| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin bond grinding wheel improved in heat resistance and mechanical characteristic. SOLUTION: This heat resistant resin bond grinding wheel is obtained by heating and burning the following composition under pressurization. The composition is composed of: 20 to 50 volume % polyimide resin powder obtained by polymerizing a mixture containing 85 to 97 mol % 3,3',4,4'-biphenyl tetracarboxylic acid or di-anhydride of the acid and 15 to 3 mol % 2,3,3',4'-biphenyl tetracarboxylic acid or di-anhydride of the acid and a diamine compound mainly composed of p-phenylenediamine, and polyimide resin obtained by imidization, or at least at the surface part by polymerizing 2,3,3',4'-biphenyl tetracarboxylic acid or di-anhydride of the acid and a diamine compound mainly composed of p-phenylenediamine, and polyimide resin obtained by imidization; 50 to 70 volume % metal powder; and 10 to 30 volume % diamond fine particles. COPYRIGHT: (C)2004,JPO
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