Improving the mechanical and ceramifiable properties of low temperature prepared silicone rubber composites

Silicone rubber has been widely used in electronic appliances, nuclear power cable, aerospace and so on, However, silicone will continue to burn when exposed flame, flame retardant modification is required. In this work, aluminum hypophosphite (AHP) Mica were fluxing agent make ceramizable material (CSR). The ceramization mechanism was investigated based on microstructure, mechanical retardation properties. scanning electron microscope result shows that the addition of AHP reduce temperature effectively. AHP/Mica modified CSR have better properties than pure rubber, increase LOI 33.9%, 34.8% UL-94 FV1 as 25 parts are added. When 10 phr replaces Mica, compression strength reach 14.46 MPa, increased by 42.5%. Moreover, phenomenon expansion into ceramics founded studied.