Asymmetric layered pdms electromagnetic shielding material and preparation method thereof

By constructing an asymmetric layered "magnetic-electric-electric" structure for PDMS electromagnetic shielding material, the problems of insufficient shielding efficiency and excessive reflection of existing materials with low filler content are solved, achieving a combination of high-efficiency electromagnetic shielding and low reflection.

CN122640992APending Publication Date: 2026-08-25XIAN UNIV OF TECH
0 Cites 0 Cited by

Patent Information

Application Number
CN202610757885.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-29
Publication Date
2026-08-25

AI Technical Summary

Technical Problem

Existing polymer-based electromagnetic shielding composite materials, with low filler content, cannot simultaneously achieve high electromagnetic shielding effectiveness, low reflection characteristics, and absorption-dominant shielding effect, and their structural designs are also limited.

Method used

An asymmetric layered PDMS electromagnetic shielding material preparation method is adopted. By constructing an asymmetric "magnetic-electrical-electrical" layered structure and combining it with a three-dimensional porous graphene framework, a magnetic loss layer, a conductive loss layer and a highly conductive barrier layer are formed in sequence, thereby optimizing the transmission and dissipation process of electromagnetic waves inside the material.

Benefits of technology

Achieving a balance between high electromagnetic shielding effectiveness and low reflection characteristics with low filler content, the material preparation process is simple and highly operable, with good repeatability and application prospects.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The application discloses a preparation method of an asymmetric layered PDMS electromagnetic shielding material, and specifically comprises the following steps f -Ni, AgNPs@GO powder, AgNPs@GO precursor, AgNWs, f -Ni@GO precursor; through f -Ni@GO precursor and AgNPs@GO precursor to obtain an asymmetric layered aerogel; in combination with AgNWs / PDMS conductive paste, an asymmetric three-layer structure is obtained; vacuum-assisted impregnation of PDMS and thermal curing are performed, and the asymmetric layered PDMS electromagnetic shielding material is obtained. The application further discloses the asymmetric layered PDMS electromagnetic shielding material, and solves the problem that polymer-based electromagnetic shielding composite materials in the prior art are difficult to simultaneously consider high electromagnetic shielding efficiency, low reflection characteristics and absorption-dominant shielding effect under the condition of low filler content.
Need to check novelty before this filing date? Find Prior Art