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

被引：145

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.

引用

页码：1 / 3

页数：3

共 15 条

[1] Preparation, morphology, and microstructure of diameter-controllable vapor-grown carbon nanofibers [J].