
试验研究
现代制造工程(ModemManufacturingEngineering)
2017年第3期
改性处理衬垫对自润滑关节轴承粘接性能
及摩擦学性能的影响
梁霞,邱明,李迎春,胡仁松
(河南科技大学机电工程学院,洛阳471003)
摘要:通过对PTFE纤维与芳纶纤维复合编织封垫分别进行丙烯酰胺处理、磷酸酯偶联剂处理和甘油醚处理,利用In stron5944型电子万能材料试验机和自制的复合摆动式摩擦磨损性能试验机,对关节轴承的剩离强度及摩擦磨损性能进行了测试和试验,考察了不同改性处理对自润滑关节轴承的粘接性能和摩擦学性能的影响,结果表明,衬垫经改性处理后轴承的粘接性能得到了提高,并且轴承的摩擦因数、磨损量以及摩擦温升有所降低,其中经丙烯酰胺处理后,轴承的粘接性能和摩擦学性能最优。
关键词:自润滑关节轴承:衬垫:粘接性能:摩擦学性能
中图分类号:TH117.1文献标惠码:A文章编号:1671—3133(2017)03—0007—05 DOI:10.16731/j. cnki. 1671 3133.2017.03.002
Effectsoflinermodificationonthebondingbehaviorandtribological
properties of self-lubricating spherical plain bearings
Liang Xia, Qiu Ming, Li Yingchun, Hu Rensong
(School of Mechatronics Engineering, Henan University of Science and
Technology,Luoyang 471003,Henan,China)
Abstract: The liners of hybrid PTFE and kevlar fabrics were treated with acrylamide, phosphate ester and glycerol ether. The peeling strength was measured using Instron 5944 electronic universal material testing machine and the tribological properties were investigated using self-made compound swinging type friction and wear testing machine, the effects of different treatment methods on the bonding properties and tribological properties of spherical plain bearing were investigated. The results show that the bonding behavior of the modified bearing have a greater degree of improvement and the friction coefficient, wear rate and fric-tion temperature of the bearing were decreased,the bonding properties and tribological properties of spherical plain bearing were the best.
Key words: self-lubricating spherical plain bearing;liner;bonding property ;tribological property
引言 0
自润滑关节轴承是在外圈内表面粘接自润滑材料衬垫的一种关节轴承11-2),因其具有结构较简单、寿命长、承载力大,以及自润滑、自调心等特点[34],被广泛应用于电力、航空航天、农业机械和铁路等领域[56]。磨损是自润滑关节轴承的主要失效形式[7]。一些学者对改善PTFE纤维以及芳纶纤维织物复合材料的摩擦磨损性能进行了初步研究,而对于改性PTFE
纤维与芳纶纤维交互编织衬垫摩擦磨损性能的研究较少,有研究表明,对自润滑关节轴承衬垫进行表面处理可改善其摩擦磨损性能(")。PTFE纤维与芳纶纤维交互编织衬垫具有优异的自润滑和耐磨性能,但是作为衬垫粘接面的芳纶纤维,其表面光滑,苯环位阻效应大,活性基团少,导致衬垫与粘接剂的界面浸润性不好,结合力差,从而影响自润滑衬垫摩擦学性能的发挥,而改性处理衬垫通过在芳纶纤维束基体上接枝活性较强的大分子链对衬垫表面进行改性,可优化
。国家自然科学基金项目(51275155);河南省科技创新杰出人才基金项目(154200510013);河南省高校科技创新团队支持计刘项目(13IRTSTHN025)
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