工况条件对PI/PTFE复合材料自润滑性能的影响  

Effects of Different Operation Conditions on the Self Lubricating Properties of PI/PTFE Composites

作　　者：贾志宁[1] 郝彩哲[1] 闫艳红[2] 

机构地区：[1]承德石油高等专科学校,河北承德067000 [2]燕山大学机械工程学院,河北秦皇岛066004

出　　处：《塑料工业》2014年第11期85-88,96,共5页China Plastics Industry

摘　　要：为了考察聚酰亚胺/聚四氟乙烯(PI/PTFE)基复合材料的摩擦学适应性,研究了不同工况条件对PI/PTFE复合材料和金属试件对磨时摩擦学性能的影响。实验结果表明,法向接触载荷对复合材料的耐磨性和减摩性的影响具有一致性,随着法向接触载荷的增大,摩擦因数和磨损率均逐渐减小。滑动速度对复合材料的减摩性的影响比较复杂,呈现出先减小然后增大再减小的变化趋势,与此相对应的是复合材料耐磨性则表现出逐渐增大的趋势。对试件磨损形貌分析表明,在中等或较高载荷下,复合材料表面主要以塑性流动为主,黏附磨损是其主要的磨损形式;在较高滑动速度下,复合材料的磨损则表现为微切削和黏附磨损。In order to investigate the tribological adaptability of PI/PTFE composite, the effects of different operation conditions on the tribological properties of PI/FFFE composites and steel were studied. The experimental results showed that the contact load affected the wear resistance and antifriction of PI/PTFE composite with a consistent feature. With the increase of contact load, the frictional coefficient and wear rate decreased. The influence of sliding velocity on the antifriction of composite was relative complex, at first decreasing and then increasing and again decreasing. However, the wear resistance displayed the trend of gradual increase. The observations on the wear morphology showed that the plastic flow was main deformation form and adhesive wear was the primary wear pattern at moderate or relative high loads. At high sliding speed, the wear performances of PI/PTFE composite were micro-cutting and adhesive wear.

关 键 词：聚四氟乙烯 聚酰亚胺 复合材料 摩擦学 工况条件 

分 类 号：TB332[一般工业技术—材料科学与工程]