Preparation method for mold of carbon fiber composite integrated shell structure

Abstract

A preparation method for a mold of a carbon fiber composite integrated shell structure includes the following steps that firstly, the mold is manufactured according to dimension requirements of the carbon fiber composite integrate shell structure, wherein the mold comprises a male mold body and a female mold body; secondly, the male mold body is assembled; thirdly, carbon fiber preimpregnated cloth is cut according to the layering manner of the carbon fiber composite integrated shell structure; fourthly, the surface of the female mold body and the surface of the male mold body are cleaned with alcohol, and a mold release agent is sprayed; fifthly, the carbon fiber preimpregnated cloth is laid on the surface of the male mold body; sixthly, the female mold body is assembled, and the female mold body is attached to the inner portion of the completely-laid shell structure; seventhly, a spliced female mold cavity is filled with iron sand; eighthly, the mold for a carbon fiber composite integrated shell is packaged through a vacuum bag, and vacuum pumping is conducted; ninthly, the whole mold subjected to vacuum pumping is sent into an autoclave through a transport vehicle to be solidified; and tenthly, the solidified mold is taken out of the autoclave, and the carbon fiber composite integrated shell structure is obtained.

Description

【Technical field】 [0001] The invention provides a carbon fiber composite material integrated shell structure mold making and preparation method, belonging to the field of aerospace technology. 【Background technique】 [0002] In recent years, various countries are conducting research on stratospheric airship technology. Stratospheric airship is a new type of low-cost, low-energy stratospheric aircraft, which can serve as an important existence in the stratosphere to provide communication support, and plays a very important role in both military and civilian applications. In view of the application advantages of stratospheric airships such as long time in space, large load capacity, high cost-effectiveness, good stealth performance, and strong survivability, major aerospace countries have successively formulated stratospheric airship project plans, and actively carried out feasibility studies and key technologies. Research and flight test. With the continuous progress of the...

AI Technical Summary

Problems solved by technology

The carrying load of stratospheric satellites directly affects the degree of advancement of stratospheric satellites. Therefore, the weight reduction project of the hoisting truss and the connected shell structure of the aerostat is imminent. At present, the truss structures are all made of carbon fiber reinforced resin-based composite materials, and The connection between the metal shell structure and the stratospheric satellite truss structure is discrete, welding is difficult, the weight is heavy, and the electrical corrosion between the carbon fiber truss and the shell affects the performance of the stratospheric airship.

Images