防腐剂吸附效应与润滑油防腐性能的关系

Relationship between adsorption effect of anticorrosion additive and anticorrosion ability of lubricating oil

引言 润滑油中添加剂的性质决定了润滑油的性能,防腐剂的存在对润滑油的防腐性能起到了决定性作用,为开发适合于海洋环境条件下防腐型轴承润滑油,防腐剂对润滑油防腐性能的影响规律和影响机理等问题均亟需解决。添加剂在摩擦副界面的吸附是液-固吸附,目前对于两相吸附的研究主要针对于气-液[1]、气-固间的吸附[2-3]和离子流体中的液-固吸附研究[4-6],

A series of lubricating oils containing different mass fractions of anticorrosion additive were prepared.Static adsorbent experiments using simulating axletree balls in those lubricating oil samples were performed.The absorbency of lubricating oil before and after the adsorbent experiments were measured with UV spectrograph,and the adsorbent quantity of anticorrosion additive was calculated through the absorbency difference of the lubricating oil before and after the adsorbent experiments to characterize the adsorption effect of anticorrosion additive.The temperature and humidity of ocean environment were simulated through a self-made equipment,and the axletree balls with which adsorbent experiments were performed in the lubricating oil were put into the equipment to do the corrosion experiments.Data processing on the laboratory findings was made according to the hierarchical corrosion grade criterion,and the anticorrosion ability of the lubricating oil was estimated on the basis of axletree balls＇ corrosion grade.The relationship between adsorbent quantity of anticorrosion additive on the axletree balls surface and anticorrosion ability of lubricating oil indicated that the anticorrosion ability of lubricating oil was determined by the adsorption effect of anticorrosion additive.