Heat-proof and heat-insulating material as well as preparation method and application thereof

The invention belongs to the technical field of chemical engineering and materials, and particularly relates to a heat-proof and heat-insulating material as well as a preparation method and application thereof. The heat-proof and heat-insulating material is prepared from the following raw materials in parts by weight: 80 to 100 parts of alkoxy-terminated phenyl organosilicon polymer, 1 to 2 parts of surface modifier, 20 to 30 parts of reinforcing filler, 20 to 30 parts of ablation-resistant filler, 20 to 80 parts of heat-insulating filler, 5 to 10 parts of curing agent, 0.5 to 1 part of catalyst and 300 to 400 parts of diluent. The heat-proof and heat-insulation material not only has relatively loose construction conditions, good processability, good adhesion and wide material application range, but also has the characteristics of high temperature resistance, ablation resistance and high shear resistance, can be used in the field of heat protection materials of a new generation of aerospace crafts, and can me