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Preparation of carbon nanotube/epoxy composite films with high tensile strength and electrical conductivity by impregnation under pressure 被引量:1
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作者 Heng CHEN Yun CHEN +3 位作者 Hang ZHAN Guang WU jian Ming XU jian nong wang 《Frontiers of Materials Science》 SCIE CSCD 2019年第2期165-173,共9页
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 fl... 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. 展开更多
关键词 carbon NANOTUBE alignment RESIN matrix composite TENSILE strength IMPREGNATION under pressure
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Preparation and thermal properties of layered porous carbon nanotube/epoxy resin composite films
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作者 Jun ZHAO Hang ZHAN +1 位作者 Hai Tao CHEN jian nong wang 《Frontiers of Materials Science》 SCIE CSCD 2019年第4期382-388,共7页
A floating-catalyst spray pyrolysis method was used to synthesize carbon nanotube(CNT)thin films.With the use of ammonium chloride as a pore-former and epoxy resin(EP)as an adhesive,CNT/EP composite films with a porou... A floating-catalyst spray pyrolysis method was used to synthesize carbon nanotube(CNT)thin films.With the use of ammonium chloride as a pore-former and epoxy resin(EP)as an adhesive,CNT/EP composite films with a porous structure were prepared through the post-heat treatment.These films have excellent thermal insulation(0.029–0.048 W·m^−1·K^−1)at the thickness direction as well as a good thermal conductivity(40–60 Wm^−1·K^−1)in the film plane.This study provides a new film material for thermal control systems that demand a good thermal conductivity in the plane but outstanding thermal insulation at the thickness direction. 展开更多
关键词 carbon nanotube composite film layered porous structure thermal insulation thermal conductivity pore-former
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