Low-temperature-resistant high-strength fluorinated silicone rubber composition and preparation method thereof

Abstract

The invention relates to the technical field of fluorinated silicone rubber, in particular to a low-temperature-resistant high-strength fluorinated silicone rubber composition and a preparation method thereof. The rubber composition comprises the following raw materials in parts by mass: 100 parts of raw fluorosilicone rubber, 30-80 parts of white carbon black, 0-5 parts of a structure control agent, 0.1-1 part of a small molecular cage cross-linking agent and 0-2 parts of a vulcanizing agent, and the small molecular cage-shaped cross-linking agent is polysilsesquioxane. The glass transition temperature of the prepared material is lower than-60 DEG C, the tensile strength is larger than 10 MPa, and the material has excellent low-temperature resistance and mechanical strength and can meet the requirements of the fields of aerospace, polar equipment and the like for low-temperature-resistant high-strength rubber materials.

Images