Production method of a high-strength textile material in which raw material stress is eliminated and this material

Abstract

Disclosed is a high-strength polyacrylate textile material and the production method for the said material, which includes the process of eliminating the stress in the raw material (polyacrylonitrile-based textile material) before the crosslinking, hydrolysis, acid and salt processes without allowing the material to physically shrink, so that the amount of shrinkage in crosslinking, hydrolysis, acid and salt processes decreases spontaneously.

1 . A production method for high-strength polyacrylate textile material comprising the process steps of:
 i. Crosslinking of the polyacrylonitrile-based textile material used as raw material;   ii. hydrolyzing the said crosslinked polyacrylonitrile-based textile material to obtain the polyacrylate textile material;   wherein the amount of shrinkage in the crosslinking and hydrolyzing processes decreases spontaneously without being physically limited, eliminating the stress in the raw material (polyacrylonitrile-based textile material) before said processes without allowing the material to physically shrink.   
     
     
         2 . The production method for high-strength polyacrylate textile material according to  claim 1 , wherein the shrinkage tendency is reduced by eliminating the stress in the raw material before the processing step i) or the processing step ii) or both processing steps. 
     
     
         3 . The production method for high-strength polyacrylate textile material according to  claim 1 , further comprising; the process step (iii) wherein the polyacrylate textile material obtained after the processing step ii) is subjected to an acid treatment. 
     
     
         4 . The production method for high-strength polyacrylate textile material according to  claim 2 , comprising; the process step (iv) for the treatment of said acid-treated polyacrylate textile material with metal salts. 
     
     
         5 . The production method for high-strength polyacrylate textile material according to  claim 1 , wherein the stress in the raw material is eliminated by treating it with a substance without allowing the material to physically shrink at a temperature of 80° C. or above, thus reducing shrinkage tendency. 
     
     
         6 . The production method for high-strength polyacrylate textile material according to  claim 5 , wherein the substance is a hot solid surface, a hot liquid, or a hot gas. 
     
     
         7 . The production method for high-strength polyacrylate textile material according to  claim 6 , wherein the substance is hot metal roll surfaces. 
     
     
         8 . The production method for high-strength polyacrylate textile material according to  claim 6 , wherein the substance is hot water or other liquids that are suitable for the purpose. 
     
     
         9 . The production method for high-strength polyacrylate textile material according to  claim 6 , wherein the substance is water vapor, hot air, or other gases suitable for the purpose. 
     
     
         10 . The production method for high-strength polyacrylate textile material according to  claim 1 , wherein the elimination of stress in the raw material is carried out under atmospheric conditions, under pressure, under vacuum or a combination thereof. 
     
     
         11 . The production method for high-strength polyacrylate textile material according to  claim 1 , wherein at process step i), the reduction of shrinkage tendency is carried out by annealing in a pressurized autoclave without allowing the product to physically shrink. 
     
     
         12 . The production method for high-strength polyacrylate textile material according to  claim 1 , wherein the polyacrylonitrile-based textile material is acrylic fiber or its semi-finished products or waste thereof. 
     
     
         13 . The production method for high-strength polyacrylate textile material according to  claim 1 , wherein the polyacrylonitrile-based textile material is acrylic yarn or its semi-finished products or waste thereof. 
     
     
         14 . The production method for high-strength polyacrylate textile material according to  claim 1  wherein the polyacrylonitrile-based textile material is acrylic fabric or its semi-finished products or waste thereof. 
     
     
         15 . A high-strength polyacrylate fiber obtained by the production method of a high-strength polyacrylate textile material according to  claim 1 . preceding claims. 
     
     
         16 . A high-strength polyacrylate yarn obtained by the production method of a high-strength polyacrylate textile material according to  claim 1 . 
     
     
         17 . A high-strength polyacrylate fabric obtained by the production method of a high-strength polyacrylate textile material according to  claim 1 .