辐照交联GO/UHMWPE复合材料在人工海水润滑介质下的摩擦学性能研究
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摘要
为改善超高分子量聚乙烯(UHMWPE)在海水润滑介质下的耐磨损性能,采用氧化石墨烯(GO)填充与辐照交联对UHMWPE进行改性处理。利用摩擦磨损试验机研究了辐照前后UHMWPE与GO/UHMWPE复合材料在人工海水润滑介质下的摩擦学性能,利用扫描电子显微镜(SEM)与三维表面轮廓仪扫描试样磨痕表面形貌,计算其磨损率,并分析了其摩擦磨损机理。结果表明,在人工海水润滑介质下,GO填充与辐照交联改性处理均略微增加了UHMWPE的摩擦因数,降低了磨损率;二者共同使用可以协同增强UHMWPE的耐磨性能,降低复合材料的摩擦因数与磨损率; GO填充显著提高了UHMWPE的抗磨粒磨损与抗疲劳磨损性能;辐照交联改性处理进一步提高了GO/UHMWPE复合材料的抗磨粒磨损性能。
To improve its wear resistance under seawater lubrication medium, ultra high molecular weight polyethylene( UHMWPE) was modified with the filler of graphene oxide( GO) and irradiation crosslinked with γ-ray. The tribology properties of UHMWPE and GO/UHMWPE composites before/after irradiation in artificial seawater were studied. The surface morphology of wear was scanned by scanning electron microscopy( SEM) and profilometer,the wear rate of specimen was calculated and the mechanism of tribology was analyzed. The results show that under the artificial sea water lubrication medium,the friction coefficient of UHMWPE is slightly increased by GO filling and irradiation crosslinking modification,and the wear rate is reduced. The combined using of two methods could synergistically enhance the wear resistance of UHMWPE,and reduce the friction coefficient and wear rate of the composites. The abrasive wear and fatigue wear properties of UHMWPE could be significantly improved with the filling of GO and the performance of abrasive wear could be further improved by radiation cross-linking modification.
To improve its wear resistance under seawater lubrication medium, ultra high molecular weight polyethylene( UHMWPE) was modified with the filler of graphene oxide( GO) and irradiation crosslinked with γ-ray. The tribology properties of UHMWPE and GO/UHMWPE composites before/after irradiation in artificial seawater were studied. The surface morphology of wear was scanned by scanning electron microscopy( SEM) and profilometer,the wear rate of specimen was calculated and the mechanism of tribology was analyzed. The results show that under the artificial sea water lubrication medium,the friction coefficient of UHMWPE is slightly increased by GO filling and irradiation crosslinking modification,and the wear rate is reduced. The combined using of two methods could synergistically enhance the wear resistance of UHMWPE,and reduce the friction coefficient and wear rate of the composites. The abrasive wear and fatigue wear properties of UHMWPE could be significantly improved with the filling of GO and the performance of abrasive wear could be further improved by radiation cross-linking modification.
引文
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[24]LIU Y H,WANG X K,PAN G S,et al.A comparative study between graphene oxide and diamond nanoparticles as water-based lubricating additives[J].Sci China Technol Sci,2013,56(1):152-157.
[25]GE S R,WANG S B,HUANG X L.Increasing the wear resistance of UHMWPE acetabular cups by adding natural biocompatible particles[J].Wear,2009,267(5),770-776.
[26]WANG J Z,YAN F Y,XUE Q J.Tribological behavior of PTFE sliding against steel in sea water[J].Wear,2009,267(9):1634-1641.
[27]WANG S,SONG J,LIAO Z H,et al.Study on the wettability and tribological behavior of different polymers as bearing materials for cervical prosthesis[J].J Mat Eng Perform,2015,24(6):2481-2493.
[2]董从林,白秀琴,严新平,等.海洋环境下的材料摩擦学研究进展与展望[J].摩擦学学报,2013,33(3):311-320.
[3]CUI G J,BI Q L,ZHU S Y,et al.Tribological behavior of Cu-6Sn-6Zn-3Pb under sea water,distilled water and drysliding conditions[J].Tribol Int,2012,55:126-134.
[4]CHEN B B,WANG J Z,YAN F Y.Friction and wear behaviors of several polymers sliding against GCr15 and 316steel under the lubrication of sea water[J].Tribol Lett,2011,42(1):17-25.
[5]MEICKE S,PAASCH R.Seawater lubricated polymer journal bearings for use in wave energy converters[J].Renewable Energy,2012,39(1):463-470.
[6]CHEN J,WANG J Z,CHEN B B,et al.Tribocorrosion behaviors of Inconel 625 alloy sliding against 316 steel in seawater[J].Tribol Trans,2011,54(4):514-522.
[7]任书芳,孟军虎,吕晋军,等.不锈钢和Ni Cr合金在人工海水中的摩擦学性能[J].摩擦学学报,2013,33(4):363-371.
[8]CHEN J,YAN F Y.Tribocorrosion behaviors of Ti-6Al-4Vand Monel K500 alloys sliding against 316 stainless steel in artificial seawater[J].Trans Nonferrous Met Soc China,2012,22(6):1356-1365.
[9]GUEZMIL M,BENSALAH W,MEZLINI S.Tribological behavior of UHMWPE against Ti Al6V4 and Co Cr28Mo alloys under dry and lubricated conditions[J].J Mechan Behav Biomed Mater,2016,63:375-385.
[10]王家序,陈战,秦大同.水润滑塑料轴承的摩擦性能研究[J].机械工程材料,2002,26(11):36-38.
[11]段海涛,吴伊敏,王学美,等.新型水润滑轴承材料的摩擦学性能研究[J].武汉理工大学学报,2012,34(6):17-21.
[12]WANG J Z,YAN F Y,XUE Q J.Tribological behaviors of some polymeric materials in sea water[J].Chin Sci Bull,2009,54(24):4541-4548.
[13]GUEZMIL M,BENSALAH W,MEZLINI S.Effect of biolubrication on the tribological behavior of UHMWPE against M30NW stainless steel[J].Tribol Int,2016,94:550-559.
[14]WANG J Z,YAN F Y,XUE Q J.Friction and wear behavior of ultra-high molecular weight polyethylene sliding against GCr15 steel and electroless Ni-P alloy coating under the lubrication of seawater[J].Tribol Lett,2009,35(2):85-95.
[15]庞文超,倪自丰,赵永武,等.UHMWPE在空气,去离子水及海水中的摩擦特性[J].塑料,2014,43(5):64-66.
[16]XIONG L,XIONG D S,JIN J B.Study on tribological properties of irradiated crosslinking UHMWPE nanocomposite[J].J Bionic Eng,2009,6(1):7-13.
[17]AN Y F,TAI Z X,QI Y Y,et al.Friction and wear properties of graphene oxide/ultrahigh-molecular-weight polyethylene composites under the lubrication of deionized water and normal saline solution[J].J Appl Polym Sci,2014,131(1):1-15.
[18]TAI Z X,CHEN Y F,AN Y F,et al.Tribological behavior of UHMWPE reinforced with graphene oxide nanosheets[J].Tribol Lett,2012,46(1):55-63.
[19]GOLCHIN A,WIKNER A,EMAMI N.An investigation into tribological behaviour of multi-walled carbon nanotube/graphene oxide reinforced UHMWPE in water lubricated contacts[J].Tribol Int,2016,95:156-161.
[20]MIN C,NIE P,SONG H J,et al.Study of tribological properties of polyimide/graphene oxide nanocomposite films under seawater-lubricated condition[J].Tribol Int,2014,80:131-140.
[21]HUMMERS Jr W S,OFFEMAN R E.Preparation of graphitic oxide[J].J Am Chem Soc,1958,80(6):1339-1339.
[22]PANG W C,NI Z F,ZHAO Y W,et al.Mechanical and thermal properties of grapheme oxide/ultrahigh molecular weight polyethylene nanocomposites[J].RSC Adv,2015,5:63063-63072.
[23]NI Z F,PANG W C,CHEN G,et al.The influence of irradiation on thermal and mechanical properties of UHMWPE/GO nanocomposites[J].Russ J Appl Chem,2017,90(11):1876-1882.
[24]LIU Y H,WANG X K,PAN G S,et al.A comparative study between graphene oxide and diamond nanoparticles as water-based lubricating additives[J].Sci China Technol Sci,2013,56(1):152-157.
[25]GE S R,WANG S B,HUANG X L.Increasing the wear resistance of UHMWPE acetabular cups by adding natural biocompatible particles[J].Wear,2009,267(5),770-776.
[26]WANG J Z,YAN F Y,XUE Q J.Tribological behavior of PTFE sliding against steel in sea water[J].Wear,2009,267(9):1634-1641.
[27]WANG S,SONG J,LIAO Z H,et al.Study on the wettability and tribological behavior of different polymers as bearing materials for cervical prosthesis[J].J Mat Eng Perform,2015,24(6):2481-2493.