分子结构和拓扑结构选择性调控PMA型添加剂的性能

摘要/Abstract

摘要： 黏度是润滑油分级与选用的重要指标，合适的黏度是充分润滑的保证。在众多的润滑油添加剂中，降凝剂和黏度指数改进剂被认为是调节油品黏度、确保油品具有出色低温流动性和卓越黏温性能的关键。甲基丙烯酸酯类聚合物（PMA）具有灵活的结构可调变性和较强的合成工艺适应性，在降凝剂和黏度指数改进剂领域占有重要的地位。基于此，综述了PMA添加剂在改善润滑油低温流动性和黏温性能方面的作用机理，重点讨论和总结了PMA分子结构和拓扑结构对其产品性能的影响机制，展望了PMA添加剂未来的发展方向。

关键词: 聚甲基丙烯酸酯, 润滑油, 添加剂, 分子结构, 拓扑结构

Abstract: Viscosity is a crucial parameter for lubricant classification and selection. Proper viscosity is the guarantee of sufficient lubrication. Among various oil additives, pour point depressants and viscosity index improvers are considered to be the key to adjust oil viscosity and to ensure excellent low-temperature fluidity and excellent viscosity-temperature performance. Polymethacrylates (PMA) play an essential role in the fields of pour point depressants and viscosity index improvers because of their flexible structural flexibility and strong adaptability to synthetic processes. The mechanisms of PMA additives in improving low-temperature fluidity and viscosity-temperature performance were elucidated, the effect of PAM molecular structure and topological structure on the properties of PMA products was discussed, and the future development direction of PMA additives was prospected, which had an important guiding role in the development of universal and efficient PMA additives.

Key words: polymethacrylate, lubricating oil, additives, molecular structure, topological structure

聂凤敏张耀鱼鲲刘乐乐苏朔. 分子结构和拓扑结构选择性调控PMA型添加剂的性能[J]. 石油炼制与化工, 2024, 55(4): 139-150.

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