Keyboard water paint with high wear resistance and high hardness and preparation method thereof

The invention discloses keyboard water paint with high wear resistance and high hardness and a preparation method thereof. The water paint consists of the following components in parts by weight: 40-60 parts of a film forming matter, 8-15 parts of a film forming auxiliary, 1-4 parts of a bactericide, 2-4 parts of wax powder, 1-3 parts of nano-aluminum oxide, 15-25 parts of pigment and filler and a cosolvent; the cosolvent contains 2-5 parts of a dispersant, 1-3 parts of a pH regulator, 1-4 parts of a defoamer, 1-3 parts of a wetting and leveling agent, 2-5 parts of a thickening agent and 1-2 parts of an adhesion promoter; and counted by percentage by weight, the film forming matter consists of 50-75% of thermoplastic chlorinated polypropylene modified acrylic resin and 25-50% of a thermoplastic hydroxy acrylic acid emulsion. The film forming matter adopted by the invention is chlorinated polypropylene modified acrylic resin, and has the advantages of low VOC, low odor, conformance to the green environmental r