High electrical conductivity and anisotropy of aligned carbon nanotube nanocomposites reinforced by silicon carbonitride

被引：38
|
作者：
Yang, Jinshan [1 ]
Downes, Rebekah [2 ]
Schrand, Amanda [3 ]
Park, Jin Gyu [2 ]
Liang, Richard [2 ]
Xu, Chengying [1 ]
机构：
[1] Florida State Univ, Dept Mech Engn, Tallahassee, FL 32310 USA
[2] Florida State Univ, Dept Ind & Mfg Engn, Tallahassee, FL 32310 USA
[3] US Air Force, Res Lab, Munit Directorate, Fuzes Branch, Eglin AFB, FL 32542 USA
来源：
SCRIPTA MATERIALIA | 2016年 / 124卷
关键词：
Carbon nanotubes; Ceramic matrix composites; Electrical properties; Scanning electron microscopy; Alignment; COMPOSITES; PERCOLATION; GRAPHENE;
D O I：
10.1016/j.scriptamat.2016.06.023
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Aligned carbon nanotube (CNT) sheets reinforced with silicon carbonitride were prepared by the infiltration and pyrolysis of liquid polysilazane into mechanically stretched CNTs. The resultant nanocomposites contained a high volume fraction of CNTs (60 vol%), and due to alignment, reached an electrical conductivity of up to 22 x 10(5) S m(-1). The electrical conductivity was anisotropic based upon the CNT alignment and changed from 3.3 to 9.2 after the pyrolysis process. The high electrical conductivity of the nanocomposites contributes to their potential application in electromagnetic interference shielding. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：21 / 25
页数：5
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