High temperature resistant electromagnetic wave absorbent material film and preparing method

Abstract

A heat resisting electromagnetic wave absorbing material mainly belongs to electromagnetic wave absorbing material technology. The invention includes following components: fluororubber FPM2601: 20-25wt.%, Hexamethylene diamine carbamate: 0.2-0.3wt.%, copper inhibitor No.65: 0.1-0.2wt.%, vulcanizer: 2-4wt.% and electromagnetic wave absorbing agent: 60-70wt.%. The invention has a good temperature stability, consistency and a simple and effective quality control, a high tensile strength and breaking elongation.

Description

technical field [0001] The invention belongs to the technology of electromagnetic wave absorbing materials, in particular to a high temperature resistant electromagnetic wave absorbing film material and a preparation method thereof. Background technique [0002] The widely used electromagnetic wave absorbing materials (hereinafter referred to as wave absorbing materials) mainly include dielectric and magnetic. Dielectric absorbing materials are generally carburized foam absorbing materials, which have significant advantages such as light weight and high absorption rate, but have disadvantages such as thick thickness, narrow frequency band, poor high temperature resistance (generally not exceeding 120°C), and low mechanical strength. . Magnetic wave-absorbing materials are mainly divided into rubber plate and coated wave-absorbing materials, which have the advantages of wide absorption frequency band, thin thickness, high absorption rate, and good mechanical properties, and ...

AI Technical Summary

Problems solved by technology

Since the seeker of the communication system of some equipment re-enters the atmosphere, the antenna array will generate a very high temperature, and ordinary absorbing materials cannot withstand such a high temperature (300 ° C), not only cannot improve the electrical performance, On the contrary, it will endanger the safety of the entire system due to combustion and carbonization, so the development of high-temperature absorbing materials has very important significance and application prospects