Electromagnetic wave absorptive specific composite material

Abstract

The specific composite electromagnetic wave absorbing material consists of acetylene carbon powder and carbonyl iron powder in the weight ratio of 1.2-9 as functional material and mixed silicon rubber in weight of 3 / 7-7 / 3 that of acetylene carbon powder and carbonyl iron powder, and is prepared through mixing, high temperature sulfurizing and making into sheet or on shape. It is used in shield electromagnetic wave of 0.1 MHz-30 GHz and electromagnetic wave attenuation of 5-50 dB when the sheet has thickness of 0.2-50 mm.

Description

technical field [0001] The invention relates to an emerging material for protecting electromagnetic radiation pollution, which can purify and establish healthy electromagnetic wave time and space, and especially protect human body and electrical equipment from harm and interference. Background technique [0002] At present, in terms of electromagnetic wave protection, electromagnetic wave reflective materials are mostly used. Although this method solves the protective effect on certain objects, it will inevitably cause secondary pollution of electromagnetic waves. Contents of the invention [0003] In order to overcome the secondary pollution caused by the existing materials for shielding electromagnetic waves, the invention provides a composite material for absorbing electromagnetic waves. The material can absorb electromagnetic waves, has no reflection, no secondary pollution, and has a wide absorption frequency band, strong attenuation, and is easy to use. [0004] The...

AI Technical Summary

Problems solved by technology

[0002] At present, in terms of electromagnetic wave protection, electromagnetic wave reflective materials are mostly used. Although this method solves the protective effect on certain objects, it will inevitably cause secondary pollution of electromagnetic waves.