Lightweight temperature-resistant thermal insulation material and preparation method thereof

The invention relates to a light temperature-resistant thermal insulation material and a preparation method thereof. The method comprises the following steps: uniformly mixing polymer resin, a curing agent, a catalyst and an inorganic filler to obtain a mixture; coating the mixture on the single surface of the fiber cloth and curing to obtain the fiber cloth of which the single surface is coated with a coating; the n pieces of fiber cloth with the single faces coated with the coatings and the n-1 pieces of inorganic fiber felt are alternately arranged, and the light temperature-resistant and heat-insulating material is prepared; the surface, coated with the coating, of the fiber cloth is attached to the inorganic fiber felt; n is not less than 2. The fiber cloth, the inorganic filler and the inorganic fiber felt are organically combined through the multi-layer structural design, the performance advantages of the material are exerted to the maximum extent, the heat conductivity of the composite material is red