1results about How to "Exert antibacterial effect" patented technology

The present application belongs to the technical field of building coatings, and relates to a dual formaldehyde-removing and antibacterial coating and a preparation method thereof. The formaldehyde-removing and antibacterial coating prepared by the method can effectively remove formaldehyde under the action of ultraviolet light catalyst, and at the same time, the amino group can react with the negative charge on the bacterial cell membrane to cause the integrity of the bacterial cell membrane to be destroyed, so that the permeability of the bacterial cell membrane is changed, the cell contents are leaked, and finally the cell death is caused. The polyethylene imine grafted sodium alginate is introduced into the surface of titanium dioxide, so that the high adsorption performance of the alginate on formaldehyde and the dual formaldehyde-removing and antibacterial effect are utilized, and the dispersibility of the filler in the coating matrix is improved through the chemical bond and action between the amino group carried by the polyethylene imine and the epoxy resin. Therefore, the agglomeration problem of the inorganic filler is reduced, the formaldehyde-removing and antibacterial performance of the coating is improved, and the efficient and long-lasting application of the functional coating in the natural indoor environment is realized.