Effect of frozen conditions on dispersion morphologies of carbon nanotubes and electrical conductivity of carbon fiber/epoxy composites

被引：16

作者：

Dong, Liubing ^{[1
,2
,3
]}

Li, Yang ^{[4
]}

Wang, Lei ^{[1
]}

Xu, Shanshan ^{[1
]}

Hou, Feng ^{[1
]}

机构：

[1] Tianjin Univ, Key Lab Adv Ceram & Machining Technol, Minist Educ, Tianjin 300072, Peoples R China

[2] Tsinghua Univ, Grad Sch Shenzhen, Shenzhen 518055, Peoples R China

[3] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China

[4] Xiamen Univ, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China

来源：

MATERIALS LETTERS | 2014年 / 130卷

关键词：

Carbon nanotubes; Composite materials; Electrical properties; Microstructure; ELECTROPHORETIC DEPOSITION; ARCHITECTURES;

D O I：

10.1016/j.matlet.2014.05.116

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Carbon nanotubes (CNTs) were introduced into three-dimensional carbon fiber fabric/epoxy composites with assistance of freeze-drying technique. Different frozen conditions, including slow-freezing, quick-freezing and unidirectional freezing, were utilized to affect CNT dispersion morphologies in fiber/CNTs preforms and composites. Electrical conductivity of composites was measured. The results demonstrated that: (1) frozen conditions had an obvious effect on dispersion morphologies of CNTs in preforms; (2) quick-freezing and unidirectional freezing were beneficial for CNTs to disperse in preforms and improve electrical conductivity of composites, compared to slow-freezing; (3) application of unidirectional freezing made the arrangement of CNTs possess certain orientation and, as consequence, electrical conductivity along freezing direction of composites was enhanced significantly. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：180 / 183

页数：4

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