引用本文:裴宁,刘小君,季佳伟,张涛,王兆长,焦云龙,刘焜.微观凸织构及润湿性对橡胶滑动接触界面摩擦特性的影响∗[J].中国表面工程,2022,35(1):162~172
PEI Ning,LIU Xiaojun,JI Jiawei,ZHANG Tao,WANG Zhaochang,JIAO Yunlong,LIU Kun.Effect of Micro-convex Texture and Wettability on Friction Characteristics of Rubber Sliding Contact Interface[J].China Surface Engineering,2022,35(1):162~172
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微观凸织构及润湿性对橡胶滑动接触界面摩擦特性的影响∗
裴宁, 刘小君, 季佳伟, 张涛, 王兆长, 焦云龙, 刘焜
合肥工业大学摩擦学研究所 合肥 230026
摘要:
橡胶材料在日常生活和工业发展中有着广泛的应用,现有研究主要针对橡胶材料的黏弹特性、表面改性等方面展开, 而固体表面微观织构对橡胶滑动接触界面摩擦特性的影响研究较少。针对橡胶滑动接触界面,在往复式摩擦试验机上以钢球和 PDMS 橡胶块组成摩擦副进行往复摩擦试验,通过改变织构类型和形貌参数来对不同表面形貌下的橡胶滑动摩擦特性进行相关探究,同时还考虑表面润湿性对界面摩擦因数的影响。试验研究表明:润滑状态下橡胶表面添加适当凸织构会降低滑动摩擦因数,微织构形状、面积占有率、高度和直径对橡胶表面滑动摩擦因数和接触角大小都有影响,尤其对于长槽织构,其摩擦因数和接触角大小呈现出方向性。结合摩擦因数和润湿性规律发现,一定范围内增大凸织构直径,橡胶表面润湿性变好, 摩擦因数减小;增大凸织构面积占有率、高度时橡胶表面润湿性变差,摩擦因数反而减小。研究橡胶表面微观凸织构及其诱发的润湿性变化对橡胶滑动接触界面摩擦特性的影响,可为橡胶材料表面的摩擦学设计提供理论基础。
关键词:  微观凸织构  润湿性  橡胶  滑动接触界面  摩擦特性
DOI:10.11933/j.issn.1007-9289.20210830002
分类号:TH117
基金项目:国家自然科学基金(51805508, 51875152);合肥市自然科学基金(2021020);中央高校基本业务经费(JZ2021HGTB0101)资助项目
Effect of Micro-convex Texture and Wettability on Friction Characteristics of Rubber Sliding Contact Interface
PEI Ning, LIU Xiaojun, JI Jiawei, ZHANG Tao, WANG Zhaochang, JIAO Yunlong, LIU Kun
Institute of Tribology, Hefei University of Technology, Hefei 230026 , China
Abstract:
Rubber material has been widely used in daily life and industrial development, but the existing research mainly focuses on viscoelastic properties,surface modification and other aspects of rubber material,while there are few studies on the influence of the microstructure of solid surface on the friction properties of rubber sliding contact interface.Based on the rubber sliding contact interface, the reciprocating friction experiments are carried out on a reciprocating friction testing machine, which is composed of a steel ball and a PDMS rubber block. The sliding friction characteristics of rubber under different surface morphologies are investigated by changing the texture types and morphology parameters, and the effect of the wettability of convex texture is also considered. The experimental results show that adding proper convex texture on the rubber surface can reduce the sliding friction factor under lubrication condition. The shape, area share, height and diameter of convex texture have influence on the sliding friction factor and contact angle of rubber surface, especially the friction factor and contact angle of the long groove texture are directional. Combined with the friction factor and wettability, it is found that the wettability of rubber surface becomes better and the friction factor decreases with the increase of convex texture diameter in a certain range. Meanwhile, the wettability of rubber surface becomes poor and the friction factor decreases with the increase of the area share and height of convex texture. The influence of the micro-convex texture of rubber surface and its wettability change on the friction characteristics of rubber sliding contact interface are studied, this may lay a theoretical foundation for the tribological design of rubber material surface.
Key words:  micro-convex texture  wettability  rubber  sliding contact interface  friction characteristics
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