Ablation-resistant silicon resin modified silicone rubber heat-proof coating and preparation method thereof

The invention belongs to the field of coatings, and particularly relates to an ablation-resistant silicon resin modified silicone rubber heat-proof coating and a preparation method thereof. The coating comprises the following raw materials: 80-100 parts of vinyl silicone oil (silicone rubber), 20-80 parts of vinyl MQ silicone resin, 20-30 parts of an ablation-resistant filler, 20-30 parts of a heat-insulating filler, 5-15 parts of a dimensional filler, 10-30 parts of a flame retardant, 3-5 parts of a hydrogen-containing silicone oil cross-linking agent, 0.1-1.0 part of a catalyst and 200-300 parts of a diluent. The organic silicon elastoplastic body formed by the vinyl silicone oil and the vinyl MQ silicone resin has better mechanical properties, also has the characteristics of high temperature resistance and ablation resistance, and can be used as a basic polymer of a high-temperature-resistant ablation-resistant heat-proof coating material for a solid rocket engine. The long-time high-shear-resistant heat-p