Preparation of the photosensitive resin with urethane acrylate as prepolymer and its properties
A photosensitive resin was prepared with hexafunctional urethane acrylate (B-618),trifunctional urethane acrylate (DH-317),tripropylene glycol acrylate (TPGDA)and 1-hydroxy cyclohexyl phenyl ke-tone (Irgacure184).The photosensitive property of the photosensitive resin was investigated by utilizing the gel yield method.Meanwhile,the mechanical properties of the UV-cured films were studied.The results showed that the optimum formulation was B-618 mass factor was 28%,DH-317 mass factor was 43%, TPGDA mass factor was 25% and Irgacure184 mass factor was 4%,and the flexible,impact strength and tensile strength of the UV-cured films were good.
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