Preparation method of toughened pressure-resistant ablation-resistant material

Abstract

The invention relates to the technical field of preparation of polymer composite materials, and in particular relates to a preparation method of a toughened pressure-resistant ablation-resistant material. Methyl silicone oil is cracked to obtain a cracked product, the cracked product is mixed with xylene to obtain a concentrated liquid, a binder is prepared from zirconium boride powder and the concentrated liquid as raw materials, finally white corundum, obsidian, aluminium oxide powder and other raw materials are mixed and stirred, carbon fiber cloth is coated with a high temperature resistant solution to obtain high temperature resistant carbon fiber cloth, and hot pressing and curing are performed on the high temperature resistant carbon fiber cloth to obtain the toughened pressure-resistant ablation-resistant material. Expanded graphite improves the heat dissipation area of the outer surface of the ablation-resistant material to cool a carbonization layer of the ablation-resistantmaterial, polycarbosilane cracked silicon carbide whiskers are filled in the ablation-resistant material to serve a toughening effect, and a formed zirconium dioxide-silicon dioxide film reduces outward stress generated due to expansion at high temperature, so that the compressive strength of the ablation-resistant material under high temperature environment is improved, and the toughened pressure-resistant ablation-resistant material has broad application prospects.

Description

technical field [0001] The invention relates to the technical field of polymer composite material preparation, in particular to a preparation method of a toughened, pressure-resistant and ablation-resistant material. Background technique [0002] In recent years, technologies such as aerospace and ballistic missiles have made great progress. Ablation-resistant insulation material is one of the key materials used. Ablation-resistant insulation materials usually refer to composite materials that are applied at a heating rate greater than 500°C / s, working temperature greater than 2000°C, and need to withstand high-speed airflow erosion and high-speed particle erosion. They are important engineering materials in the fields of national defense and aerospace. [0003] The friction between the aircraft and the atmosphere during flight will generate a high temperature of thousands of degrees Celsius, which will burn the entire aircraft. The high temperature and high pressure gas p...

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Problems solved by technology

[0007] The technical problem mainly solved by the present invention is aimed at the current phenolic resin matrix as the ablation-resistant material matrix, which has excellent performance, low price and is widely used, but the phenolic resin is brittle, has a high molding shrinkage rate an

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