期刊
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
卷 47, 期 10, 页码 994-1003出版社
WILEY
DOI: 10.1002/polb.21705
关键词
carbon nanotubes; composites; high performance polymers; piezoresistance; polyimides
A systematic study of the effect of single wall carbon nanotubes (SWCNTs) on the enhanced piezoresistive sensitivity of polyimide nanocomposites from below to above percolation was accomplished. The maximum piezoresistive stress coefficient (Pi) of 1.52 x 10(-3) MPa-1 was noted at just above the percolation threshold concentration (Phi similar to 0.05 wt %) of SWCNT. This coefficient value exceeds those of metallic piezoresistive materials by two orders of magnitude (4.25 x 10(-5) MPa-1 for aluminum). The high piezoresistive characteristics appear to originate from a change in the intrinsic resistivity of the composite caused by the variation of the tunneling distance between conducting inclusions (SWCNTs) under compression or tension. (C) 2009 Wiley Periodicals, Inc.* J Polym Sci Part B: Polym Phys 47: 994-1003, 2009
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据