The invention belongs to the technical field of negative
oxygen ion exterior wall
coating and provides waterborne forest negative
oxygen ion exterior wall
coating and a preparation method thereof in order to solve the technical problem that the existing exterior wall
coating cannot sustainably release negative
oxygen ions. The exterior wall coating comprises the following raw materials in parts byweight: 0.1-0.3 part of
hydroxyethyl cellulose, 0.1-0.3 parts of a pH
regulator, 0.5-1.0 part of a dispersing agent, 15.0-20.0 parts of
titanium dioxide, 5.0-10.0 parts of ultrafine ground
calcium carbonate, 3.0-5.0 parts of a
water repellent agent, 1.0-2.0 parts of a negative oxygen
ion additive, 0.2-1.0 part of a
mildew preventive, 0.5-1.0 part of a
preservative, 35-45.0 parts of pure acrylic
emulsion, 0.3-0.5 parts of an associated
thickening agent, 1.0-2.0 parts of a film forming additive, 1.5-3.0 parts of a defoaming agent and 13.0-25.0 parts of deionized water. The preparation method comprises the following steps: preparation of
hydroxyethyl cellulose liquid, preparation of defoaming liquid, preparation of negative oxygen ion
mixed solution and exterior wall coating. The exterior wall coating provided by the invention has the characteristics of sustainably releasing negative
oxygen ions and removing peculiar smell of the coating.