Radar wave absorbing paint with hollow microsphere as filling material and preparation method thereof

Abstract

The invention discloses a radar wave absorbing coating with the filler of hollow microsphere, which consists of epoxy-silicone resin 30 to 40wt%, a leveling agent 0.2 to 0.4wt%, a thickening agent 0.2 to 0.4wt%, hollow microsphere plated with metal coating 40 to 55wt%, and solvent being the rest. The radar wave absorbing coating with the hollow microsphere filler has the maximal absorptivity of 20 dB at the electromagnetic wave frequency band of 2 to 18 GHz, and has the frequency width of 5 GHz larger than 10 dB.

Description

A kind of radar wave absorbing coating with hollow microspheres as filler and preparation method thereof technical field The present invention relates to a radar wave-absorbing paint and a preparation method thereof, more particularly, to a radar wave-absorbing paint in which the surface of functionalized hollow microspheres is coated with a metal coating as a filler by using an electroless plating process. Background technique Hollow microsphere is a kind of inorganic powder. Compared with metal powder, it has lower density, high temperature resistance, strong acid and alkali resistance and oxidation resistance. If the surface is modified to achieve surface metallization, it is possible to solve the shortcomings of traditional absorbing materials such as high density, poor high temperature performance, oxidation resistance, and poor acid and alkali resistance. At present, the research on the surface modification of hollow microspheres to prepare lightweight radar absorbin...

AI Technical Summary

Problems solved by technology

If the surface is modified to achieve surface metallization, it is possible to solve the shortcomings of traditional absorbing materials such as high density, poor high temperature performance, oxidation resistance, and poor acid and alkali resistance.