Preparation and thermal properties of layered porous carbon nanotube/epoxy resin composite films

doi:10.1007/s11706-019-0478-8

Front. Mater. Sci.

2019, Vol. 13

Issue (4) : 382-388 https://doi.org/10.1007/s11706-019-0478-8

RESEARCH ARTICLE

Preparation and thermal properties of layered porous carbon nanotube/epoxy resin composite films

Jun ZHAO, Hang ZHAN, Hai Tao CHEN, Jian Nong WANG(

)

School of Mechanical and Power Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China

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Abstract

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 W·m⁻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.

Keywords carbon nanotube composite film layered porous structure thermal insulation thermal conductivity pore-former

Corresponding Author(s): Jian Nong WANG

Online First Date: 01 November 2019 Issue Date: 04 December 2019

Cite this article:

Jun ZHAO,Hang ZHAN,Hai Tao CHEN, et al. Preparation and thermal properties of layered porous carbon nanotube/epoxy resin composite films[J]. Front. Mater. Sci., 2019, 13(4): 382-388.

URL:

https://academic.hep.com.cn/foms/EN/10.1007/s11706-019-0478-8
https://academic.hep.com.cn/foms/EN/Y2019/V13/I4/382

Fig.1 (a) Schematic illustration of the experimental set-up for the preparation of the CNT/EP/AC composite film. (b) Schematic illustration of the formation of a porous structure in the composite film.

Fig.2 (a) Optical image of a hollow cylindrical CNT assembly. (b) Optical image of a CNT film. (c) TEM image of CNTs in bundles. (d) HRTEM image of double- and few-walled CNTs.

Fig.3 (a) TG curves of the neat CNT film and the composite films prepared at different EP concentrations. (b) EP contents in composite films prepared from different EP solutions. (c) SEM image of the cross-sectional morphology of the CNT/EP composite film with 17.3 wt.% EP at low magnification. (d) SEM image of the cross-sectional morphology of this film at high magnification. Red arrows indicate regions where CNT films are bound by EP.

Fig.4 (a) Nitrogen desorption (D)?adsorption (A) curves of neat CNT film and composite film with 17.3 wt.% EP. (b) Pore size distribution of the composite film with 17.3 wt.% EP. (c) SHC curves of CNT film and composite films with different EP contents. (d) A curve of the TCC vs. the EP content for CNT/EP composite films.

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