3D打印制备碳纳米管/环氧树脂电磁屏蔽复合材料  

3D-printed carbon nanotubes/epoxy composites for efficient electromagnetic interference shielding

作　　者：王艳 范泽文[1] 赵建 贾利川 徐玲 鄢定祥[2] 王胜法[3] WANG Yan;FAN Zewen;ZHAO Jian;JIA Lichuan;XU Ling;YAN Dingxiang;WANG Shengfa(School of Textile and Material Engineering,Dalian Polytechnic University,Dalian 116034,China;State Key Laboratory of Polymer Materials Engineering,College of Polymer Science and Engineering,Sichuan University,Chengdu 610065,China;International School of Information and Software Engineering,Dalian University of Technology,Dalian 116620,China)

机构地区：[1]大连工业大学纺织与材料工程学院,大连116034 [2]四川大学高分子科学与工程学院高分子材料工程国家重点实验室,成都610065 [3]大连理工大学国际信息与软件学院,大连116620

出　　处：《复合材料学报》2019年第1期1-6,共6页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(51503023;61772104);辽宁省教育厅高校科研基金(2016J022);辽宁省自然科学基金重点项目(20170520305);高分子材料工程国家重点实验室开放课题(sklpme2014-4-28)

摘　　要：采用3D打印技术制备具有连续通孔的环氧树脂基体,利用浸渍工艺将碳纳米管(CNTs)附着于环氧树脂基体孔壁,获得具有优异电性能和电磁屏蔽功能的CNTs/环氧树脂复合材料。研究结果表明,CNTs含量仅为2.86vol%时,CNTs/环氧树脂复合材料电导率高达35S/m,总电磁屏蔽效能高达39.2dB(厚度为2.0mm)。研究表明,CNTs/环氧树脂复合材料对进入其内部电磁波的吸收占总屏蔽效能的98%,表现出吸收屏蔽为主导的电磁屏蔽机制。CNTs/环氧树脂复合材料的弯曲强度和弯曲模量相比环氧树脂基体也有一定的提高。该研究为具有优异电磁屏蔽性能的高分子基复合材料制备提供了新思路和方法。The carbon nanotubes(CNTs)/epoxy composites were fabricated via 3D-printing technology and dip coating method.Superior shielding effectiveness of 39.2 dB and conductivity of 35 S/m(2 mm of sample thickness)were achieved with only 2.86 vol% CNTs loading in CNTs/epoxy composites.The absorption electromagnetic interference shielding effectiveness accounts for 98% of the total electromagnetic interference shielding effectiveness,confirming that absorption is the primary shielding mechanism rather than reflection in CNTs/epoxy composites,certifying the proposed model.It is worth noting that the flexural properties of CNTs/epoxy composites are better than those of the original 3D-printed epoxy.The research provides creative new ideas and methods for the preparation of polymer matrix composites with excellent electromagnetic shielding performance.

关 键 词：碳纳米管(CNTs) 通孔环氧树脂 3D打印 电磁屏蔽 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]