Radiation-proof shading material and preparing method thereof

Abstract

The component percentage of the anti-radiation, shielding material is Pb 2-10%, Ba 1-5%, TiO2 5-15%, TiB2 1-10%, the rest is aluminum (Al) Under the smelting temperature, the Al is melt down. Then add the anti-radiation material of Pb, Ba, TiO2 and TiB2, the distribution of the material can be controlled by utilizing the magnetic field and controlling the cooling speed. Thus the grading structure is formed. The material is applied to protect the electrnic component of the spacecraft from outer-sphere radiation damage.

Description

technical field [0001] The invention relates to a composite material and a preparation method thereof, in particular to an anti-radiation shielding material and a preparation method thereof. Used in the field of composite material preparation. Background technique [0002] The working environment of spacecraft such as missiles, satellites, airplanes and electronic devices such as warships is full of various high-energy charged particles and electromagnetic radiation of various bands, such as high-energy protons, electrons, neutrons, ions and radio waves, microwaves, x-rays, Gamma rays, etc., will cause serious radiation damage and electromagnetic interference to electronic devices, and are an important cause of spacecraft failure and failure. For example, high-energy charged particles make semiconductor devices SiO 2 The increase of electron-hole pairs in the insulating layer leads to the threshold voltage shift of MOS transistors and the decrease of the gain of bipolar tr...

AI Technical Summary

Problems solved by technology

The process is complex and the pollution is serious. Although the prepared composite materials have a certain shielding effect on 100-2000MHz and 8-12GHz X-rays, their mechanical properties are not high, and because these materials are unstable under the action of rays, Cross-linking occurs, aging phenomenon occurs, and it is not conducive to environmental protection, so it is difficult to apply to the use environment of spacecraft and the protection of electronic instruments

Due to its special use environment, aerospace instruments require the materials used to have high mechanical properties, high temperature and low temperature resistance, and anti-aging capabilities. Therefore, the above materials are not suitable for aerospace instruments.