Structure and function integrated electromagnetic shielding material and preparation method thereof

Abstract

The invention relates to a structure and function integrated electromagnetic shielding material and a preparation method thereof. The preparation method comprises the steps of carbon fiber surface treatment, carbon fiber nickel electroplating, nickel-plated carbon fiber three-dimensional weaving and polyether-ether-ketone resin pouring. According to the preparation method, after nickel metal is electroplated on carbon fibers, three-dimensional four-direction weaving is carried out, then a woven body of the nickel-plated carbon fibers and polyether-ether-ketone resin are compounded, and therefore the composite material of the nickel-plated carbon fibers and the polyether-ether-ketone resin is prepared; due to the good conductivity of the carbon fiber woven body and the nickel-plated layer and the ferromagnetism of the nickel-plated layer, the woven composite material has good electromagnetic shielding performance, meanwhile, the preparation method has the advantages that the preparation process is simple and easy to operate, and the prepared composite material has good creep resistance, damp heat resistance, aging resistance, abrasion resistance and the like.

Description

A kind of electromagnetic shielding material with integrated structure and function and preparation method thereof technical field The present invention relates to the field of electromagnetic shielding material preparation, be specifically related to a kind of electromagnetic shielding material integrating structure and function materials and methods for their preparation. Background technique The damage of electromagnetic radiation to human body is paid more and more attention, and accidents caused by electromagnetic interference are frequently reported. Radiation can also cause leakage of confidential information, endangering personal privacy and national security. In addition, the battlefield electricity of modern information warfare The magnetic environment is becoming increasingly complex and harsh. The higher the integration of information equipment, the more electromagnetic sensitivity and electromagnetic vulnerability of the circuit system. more serious. ...

AI Technical Summary

Problems solved by technology

However, carbon fibers, despite their good electrical conductivity, lack ferromagnetism, which limits their use in high-end electromagnetic shielding composites

[0005] Surface modification of carbon fiber is an effective way to improve the electromagnetic shielding performance of carbon fiber composite materials. Electroplating metal method is often used for surface modification of carbon fiber. Although the conductivity of silver and aluminum is much higher than that of nickel, nickel metal is commonly used in electroplating. It is because of the conductivity and ferromagnetism of nickel, the conductivity of nickel produces eddy current loss to electromagnetic waves, and the ferromagnetism produces magnetic loss to electromagnetic waves

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