砂粒形状对丁腈橡胶在含砂原油中磨损的影响及其力学行为  

Effect of Shape of Sand Grains on Wear of Nitrile Butadiene Rubber in Crude Oil with Sand and their Mechanical Behavior

作　　者：吕晓仁[1] 陈骥驰 乔赫廷[1] 王世杰[1] 

机构地区：[1]沈阳工业大学机械工程学院,沈阳110870 [2]东北大学机械工程与自动化学院,沈阳110819

出　　处：《材料研究学报》2018年第1期65-72,共8页Chinese Journal of Materials Research

基　　金：国家自然科学基金(50875178);辽宁省百千万人才工程培养经费资助(2015(48));辽宁省高等学校杰出青年学者成长计划(LJQ2015080)~~

摘　　要：研究了丁腈橡胶在含砂原油介质中的摩擦磨损行为,分析了在磨损过程中不同形状砂粒的力学行为,并观测和分析了橡胶磨痕表面的形貌和元素的含量。结果表明:在原油介质中加入砂粒,使丁腈橡胶的摩擦系数和磨损量有所增大。在试验载荷范围内圆形砂粒的运动方式以滚动为主,对橡胶表面产生研磨式磨粒磨损。而尖形砂粒在95N后其运动方式由滚动变为滑动,橡胶的磨损机理转变为凿削式磨粒磨损。砂粒平动加速度和转动加速度的研究结果,证实了不同形状砂粒在载荷作用下的运动方式及其对磨损机理的影响。Friction and wear behavior of nitrile butadiene rubber in crude oil with sand was investigated by the reciprocating wear tester, while the movement of sand grains of different shapes during the wear process was also studied. Morphology and chemical composition of the worn surface of rubber were characterized by stereo microscope and field emission scanning electron microscope. The results show that the frictional coefficient and wear loss of the rubber in crude oil increased with the addition of sand. The main movement model of round-shaped sand grains was rolling within the desired range of load, and the grinding abrasive wear was generated on the rubber surface. The movement model of sharp sand grains changed from rolling to sliding when the applied load was above 95 N, and correspondingly the wear mechanism of rubber transformed into cutting abrasive wear. The above observed variation of movement model of different shaped sand grains by varying applied load and its effect on the wear mechanism of rubber was further confirmed by the research result on the mechanical behavior related with translational acceleration and rotational acceleration of sand grains.

关 键 词：无机非金属材料 磨粒磨损 丁腈橡胶 砂粒 力学行为 原油介质 

分 类 号：TH117[机械工程—机械设计及理论]