Study on piezoresistive properties of silicon rubber composite filled with aligned micron iron powders

被引：0
|
作者：
Liu Z.-W. [1 ]
Zhang B.-W. [1 ]
机构：
[1] School of Rare Earth, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia
来源：
Hangkong Cailiao Xuebao/Journal of Aeronautical Materials | 2011年 / 31卷 / 01期
关键词：
Alignment; Magnetic field treatment; Micron iron powder; Piezoresistivity; Silicone rubber composite;
D O I：
10.3969/j.issn.1005-5053.2011.1.015
中图分类号：
学科分类号：
摘要：
Silicon rubber filled with aligned iron powders through the process of magnetic field assisted curing was prepared. The resistance dependence upon filler content and pressure was tested. The results show the composite samples of resistance of more than 1010Ω exhibit negative piezoresistivity, while those of resistance of less than 1010Ω exhibit positive piezoresistivity; the silicon rubber filled with 10%~50% iron powders in weight has a sharp increase in resistance up to 3~5 orders of magnitude close to 0.2 MPa, but the system containing 50% filler obtained under a 0.2T magnetic field exhibits a linear positive piezoresistivity. The underlying mechanism is correlated with the diversity in configuration of aligned microstructure in the rubber induced by magnetic field.
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页码：81 / 86
页数：5
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