Piezoresistive materials from directed shear-induced assembly of graphite nanosheets in polyethylene

被引：146

作者：

Lu, JR ^{[1
]}

Weng, WG ^{[1
]}

Chen, XF ^{[1
]}

Wu, DJ ^{[1
]}

Wu, CL ^{[1
]}

Chen, GH ^{[1
]}

机构：

[1] Huaqiao Univ, Dept Mat Sci & Engn, Quanzhou 362021, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2005年 / 15卷 / 08期

关键词：

D O I：

10.1002/adfm.200400298

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A three-dimensional conductive nanocomposite with an ordered conductive network and low percolation threshold has been successfully prepared by blending graphite nanosheets (GNs) with polyethylene on a two-roll mill. The conductive nanosheets orient intensively in the composite, leading to highly anisotropic properties. The nanocomposite with the fraction of conductive nanosheets closest to the percolation threshold possesses a sharp positive pressure coefficient of resistivity, in which the abrupt transition can be attributed to compressive-stress-induced deformation of the conductive network. Such piezoresistive effects depend strongly on filler morphology, filler spatial arrangement, and filler concentration.

引用

页码：1358 / 1363

页数：6

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