CaCO3晶须和PTFE对PEEK干摩擦性能的影响

Teflon

CaCO3晶须和PTFE对PEEK干摩擦性能的影响
Effect of CaCO3 whisker and PTFE on dry friction behavior of PEEK
作　　者：林有希 高诚辉 李圆

LIN Youxi ,GAO Chenghui, LI Yuan （College of Mechanical Engineering ＆ Automation, Fuzhou University, Fuzhou 350002）

机构地区：福州大学机械工程及自动化学院,福州350002

出　　处：《材料研究学报》 EI CAS CSCD 2007年第21卷第6期 643-648页,共6页

Chinese Journal of Materials Research

基　　金：高等学校博士学科点专项科研基金20060386008资助项目.

摘　　要：用热压成型法制备CaCO3晶须和聚四氟乙烯（PTFE）填充的聚醚醚酮（PEEK）自润滑复合材料,研究了干摩擦条件下复合材料和45#钢环配副的摩擦磨损性能,并与纯PEEK进行了比较.结果表明：CaCO3晶须和PTFE明显改善了PEEK复合材料的减摩、耐磨和承载性能,其摩擦系数比纯PEEK降低约1/2,耐磨性提高27倍;摩擦稳定性显著提高,极限承载能力比纯PEEK提高1倍以上.CaCO3晶须降低了复合材料摩擦表面粘着、犁削和热变形,PTFE有助于复合材料在偶件表面形成连续、均匀的转移膜.PEEK自润滑复合材料的磨损机制主要是轻微的粘着和疲劳磨损.

The composite blocks of polyetheretherketone（PEEK） filled with different content of calcium carbonate （CaCO3） whisker and PTFE were prepared by compression molding. The friction and wear performance of PEEK composites were investigated under dry sliding condition against carbon steel on MM200 block-on-ring apparatus and compared with that of pure PEEK. The results show that the friction performance, wear resistance and limiting pressure-velocity （PV） value of PEEK composites are superior to that of pure PEEK. Inclusion of CaCO3 and PTFE significantly reduces the friction coefficient of composites by 2 times with excellent stability and the specific wear rate by 27 times to PEEK. CaCO3 whisker contributes to abate scuffing, adhesion and plastic deformation of the filled composites, while a thin, uniform and tenacious transfer film formed on the surface of steel ring due to inclusion of PTFE, which conforms to the better tribological behaviors of composites. The wear of filled PEEK composites consists of two major wear mechanisms viz. slight adhesion and fatigue.

关 键 词：复合材料 碳酸钙晶须 聚四氟乙烯 聚醚醚酮 干摩擦
composites, CaCO3 whisker, PTFE, PEEK, dry friction
分 类 号： TB332 [工业技术 > 一般工业技术 > 工程材料学 > 复合材料] TH117 [工业技术 > 机械、仪表工业 > 机械学（机械设计基础理论）]

参考文献作者在撰写文献时引用的其他文献，反映本文的背景或依据。 (18篇)[1]张人佶 冯显灿.聚醚醚酮及其复合材料的摩擦学研究进展[J].材料研究学报,:.
[2]林有希 高诚辉.PEEK基自润滑复合材料的摩擦学研究和应用[J].润滑与密封,2006(2):171-176.
[3]B.J.Briscoe, B.H.Stuart, S.Sebastian, P.J.Tweedale, Failure of poly(ether-ether-ketone) in high speed contacts, Wear, 162-164(A), 407(1993).
[4]J.Flock, K.Friedrich, Q.Yuan, On the friction and wear behaviour of PAN-and pitch-carbon fiber reinforced PEEK composites, Wear, 225-229(1), 304(1999).
[5]J.P.Davim, N.Marques, A.Monteiro, Effect of carbon fibre reinforcement in the frictional behaviour of PEEK in a water lubricated environment, Wear, 251, 1100(2001).
[6]J.Voort Vande, S.Bahadur, Growth and bonding of transfer film and the role of CuS and PTFE in the tribological behavior of PEEK, wear, 181-183(1), 212(1995).
[7]L.Yu, S.Yang, W.Liu, Action of transfer film in improving friction and wear behaviors of iron- and copper-filled poly (etheretherketone) composites. Journal of Applied Polymer Science, 76(2), 179(2000).
[8]M.C.Kuo, C.M.Tsai, J.C.Huang, PEEK composites reinforced by nano-sized SiO2 and Al2O3 particulates, Materials Chemistry and Physics, 90(1), 185(2005).
[9]Q.H.Wang, Q.J.Xue, W.M.Liu, The friction and wear characteristics of SIC and PTFE filled PEEK, Wear, 243, 140(2000).
[10]李武 靳治良 张志宏.无机晶须材料的合成与应用[J].化学进展,:.
[11]B.J.Briscoe, H.Y.Lin, T.A.Stolarski, Friction and wear of Poly(tetrafiuoroethylene)-Poly(etheretherketone) composites: an initial appraisal of the optimum composition, Wear, 108(4), 357(1986).
[12]W.Hufenbach, K.Kunze, J.Bijwe, Sliding wear behaviour of PEEK-PTFE blends, Journal of Synthetic Lubrication, 20(3), 227(2003).
[13]林有希 高诚辉 李志方.碳酸钙晶须含量对聚醚醚酮复合材料摩擦磨损性能的影响[J].摩擦学学报,2006,26(5):448-451.
[14]LIN Youxi, GAO Chenghui, LINing, Influence of CaCO3 whisker content on mechanical and tribological properties of polyetheretherketone composites, Journal of Materials Science & Technology, 22(5), 584(2006).
[15]Z.Zhang, C.Breidt, L.Chang, K.Friedrich, Wear of PEEK composites related to their mechanical performances, Tribology International, 37(3), 271(2004).
[16]K.Tanaka, Y.Uchiyama, S.Toyooka, Mechanism of wear of polytetrafluoroethylene, Wear, 23(2), 153(1973).
[17]M.Rao, C.J.Hooke, S.N.Kukureka, The effect of PTFE on the friction and wear behavior of polymers in rollingsliding contact, Polymer Engineering and Science, 38(12), 1946(1998).
[18]董光能 李健.聚合物摩擦系数的周期性降低现象[J].摩擦学学报,2000,20:226—228.