采用菜籽油、巯基乙醇、丙烯酰氯为原料，通过巯基 -烯加成、酯化等一系列反应合成了菜籽油基多元烯化合物，使之与不同官能度的硫醇单体固化成 UV固化涂膜，探究了硫醇单体对 UV固化涂膜性能的影响。并探究了三羟甲基丙烷三丙烯酸酯（ TMPTA）对菜籽油基 UV固化涂膜性能的
影响。通过核磁（ 1 H NMR）、红外（ FT-IR）、热重分析（ TGA）、动态机械分析（ DMA）对单体结构和涂膜的性能进行了表征。结果表明：随着硫醇单体官能度增加， UV固化涂膜的交联密度增大，铅笔硬度、模量、拉伸强度、断裂伸长率、玻璃化转变温度也随之增大。另外，实验结果还证实了 TMPTA作活性稀释剂能提高菜籽油基 UV固化涂膜的机械性能和热稳定性。
In this paper，rapeseed oil，mercaptoethanol and acryloyl-chloride were usedas raw materials to synthesize rapeseed oil-based polyene via mercapto-vinyl addition andesterification reactions with different functional thiol monomers. The effect of thiol monomers on the performance of UV-cured film was studied. In addition，the effect of trimethylol propane triacrylate（TMPTA） on the properties of rapeseed oil-based UV-cured film was alsoinvestigated. The structure of the monomer and the properties of the film were characterizedby 1 H NMR，FT-IR，TGA and DMA. The results showed that as the increase of the fuctionalityof thiol in the monomers，the crosslink density of the UV-cured film increased，the pencil hardness，modulus，tensile strength，elongation at break，and glass transition temperature of the UV-cured film were also increased. On the other hand，the experimental results also confirmed that TMPTA，as a reactive diluent，could improve the mechanical properties andthermal stability of rapeseed oil-based UV-cured film.
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