Waterborne UV curable polyurethane acrylate (PUA)/epoxy acrylate (EA）hybrid emulsion with anomalistic core-shell structure was prepared from waterborne PUA which was used as emulsor and EA resin by the method of phase inversion.FTIR was used to monitor the structure of PUA resin during its synthesis process and the hybrid emulsion before and after UV curing.The test results by transmission electron microscopy (TEM）showed that the particles of emulsion had an anomalous core-shell shape structure

and the particles exhibited different structures with different EA contents.The effects of —COOH content on the system during the process of phase inversion

the emulsification ability of PUA prepolymer

the abilities of the emulsions and its films were investigated.It was shown that the viscosity and electrical conductivity of the system had similar changing trend of change.The biggest value of them both increased and appeared later when —COOH content increased.The emulsification ability of PUA prepolymer also increased with increasing —COOH content.When the content was more than 2.3%

however

the emulsification ability changed little.Furthermore

the higher the —COOH content was

the smaller the particle size of emulsions

the more transparent the appearance

the bigger the viscosity of system

the better the stability of emulsions

and the higher the hardness of UV cured films.The hygroscopic coefficient of UV cured film increased

then decreased and again increased with increasing —COOH聚氨酯丙烯酸酯

环氧丙烯酸酯

不规则核壳结构

复合乳液