Preparation method of surface film-containing radome for protecting radar signal receiver

Abstract

The invention provides a preparation method of a surface film-containing radome for protecting a radar signal receiver. The preparation method comprises the following steps: performing surface heat treatment on a radome made of common E glass fiber plain weave fabrics; removing an impregnating agent on surfaces of the fabrics and then soaking with polytetrafluoroethylene; drying, cold-pressing andsintering; then, coating epoxy resin on two sides for curing and binding to obtain an E glass fiber radome with a surface film layer. The polytetrafluoroethylene has characteristics of high and temperature resistance, corrosion resistance, weather resistance, ablation resistance and dielectric properties superior to various other matrix materials, is matched with epoxy resin highly matched with the polytetrafluoroethylene as a binder, also has excellent dielectric properties, and enhances wave permeability of the radome; the surface film-containing radome for protecting the radar receiver prepared in the invention does not hinder permeability of electromagnetic waves, improves mechanical properties and chemical resistance of the glass fiber radome, and has good molding process.

Description

technical field [0001] The invention relates to the technical field of radar, in particular to a preparation method of a radome containing a surface film for protecting a radar signal receiver. Background technique [0002] With the development of modern high technology, radar is widely used in aircraft, missiles, navigation and other fields. In order to prevent the radar receiver from being interfered or destroyed, it is necessary to install a radome outside the radar receiver to prevent the external environment from affecting the radar receiver. The impact and interference of the working state of the radar, thereby reducing the power to drive the antenna, improving its working reliability, and ensuring that the radar receiver works around the clock. Therefore, the existence of the radome can prolong the service life of the radar receiver, and its performance directly affects the function of the radar system. It can be said that the radome is as important as the radar recei...

AI Technical Summary

Problems solved by technology

However, in reality, the occasions where the radome is used often have higher requirements for its tensile strength, and the single-layer glass fiber is far from meeting the demand, but the weaving of double-layer or multi-layer glass fiber fabrics is difficult and costly. The degree of fiber damage is large, and the parallelism between the fiber and the fabric surface is poor, which requires multi-layer glass fiber radome to protect the surface film to improve the mechanical strength of the radome, and at the same time, it will not hinder the transmission of electromagnetic waves.