A kind of ablation material composited by fiber cloth and preparation method thereof

Abstract

The invention relates to an ablation material compounded by fiber cloth and a preparation method thereof. The outer layer of the ablation material is an ablation layer mainly composed of viscose-based carbon fiber cloth and phenolic resin, and the inner layer is composed of phenolic resin and micro Balls form a thermal insulation layer; viscose-based carbon fiber cloth is formed by interweaving warp yarns and weft yarns. All warp yarns on the viscose-based carbon fiber cloth are parallel to the plane where any curved warp yarn is located, and all weft yarns are parallel to any curved warp yarn. The planes where the weft yarns are located are parallel, the warp density and weft density are the same everywhere; the preparation method is as follows: several layers of viscose-based carbon fiber cloth are stitched with several strands of polyacrylonitrile carbon fiber to obtain a prefabricated part; the prefabricated part is impregnated with phenolic resin and The ablation layer is obtained after hardening treatment; the ablation layer and the heat insulating layer are molded to obtain an ablation material; the method of the invention can prepare a viscose-based carbon fiber cloth with a specific curved surface shape; The thermal protection ability of corrosion-resistant materials is sufficient, the weight is light, and there is no failure in use.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to an ablation material composed of fiber cloth and a preparation method thereof. Background technique [0002] With the rapid development of aerospace technology in recent years, the research on near-space vehicles and long-duration flight weapons has attracted widespread attention from all over the world. When the aircraft cruises at supersonic speed, breaks out of the atmosphere, and returns to the ground, its surface often faces harsh working environments with high temperature, high pressure, high heat flow, and high enthalpy. The surface temperature of the material can reach thousands of degrees Celsius; therefore, in order to protect the aircraft and its In order to prevent the internal structure from being burned, thermal protection measures need to be taken to keep the aircraft and its internal structure working within a safe temperature range. On the other hand, ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem of safety caused by the weak point of the ablation material in the prior art, and to provide an ablation material composited by fiber cloth and its preparation method

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