本文通过对在不同的基础油中添加不同种类和含量的黏度指数改进剂而配制出的调和油进行试验,分析了添加剂对基础油黏温特性的改性能力,总结出试验所用的各种黏度指数改进剂对增加润滑油黏度和改善基础油的黏温特性中既有效又经济的百分比含量,以此作为在配制润滑油时选择添加剂种类和添加量的参考。试验表明黏度指数改进剂的增黏能力随分子量的增大而增强,低黏度基础油对添加剂的改性能力较强。 In this paper, different kinds of base oils with different types and content of viscosity index improver were added to prepare the blended oil test, the additives on the base oil viscosity-temperature characteristics of the modified ability to sum up the test used in a variety of viscosity Index improvers are both effective and economical in increasing the viscosity of a lubricating oil and improving the viscosity-temperature properties of the base oil as a reference for selecting the type and amount of the additive when formulating the lubricating oil. Experiments show that the viscosity index improver tackifier capacity increases with the increase of molecular weight, low viscosity base oil modification of the additive ability.