耐热环氧树脂涂层的制备及摩擦学性能研究

发布时间：2018-03-10 16:15

  本文选题：固体润滑涂层　切入点：减摩　出处：《合肥工业大学》2015年硕士论文　论文类型：学位论文

【摘要】：固体涂层润滑是一种非常重要的固体润滑方式,因其优异的摩擦学性能被广泛应用于航空航天、船舶、车辆等高技术工业的各个领域。随着工业的进步发展,不断对固体润滑涂层的使用性能提出新的要求,普通涂层的各方面性能都需要提高。环氧树脂涂层因其工艺性好、成本低等原因被广泛应用于滑动轴承、轴瓦等摩擦副零件,但普通环氧树脂涂层的耐热性差,承载能力不高,应用受到限制。因此对环氧树脂涂层的耐热、耐磨特性的改进与研究具有很大的研究价值。本论文首先通过摩擦磨损实验研究考察E54环氧树脂、F51酚醛环氧树脂、SKE环氧树脂涂层的摩擦学性能,优选了SKE环氧树脂作为胶黏剂并进一步优化其固化工艺及固化剂含量。在此基础上进行受热分析和变温摩擦磨损实验,探讨了温度对涂层综合性能的影响。并针对树脂涂层随温度升高耐磨性变差的缺陷,在基础配方中进一步添加碳纤粉,改善其耐磨性,深入考察了碳纤粉对涂层摩擦学性能的影响。最后通过光学显微镜、SEM、能谱成分分析等进一步研究粘结润滑涂层的摩擦磨损特性机理。通过系列化实验分析,以最优的涂层附着强度和摩擦磨损性能为标杆,完成了SKE环氧树脂基减摩自润滑涂层的制备工艺技术研究。在不同温度下对E54、F51和SKE三种树脂涂层的性能进行综合比较,结果表明SKE涂层具有很好的耐热性,直至300℃都能够保持较好的粘结强度、较优的摩擦学性能。通过摩擦磨损机理探讨,从理论上分析了适量添加碳纤粉增强填料对提高SKE环氧树脂基减摩自润滑涂层耐磨性的重要性。并通过碳纤粉颗粒度和添加比例的实验优化,获知添加3%的600目碳纤粉,可以使SKE树脂自润滑涂层的减摩和耐磨性能达到最佳。通过共同努力,现已促使该研究成果在合作单位获得的实际应用。
[Abstract]:Solid coating lubrication is a very important method of solid lubrication. Because of its excellent tribological properties, it is widely used in various fields of high-tech industries, such as aerospace, ships, vehicles and so on. New requirements for the performance of solid lubricating coatings have been put forward, and the properties of common coatings need to be improved. Epoxy resin coatings are widely used in friction pairs such as sliding bearings and bearing bearings because of their good technological properties and low cost. However, the common epoxy coating has poor heat resistance, low bearing capacity and limited application. In this paper, the tribological properties of E54 epoxy resin F51 phenolic epoxy resin / SKE epoxy coating were investigated by friction and wear experiments. SKE epoxy resin was selected as adhesive and its curing process and curing agent content were optimized. On the basis of this, thermal analysis and friction and wear experiments at variable temperature were carried out. The effect of temperature on the comprehensive properties of the coating was discussed. In order to improve the wear resistance of the resin coating, carbon fiber powder was added to the basic formula to improve the wear resistance of the resin coating. The effect of carbon fiber powder on the tribological properties of the coating was investigated in depth. Finally, the friction and wear mechanism of the adhesive lubricating coating was further studied by means of optical microscope (SEM) and energy dispersive composition analysis (EDS). With the optimal adhesion strength and friction and wear performance of the coating as the benchmark, the preparation technology of the antifriction self-lubricating coating based on SKE epoxy resin was studied. The properties of E54F51 and SKE resin coatings were comprehensively compared at different temperatures. The results show that the SKE coating has good heat resistance, and can maintain better bond strength and better tribological properties up to 300 鈩，

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