Waveguide tube preparation method and waveguide tube

Abstract

The invention provides a waveguide tube preparation method and a waveguide tube. The waveguide tube preparation method comprises the following steps: manufacturing a core mold; spraying a main salt solution and a reducing agent solution on the surface of the core mold, and mixing to form a metal layer of which the main material is silver; paving a carbon fiber prepreg on the surface of the metal layer; carrying out vacuum heating curing molding; and removing the core mold to prepare the waveguide tube. After the technical scheme is adopted, the composite material with the thermal expansion coefficient of zero is adopted, so that the electrical property of the prepared waveguide tube is not influenced by the external temperature, and the electrical property is stable.

Description

technical field [0001] The invention relates to the field of aerospace science and technology, in particular to a waveguide preparation method and the waveguide. Background technique [0002] Waveguide is mainly used in communication, satellite ground station, microwave measurement and other fields. For the preparation of the waveguide, it is generally prepared from metal materials by mechanical processing or electroplating the inner surface of the resin material pipe, and finally forms a carbon fiber composite material waveguide. There are two main molding methods for carbon fiber composite material waveguide: one kind of composite material waveguide is formed by solidifying the composite material on the tooling mold, grinding and polishing the inside of the tube, and then electroplating the metal layer, and finally combining it; the other One is the overall one-step molding process. First, the metal layer is electroplated on the tooling mold for forming the waveguide. Aft...

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Problems solved by technology

[0003] The above two existing preparation processes mainly have the following defects: (1) For the process of solidifying the carbon fiber composite material tube first, and then electroplating a metal layer on its inner wall, the adhesion of the electroplated metal layer is poor, and as the length of the waveguide increases, increase, the probability of coating unevenness is higher, and the possibility of metal coating bulging is also greatly increased; (2) For the overall one-step molding process, the mold will be corroded during the demoulding process, so a mold can only To prepare a product, the cost of the mold is high, the production cycle is long, and the removal time of the mandrel is long. Each mandrel needs to be soaked in an alkaline solution for five to six days and nights, which will also have a potential impact on the composite material and its metal coating itself. the destruction of

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