基于磺酸镁的船用润滑油纳米添加剂摩擦学性能实验研究

发布时间：2019-04-29 18:03

【摘要】：随着纳米技术的不断发展,当把某些含有纳米材料的添加剂加入润滑油中时,滑油能对摩擦副起到意想不到的润滑效果,特别是在内燃机重载、高速、高温、低温、重污染等环境下,纳米材料作为润滑油添加剂能够表现出良好的摩擦学性能。因此,将纳米材料应用于船用润滑油添加剂产品的研究具有重要的现实意义。近年来,碱值高、酸中和能力强、减磨抗磨效果显著的纳米磺酸镁添加剂得到了快速发展。中、高碱值的添加剂产品已广泛在市场中应用。随着经济环境持续低迷,国际贸易量减少,船舶长期低负荷运转的情况愈发严重。由此导致的低温腐蚀现象使得船舶营运公司对船用润滑油的碱值提出了更高的要求,基于此,超高碱值纳米磺酸镁添加剂开始逐渐进入人们的视野。文章首先利用傅立叶红外光谱仪对样品的分子结构进行了表征,同时还利用马尔文激光粒度分析仪表征了样品的粒径分布。然后,文章利用了SRV多功能试验机分别测试了含不同比例添加剂的油样在不同载荷下的摩擦系数,并利用四球摩擦试验机测试了各个油样的最大无卡咬负荷值。最后,结合摩擦学相关理论,归纳实验数据,分析船用润滑油超高碱值纳米磺酸镁添加剂的摩擦学性能。实验结果表明：润滑油中添加质量分数为8%的超高碱值纳米磺酸镁添加剂能够最为显著地提高润滑油的摩擦学性
[Abstract]:With the development of nanotechnology, when some additives containing nano-materials are added to lubricating oil, the lubricating oil can play an unexpected lubrication effect on friction pairs, especially in the heavy load, high-speed, high-temperature and low-temperature internal combustion engines. Under the environment of heavy pollution, nano-materials can show good tribological properties as lubricating oil additives. Therefore, it is of great practical significance to apply nano-materials to the research of marine lubricating oil additive products. In recent years, nano-magnesium sulfonate additives with high alkali value, strong acid neutralization ability and remarkable wear-reducing and anti-wear effect have been developed rapidly. Medium, high alkali value additive products have been widely used in the market. As the economic environment continues to be depressed and the volume of international trade decreases, the long-term low-load operation of ships becomes more and more serious. The phenomenon of low temperature corrosion results in higher requirements of marine lubricating oil for its alkali value. Based on this, ultra-high alkali nano-magnesium sulfonate additive has gradually entered people's field of view. In this paper, the molecular structure of the sample was characterized by Fourier transform infrared spectroscopy (FTIR), and the particle size distribution of the sample was also characterized by Ma Erwen laser particle size analyzer. Then, the friction coefficient of oil samples with different proportions of additives under different loads was tested by SRV multi-function testing machine, and the maximum non-snap load value of each oil sample was tested by four-ball friction tester. Finally, the tribological properties of ultra-high alkali nano-magnesium sulfonate additive for marine lubricating oil were analyzed by combining the tribological theory with experimental data. The experimental results show that the tribological properties of lubricating oil can be improved most obviously by adding 8% ultra-high alkali nano-magnesium sulfonate additive to lubricating oil.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U677

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