Preparation method of epoxy resin-based electromagnetic shielding material

Abstract

The invention discloses a preparation method of an epoxy resin-based electromagnetic shielding material, and belongs to the technical field of composite macromolecule materials. In the preparation method, epoxy resin and adipic acid are used as raw materials to produce a waterborne epoxy resin under the action of a catalyst, and then the waterborne epoxy resin, water, n-hexane and polyethylene imine are stirred and mixed, and carbon dioxide is continuously introduced in the mixing process, so that a self-made micro-emulsion is prepared, then a reducing agent is added after the self-made micro-emulsion and a copper salt solution are stirred and mixed, and vacuum concentration is performed after a reaction with heating and stirring, so that a concentrated solution is obtained; and nanometeriron oxide and a gelatin dispersion solution are mixed, a carbonized material is obtained through spray drying and high temperature carbonization, then the carbonized material is used to adsorb the nanometer iron powder and then mixed with cyclopentadiene, and then a self-made filler is made by a reaction under an inert gas protection state, and finally the concentrated solution, the self-made filler and a curing agent are stirred and mixed, so that the epoxy resin-based electromagnetic shielding material is obtained.

Description

technical field [0001] The invention discloses a preparation method of an epoxy resin-based electromagnetic shielding material, which belongs to the technical field of composite polymer materials. Background technique [0002] Communication equipment is widely used, and these electronic and communication equipment are not only very sensitive to surrounding electromagnetic interference, but also generate electromagnetic interference to the surrounding environment, affecting the growth and health of other equipment and even animals and plants. Therefore, electromagnetic radiation has become another major public hazard after solid waste pollution, air pollution, water pollution and noise pollution. At present, the main way to eliminate the hazards of electromagnetic radiation is to use electromagnetic shielding materials to shield it. Epoxy resin (EP) is widely used because of its unique physical and chemical properties, such as high cohesive strength, good mechanical strength...

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is: in the process of preparation and use of traditional epoxy resin-based electromagnetic shielding materials, the interfacial compatibility between the resin matrix and the filler is not good, and a single added filler cannot