2results about How to "Exert antibacterial effect" patented technology

The invention relates to the technical field of feed additives, in particular to a protective bacteriostatic acidifier and a preparation method thereof. The acidifying agent is prepared by the method. The method comprises the following steps: crushing benzoic acid to a target particle size; uniformly mixing fumaric acid with benzoic acid with a target particle size to obtain a mixture; uniformly mixing the mixture, an auxiliary agent and water to prepare prefabricated particles; rolling the prefabricated particles to obtain spherical particles; carrying out drying treatment on the spherical particles; screening the dried spherical particles, and selecting the spherical particles with the required particle size as pellet cores; and coating the pellet core with the hot-melted coating material to prepare the protective antibacterial acidifying agent. The problem that the titer of benzoic acid cannot be improved due to the fact that existing coated benzoic acid is not protected by other acidifying agents can be solved.

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.