A high-precision carbon fiber aluminum honeycomb sandwich structure reflecting surface manufacturing method

Abstract

The invention provides a high-precision carbon fiber aluminum honeycomb sandwich structure reflecting surface manufacturing method. Manufacturing of a carbon fiber aluminum honeycomb sandwich structure reflecting surface is realized by the steps of mould manufacturing, metal spraying, formation of front and rear sheaths, formation of a sandwich structure and formation of the reflecting surface through assembling. Surface metallization is realized by using the technological method of metal spraying, and the problem that conventional electroplating or vacuum plating cannot meet the requirement of surface metallization of the large-size reflecting surface can be overcome. According to the metal spraying technological parameters, thickness can be controlled within 60-70 microns after two times of spraying, and thickness can be controlled within 80-90 microns after three times of spraying so that influence on surface quality of the manufactured product and actual precision of an antenna caused by penetration of carbon fiber epoxy prepreg to the surface of a metal layer due to excessively low thickness of spraying can be avoided.

Description

technical field [0001] The invention relates to the technical field of reflective surface manufacturing, in particular to a method for manufacturing a high-precision carbon fiber aluminum honeycomb sandwich structure reflective surface. Background technique [0002] With the development of aerospace technology, developed countries have developed the molding technology of carbon fiber composite materials in the early 1970s. At present, the structural materials of spaceborne high-precision antennas are dominated by carbon fiber composite materials (CFRP). Among ground equipment, millimeter-wave and sub-millimeter-wave high-precision, high-stability parabolic antennas of various calibers have also been successfully used in developed countries. It can be said that the emergence of carbon fiber composite materials and the research on application technology have caused a revolution in the structure, design and molding process of high-precision antennas. At present, the existing r...

AI Technical Summary

Problems solved by technology

The existing method of surface metallization of the emitting surface mainly adopts the method of electroplating or vacuum plating. Since electroplating or vacuum plating requires special tooling equipment, and with the development of aerospace technology, the size of the reflective surface is getting larger and larger. The existing electroplating Or vacuum plating tooling equipment has been difficult to meet the size requirements of the reflective surface

[0003] In the prior art, such as "Research and Application of Carbon Fiber Antenna Surface Metallization" (Li Jinliang et al., "Antenna and Servo Technology", Volume 35, No. 4, 2009, pages 33-35), and the applicant's application Patents (201310512004.3) and others all disclose the use of the transfer method to realize the surface metallization of the reflective surface of the composite material antenna. If the transfer method is not implemented properly and the mold is not handled well, the metal layer will not be completely transferred to the surface of the composite material part; The core of the transfer method is the transfer film technology. At present, various research and development units that use the transfer method to form the antenna reflector regard it as a technical secret and do not make it public. Therefore, there is a lack of transfer film-related technologies in the current known technologies.