Bonded abrasive article and method of making the same

Abstract

A bonded abrasive article comprises a bonded abrasive matrix. The bonded abrasive matrix comprises, based on the total weight of the bonded abrasive matrix: 10 to 30 weight percent of phenolic binder; abrasive particles retained in the phenolic binder; and from 0.001 to 9 weight percent of ethyl maltol. Methods of making and using are also disclosed.

What is claimed is: 
     
         1 . A bonded abrasive article comprising a bonded abrasive matrix, wherein the bonded abrasive matrix comprises, based on the total weight of the bonded abrasive matrix:
 10 to 30 weight percent of phenolic binder;   abrasive particles retained in the phenolic binder; and   from 0.001 to 9 weight percent of ethyl maltol.   
     
     
         2 . The bonded abrasive article of  claim 1 , wherein the bonded abrasive matrix is free of vitreous bond precursor. 
     
     
         3 . The bonded abrasive article of  claim 2 , wherein the vitreous bond precursor comprises a silicaceous glass or a precursor thereof. 
     
     
         4 . The bonded abrasive article of  claim 1 , wherein the phenolic binder comprises resole and novolac phenolic components. 
     
     
         5 . The bonded abrasive article of  claim 1 , wherein the ethyl maltol is at least partially dissolved in the phenolic binder. 
     
     
         6 . The bonded abrasive article of  claim 1 , wherein the ethyl maltol is present in an amount of from 0.1 to 2 weight percent based on the total weight of the bonded abrasive matrix. 
     
     
         7 . The bonded abrasive article of  claim 1 , wherein the bonded abrasive matrix comprises an annulus disposed around a central hole. 
     
     
         8 . A method of making a bonded abrasive article, the method comprising:
 mixing components comprising:
 curable phenolic binder precursor; 
 abrasive particles; and 
 ethyl maltol; and 
   curing the curable phenolic binder precursor to provide a bonded abrasive matrix,   wherein the bonded abrasive matrix comprises, based on the total weight of the bonded abrasive matrix, 10 to 30 weight percent of phenolic binder, abrasive particles retained in the phenolic binder, and 0.001 to 9 weight percent of the ethyl maltol.   
     
     
         9 . The method of  claim 8 , wherein the bonded abrasive matrix is free of vitreous bond precursor. 
     
     
         10 . The method of  claim 9 , wherein the vitreous bond precursor comprises a silicaceous glass or a precursor thereof. 
     
     
         11 . The method of  claim 8 , wherein the phenolic binder comprises a resole phenolic binder. 
     
     
         12 . The method of  claim 8 , wherein the ethyl maltol is at least partially dissolved in the curable phenolic binder precursor. 
     
     
         13 . The method of  claim 8 , wherein the ethyl maltol is present in an amount of from 0.1 to 2 weight percent based on the total weight of the bonded abrasive matrix. 
     
     
         14 . The method of  claim 8 , wherein the bonded abrasive matrix comprises an annulus disposed around a central hole.