silicone is used in many fields due to its good electrical insulation properties, high air permeability and weather resistance. When choosing silicone materials, you need to make trade-offs and choices based on specific application scenarios and needs.

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