Special water-borne rust-associated anti-rust coating having antibacterial and antifungal functions and applied to pump valve

The invention discloses a special water-borne rust-associated anti-rust coating having antibacterial and antifungal functions and applied to a pump valve. The special water-borne rust-associated anti-rust coating is prepared from raw materials in parts by weight as follows: 65-70 parts of methyl methacrylate, 60-65 parts of styrene, 0.5-0.6 parts of ammonium persulfate, 4-5 parts of phosphate ester monomers, 20-24 parts of deionized water, 2-3 parts of SDS (sodium dodecyl sulfate), 35-40 parts of glass flakes, 1-1.2 parts of a silane coupling agent KH560, 30-35 parts of an ethanol solution with the concentration of 75wt%, 40-43 parts of a sodium hydroxide solution with the concentration of 10wt%, 2-3 parts of isopropanol, 3-4 parts of catechol, 9-11 parts of nano-zinc oxide, 1-1.2 parts of dimethyl fumarate, 2-3 parts of absolute ethyl alcohol, 3-4 parts of a silver loaded nano-zirconium phosphate antimicrobial agent, 1.5-2 parts of petroleum sodium sulfonate, 19-21 parts of calcium carbonate and proper amount of water. The coating can be directly sprayed to a pump valve material, substrate surface treatment is not needed, and the coating has excellent antibacterial and antifungal performance and is applicable to the pump valve in a humid environment.