Characterization, properties and mechanism of composite synthesized Eucommia ulmoides rubber and epoxy resin for electromagnetic interference shielding application

电磁屏蔽 复合材料 电介质 材料科学 环氧树脂 天然橡胶 复合数 光电子学
作者
Guo-Kai Zhao,Er-Liang Cui,Shuangyu-Zhuo Wang,Feizhou Li,Ming-Qiang Zhu
出处
期刊:Industrial Crops and Products [Elsevier BV]
卷期号:208: 117802-117802 被引量:1
标识
DOI:10.1016/j.indcrop.2023.117802
摘要

Synthesis of electromagnetic interference (EMI) shielding composites is the main strategy to solve the pollution of electromagnetic radiation. Herein, Mn0.6Zn0.4Fe2O4 (MZF) and carbon black (CB) were added into the emulsion made of Eucommia ulmoides rubber (EUR) and epoxy resin (EP) to prepare the MZF/CB/PEUR(EP@EUR) composites. The uniform distribution of CB created a conductive network that promoted abundant dipole polarization and conduction losses. In addition, the loading of the MZF imparted shielding mechanism of natural resonance and enhancement of conducting network for MZF/CB/PEUR composites that can optimize the complex dielectric constant, ulteriorly resulting in a high-level resonance peak (∼80.2 dB) in the 8.2–12.4 GHz frequency range. Based on the above series of filler loading experiments, the optimal loading concentration of CB (5%) and MZF (25%) was obtained. Finally, the excellent corrosion resistance of acid/alkali environments of MZF/CB/PEUR composites were further investigated. These results will provide a point of penetration for the development, application and mechanism research of EUR as a matrix for environment-friendly dielectric-magnetic EMI shielding composites.
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