Method for preparing elastic conductive fiber

Abstract

A method for preparing an elastic conductive fiber, which includes: immersing an elastic polyurethane fiber in an alkaline solution containing a base selected from the group consisting of triethylamine and sodium hydroxide, so as to obtain an alkaline-treated elastic polyurethane fiber; immersing the alkaline-treated elastic polyurethane fiber in a first treating composition containing a metal trifluoroacetate and an alcohol solvent, so as to obtain a processed elastic polyurethane fiber containing the metal trifluoroacetate; and immersing the processed elastic polyurethane fiber in a second treating composition containing water and a reducing agent, so that a metal particle is formed on a surface of the processed elastic polyurethane fiber by reducing metallic ions in the metal trifluoroacetate.

What is claimed is: 
     
         1 . A method for preparing an elastic conductive fiber, comprising:
 immersing an elastic polyurethane fiber in an alkaline solution containing a base selected from the group consisting of triethylamine and sodium hydroxide, so as to obtain an alkaline-treated elastic polyurethane fiber;   immersing the alkaline-treated elastic polyurethane fiber in a first treating composition containing a metal trifluoroacetate and an alcohol solvent, so as to obtain a processed elastic polyurethane fiber containing the metal trifluoroacetate; and   immersing the processed elastic polyurethane fiber in a second treating composition containing water and a reducing agent, so that a metal particle is formed on a surface of the processed elastic polyurethane fiber by reducing metallic ions in the metal trifluoroacetate.   
     
     
         2 . The method as claimed in  claim 1 , wherein the base is present in an amount greater than or equal to 20 wt % and less than 30 wt % based on 100 wt % of alkaline solution. 
     
     
         3 . The method as claimed in  claim 1 , wherein the elastic polyurethane fiber is immersed in the alkaline solution at a temperature ranging from 25° C. to 90° C. for a time period ranging from 10 minutes to 120 minutes. 
     
     
         4 . The method as claimed in  claim 1 , wherein the metal trifluoroacetate is present in an amount ranging from 10 wt % to 50 wt % based on 100 wt % of the first treating composition. 
     
     
         5 . The method as claimed in  claim 1 , wherein the alkaline-treated elastic polyurethane fiber is immersed in the first treating composition at a temperature ranging from 25° C. to 70° C. for a time period ranging from 5 minutes to 40 minutes. 
     
     
         6 . The method as claimed in  claim 1 , wherein the reducing agent is present in an amount ranging from 0.5 wt % to 4 wt % based on 100 wt % of the second treating composition. 
     
     
         7 . The method as claimed in  claim 1 , wherein the processed elastic polyurethane fiber is immersed in the second treating composition at a temperature ranging from 25° C. to 90° C. for a time period ranging from 10 minutes to 140 minutes. 
     
     
         8 . The method as claimed in  claim 1 , wherein the second treating composition further contains a nano conductive material. 
     
     
         9 . The method as claimed in  claim 8 , wherein the nano conductive material is present in an amount ranging from 1.56 wt % to 50 wt % based on 100 wt % of the second treating composition.