期刊
JOURNAL OF MATERIALS SCIENCE
卷 50, 期 23, 页码 7583-7590出版社
SPRINGER
DOI: 10.1007/s10853-015-9314-4
关键词
-
资金
- National Natural Science Foundation of China [51172184]
The multi-wall carbon nanotube-reinforced carbon foams were prepared via foaming, carbonization, and graphitization process using pretreatment pitches as matrix precursor and modified multi-wall carbon nanotube as additive. The effects of modified multi-wall carbon nanotube additive amount on the microstructure, mechanical strength, thermal conductivity, and electrical conductivity of carbon foams were investigated by X-ray diffraction, scanning electronic microscopy, universal testing machine, laser thermal conductivity tester, and four-probe resistance meter, respectively. It was found that the introduction of modified multi-wall carbon nanotube had a significant effect on the microstructure of carbon foams. The compressive strength and electrical conductivity of carbon foams increased with the increase of modified multi-wall carbon nanotube additive amount, the maximum were 11.72 MPa and 28.89 x 10(3) S/m, respectively. However, the thermal conductivity of carbon foams increased firstly with increasing modified multi-wall carbon nanotube additive amount up to 2 wt%, and then decreased.
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