Method for preparing capacitive stress sensing intelligent fabric

Abstract

A method for preparing a capacitive stress sensing intelligent fabric. Conductive yarn serves as an electrode of a capacitive sensor, and the conductive yarn is obtained by means of direct preparation, coating, doping, etc.; an insulating elastomer is coated on the conductive yarn as a dielectric material; and the conductive yarn, which has been subjected to insulation processing, is interlaced among common yarns by using interweaving and overlapping structures among fabric yarns. A fabric sensing array is formed by means of a common manufacturing technique, and the method can be widely applied to force monitoring, etc., for intelligent garments, intelligent homes, touch-control screens, electronic skin and three-dimensional fabric composite materials.

What is claimed is: 
     
         1 . A method of manufacturing a capacitive stress sensing intelligent fabric, the method comprising:
 1) preparing conductive yarns from metal, carbon or conductive polymers by doping or coating;   2) coating an insulation polymer elastomer with dielectric properties on the surface of the conductive yarn obtained in 1), to yield electrode yarns integrating a dielectric material and the conductive yarns; and   3) weaving the electrode yarns obtained in 2) using traditional textile technology, to obtain a stress-sensing intelligent fabric.   
     
     
         2 . The method of  claim 1 , wherein in 1), a conductive component of the conductive yarns is a metal, carbon, conductive polymer, or a mixture thereof; the preparation method of the conductive yarns comprises direct preparation, doping, coating or in-situ polymerization, or a combination thereof. 
     
     
         3 . The method of  claim 1 , wherein in 1), a preparation method of the conductive yarns comprises direct preparation, doping, coating or in-situ polymerization, or a combination thereof. 
     
     
         4 . The method of  claim 1 , wherein in 2), the insulation polymer elastomer with dielectric properties is polydimethylsiloxane, styrene-butadiene-styrene, polyurethane, a derivative thereof, or a mixture thereof. 
     
     
         5 . The method of  claim 1 , wherein in 2), the pressure sensitivity of the integrated electrode yarns can be regulated by adjusting the ratio of the elastomer prepolymer to the curing agent 
     
     
         6 . The method of  claim 1 , wherein in 3), the preparation mode of the stress-sensing intelligent fabric comprises weaving, knitting, three-dimensional plaiting, or a combination thereof.