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High electrical sensitivity of polyurethane carbon nanotube composites to tensile strain
Y. Zeng; P. F. Lin; L. Zhao; J. H. Du; C. Liu
2013
Source PublicationNew Carbon Materials
ISSN1007-8827
Volume28Issue:2Pages:88-93
AbstractCarbon nanotube/polyurethane (CNT/PU) composites were prepared by using an in situ polymerization method, and their electrical sensitivity to tensile strain was investigated. The addition of CNTs can remarkably enhance both the mechanical strength and electrical conductivity of the composite. The CNT/PU composite exhibits a high sensitivity of electrical resistance to changes in tensile strain. The electrical resistance of the CNT/PU composite increases by six orders of magnitude in the enlongation range 0-200%, which can be attributed to the decrease of CNT volume fraction, expansion of total volume, and changes in the CNT network structure under the high strain. The dependence of electrical resistivity of the composites on tensile strain can be well explained by a percolation threshold theory. The high electrical sensitivity of the CNT/PU composites to tensile strain can be used as an intelligent material and strain sensors in the field of construction safety.
description.department[zeng you ; lin peng-fei ; zhao long ; du jin-hong ; liu chang] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [zeng you ; lin peng-fei ; zhao long] shenyang jianzhu univ, shenyang 110168, peoples r china. ; zeng, y (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; yzeng@imr.ac.cn
KeywordCarbon Nanotubes Electrical Properties Polyurethane Composites Tensile Strain Resistance Networks Sensor
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71663
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Y. Zeng,P. F. Lin,L. Zhao,et al. High electrical sensitivity of polyurethane carbon nanotube composites to tensile strain[J]. New Carbon Materials,2013,28(2):88-93.
APA Y. Zeng,P. F. Lin,L. Zhao,J. H. Du,&C. Liu.(2013).High electrical sensitivity of polyurethane carbon nanotube composites to tensile strain.New Carbon Materials,28(2),88-93.
MLA Y. Zeng,et al."High electrical sensitivity of polyurethane carbon nanotube composites to tensile strain".New Carbon Materials 28.2(2013):88-93.
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