UV curable waterborne polyurethane (UVWPU) has been gained rapidly development in recent years because of its non-flammable, non-toxic, friendly environment, fast solidification, resistance to organic solvents and excellent mechanical properties, which have been found in wide applications such as fast drying protective coatings, printing inks and adhesives [1].But they have some inferior properties such as low heat resistance and weak tensile strength if the external temperature exceeds 80C [2].