The functional monomer (DVE) was synthesized between 1,4,3,3-tetramethyl-1,3-divinylsilazane (DVDZ) and 2,2,3,4,4,4-Hexafluorobutyl methacrylate(EINECS) via Michael addition reaction. Subsequently, The hydroxy acrylic resin secondary dispersion was prepared using methyl methacrylate (MMA) , hydroxyethyl methylacrylate (HEMA), DVE and other monomers as materials, azobisisobutyronitrile (AIBN) as intiator, isopropanol (IPA) as co-solvent and triethylamine (TEA) as neutralizer. The modified 2K-WPU which cured by polyisocyanate and DVE were characterized by means of FTIR, 1H-NMR, TG, XEM and XPS. Moreover，the effect of DVE content on the property of acrylic resin secondary dispersion and 2K-WPU films was investigated.The results showed that when DVE content was 6% (mass fraction)， the cured film had the best comprehensive performance.The characteristic decomposition temperature at 5% and 50% mass loss was 220.9℃ and 438.5℃, the water absorption was only 8.2%, and the water contact angle was 91.5°. The heat resistance，water resistance，acid resistance，alkali resistance and other performance have improved.