| abstract |
The invention discloses a water-based epoxy modified resin and a preparation method thereof, a coating and a preparation method thereof. The water-based epoxy modified resin comprises the following raw materials in parts by weight: 15-25 parts of epoxy resin, diethylene glycol 5-7 parts of butyl ether, 10-15 parts of aqueous polyurethane dispersion, 40-50 parts of ethylene glycol butyl ether, 4-8 parts of trimethylolpropane, 2-10 parts of acrylic acid, 5-10 parts of butyl acrylate, 8-15 parts of hydroxyethyl acrylate, 5-15 parts of methyl methacrylate, 1-2 parts of polymerization initiator, and 10-15 parts of isopropanol. By adopting the invention, only one kind of paint can be used to meet the requirements of the paint in the light and medium anti-corrosion field, and at the same time, it can overcome the inconvenience of the traditional multi-coat matching in the field, and can replace the original situation of mixing multiple paints, and it is resistant to salt spray and corrosion. Anti-aging and other comprehensive properties are good. |