文献类型：期刊文献

英文题名：Preparation of carbon nanotube/epoxy composite films with high tensile strength and electrical conductivity by impregnation under pressure

作者：Chen, Heng[1];Chen, Yun[1];Zhan, Hang[1];Wu, Guang[1];Xu, Jian Ming[1,2];Wang, Jian Nong[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Shanghai Inst Space Power Sources, 2965 Dongchuan Rd, Shanghai 200245, Peoples R China

年份：2019

卷号：13

期号：2

起止页码：165

外文期刊名：FRONTIERS OF MATERIALS SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000473181100006)】；

基金：This research was supported by the National Key R&D Program of China (2018YFA0208404), the National Natural Science Foundation of China (U1362104), and the Innovation Program of Shanghai Municipal Education Commission.

语种：英文

外文关键词：carbon nanotube; alignment; resin matrix composite; tensile strength; impregnation under pressure

摘要：Based on the production of a carbon nanotube (CNT) assembly, a new technique is developed for preparing CNT/epoxy (EP) composite films with high tensile strength and electrical conductivity. CNTs are synthesized by floating catalyst spray pyrolysis. After self-assembling into a hollow cylindrical assembly, CNTs are drawn and wound on a rotating drum to form a uniform CNT film. EP resin solutions of different concentrations are used to fill into the pores within the film under different pressures and form composite films after hot-press curing. The permeability of the EP resin and thus the interfacial bonding between the CNT and the EP resin are studied by varying the concentration of the EP resin solution and the pressure used for impregnation. Under optimal preparation conditions, the composite film contains CNTs of a high content of 59 wt.%, and shows a high tensile strength of 1.4 GPa and a high electrical conductivity of 1.4x10(5) S.m(-1), 159% and 309% higher than those of the neat CNT film, respectively.