几种灌木和乔木类植物叶表蜡质的润滑性能及磨损分析
发布时间：2018-10-19 19:48
【摘要】：近年来,由于全球石油能源危机并且价格持续走高,保护环境呼声日益强烈,润滑剂对环境的危害引起越来越多学者的关注。为了减少环境的污染,改善润滑剂的生态效能,做到使用性能与生态效能的合理平衡,环境友好型添加剂成为研究热点。本文以合成酯为基础油、聚四氟乙烯脂为基础脂,3种乔木类植物(银杏、圆柏、香樟)和3种灌木类植物(爬地柏、沙冬青、卫矛冬青)叶表蜡质作添加剂,通过气质联用(GC-MS)分析了6种植物叶表蜡质的主要成分。用高速往复摩擦磨损试验机评价了植物叶表蜡质在钢-铝和钢-钢摩擦副下的摩擦学性能。用扫描电子显微镜(SEM)观察分析了磨痕表面形貌以及使用二次离子飞行质谱(TOF-SIMS)分析了磨痕表面阴阳离子的质量。结果表明:1、通过GC-MS分析了6种植物叶表蜡质的主要成分,发现植物叶表蜡质提取物中含有大量的脂肪醇以及少量脂肪酸和脂肪酯等有机物。2、研究表明,银杏、爬地柏、圆柏等叶表蜡质作为润滑油添加剂和润滑脂添加剂对钢-铝、钢-钢摩擦副显示了一定的减摩和抗磨性能。3、铝块磨斑表面TOF-SIMS分析表明,磨斑表面附着的阴离子和铝发生反应,在滑动面形成一层摩擦化学反应膜,起到润滑作用。4、通过ANSYS有限元软件对本次试验摩擦磨损过程进行仿真,分析了接触区域的应力分布,推测出铝块磨损的过程。
[Abstract]:In recent years, due to the global oil energy crisis and the rising price, environmental protection voice is increasingly strong, lubricant harm to the environment has attracted more and more scholars' attention. In order to reduce environmental pollution, improve the ecological efficiency of lubricants, and achieve a reasonable balance between performance and ecological efficiency, environment-friendly additives have become a research hotspot. In this paper, synthetic ester was used as base oil, polytetrafluoroethylene (PTFE) as base lipid, three tree species (ginkgo biloba, juniper, camphor) and three kinds of shrub plants (cypress repens, holly, holly) as additive. The main components of waxy on leaves of 6 species of plants were analyzed by GC-MS (GC-MS). The tribological properties of plant blade surface wax quality under steel-aluminum and steel-steel friction pairs were evaluated by high speed reciprocating friction and wear tester. The surface morphology of wear mark was observed by scanning electron microscope (SEM) and the mass of anion and anion on wear mark surface was analyzed by secondary ion flight mass spectrometry (TOF-SIMS). The results showed that: 1, the main components of six kinds of plant leaf wax were analyzed by GC-MS, and it was found that there were a lot of fatty alcohols, a few fatty acids and fatty esters in the extracts from the leaves of plants. As lubricating oil additives and lubricating grease additives, the waxy surface of cypress showed certain antifriction and antiwear properties to steel-aluminum, steel-steel friction pairs. 3. The TOF-SIMS analysis of the surface of the wear spot of aluminum showed that the anions attached to the surface of the wear spot reacted with aluminum. The friction and wear process of the test was simulated by ANSYS finite element software, the stress distribution in the contact area was analyzed, and the wear process of aluminum block was inferred.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH117.22
本文编号：2282178
[Abstract]:In recent years, due to the global oil energy crisis and the rising price, environmental protection voice is increasingly strong, lubricant harm to the environment has attracted more and more scholars' attention. In order to reduce environmental pollution, improve the ecological efficiency of lubricants, and achieve a reasonable balance between performance and ecological efficiency, environment-friendly additives have become a research hotspot. In this paper, synthetic ester was used as base oil, polytetrafluoroethylene (PTFE) as base lipid, three tree species (ginkgo biloba, juniper, camphor) and three kinds of shrub plants (cypress repens, holly, holly) as additive. The main components of waxy on leaves of 6 species of plants were analyzed by GC-MS (GC-MS). The tribological properties of plant blade surface wax quality under steel-aluminum and steel-steel friction pairs were evaluated by high speed reciprocating friction and wear tester. The surface morphology of wear mark was observed by scanning electron microscope (SEM) and the mass of anion and anion on wear mark surface was analyzed by secondary ion flight mass spectrometry (TOF-SIMS). The results showed that: 1, the main components of six kinds of plant leaf wax were analyzed by GC-MS, and it was found that there were a lot of fatty alcohols, a few fatty acids and fatty esters in the extracts from the leaves of plants. As lubricating oil additives and lubricating grease additives, the waxy surface of cypress showed certain antifriction and antiwear properties to steel-aluminum, steel-steel friction pairs. 3. The TOF-SIMS analysis of the surface of the wear spot of aluminum showed that the anions attached to the surface of the wear spot reacted with aluminum. The friction and wear process of the test was simulated by ANSYS finite element software, the stress distribution in the contact area was analyzed, and the wear process of aluminum block was inferred.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH117.22
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