Composite material bracket body and preparation method thereof

Abstract

The invention provides a composite material bracket body and a preparation method thereof, and the composite material bracket body is used for solving the various problems such as large density and low strength of a metal material bracket body. The composite material bracket body comprises three parts, namely an air-tight layer, a bearing layer and a structure layer, wherein the air-tight layer is formed by curing bisphenol A epoxy resin, methyl tetrahydrophthalic anhydride, a glass fiber surfacing mat and glass fiber plain cloth; the bearing layer is formed by curing 3K carbon fiber epoxy plain prepreg; the structure layer is formed by curing 12K carbon fiber epoxy plain prepreg. The preparation method of the composite material bracket body comprises the following steps: 1, designing and manufacturing a compression molding mold from the product structure; 2, performing layer lay-up design according to the structure of the bracket body; 3, cutting the prepreg; 4, simultaneously laying up upper and lower dies of the mold; 5, closing and curing; 6, demolding; 7, deburring and deflashing. The composite material bracket body has the advantages of stable product structure and product size, heat resistance, corrosion resistance and weight of only 1 / 5 of that of a metal material.

Description

technical field [0001] The invention relates to a preparation method of a bracket body, in particular to a preparation technology of a composite material bracket body. Background technique [0002] With the rapid development of aerospace technology, a large number of fuel engines have been used as power propulsion systems. Therefore, the bracket body, as a key component for carrying gas pressure, preventing the gas from directly scouring the aircraft and providing support and power propulsion, has been widely used in various aerospace launchers or launching devices. Taking the launch tube bracket body as an example, in addition to the above functions, it must also have many composite functions such as light weight, high strength, heat resistance, erosion resistance, and reusability. [0003] However, the traditional metal material bracket has heavy weight, low strength, long processing cycle and poor weather resistance. It needs special protection and treatment during stora...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a composite material bracket body and its preparation method, which can solve many problems such as high density, low strength, low specific modulus, long processing cycle, and poor weather resistance of the metal material bracket body.

Images