Process for inducing porosity in an abrasive article

Details Process for inducing porosity in an abrasive article Process for inducing porosity in an abrasive article

1993-09-23

1995-07-04

Jones, Deborah

Abrasive tool making process, material, or composition

Pore forming

51298, 51306, B24D 300

Patent

active

054296480

ABSTRACT:
The invention is a process of manufacturing an abrasive article with the steps of forming an abrasive article in the unfired state comprising an abrasive, a vitreous bond and a polymer resin wherein the polymer resin has an elastic modulus greater than about 2.0.times.10.sup.9 Pa, a weight gain due to moisture absorption when measured after exposure to a 90.degree. C. temperature and 85% relative humidity for 10 hours of less than about 2 wt % and a weight loss on firing in a nitrogen atmosphere at 5.degree. C. per minute to 550.degree. C. of greater than about 95 wt %, and firing the abrasive article thereby decomposing the polymer resin and creating pores in the abrasive article. The invention further includes the abrasive article formed in the unfired state by the above process.

REFERENCES:
patent: 5102429 (1992-04-01), Wald et al.
patent: 5160509 (1992-11-01), Carmen et al.
patent: 5164348 (1992-11-01), Wood
patent: 5213591 (1993-05-01), Celikkaya et al.
patent: 5221294 (1993-06-01), Carman et al.

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