具有沉积结构环氧树脂电磁屏蔽材料的制备及表征  

Preparation and Characterization of the Epoxy-Based Electromagnetic Interference Shielding Materials with Deposited Structure

作　　者：廉青松 李言 徐伟杰 陈宏峰 赵贵哲 刘亚青 程珏[3] Qingsong Lian;Yan Li;Weijie Xu;Hongfeng Chen;Guizhe Zhao;Yaqing Liu;Jue Cheng(College of Materials Science and Engineering,Key Laboratory of Functional Nanocomposites of Shanxi Province,North University of China,Taiyuan 030051,China;Department of Materials Application Research,AVIC Manufacturing Technology Institute,Beijing 100024,China;College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]中北大学材料科学与工程学院纳米功能复合材料山西省重点实验室,山西太原030051 [2]中国航空制造技术研究院材料应用研究部,北京100024 [3]北京化工大学材料科学与工程学院,北京100029

出　　处：《高分子材料科学与工程》2022年第2期66-72,共7页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(52003255);山西省自然科学基金资助项目(201901D211261);山西省高等学校科技创新计划(2019L0560)。

摘　　要：文中首先构筑具有三维结构的四针状氧化锌负载银(Ag@T-ZnO)和二维石墨烯纳米片(GNS)的混杂导电网络,随后灌注环氧树脂固化得到具有沉积结构的Ag@T-ZnO/GNS/EP复合材料,系统研究了Ag@T-ZnO和GNS的配比对复合材料屏蔽效能和力学性能的影响。当Ag@T-ZnO和GNS总质量分数为复合材料的20%且二者质量比为9:1时,二者之间的协同作用及独特的沉积导电网络结构赋予了复合材料优异的屏蔽效能和力学性能,在X波段的平均屏蔽效能可以达到83.8 dB,拉伸性能可达到51.6 MPa。为设计制备兼具优异力学性能和屏蔽性能的复合材料提供了新的思路。It is a difficult issue in preparing composite materials with high mechanical properties and excellent electromagnetic interference(EMI)shielding performance.In this paper,the preformed conductive network structure formed by Ag@T-ZnO and graphene nanosheets(GNS)was poured into epoxy resin(EP),and the Ag@T-ZnO/GNS/EP composites with deposited structure can be obtained by the curing process of EP.The influence of the mass ratio of Ag@T-ZnO and GNS on the EMI shielding effectiveness(SE)and mechanical properties of the composites was systematically studied.When the mass ratio of Ag@T-ZnO and GNS is 9:1 and the total filler loading is 20%,the average EMI SE of the composites can reach 83.8 dB due to the deposited structure and the synergy between Ag@T-ZnO and GNS.The tensile properties of the composites can reach 51.6 MPa at the same time.This paper provided a new thought for designing composite materials with high mechanical properties and excellent EMI shielding performance.

关 键 词：力学性能 电磁屏蔽 四针状氧化锌负载银 石墨烯纳米片 环氧树脂 沉积结构 

分 类 号：TB34[一般工业技术—材料科学与工程]