Waterborne polyurethane floor paint and preparation process thereof

The invention discloses a waterborne polyurethane floor paint and a preparation process of the waterborne polyurethane floor paint, and relates to the technical field of floor paints. The coating is prepared from the following components in parts by weight: 60-75 parts of polyurethane resin, 15-20 parts of hydroxyethyl methylacrylate, 3-15 parts of modified graphene oxide, 6-13 parts of hydroxyethyl cellulose, 15-25 parts of a curing agent, 1-3 parts of a dispersing agent, 0.5-2 parts of a flatting agent, 0.5-1 part of a defoaming agent, 3-8 parts of pigment and 10-25 parts of deionized water. According to the floor paint, modified graphene oxide serves as filler and is mixed with polyurethane resin, hydroxyethyl methylacrylate and a curing agent in water, a hydrogen bond or net-shaped cross-linked blended polymer is formed through mutual penetration and entanglement, and the floor paint has good wear resistance and weather resistance and can protect the surface layer of a coated floor structure for a long ti