Strain Sensitivity of Polypyrrole-Coated Fabrics under Unidirectional Tensile Deformation.

Autor: Leung, M. Y., Tao, X. M., Yuen, M. C. W.
Zdroj: Abstracts of the Fiber Society Symposium; 2002, p44-46, 3p, 2 Black and White Photographs, 1 Diagram, 2 Graphs
Abstrakt: This article examines the gauge factor or strain sensitivity of textile sensor in relation to various degrees of deformation. Sensitivity of textile substrates coated with conducting polymer towards various stimuli like temperature, strains, humidity and chemical gases has attracted great interests. The polypyrrole-coated fabrics have been demonstrated to possess sensing capacity of strain and temperature. It is most interesting that the gauge factor varies drastically from the polymer film to the coated fabric, highlighting the importance of the effects of textile structures. However, the mechanisms on the influence of textile structures to the gauge factor is still very unclear. It is most interesting to investigate the relationships between the electrical conductivity and structures of conducting textile fabrics under repeated large deformation. Conductive textile structures of either plain weave or a plain knitted structure can be generally represented by an electrical network. Conductivity is measured in line with extension. It is given that the relationship between the electrical resistance of filament and extension is almost linear in all cases for the 1st, 5th and 10th cycle of extension.
Databáze: Supplemental Index