Positive temperature coefficient effect in multiwalled carbon nanotube/high-density polyethylene composites

被引：144
作者：
He, XJ
Du, JH
Ying, Z
Cheng, HM
He, XJ
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
[2] Shenyang Inst Chem Technol, Shenyang Econ Dev Zone, Shenyang 110142, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2005年 / 86卷 / 06期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.1863452
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Muldwalled carbon nanotube (MWNT)-filled high-density polyethylene (HDPE) composites were prepared by a solution-precipitation process, and the temperature dependence of electrical conductivity of the MWNT/HDPE composites was studied. An obvious positive temperature coefficient (PTC) effect was found in the MWNT/HDPE composites with a relatively low MWNT concentration. Compared with that of carbon black (CB)/HDPE composite, the negative temperature coefficient (NTC) effect of the MWNT/HDPE composite at temperature above the melting temperature of HDPE was much less obvious and could be further eliminated after 80 kGy gamma-ray irradiation. The mechanism of the PTC and NTC effects in MWNT/HDPE composites was discussed. (C) 2005 American Institute of Physics.
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页码：1 / 3
页数：3
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