Potassium titanate powder, method for producing same, friction modifier, resin composition, friction material, and friction member
AssigneeOtsuka Chemical Co., Ltd.
InventorsToshifumi Hioki, Hiroyoshi Mori, Yasuhito Ito
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Abstract
Provided is a potassium titanate powder that can avoid safety and health concerns and concurrently, during use in a friction material, can give excellent frictional properties. A potassium titanate powder is a powder formed of bar-like potassium titanate particles having an average length of 30 μm or more, an average breadth of 10 μm or more, and an average aspect ratio of 1.5 or more, wherein the bar-like potassium titanate particles are represented by a composition formula K2TinO2n+1 (where n=5.5 to 6.5).
Claims4
A method for producing a potassium titanate powder formed of bar-like potassium titanate particles having an average length of 30 μm or more, an average breadth of 15 μm or more, and an average aspect ratio of 1.5 to 3, the bar-like potassium titanate particles being represented by a composition formula K2TinO2n+1 where n=5.5 to 6.5), the method comprising the steps of:
- (A) mixing, with mechanical grinding, a compound forming titanium dioxide by application of heat or titanium dioxide and potassium carbonate to prepare a ground mixture;
- (B) heating and firing the ground mixture in an atmosphere with a carbon dioxide concentration of 1% by volume to 60% by volume to prepare potassium dititanate;
- and (C) eluting potassium from the prepared potassium dititanate, followed by heating and firing.
Dependencies are inferred from the claim text.