含不同类型氧化锌丁腈橡胶的干摩擦行为研究
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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。
Nitrile-butadiene rubber( NBR) materials filled by conventional ZnO( c-ZnO) and nano-ZnO( n-ZnO)were prepared,and the material properties and physical and mechanical performances of Nitrile-butadiene rubber( NBR)containing different kinds of Zinc Oxide( ZnO) were analyzed. The influences on tribological properties of NBR by types of ZnO were studied by using MPV-600 abrasive wear tester,the morphology of worn surface was measured by scanning electron microscopy( SEM),and the wear mechanism was analyzed. The results indicate that,compared with NBR containing c-ZnO,the n-ZnO can further improve the tensile strength and tensile stress of NBR. The maximum torque of NBR containing n-ZnO is higher than that of NBR containing c-ZnO,and the scorch time and optimum cure time of NBR containing nZnO are both shortened. The NBR containing n-ZnO exhibits the more outstanding wear resistance,which is mainly due to its greater crosslinking density and higher systematic hardness. The wear mechanism of NBR containing n-ZnO is abrasive wear and little adhesive wear,while that of NBR containing c-ZnO is abrasive wear and serious adhesive wear.
Nitrile-butadiene rubber( NBR) materials filled by conventional ZnO( c-ZnO) and nano-ZnO( n-ZnO)were prepared,and the material properties and physical and mechanical performances of Nitrile-butadiene rubber( NBR)containing different kinds of Zinc Oxide( ZnO) were analyzed. The influences on tribological properties of NBR by types of ZnO were studied by using MPV-600 abrasive wear tester,the morphology of worn surface was measured by scanning electron microscopy( SEM),and the wear mechanism was analyzed. The results indicate that,compared with NBR containing c-ZnO,the n-ZnO can further improve the tensile strength and tensile stress of NBR. The maximum torque of NBR containing n-ZnO is higher than that of NBR containing c-ZnO,and the scorch time and optimum cure time of NBR containing nZnO are both shortened. The NBR containing n-ZnO exhibits the more outstanding wear resistance,which is mainly due to its greater crosslinking density and higher systematic hardness. The wear mechanism of NBR containing n-ZnO is abrasive wear and little adhesive wear,while that of NBR containing c-ZnO is abrasive wear and serious adhesive wear.
引文
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[3]谢忠麟,杨敏芳.橡胶制品实用配方大全[M].2版.北京:化学工业出版社,2004.
[4]赵奕玲,丁林,连加松.纳米ZnO-70在橡胶中的分散性及其应用研究[C]//第八届全国橡胶工业新材料技术论坛.北京:中国橡胶工业协会,2008:101-106.
[5]陈月辉,王锦成,王继虎,等.纳米氧化锌母炼胶对NR性能的影响[J].橡胶工业,2007,54(1):17-20.CHEN Y H,WANG J C,WANG J H,et al.Influence of nanozinc oxide masterbatch on physical properties of NR vulcanizate[J].China Rubber Industry,2007,54(1):17-20.
[6]周祚万,楚珑晟,张再昌.纳米氧化锌在橡胶复合材料中的初步应用[J].橡胶工业,2002,49(7):403-405.ZHOU Z W,CHU L S,ZHANG Z C.The initial application o nanometer zinc oxide in rubber composites[J].China Rubber Industry,2002,49(7):403-405.
[7]马正先,韩跃新,郑龙熙,等.纳米氧化锌的应用研究[J].化工进展,2002,21(1):60-62.MA Z X,HAN Y X,ZHENG L X,et al.Research on the application of nano-zinc oxide[J].Chemical Industry and Engineering Progress,2002,21(1):60-62.
[8]STAMHNIS J E,GROENEWOUD W M,MADSEN J.Two types of SSBR blends for tire tread application[J].Plastics and Rubber processing and Application,1989,11(2):93-98.
[9]王哲,王世杰,孙浩,等.干摩擦及原油润滑条件下丁腈橡胶-钢摩擦副的磨损机理研究[J].组合机床与自动化加工技术,2010(9):6-8.WANG Z,WANG S J,SUN H,et al.Research on wear behavior of NBR-steel pair in dry sliding and oil lubricating[J].Modular Machine Tool and Automatic Manufacturing Technique,2010(9):6-8.
[10]吕晓仁,王世杰,孙浩.干摩擦和原油润滑下丁腈橡胶、氟橡胶磨损行为研究[J].润滑与密封,2011,36(8):63-66.LV X R,WANG S J,SUN H.Wear behavior of nitrile butadiene rubber and fluorubber under dry sliding and base oil lubricating[J].Lubrication Engineering,2011,36(8):63-66.
[11]BAEKA D K.Fretting behavior of a rubber coating effect of temperature and surface roughness variations[J].Wear,2008,265:620-625.
[12]王贵一.橡胶的摩擦及试验[J].特种橡胶制品,2000,21(3):55-62.WANG G Y.Friction and testing of rubbers[J].Special Purpose Rubber Products,2000,21(3):55-62.
[13]胡波.丁苯橡胶磨耗性能的影响因素及机理探讨[D].青岛:青岛科技大学,2006.