高导热碳/碳复合材料的制备

冯志海, 樊桢, 孔清, 余立琼, 徐林

doi:10.3969/j.issn.1007-2861.2013.07.045

上海大学学报(自然科学版) >

2014 , Vol. 20 >Issue 1: 51 - 58

DOI: https://doi.org/10.3969/j.issn.1007-2861.2013.07.045

复合材料

高导热碳/碳复合材料的制备

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航天材料及工艺研究所先进功能复合材料技术重点实验室, 北京 100076

收稿日期: 2013-12-24

网络出版日期: 2014-02-28

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Preparation of High Thermal Conductivity C/C Composite

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Key Laboratory of Advanced Functional Composite Materials, Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China

Received date: 2013-12-24

Online published: 2014-02-28

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摘要

以中间相沥青和中间相沥青基碳纤维为原料, 采用碳布热压法、液相浸渍法制备了二维和三维高导热碳/碳复合材料, 且所制得复合材料的热导率分别高达443和340 W/(m·K). 依据碳/碳复合材料的热导率模型, 分析了不同结构特征参数对材料热导率的影响. 结果表明, 基体碳热导率、孔隙率以及界面相厚度均会在一定程度上影响材料的导热性能.

关键词： 高导热碳/碳复合材料; 中间相沥青; 中间相沥青基碳纤维

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冯志海, 樊桢, 孔清, 余立琼, 徐林 . 高导热碳/碳复合材料的制备[J]. 上海大学学报(自然科学版), 2014 , 20(1) : 51 -58 . DOI: 10.3969/j.issn.1007-2861.2013.07.045

Abstract

2D high thermal conductivity C/C composite and 3D high thermal conductivity C/C composite were produced through hot pressing and liquid impregnating method, with mesophase pitch-based carbon fiber and mesophase pitch as raw materials. Thermal conductivity as high as 443 W/(m·K) and 340 W/(m·K) was achieved for 2D high thermal conductivity C/C composite and 3D high thermal conductivity C/C composite, respectively. The effects of structure parameters on the thermal conductivity were analyzed according to the analytical thermal model of C/C composites. The results show that thermal conductivity of carbon matrix, porosity and interface have different effects on the thermal conductivity of composites.

Key words： high thermal conductivity C/C composite; mesophase pitch; mesophase pitch-based carbon fiber

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