The sliding friction of UHMWPE modified by Schiff base copper (II) complex tested at low speeds

被引：0

作者：

Wu, Li ^{[1
,2
,3
]}

Gao, Xin-Lei ^{[4
]}

Gao, Wan-Zhen ^{[1
]}

机构：

[1] Wuhan Research Institute of Materials Protection, Wuhan 430030, China

[2] Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, China

[3] Hubei Key Lab. of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan 430073, China

[4] Department of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China

来源：

Mocaxue Xuebao/Tribology | 2010年 / 30卷 / 05期

关键词：

Friction - Speed - Vegetable oils - Copper compounds;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Influences of normal load, sliding speed and sliding duration on friction coefficient of ultrahigh molecularweight polyethylene (UHMWPE) modified by 5%, 10% and 15% copper (II) complex in mass fraction of bissalicylaldehyde-ethylenediamine (Schiff base copper (II) complex) respectively were investigated on a microtribometer in a speed range of 50~1600 μm/s under conditions of dry friction and vegetable oil lubricated condition. A 100Cr6 steel ball was used as counterpart. Pure UHMWPE was also tested as a reference. Results showed that the friction coefficient of modified UHMWPE with 5%~15% (mass fraction) Schiff base copper (II) complex was independent from normal load at low sliding speeds in dry condition or using vegetable oil as a lubricant. And it was much lower than that of pure UHMWPE, i. e. the friction coefficient of all modified UHMWPE in dry condition had a 29% reduction as compared to that of pure UHMWPE. The results also showed that the effect of sliding speed on friction coefficient under the lubricated condition could be decreased as the content of Schiff base copper (II) complex in the modified UHMWPE was high enough, e. g. 15%. The results showed that the friction coefficient of modified UHMWPE with 5%~15% Schiff base copper (II) complex was independent from sliding speed and sliding duration under dry condition. The stable friction coefficient of the modified UHMWPE at low speeds under dry sliding can meet the requirement of frictional pair for the nanopositioning application.

引用

页码：453 / 460