초록 ▼

A potassium titanate, method for manufacturing the potassium titanate, a friction material using the potassium titanate and a resin composition using the potassium titanate are disclosed. The potassium titanate is represented by K2TinO(2n+1) (n=4.0-11.0) and has the highest X-ray diffraction intensi

A potassium titanate, method for manufacturing the potassium titanate, a friction material using the potassium titanate and a resin composition using the potassium titanate are disclosed. The potassium titanate is represented by K2TinO(2n+1) (n=4.0-11.0) and has the highest X-ray diffraction intensity peak (2θ) in the range of 11.0°-13.5° with its half width being not less than 0.5°.

대표청구항 ▼

1. A method for manufacture of potassium titanate including the steps of: mixing a titanium source and a potassium source while milling them mechanochemically by a vibration mill;firing the milled mixture to prepare potassium dititanate; andsubjecting the potassium dititanate to an acid treatment so

1. A method for manufacture of potassium titanate including the steps of: mixing a titanium source and a potassium source while milling them mechanochemically by a vibration mill;firing the milled mixture to prepare potassium dititanate; andsubjecting the potassium dititanate to an acid treatment so as to dissolve a potassium content from the potassium dititanate and firing the resultant to manufacture potassium titanate represented by K2TinO(2n+1) (n=4.0-11.0) in which it has the highest X-ray diffraction intensity peak (2θ) in the range of 11.0°-13.5°, its half width, determined by performing peak searching after smoothing using a weighted average method and background removal using a Sonnevelt-Visser method, is not less than 0.5°, it has a mean particle diameter, measured by a laser diffraction particle-size distribution measurement device, in the range of 5-20 μm, and it has an indeterminate configuration which is not a fibrous, platy or particulate form. 2. The method for manufacture of potassium titanate as recited in claim 1, characterized in that the milled mixture is fired at a temperature in the range of 650-1,000° C. 3. The method for manufacture of potassium titanate as recited in claim 1, characterized in that the potassium dititanate, subsequent to the acid treatment, is fired at a temperature in the range of 400-700° C. 4. A method for manufacture of potassium titanate including the steps of: mixing a titanium source and a potassium source while milling them mechanochemically by a vibration mill;firing the milled mixture to prepare potassium dititanate; andsubjecting the potassium dititanate to an acid treatment so as to dissolve a potassium content from the potassium dititanate and firing the resultant to manufacture potassium titanate represented by K2TinO(2n+1) (n=4.0-11.0) in which it has the highest X-ray diffraction intensity peak (2θ) in the range of 11.0-13.5°, its half width, determined by performing peak searching after smoothing using a weighted average method and background removal using a Sonnevelt-Visser method, is not less than 0.8°, and it has a mean particle diameter, measured by a laser diffraction particle-size distribution measurement device, in the range of 5-20 μm. 5. The method for manufacture of potassium titanate as recited in claim 4, characterized in that the milled mixture is fired at a temperature in the range of 650-1,000° C. 6. The method for manufacture of potassium titanate as recited in claim 4, characterized in that the potassium dititanate, subsequent to the acid treatment, is fired at a temperature in the range of 400-700° C.