viscosity index improver

The result shows: the main factors influencing low-temperature dynamic viscosity of oil products are base oil, viscosity index improver and functional additive, among which the base oil has the biggest influence.

结果表明：影响油品低温动力粘度的主要因素是基础油、粘度指数改进剂及功能添加剂，其中基础油的影响最大。

preparation of the ethylene-propylene copolymer viscosity index improver for lubricating oil

润滑油用乙丙共聚物粘度指数改进剂的制备

Ratio of poly-sulfide rubber and activated viscosity index improver to epoxy was determine and discussed.

讨论了聚硫液体橡胶、活性增粘剂与环氧树脂的比例对性能的影响.

synthesis of ethylene propylene copolymer used as viscosity index improver for lubricating oil

用于润滑油改性的乙丙共聚物的合成

Study on relationship between chemical structure of viscosity index improver and its performance

粘度指数改进剂结构与性能之间的关系

serviceability and development of viscosity index improver

润滑油粘度指数改进剂的使用性能与发展

finally, selection methods of viscosity index improver through diesel jet nozzle and long time fzg experiments has been suggested.

提出筛选粘度指数改进剂要经过柴油喷嘴和长时间FZG测试的建议。