为了探讨填料含量对Cu/聚四氟乙烯(PTFE)复合材料摩擦磨损的影响,运用二维颗粒流程序(PFC2D)对PTFE基复合材料在不同含量的Cu颗粒填充条件下与45#钢的摩擦磨损过程进行数值模拟分析,主要研究了Cu/PTFE复合材料的摩擦转移及磨损问题.模拟结果表明:Cu/PTFE复合材料与45#钢组成摩擦副时,会在45#钢表面形成一层转移颗粒层,转移颗粒层的形成能够有效地降低PTFE基复合材料的磨损.Cu颗粒的添加一方面可以通过自身转移的“钉扎”作用促进转移颗粒层的形成,另一方面由于提高了复合材料的整体强度,又对转移颗粒层的形成产生了一定的抑制作用.所以添加适量的Cu有利于转移颗粒层的形成,但Cu含量过高时其作用又会降低.Cu颗粒的加入降低了PTFE基复合材料的磨损量,且随着Cu含量的增加减磨效果增强.在Cu颗粒的质量分数为50％时,PTFE基复合材料的磨损颗粒数较纯PTFE的减少了近一半.
参考文献
| [1] | V. N. Aderikha;V. A. Shapovalov.Mechanical and tribological behavior of PTFE-polyoxadiazole fiber composites. Effect of filler treatment[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,20115/6(5/6):970-976. |
| [2] | 张招柱;薛群基;沈维长;刘维民.金属填充PTFE复合材料的摩擦磨损性能研究[J].高分子材料科学与工程,1999(1):73-75. |
| [3] | 王家序;陈战;秦大同.填料对聚四氟乙烯工程塑料改性的影响[J].机械工程材料,2002(10):35-37. |
| [4] | 黄丽;杨儒;郭江江;张金生.微米和纳米SiO2改性聚四氟乙烯的摩擦磨损性能[J].复合材料学报,2004(4):82-86. |
| [5] | 豆立新;龚烈航;沈健;吕振坚;龚天平;周键钊.复合材料添加剂对改性PTFE的摩擦转移膜的形成和稳定作用[J].复合材料学报,2004(2):65-69. |
| [6] | W. Gregory Sawyer;Kevin D. Freudenberg;Praveen Bhimaraj;Linda S. Schadler.A study on the friction and wear behavior of PTFE filled with alumina nanoparticles[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,20035/6(5/6):573-580. |
| [7] | Fillot N;Iordanoff I;Berthier Y.Modelling third body flows with a discrete element method-a tool for understanding wear with adhesive particles[J].Tribology International,200640(06):973-981. |
| [8] | Mona Oqvist.Numerical simulations of mild wear using updated geometry with different step approaches[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,20011/2(1/2):6-11. |
| [9] | M. Schargott;V. L. Popov;A. I. Dmitriev;S. G. Psakhie.Development of surface topography for the rail-wheel contact[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,20089/10(9/10):1542-1548. |
| [10] | 赵永春;刘小君;王伟;刘焜.基于离散元法的表面形貌相互作用研究[J].合肥工业大学学报(自然科学版),2010(4):487-490. |
| [11] | C. Wang;D.D. Tannant;P.A. Lilly.Numerical analysis of the stability of heavily jointed rock slopes using PFC2D[J].International journal of rock mechanics and mining sciences,20033(3):415-424. |
| [12] | D.O. Potyondy;P.A. Cundall.A bonded-particle model for rock[J].International journal of rock mechanics and mining sciences,20048(8):1329-1364. |
| [13] | 刘顺桂;刘海宁;王思敬;胡波;张晓平.断续节理直剪试验与PFC2D数值模拟分析[J].岩石力学与工程学报,2008(9):1828-1836. |
| [14] | Users' manual for Particle Flow Code in 2 Dimensions (PFC2D)[CP].,2002. |
| [15] | 周健;池毓蔚;池永;徐建平.砂土双轴试验的颗粒流模拟[J].岩土工程学报,2000(6):701-704. |
| [16] | Yang, D.;Sheng, Y.;Ye, J.;Tan, Y..Discrete element modeling of the microbond test of fiber reinforced composite[J].Computational Materials Science,20102(2):253-259. |
| [17] | S. Bahadur;C. Sunkara.Effect of transfer film structure, composition and bonding on the tribological behavior of polyphenylene sulfide filled with nano particles of TiO{sub}2, ZnO, CuO and SiC[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,20059(9):1411-1421. |
| [18] | 周正华 .PTFE基复合材料摩擦转移规律模拟研究[D].合肥工业大学,2013. |
| [19] | Xie T;Zhou Z H;Xu Z X.Characteristics of the transfer film and tribological properties of oxide/PTFE composites[J].Advanced Materials Research,2013631-632:172-175. |
| [20] | 解挺;万媛媛;缪鹏;温丹丹;焦明华;俞建卫;尹延国.PTFE三层复合材料摩擦过程的界面动态迁移[J].润滑与密封,2010(2):1-5. |
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