不同润滑条件下UHMWPE/GO的摩擦磨损性能研究
|
摘要
采用改进的Hummers法制备出氧化石墨烯(GO),并用热压成型法制备超高摩尔质量聚乙烯(UHMWPE)/GO复合材料,利用UMT-2MT摩擦磨损实验机研究不同润滑条件下复合材料的摩擦磨损性能。结果表明,在干摩擦条件下,纯UHMWPE材料的摩擦因数较低,磨损率和磨痕深度较高;而0.3%GO复合材料的磨损率为1.8×10-5mm3/(N·m),相比纯UHMWPE下降25.0%,磨痕的深度约为5.0μm,相比纯UHMWPE下降了17.6%,说明GO可以改善UHMWPE的摩擦磨损性能,提高UHMWPE的耐磨性。与干摩擦相比,在去离子水润滑和小牛血清润滑条件下的UHMWPE/GO复合材料具有较好的摩擦磨损特性,其中小牛血清润滑条件下复合材料的摩擦磨损性能最佳。
Modified Hummers method was used to prepare graphene oxide( GO) and then ultrahigh molecular weight polyethylene( UHMWPE) / GO composites were prepared by hot compression molding,of which the friction and wear properties were measured by UUMT-2MT tribological tester in different lubrication conditions. The results showed that, in the condition of dry friction, the friction coefficient of pure UHMWPE showed a lower level while the wear rate and wear depth were high. Wear rate and wear depth of the composite with 0. 3% GO were 1. 8 × 10- 5mm3/( N·m) and 5. 0 μm respectively,which decreased by25. 0% and 17. 6% respectively compared to pure UHMWPE. So GO could increase the friction and wear properties of UHMWPE and improve its abrasive resistance. Compared with the condition of dry friction,the UHMWPE / GO composite had better friction and wear properties in deionized water and BSA lubrication conditions,and the UHMWPE / GO composite showed the best tribological properties in BSA lubrication.
Modified Hummers method was used to prepare graphene oxide( GO) and then ultrahigh molecular weight polyethylene( UHMWPE) / GO composites were prepared by hot compression molding,of which the friction and wear properties were measured by UUMT-2MT tribological tester in different lubrication conditions. The results showed that, in the condition of dry friction, the friction coefficient of pure UHMWPE showed a lower level while the wear rate and wear depth were high. Wear rate and wear depth of the composite with 0. 3% GO were 1. 8 × 10- 5mm3/( N·m) and 5. 0 μm respectively,which decreased by25. 0% and 17. 6% respectively compared to pure UHMWPE. So GO could increase the friction and wear properties of UHMWPE and improve its abrasive resistance. Compared with the condition of dry friction,the UHMWPE / GO composite had better friction and wear properties in deionized water and BSA lubrication conditions,and the UHMWPE / GO composite showed the best tribological properties in BSA lubrication.
引文
[1]SREEKANTH P S R,KANAGARAJ S.Assessment of bulk and surface properties of medical grade UHMWPE based nanocomposites using Nanoindentation and microtensile testing[J].J Mech Behav Biomed,2013,18:140-151.
[2]袁辉,刘廷华,刘云湘,等.流动改性剂对UHMWPE流动及磨损性能的影响研究[J].工程塑料应用,2004,32(5):21-24.
[3]XIONG D S,LIN J M,FAN D L.Wear properties of nanoAl2O3/UHMWPE composites irradiated by gamma ray against a Co Cr Mo alloy[J].Biomed Mater,2006,1(3):175-179.
[4]LI N N,XIAO C F.Preparation and properties of UHMWPE/Si O2hybrid hollow fibre membranes via thermally induced phase separation-stretching method[J].Iran Polym J,2009,18(6):479-489.
[5]WEN J P,YIN P,ZHEN M H.Friction and wear properties of UHMWPE/nano-MMT composites under oilfield sewage condition[J].Mater Lett,2008,62(25):4161-4163.
[6]GONG G F,YANG H Y,FU X.Tribological properties of kaolin filled UHMWPE composites in unlubricated sliding[J].Wear,2004,256(1-2):88-94.
[7]SUNER S,BLADEN C L,GOWLAND N,et al.Investigation of wear and wear particles from a UHMWPE/multi-walled carbon nanotube nanocomposite for total joint replacements[J].Wear,2014,317(1-2):163-169.
[8]YAN J A,XIAN L D,CHOU M Y.Structural and electronic properties of oxidized graphene[J].Phys Rev Lett,2009,103(8):086802.
[9]ZOO Y S,AN J W,LIM D P,et al.Effect of carbon nanotube addition on tribological behavior of UHMWPE[J].Tribol Lett,2004,16(4):305-309.
[2]袁辉,刘廷华,刘云湘,等.流动改性剂对UHMWPE流动及磨损性能的影响研究[J].工程塑料应用,2004,32(5):21-24.
[3]XIONG D S,LIN J M,FAN D L.Wear properties of nanoAl2O3/UHMWPE composites irradiated by gamma ray against a Co Cr Mo alloy[J].Biomed Mater,2006,1(3):175-179.
[4]LI N N,XIAO C F.Preparation and properties of UHMWPE/Si O2hybrid hollow fibre membranes via thermally induced phase separation-stretching method[J].Iran Polym J,2009,18(6):479-489.
[5]WEN J P,YIN P,ZHEN M H.Friction and wear properties of UHMWPE/nano-MMT composites under oilfield sewage condition[J].Mater Lett,2008,62(25):4161-4163.
[6]GONG G F,YANG H Y,FU X.Tribological properties of kaolin filled UHMWPE composites in unlubricated sliding[J].Wear,2004,256(1-2):88-94.
[7]SUNER S,BLADEN C L,GOWLAND N,et al.Investigation of wear and wear particles from a UHMWPE/multi-walled carbon nanotube nanocomposite for total joint replacements[J].Wear,2014,317(1-2):163-169.
[8]YAN J A,XIAN L D,CHOU M Y.Structural and electronic properties of oxidized graphene[J].Phys Rev Lett,2009,103(8):086802.
[9]ZOO Y S,AN J W,LIM D P,et al.Effect of carbon nanotube addition on tribological behavior of UHMWPE[J].Tribol Lett,2004,16(4):305-309.