Silicone rubber is particularly suitable for the production of aerospace sealing materials for the following reasons:
Excellent high and low temperature resistance: the main chain of silicone rubber is composed of silicon atoms and oxygen atoms alternately, with high bond energy, stable structure, and can maintain good toughness in a wide temperature range, so it can withstand the extreme temperature changes that may occur in the aerospace environment.
Excellent chemical stability: silicone rubber because its side chain is methyl, vinyl and other organic groups, while Si-O bond has a larger bond Angle than C-C bond, molecular chain has higher flexibility, which makes silicone rubber has good toughness, chemical stability and thermal stability, high temperature resistance, cold resistance, radiation resistance, can maintain its performance in harsh chemical environment.
Good sealing performance: silicone rubber because of its excellent flexibility and elasticity, can be tightly fitted to various shapes of sealing surface, to achieve effective sealing effect.
Excellent anti-aging performance: silicone rubber is not easy to age during long-term use, and can maintain long-term sealing performance to meet the requirements of long-term stability of materials in the aerospace field.
In summary, silicone rubber because of its unique physical and chemical properties, making it an ideal choice for aerospace sealing materials. However, different aerospace sealing needs may require different kinds of silicone rubber, so in practical applications, it is necessary to choose the appropriate type of silicone rubber according to the specific needs.