目的 研究单体对UV-LED固化光油性能的影响，并为正确选择单体配制印刷适性良好的UV-LED固化光油提供理论依据。方法 主要通过控制预聚物、光引发剂和助剂的种类和比例不变，加入相同数量的不同种类的单体，分别制备光油样品，测试光油的粘度、表面张力和固化速度以及光油固化膜的附着力和柔韧性。结果 不同单体对UV-LED固化光油的性能有不同的影响，采用复配单体，TMPTA和HDDA的质量比为3∶7时，UV-LED固化光油综合性能优异，符合市场上对光油的要求。结论 单体对UV-LED固化光油的粘度和固化速度影响较大，对光油固化膜的附着力和柔韧性也有很大的影响。

The work aims to study the effects of monomers on UV-LED curing varnish performance and provide a theoretical basis for correctly selecting UV-LED curing varnish with good printing adaptability. Through controlling the kinds and unchanged proportion of prepolymer, photoinitiators and promoter and then adding the same amount of monomers of different types, the varnish samples were prepared. The viscosity, surface tension, curing rate of varnish and the adhesion and flexibility of varnish curing film were tested. Different monomers had different effects on performances of UV-LED curing varnish. UV-LED curing varnish showed the better comprehensive performance when the ratio of compound monomers was TMPTA: HDDA=3∶7, which conformed to the requirements of the market for varnish. Monomers have a great influence on the viscosity and curing rate of UV-LED curing varnish, and also have a significant influence on the adhesion and flexibility of the varnish curing film.