Process for making a fabricated article from polyolefin

Abstract

In one instance, the present disclosure describes a method for preparing a carbonaceous article comprising: providing a crosslinked polyolefin fabricated article; stabilizing the crosslinked polyolefin fabricated article by air oxidation to provide a stabilized fabricated article; treating with a boron-containing liquid (BCL) during or intermediate to at least one of the preceding steps; and carbonizing the stabilized fabricated article. In one instance the present disclosure describes a method for preparing a stabilized article.

What is claimed is: 
     
         1 . A method for preparing a carbonaceous article comprising:
 (a) providing an olefin resin;   (b) forming a fabricated article from the olefin resin;   (c) crosslinking the fabricated article;   (d) stabilizing the fabricated article by air oxidation;   (e) treating with a boron-containing liquid (BCL) during or intermediate to at least one of the preceding steps; and   (f) carbonizing the stabilized fabricated article.   
     
     
         2 . The method of  claim 1 , wherein the BCL is a boron source suitable for depositing boron in the fabricated article. 
     
     
         3 . The method of  claim 2 , wherein the boron source is elemental boron, borane, borate, borinic acid, boronic acid, boric acid, borinic ester, boronic ester, boroxine, aminoborane, borazine, borohydrides and derivatives and combinations thereof. 
     
     
         4 . The method of  claim 1 , wherein step (d) comprises heating the fabricated article at or above 120° C. 
     
     
         5 . The method of  claim 1 , wherein step (b) comprises converting said polyolefin resin to a fabricated article by fiber spinning, film extrusion casting, blown film processing, profile extrusion through a die, injection molding, solution casting or compression molding. 
     
     
         6 . A method for preparing a carbonaceous article comprising:
 (a) providing a crosslinked polyolefin fabricated article;   (b) stabilizing the crosslinked polyolefin fabricated article by air oxidation to provide a stabilized fabricated article;   (c) treating with a boron-containing liquid (BCL) during or intermediate to at least one of the preceding steps; and   (d) carbonizing the stabilized fabricated article.   
     
     
         7 . The method of  claim 6 , wherein the BCL is a boron source suitable for depositing boron in the fabricated article. 
     
     
         8 . The method of  claim 7 , wherein the boron source is elemental boron, borane, borate, borinic acid, boronic acid, boric acid, borinic ester, boronic ester, boroxine, aminoborane, borazine, borohydrides and derivatives and combinations thereof. 
     
     
         9 . The method of  claim 6 , wherein step (b) comprises heating the crosslinked fabricated article at or above 120° C.