化工进展 ›› 2018, Vol. 37 ›› Issue (02): 664-672.DOI: 10.16085/j.issn.1000-6613.2017-0527

• 材料科学与技术 • 上一篇    下一篇

功能化碳纳米管/环氧树脂多孔复合材料制备及电磁屏蔽性能

陈建军1,2, 黄月文1,3,4, 梁彩珍1,2, 王斌1,3,4   

  1. 1 中国科学院广州化学研究所, 广东 广州 510650;
    2 中国科学院大学, 北京 100049;
    3 广东省陶瓷产业用精细化学品工程技术研究中心, 广东 广州 510650;
    4 中国科学院佛山功能高分子材料中心, 广东 佛山 528000
  • 收稿日期:2017-03-28 修回日期:2017-06-21 出版日期:2018-02-05 发布日期:2018-02-05
  • 通讯作者: 王斌,研究员,研究方向为高分子材料。
  • 作者简介:陈建军(1991-),男,硕士研究生。
  • 基金资助:
    广州市科技计划项目(201510010183)。

Fabrication and electromagnetic interference (EMI) shielding properties of porous functional multi-walled carbon nanotubes/epoxy composites

CHEN Jianjun1,2, HUANG Yuewen1,3,4, LIANG Caizhen1,2, WANG Bin1,3,4   

  1. 1 Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, Guangdong, China;
    2 University of Chinese Academy of Science, Beijing 100049, China;
    3 Guangdong Provincial Engineering & Technology Research Center for Fine Chemicals of Ceramic Industry, Guangzhou 510650, Guangdong, China;
    4 Foshan Centre for Functional Polymer Materials and Fine Chemicals, Chinese Academy of Sciences, Foshan 528000, Guangdong, China
  • Received:2017-03-28 Revised:2017-06-21 Online:2018-02-05 Published:2018-02-05

摘要: 以马来酸酐(MA)为功能性单体,通过自由基反应制备了马来酸酐功能化的多壁碳纳米管(MA-MWCNT);以MA-MWCNT、环氧树脂、蓖麻油酸改性的四乙烯五胺固化剂、釉粉、水为原料,通过悬浮乳液聚合法制备了功能化碳纳米管/环氧树脂多孔复合材料。采用拉曼光谱、X射线衍射、红外光谱、X射线光电子能谱对功能化的碳纳米管进行了表征和测试。采用扫描电镜(SEM)、表面电阻测量仪、矢量网络分析仪对复合材料的表面形貌、电导率和电磁屏蔽性能进行了测试。结果表明:马来酸酐功能化单体的引入能够很好地改善碳纳米管的分散性能及材料的电磁屏蔽性能;随着碳纳米管含量的增多,复合材料的电导率增大,电磁屏蔽效能峰值增大,材料的电磁屏蔽性能增强;加入功能化的碳纳米管比加入未功能化碳纳米管的电磁屏蔽性能高,多孔复合材料比无孔复合材料的电磁屏蔽性能高。当加入功能化的碳纳米管的量为3%时,制备得到的多孔材料电磁屏蔽性能最佳,其电磁屏蔽性能峰值达到31.1dB。

关键词: 电子材料, 复合材料, 聚合物, 制备, 自由基

Abstract: Free radical reaction was firstly performed to prepare maleic anhydride(MA)functionalized MWCNT(MA-MWCNT) via grafting maleic anhydride(MA) onto the side walls of multi-walled carbon nanotubes(MWCNT). MA-MWCNT, epoxy, waterborne curing agents prepared from ricinoleic acid(RA) and tetraethylenepentamine(TEPA), glaze powder and water were then used to fabricate porous functional multi-wall carbon nanotube/epoxy composites through epoxy-water-filler suspended emulsion polymerization. Finally, Raman spectra, XRD, FTIR and XPS were used to characterize the functional multi-wall carbon nanotube. The morphologies of the composites, the electrical conductivity and electromagnetic interference(EMI) effectiveness were measured by scanning electron microscopy (SEM), surface resistance measuring instrument and vector network analyzer, respectively. The results revealed that the dispersing performance of MWCNT and EMI effectiveness of the MWCNT/epoxy composites were improved after the functionalization of MWCNT with maleic anhydride. The electrical conductivity and electromagnetic interference(EMI) effectiveness of the composites increased as the increase of MWCNT content. Higher EMI effectiveness value will be obtained when functional MWCNT were added compared with the pristine MWCNT. Besides, the porous composites also have better EMI properties than the solid composites. When the content of functional MWCNT was 3%, the porous composites have the best EMI properties and the highest EMI effectiveness could reach 31.1dB.

Key words: electronic material, composite material, polymers, preparation, radical

中图分类号: 

京ICP备12046843号-2;京公网安备 11010102001994号
版权所有 © 《化工进展》编辑部
地址:北京市东城区青年湖南街13号 邮编:100011
电子信箱:hgjz@cip.com.cn
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn