Effect of carbon nanotubes on thermal conductivity and mechanical performance of carbon foam derived from mesophase pitch

被引：0

作者：

Lv, Jing ^{[1
]}

Li, Tie-Hu ^{[1
]}

Zhao, Ting-Kai ^{[1
]}

Liu, He-Guang ^{[1
]}

Shi, Ya-Chun ^{[1
]}

Zhao, Xing ^{[1
]}

机构：

[1] School of Material, Northwestern Polytechnical University

来源：

Gongneng Cailiao/Journal of Functional Materials | 2013年 / 44卷 / 10期

关键词：

Carbon foam; Carbon nanotubes; Mechanical properties; Thermal conductivity;

D O I：

10.3969/j.issn.1001-9731.2013.10.020

中图分类号：

学科分类号：

摘要：

Modified carbon nanotubes (m-CNTs) were dispersed uniformly in the mesophase pitch by ultrasonic dispersion. Then carbon foam was prepared through self volatile foaming, carbonization and graphitization using m-CNTs/mesophase pitch compound as a precursor. TEM, SEM analysis methods were employed to investigate the amount of additional m-CNTs on the structure and properties of the carbon foam. The results show that the dispersion of m-CNTs was improved when comparing with CNTs. The average size of carbon foam reduced to some degree when m-CNTs are added, furthermore the number of micro-cracks of the foam decreased significantly. When the proportion of the m-CNTs reaches 5wt%, thermal conductivity and compression strength of carbon foam achieve the highest, 137 W/(m·K) and 12.1 MPa, respectively.

引用

页码：1461 / 1464

页数：3

共 15 条

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