Coated abrasives having a performance enhancing composition

Abstract

The present disclosure relates generally to coated abrasive articles that include a tribological performance enhancing composition in a make coat, a size coat, a supersize coat, or combinations thereof, as well as methods of making coated abrasive articles. The present disclosure also relates to coated abrasive articles including a supersize coating comprising a sulfide scavenging composition and/or a crosslinked zinc acrylic binder, as well as methods for making and using such abrasive articles. The present disclosure also relates generally to abrasive articles that include aggregates having an anti-wear composition or grinding aid disposed on or within the aggregates.

What is claimed is: 
     
         1 . An abrasive article, comprising:
 a substrate;   a make coat disposed on the substrate, an optional size coat disposed on the make coat, and an optional supersize coat disposed on the make coat, further comprising abrasive grains or aggregates disposed on or in the make coat and a plurality of aggregates disposed on or in the make coat, the size coat, or the supersize coat,   wherein each of the plurality of aggregates comprise potassium fluoroborate and 0.5 to 60 wt. % of aggregate binder composition.   
     
     
         2 . The abrasive article of  claim 1 , comprising a ratio of average aggregate size to average abrasive grain size in a range of 1:10 to 10:1. 
     
     
         3 . The abrasive article of  claim 1 , wherein the plurality of aggregates are disposed in the make coat. 
     
     
         4 . The abrasive article of  claim 1 , wherein the plurality of aggregates are disposed in the size coat. 
     
     
         5 . The abrasive article of  claim 1 , wherein the plurality of aggregates are disposed in the supersize coat. 
     
     
         6 . The abrasive article of  claim 1 , wherein the plurality of aggregates are disposed in the size coat. 
     
     
         7 . The abrasive article of  claim 1 , wherein the aggregate binder composition comprises a ceramic binder, a vitreous binder, a polymeric resin binder, or a combination thereof. 
     
     
         8 . The abrasive article of  claim 7 , wherein the aggregate binder composition comprises a vitreous binder. 
     
     
         9 . The abrasive article of  claim 7 , wherein the polymeric resin binder comprises a phenolic polymeric composition. 
     
     
         10 . The abrasive article of  claim 9 , wherein the phenolic polymeric compositions comprise a phenolic resole composition, a urea formaldehyde composition, a urethane composition, an epoxy composition, a polyimide composition, a polyamide composition, a polyester composition, an acrylate composition, a protein based composition, a starch based composition, or any combination thereof. 
     
     
         11 . The abrasive article of  claim 1 , wherein the aggregate binder composition comprises a continuous phase in each of the plurality of aggregates. 
     
     
         12 . The abrasive article of  claim 1 , wherein the aggregate binder composition comprises a discontinuous phase in each of the plurality of aggregates. 
     
     
         13 . The abrasive article of  claim 11 , wherein the aggregate binder composition comprises bond posts at points of contact. 
     
     
         14 . The abrasive article of  claim 1 , wherein the abrasive particles comprise silica, alumina, zirconia, silicon carbide, silicon nitride, boron nitride, garnet, diamond, co-fused alumina zirconia, ceria, titanium diboride, boron carbide, flint, emery, alumina nitride, or a combination thereof. 
     
     
         15 . The abrasive article of  claim 1 , wherein each of the plurality of aggregates are in a range of at least 20 microns to not greater than 4000 microns. 
     
     
         16 . The abrasive article of  claim 15 , wherein the plurality of aggregates are disposed in the make coat, the size coat, or a combination thereof. 
     
     
         17 . A method of forming an abrasive article, comprising:
 providing a substrate; and   disposing a make coat on the substrate,   disposing abrasive grains or aggregates on or in the make coat, and   disposing a plurality of aggregates on or in the make coat   wherein each of the plurality of aggregates comprise potassium fluoroborate and 0.5 to 60 wt. % of aggregate binder composition.   
     
     
         18 . The method of  claim 17 , wherein each of the plurality of aggregates comprise 0.5 to 60 wt. % of the aggregate binder composition. 
     
     
         19 . The method of  claim 17 , wherein each of the plurality of aggregates comprise 5 to 80 wt. % of the abrasive particles. 
     
     
         20 . The abrasive article of  claim 1 , wherein each aggregate comprises 0.5 to 35 wt. % of the aggregate binder composition.