Ultrafine silicon carbide high silica fiber reinforced phenolic heat resistant composite material and preparation method thereof

Abstract

Relating to the technical field of heat resistant composite materials, the invention discloses an ultrafine silicon carbide high silica fiber reinforced phenolic heat resistant composite material. The composite material comprises the following raw materials by weight: ammonia phenolic resin, glass fiber, superfine aluminum hydroxide, mica, silicon carbide, a silane coupling agent, calcium stearate and silicon nitride, etc. The composite material provided by the invention has good molding processability, a formed part has a smooth surface and high production and processing efficiency, and the product has high comprehensive yield. Artificial weather modification rocket projectile parts made from the material have excellent heat resistant and ablation resistant properties, and can meet the heat resistant and ablation resistant performance requirements of rocket projectile engine parts. The preparation method of the ultrafine silicon carbide high silica fiber reinforced phenolic heat resistant composite material provided by the invention can be completed by general industrial equipment, has low requirement for equipment complexity, and has the advantages of easy operation, stable process and high production efficiency, thus being suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of heat-resistant composite materials, in particular to an ultrafine silicon carbide high-silica fiber-reinforced phenolic heat-resistant composite material and a preparation method thereof. Background technique [0002] At present, engineering plastics or glass fiber reinforced phenolic composite materials are mostly used in rocket engine components for artificial weather modification, and there are several problems in use: [0003] (1) The heat resistance of the material is not high. During the flight of the rocket, the engine’s rigidity decreases due to heat, causing engine failure or failure, resulting in the problem of bomb drop, resulting in failure of the rocket and other safety hazards; [0004] (2) The ablation resistance of the formed parts of the rocket engine is not good. During the working process of the engine, the nozzle throat, the throat liner and other components fail due to insufficient ab...

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Problems solved by technology

[0003] (1) The heat resistance of the material is not high. During the flight of the rocket, the engine’s rigidity decreases due to heat, causing engine failure or failure, resulting in the problem of bomb drop, resulting in failure of the rocket and other safety hazards;

[0004] (2) The ablation resistance of the formed parts of the rocket engine is not good. During the working process of the engine, the nozzle throat, the throat liner and other components fail due to insufficient ablation resistance, resulting in the flight distance of the rocket not meeting the requirements, affecting the performance of the rocket and reducing the performance of the rocket. Weather Modification Efficiency

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