Conductive elastic fiber and method for fabricating the same

Abstract

A conductive elastic fiber and a method for fabricating the conductive elastic fiber are provided. The method for fabricating the conductive elastic fiber includes following steps. A first solution is provided, where the first solution includes an elastic polymer dissolved in a first solvent, wherein the weight ratio of the elastic polymer to the first solvent is from 5:95 to 20:80. A second solution is provided, where the second solution includes a conductive material dispersed in a second solvent, wherein the weight ratio of the conductive material to the second solvent is from 5:95 to 20:80. Next, a wet spinning process employing the first solution and the second solution is performed to obtain the conductive elastic fiber.

What is claimed is: 
     
         1 . A method for fabricating the conductive elastic fiber, comprising:
 providing a first solution, wherein the first solution comprises an elastic polymer dissolved in a first solvent, wherein the weight ratio of the elastic polymer to the first solvent is from 5:95 to 20:80;   providing a second solution, wherein the second solution comprises a conductive material dispersed in a second solvent, wherein the conductive material to the second solvent is from 5:95 to 20:80; and   subjecting the first solution and the second solution to a wet spinning process, obtaining the conductive elastic fiber.   
     
     
         2 . The method as claimed in  claim 1 , wherein the elastic polymer is polyurethane, polyester, styrene-butadiene-styrene resin (SBS), nitrile butadiene rubber (NBR) or a combination thereof. 
     
     
         3 . The method as claimed in  claim 1 , wherein the conductive material is conductive powder, rod-like conductive material, or conductive wire. 
     
     
         4 . The method as claimed in  claim 1 , wherein the conductive material is a metal or an alloy of the metal, wherein the metal is gold, silver, copper, aluminum, or nickel. 
     
     
         5 . The method as claimed in  claim 1 , wherein the conductive material is transparent conductive material. 
     
     
         6 . The method as claimed in  claim 1 , wherein the first solution and the second solution is independently dimethylformamide, dimethylacetamide, dimethylsulfone, tetrahydrofuran, dichloromethane, chloroform, ethylene carbonate, propylene 
     
     
         7 . The method as claimed in  claim 1 , wherein the second solution further comprising an adhesive, wherein the adhesive dissolved in the second solvent, wherein the weight ratio of the conductive material to the adhesive is from 1:2 to 50:1. 
     
     
         8 . The method as claimed in  claim 7 , wherein the adhesive is a polymer or oligomer. 
     
     
         9 . The method as claimed in  claim 8 , wherein the adhesive is polyurethane, styrene-butadiene-styrene resin (SBS), nitrile butadiene rubber (NBR) or a combination thereof. 
     
     
         10 . The method as claimed in  claim 1 , wherein steps of subjecting the first solution and the second solution to a wet spinning process comprise:
 mixing the first solution with the second solution, obtaining a third solution, wherein the first solvent is miscible with the second solvent, and the elastic polymer is dissolved in the second solvent; and   subjecting the third solution serving as a spinning solution to a wet spinning process.   
     
     
         11 . The method as claimed in  claim 10 , wherein the weight ratio of the first solution and the second solution is from 1:2 to 3:1. 
     
     
         12 . The method as claimed in  claim 1 , wherein steps of subjecting the first solution and the second solution to a wet spinning process comprise:
 mixing the first solution with the second solution, obtaining a third solution, wherein the first solvent is miscible with the second solvent, and the elastic polymer is dissolved in the second solvent; and   subjecting water serving as a spinning solution of inner spinning nozzle and the third solution serving as a spinning solution of outer spinning nozzle to a wet spinning process via a spinning device with two spinning nozzles.   
     
     
         13 . The method as claimed in  claim 12 , wherein the weight ratio of the first solution and the second solution is from 1:2 to 3:1. 
     
     
         14 . The method as claimed in  claim 7 , wherein steps of subjecting the first solution and the second solution to a wet spinning process, comprise:
 subjecting the first solution serving as a spinning solution of the inner spinning nozzle and the second solution serving as a spinning solution of the outer spinning nozzle to a wet spinning process via a spinning device with two spinning nozzles.   
     
     
         15 . A conductive elastic fiber, comprising:
 an elastic polymer and a conductive material, wherein the weight ratio of the elastic polymer and the conductive material from 1:2 to 3:1.   
     
     
         16 . The conductive elastic fiber as claimed in  claim 15 , wherein the conductive elastic fiber is a solid conductive elastic fiber. 
     
     
         17 . The conductive elastic fiber as claimed in  claim 15 , wherein the conductive elastic fiber is a hollow conductive elastic fiber. 
     
     
         18 . The conductive elastic fiber as claimed in  claim 15 , further comprising an adhesive, wherein the weight ratio of the conductive material to the adhesive is from 1:2 to 50:1. 
     
     
         19 . The conductive elastic fiber as claimed in  claim 18 , wherein the conductive elastic fiber is a conductive elastic fiber with a core-shell structure, wherein the core-shell structure consists of a core portion and a shell portion, wherein the core portion comprises the elastic polymer, and the shell portion comprises the conductive material and the adhesive. 
     
     
         20 . The conductive elastic fiber as claimed in  claim 18 , wherein the adhesive is a polymer or oligomer.