Preparation method of carbon modified filler

US9382429B2 · kind B2 · utility

Assignees

• NANJING TAIWEI TECHNOLOGY CO., LTD. · CN
• NANJING UNIVERSITY OF TECHNOLOGY · CN

Inventors

• Xiaohua Lu · Nanjing, CN
• Yijun Shi · Shanghai, CN
• Ke Zhou · Kunshan, CN
• Changsong Wang · 安丰镇, CN
• Wenjun Yao · Nanjing, CN

Key dates

• Filing date: Aug 17, 2010
• Grant date: Jul 5, 2016
• Expiry date: Aug 23, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/3454
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A preparation method of carbon modified filler is provided. The method is: putting the fillers into the reaction zone of a reactor, starting the first heating-up to 400-500° C. under the protective atmosphere at first, then introducing hydrogen after the heating-up; starting the second heating-up to 600-1200° C. after introducing hydrogen and simultaneously introducing the mixture of hydrogen and carbon source gas, keeping at the terminal temperature for 0.1-5 hours, introducing nitrogen and stopping heating after the reaction, cooling, and then getting the carbon modified filler. The above method can obtain a friction material with good mechanical properties, excellent friction and wear performances, stable friction coefficient at high temperature, good braking force and no heat recession.