The base compound of the hydrosilylation reaction-curing type heat-curing silicone rubber is methyl vinyl silicone rubber, and its vulcanizing agent system includes a crosslinking agent, a catalyst, and an inhibitor. The various components are scientifically mixed and combined to produce mixed silicone rubbers with different process performance and serviceability. The cross-linking agent of the hydrosilylation-type reaction-vulcanization type heat-curable silicone rubber is a methyl-hydrogensiloxane polymer containing a plurality of silicon-hydrogen bonds. Relative to most methyl vinyl silicone rubbers, usually containing 0.3 to 0.6% hydrogen-containing silicone oil as a crosslinking agent, the cured silicone rubber can achieve better mechanical properties. Platinum catalysts are compounds or complexes containing platinum, such as chloroplatinic acid-isopropanol solution, platinum-tetrahydrofuran complex, platinum-methylvinylsiloxane complex, platinum-diethyl phthalate Ester complexes, etc.

Among them, the platinum-methylvinylsiloxane coordination complex prepared from chloroplatinic acid and tetramethyldivinyldisiloxane has the highest catalytic efficiency. Quinoline, pyridine, tert-butyl hydroperoxide, and alkyne derivatives all have inhibitory effects on the hydrosilylation reaction. At present, the most commonly used inhibitors are alkynol organic compounds. In addition, a microcapsule-encapsulated platinum catalyst with an appropriate low softening point can be used to isolate the catalyst from the silicone rubber compound, which can be formulated into a single-component heat-cured silicone rubber. When the heating temperature is higher than the microcapsule softening point, the platinum catalyst is released, and further Catalyze hydrosilylation reaction and complete cross-linking sulfuration.