Abrasive impregnated brush
AssigneesSaint-Gobain Abrasifs, Saint-Gobain Abrasives, Inc.
InventorTrinity J. Boudreau
Life of this patent
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Abstract
An abrasive brush includes a securing element and a plurality of abrasive filaments secured to the securing element to form a brush. Each abrasive filament includes a matrix of thermoplastic polymer and a plurality of alumina abrasive particles interspersed throughout at least a portion of the matrix. The abrasive particles comprising a polycrystalline alpha alumina having a fine crystalline microstructure characterized by an alpha alumina average domain size not greater than 500 nm. The alumina abrasive particles further include a pinning agent comprising a dispersed phase in the polycrystalline alpha alumina.
Claims33
An abrasive brush comprising:
- a securing element;
- and
- a plurality of abrasive filaments secured to the securing element to form a brush, each abrasive filament comprising a matrix of thermoplastic polymer and a plurality of alumina abrasive particles interspersed throughout at least a portion of the matrix, the abrasive particles comprising a polycrystalline alpha alumina having a fine crystalline microstructure characterized by an alpha alumina average domain size not greater than 500 nm, wherein the alumina abrasive particles further comprising a pinning agent, the pinning agent comprising a dispersed phase in the polycrystalline alpha alumina.
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An abrasive brush comprising:
- a securing element;
- and
- a plurality of abrasive filaments secured to the securing element to form a brush, each abrasive filament comprising a matrix of thermoplastic polymer and a plurality of abrasive particles interspersed throughout at least a portion of the matrix,
- wherein the Wear Rating is at least 1.4.
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A method of forming an abrasive brush, comprising:
- combining a thermoplastic polymer with a plurality of abrasive particles into a mixture, the abrasive particles comprising a polycrystalline alpha alumina having a fine crystalline microstructure characterized by an alpha alumina average domain size not greater than 500 nm, wherein the alumina abrasive particles further comprising a pinning agent, the pinning agent comprising a dispersed phase in the polycrystalline alpha alumina;
- extruding the mixture to form an abrasive filament;
- securing the abrasive filament to a securing element to form the abrasive brush.
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Dependencies are inferred from the claim text.