Water-based light-cured resin as well as preparation method and application thereof

The invention discloses water-based light-cured resin as well as a preparation method and application thereof. Firstly, acrylic acid and styrene are polymerized to form a resin main chain, then glycidyl methacrylate is connected into a molecular structure in a ring opening mode, and finally the water-based light-cured resin is prepared through neutralization. No emulsifier is needed in the reaction process, and the whole polymerization reaction is carried out in a water phase, so that the possible negative influence on the coating due to the migration of the small molecule emulsifier is avoided. The obtained water-based light-cured resin has a relatively high emulsifying effect, can effectively emulsify oily UV system raw materials, can form a stable emulsion system, can reduce special raw materials for a water-based UV system, can reduce the coating cost, can expand the range of raw material types suitable for the water-based UV system, and enables the formula design to be more flexible so as to meet more ap