Polyamide 6/Polyurethane/Graphite Composites Prepared by Anionic Polymerization Process.Ⅱ. Friction and Wear
Polyamide 6-polyurethane (PA6-PU) block copolymers filled with graphite particles were prepared by anionic polymerization process.The friction and wear experiments were conducted using a UMT-3 machine with the chromium steel ball sliding on surface of the composites at high sliding speeds of 500rpm,1000rpm and 1500rpm and loads of 78.5N and 157N.With adding of graphite,coefficient of friction and wear rate values of the composites decreased firstly,and then increased.And the influence of the applied load and sliding speed on tribological properties of the composites was explored in this study.The results showed coefficient of friction and wear rate values increased with the increasing of load.Coefficient of friction decreased and wear rate values increased with increasing of sliding speed.Microstructure of wear surface of the tested composites was inspected by scanning electronic mieroseope(SEM) and wear mechanism of the composites was studied.
Polyamide 6 Polyurethane Graphite Composites Friction and wear
Xin Deng Du-Xin Li Jin Wang Jun Yang
School of Materials Science and Engineering, Central South University of Forestry and Technology,Cha State Key Laboratory of Powder Metallurgy, Central South University, Changsha, PR China Zhuzhou Times New Material Technology Co.Ltd., Zhuzhou, PR China
国际会议
西安
英文
30-34
2012-08-24（万方平台首次上网日期，不代表论文的发表时间）