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Received: 2022-08-28

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Haiguang ZHANG


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Journal of Zhejiang University SCIENCE A 2023 Vol.24 No.2 P.162-172


Preparation and 3D printing of high-thermal-conductivity continuous mesophase-pitch-based carbon fiber/epoxy composites

Author(s):  Haiguang ZHANG, Kunlong ZHAO, Qingxi HU, Jinhe WANG

Affiliation(s):  Rapid Manufacturing Engineering Center, School of Mechatronical Engineering and Automation, Shanghai University, Shanghai 200444, China; more

Corresponding email(s):   haiguang_zhang@i.shu.edu.cn, wangjinhe@shu.edu.cn

Key Words:  Thermal conductivity, 3D printing, Continuous mesophase-pitch-based carbon fiber (CMPCF), Thermoplastic polyurethane (TPU), Epoxy composite filament

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Haiguang ZHANG, Kunlong ZHAO, Qingxi HU, Jinhe WANG. Preparation and 3D printing of high-thermal-conductivity continuous mesophase-pitch-based carbon fiber/epoxy composites[J]. Journal of Zhejiang University Science A, 2023, 24(2): 162-172.

@article{title="Preparation and 3D printing of high-thermal-conductivity continuous mesophase-pitch-based carbon fiber/epoxy composites",
author="Haiguang ZHANG, Kunlong ZHAO, Qingxi HU, Jinhe WANG",
journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Preparation and 3D printing of high-thermal-conductivity continuous mesophase-pitch-based carbon fiber/epoxy composites
%A Haiguang ZHANG
%A Kunlong ZHAO
%A Qingxi HU
%A Jinhe WANG
%J Journal of Zhejiang University SCIENCE A
%V 24
%N 2
%P 162-172
%@ 1673-565X
%D 2023
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A2200413

T1 - Preparation and 3D printing of high-thermal-conductivity continuous mesophase-pitch-based carbon fiber/epoxy composites
A1 - Haiguang ZHANG
A1 - Kunlong ZHAO
A1 - Qingxi HU
A1 - Jinhe WANG
J0 - Journal of Zhejiang University Science A
VL - 24
IS - 2
SP - 162
EP - 172
%@ 1673-565X
Y1 - 2023
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A2200413

To meet the requirements of spacecraft for the thermal conductivity of resins and solve the problem of low thermal conduction efficiency when 3D printing complex parts, we propose a new type of continuous mesophase-pitch-based carbon fiber/thermoplastic polyurethane/epoxy (CMPCF/TPU/epoxy) composite filament and its preparation process in this study. The composite filament is based on the high thermal conductivity of CMPCF, the high elasticity of TPU, and the high-temperature resistance of epoxy. The tensile strength and thermal conductivity of the CMPCF/TPU/epoxy composite filament were tested. The CMPCF/TPU/epoxy composites are formed by 3D printing technology, and the composite filament is laid according to the direction of heat conduction so that the printed part can meet the needs of directional heat conduction. The experimental results show that the thermal conductivity of the printed sample is 40.549 W/(m·K), which is 160 times that of pure epoxy resin (0.254 W/(m·K)). It is also approximately 13 times better than that of polyacrylonitrile carbon fiber/epoxy (PAN-CF/epoxy) composites. This study breaks through the technical bottleneck of poor printability of CMPCF. It provides a new method for achieving directional thermal conductivity printing, which is important for the development of complex high-performance thermal conductivity products.


结论:1.通过对CMPCF进行表面上浆、增韧预处理和预浸处理,成功制备出高导热性能的CMPCF/TPU/epoxy复合长丝;在CMPCF外包裹TPU,解决了CMPCF因脆性而难以打印的问题。2.3D打印使纤维沿导热方向铺设,为制备具有高导热系数的复杂打印件提供了一种新方法。3.导热系数测试表明,当CMPCF体积含量仅为6.6%时,复合材料的导热系数为40.549 W/(m·K),是纯环氧树脂的160倍,是聚丙烯腈基碳纤维(PAN-CF)体积为14.6%时复合材料的13倍,因此CMPCF的加入明显提高了打印件的导热性能。


Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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