文章摘要
介质润滑条件下不同氧化锌丁腈橡胶的摩擦学行为
Tribological Behavior of NBR Containing Different ZnO Under Medium Lubrication
  
DOI:10.16865/j.cnki.1000-7555.2017.11.009
中文关键词: 氧化锌  丁腈橡胶  摩擦磨损  介质润滑
英文关键词: zinc oxide  nitrile-butadiene rubber  friction and wear  medium lubrication
基金项目:辽宁省高等学校创新团队支持计划(LT2014003);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);辽宁省自然科学基金计划重点项目(20170540716)
作者单位
唐黎明1, 吕晓仁2, 王世杰2, 何恩球2, 郝 敏1 1. 沈阳化工大学 能源与动力工程学院辽宁 沈阳 110142 2. 沈阳工业大学 机械工程学院辽宁 沈阳 110870 
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中文摘要:
      运用MWF-1型往复式微机控制磨损试验机研究了介质润滑条件下不同氧化锌丁腈橡胶的摩擦学行为。对不同氧化锌胶料进行常规制备,磨损试验润滑介质分别选为基础油、基础油/环己烷和环己烷。胶料磨损表面形貌利用扫描电子显微镜进行观察。研究结果显示:基础油润滑条件下,不同氧化锌胶料摩擦系数随磨损时间延长逐渐增大;其他润滑条件下,胶料摩擦系数随磨损时间延长先减小后增大。由各胶料在不同润滑条件下磨损量变化率(与基础油条件下胶料磨损量比较)可以看出,含改性纳米氧化锌胶料的磨损量变化率最小,分别是基础油/环己烷条件下为11.5%和环己烷中为20.7%;含普通氧化锌胶料磨损量变化率最大,分别为50%和82.5%。改性氧化锌胶料具有较高的交联密度,能有效抵御外界液体介质侵入破坏交联网络,保障了胶料具有较高程度的交联而不易被外界机械应力破环,因此耐磨损性能优异。
英文摘要:
      The friction and wear behavior of nitrile-butadiene rubber (NBR) filled with different kinds of zinc oxide (ZnO) were studied through MWF-1 computer-controlled reciprocating wear tester under medium lubrication. Based on samples preparation, the morphology of worn surface was measured by SEM. The lubricating medium was base oil, base oil/cyclohexane and cyclohexane, respectively. The results show that, the frictional coefficient increases gradually as extension of the abrasion time under the base oil lubrication. On the contrary, the frictional coefficient decreases firstly then increases under else medium lubrication. Compared with the wear loss of NBR under base oil, the rate of change on wear loss of NBR containing modified nano-ZnO (modified n-ZnO) is the lowest, 11.5% under base oil/cyclohexane lubrication and 20.7% under cyclohexane lubrication. The rate of change on wear loss of NBR containing conventional ZnO(c-ZnO) is the highest, 50% under base oil/cyclohexane lubrication and 82.5% under cyclohexane lubrication. The NBR containing modified ZnO owns higher crosslinking density, which results in the excellent swelling resistance and wear resistance on NBR.
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