A CIP@MXene composite microwave absorber with both electrical and magnetic losses and its preparation method

Abstract

This invention belongs to the field of electromagnetic absorbing materials, specifically providing a CIP@MXene composite microwave absorbing agent with both electrical and magnetic losses, and its preparation method, to further improve the microwave absorption performance of structured composite microwave absorbing agents, especially high-frequency microwave absorption performance. This invention combines modified CIP microspheres with positively charged surfaces and negatively charged MXene nanosheets. The two nanosheets electrostatically self-assemble to form a core-shell structure, effectively improving the microwave absorption performance of the absorbing agent. Testing shows that the CIP@MXene composite microwave absorbing agent provided by this invention has a reflection loss below -10dB in the 75GHz–110GHz frequency band, with a minimum reflection loss reaching -30dB. The reflection loss in the 0.2THz–1.2THz frequency band is also below -10dB, indicating that the CIP@MXene composite microwave absorbing agent provided by this invention has excellent microwave absorption performance, especially high-frequency microwave absorption performance. Simultaneously, this invention provides a preparation method for the CIP@MXene composite microwave absorbing agent, which is simple in process, low in cost, and conducive to industrial production.

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