Effect of aspect ratio of multiwall carbon nanotubes on resistance-pressure sensitivity of rubber nanocomposites

被引：40

作者：

Jiang, Mei-Juan

Dang, Zhi-Min ^{[1
]}

Xu, Hai-Ping

Yao, Sheng-Hong

Bai, Jinbo

机构：

[1] Beijing Inst Chem Technol, Key Lab Minist Educ Nanomat, Beijing 100029, Peoples R China

[2] Beijing Inst Chem Technol, Key Lab Beijing City Preparat & Possessing Novel, Beijing 100029, Peoples R China

[3] Ecole Cent Paris, Lab MSSMAT, CNR, UMR 8579, F-92295 Chatenay Malabry, France

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 07期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2772671

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

To explore the effect of aspect ratio (AR) of nanotubes on conductivity and resistance-pressure sensitivity, four kinds of multiwall carbon nanotubes (MWNT) with different aspect ratios (AR=50, 75, 333, and 500) were dispersed into methylvinyl silicone rubber (VMQ) to fabricate the MWNT/VMQ nanocomposites. Results show that the composites with low concentration nanotubes at low AR value show great resistance-pressure sensitivity. High AR is not beneficial for the improvement of conductivity, and at the same concentration of MWNT, the composites with high AR tubes display large resistance-pressure sensitivity. The sensitivity is dependent on the quantity of conductive channels formed in the composites. (C) 2007 American Institute of Physics.

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页数：3

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