| abstract |
The invention relates to a nanoporous antioxidant resin-based composite material and a preparation method thereof. The composite material comprises the following components in mass percentage: 20-80ωt% of antioxidant resin, 20-80ωt% of reinforcing body, through: (1) anti-oxidation Oxidized resin solution preparation; (2) low pressure RTM impregnation; (3) sol-gel reaction; (4) drying of composite material, and finally obtained. Compared with the prior art, the composite material prepared by the present invention has the advantages of light weight, high strength, excellent thermal insulation, ablation resistance, adjustable nanoparticle network structure, etc., and the synergistic effect of physical and chemical antioxidants makes the preparation Compared with traditional resins, the anti-oxidation performance of the matrix resin is greatly improved, and it has the advantages of good anti-oxidation in the environment of 600-2000 ℃, and can be widely used in the external heat protection system of hypersonic aircraft in the aerobic atmosphere. |