含不同类型氧化锌丁腈橡胶的干摩擦行为研究

发布时间：2018-03-14 05:06

本文选题：氧化锌　切入点：丁腈橡胶　出处：《润滑与密封》2017年01期 　论文类型：期刊论文

【摘要】：制备普通氧化锌与纳米氧化锌填充的丁腈橡胶(NBR),分析氧化锌类型对NBR材料特性及物理机械性能的影响。在MPV-600型磨粒磨损试验机上研究氧化锌类型对NBR摩擦磨损性能的影响,采用扫描电镜对磨损表面形貌进行观察,分析其磨损机制。结果表明:与普通氧化锌硫化胶相比,纳米氧化锌可使NBR的拉伸强度、定伸应力进一步提高;加入纳米氧化锌的NBR的最大转矩提高,焦烧时间与正硫化时间都较普通氧化锌的缩短;添加纳米氧化锌的NBR的耐摩擦磨损性能优异,这主要归因于其具有更大的交联密度与较高的体系硬度。添加纳米氧化锌的NBR的磨损机制为磨料磨损和少量的黏着磨损,而添加普通氧化锌的NBR的磨损机制为磨料磨损和严重的黏着磨损。
[Abstract]:Ordinary zinc oxide and nano-zinc oxide filled nitrile rubber (NBR) were prepared. The effects of zinc oxide type on the properties and physical and mechanical properties of NBR were analyzed. The effect of zinc oxide type on the friction and wear properties of NBR was studied on the MPV-600 abrasive wear tester. The morphology of the worn surface was observed by scanning electron microscope and the wear mechanism was analyzed. The results showed that compared with the ordinary zinc oxide vulcanizate, nano-zinc oxide could further increase the tensile strength and tensile stress of NBR. The maximum torque of NBR with nano-zinc oxide is increased, the scorch time and positive vulcanization time are shorter than that of ordinary zinc oxide, and the friction and wear resistance of NBR with nano-zinc oxide is excellent. This is mainly due to the higher crosslinking density and higher hardness of the system. The wear mechanism of NBR with nano-zinc oxide is abrasive wear and a little adhesive wear. The wear mechanism of NBR with common zinc oxide is abrasive wear and severe adhesion wear.
【作者单位】：沈阳工业大学机械工程学院;沈阳化工大学能源与动力工程学院;中国航空工业空气动力研究院;
【基金】：辽宁省高等学校创新团队支持计划项目(LT2014003) 辽宁省百千万人才工程培养经费资助项目(2015(48))
【分类号】：TQ333.7;TB302.3

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