Positive temperature coefficient effect of LMWPE-UHMWPE blends filled with short carbon fibers

被引：122

作者：

Xi, Y ^{[1
]}

Ishikawa, H ^{[1
]}

Bin, YZ ^{[1
]}

Matsuo, M ^{[1
]}

机构：

[1] Nara Womens Univ, Fac Human Life & Environm, Dept Text & Apparel Sci, Nara 6308263, Japan

来源：

CARBON | 2004年 / 42卷 / 8-9期

关键词：

carbon fibers; resins; mixing; electrical properties;

D O I：

10.1016/j.carbon.2004.02.027

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Composites of ultra-high molecular weight polyethylene (UHMWPE), low molecular weight polyethylene (LMWPE) and carbon fibers (CF) were prepared by gelation/crystallization from solution. The maximum intensity of PTC (positive temperature coefficient), the magnitude being ca. 9 orders, was found for a LMWPE/UHMWPE composition of 9/1 containing 23.5 vol% CF, i.e. a much higher amount of the filler than in the percolation threshold (12-15 vol%). The elimination of the NTC (negative temperature coefficient) effect and a good reproducibility were achieved by using UHMWPE as one of the composite components because of its very high viscosity. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：1699 / 1706

页数：8

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