柴油抗磨剂分子的极性基团对其抗磨性能的影响  

EFFECT OF POLAR GROUPS OF DIESEL ANTI-WEAR AGENT ON ANTI-WEAR PERFORMANCE

作　　者：李妍[1] 龙军[1] 赵毅[1] 蔺建民[1] 黄燕民[1] 周涵[1] Li Yan;Long Jun;Zhao Yi;Lin Jianmin;Huang Yanmin;Zhou Han(SINOPEC Research Institute of Petroleum Processing,Beijing 100083)

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《石油炼制与化工》2019年第3期80-86,共7页Petroleum Processing and Petrochemicals

基　　金：中国石油化工股份有限公司合同项目(S109032)

摘　　要：多种脂肪酸及其酯类衍生物抗磨性能的评价数据显示,影响其抗磨性能的关键因素是抗磨剂分子极性基团的结构。采用分子模拟方法,研究摩擦过程中抗磨剂分子极性基团结构对其物理吸附能、化学吸附能、分子间相互作用能及其抗磨性能的影响。结果表明:同时增强抗磨剂分子在摩擦表面的吸附能力以及抗磨剂分子间结合能力,有利于增强润滑膜的吸附稳定性以及结构稳定性,进而有利于提升抗磨剂的抗磨性能;在抗磨剂分子极性基团附近引入—OH等体积较小的极性基团,可起到增强抗磨剂分子吸附能力以及分子间结合能力的作用。相关抗磨性能评价数据表明引入—OH使抗磨剂的抗磨性能显著提升,与理论研究结果一致。The evaluation data of various fatty acids and their ester derivatives showed that the key factor affecting the anti-wear was the structure of polar groups of the molecules.By molecular simulation method,the effects of polar group structure of anti-wear agent molecule on its physical and chemical adsorption energy,molecular-interaction energy and the anti-wear performance was explored.The results showed that enhancing the adsorption on the friction surface and intermolecular binding energy of the anti-wear agent molecules is beneficial to strengthen the adsorption stability and structural stability of the lubrication film,which helps improving the anti-wear performance of the agents.Introducing small polar groups,such as-OH,near the polar group of anti-wear agent molecule can heighten the adsorption ability and molecular interaction of the anti-wear agent molecules.The anti-wear performance tests proved that after introducing-OH,the anti-wear performance of the agent is significantly increased,which is consistent with the theoretical research results.

关 键 词：抗磨剂 极性基团 抗磨性能 吸附能 分子间相互作用能 

分 类 号：TE624.81[石油与天然气工程—油气加工工程]