Multifunctional composite coating with functions of removing formaldehyde, removing foreign odor and preventing bacterial mildewing and preparation method thereof

Abstract

The invention discloses a multifunctional composite coating with functions of removing formaldehyde, removing foreign odor and preventing bacterial mildewing and a preparation method thereof. The preparation method comprises the following steps of adding powder into a resin adhesive; adding an additive, and stirring, so as to obtain the multifunctional composite coating with the functions of removing formaldehyde, removing foreign odor and preventing bacterial mildewing, wherein the powder contains nanometer anatase titanium dioxide, micrometer porous diatomite, micrometer adsorbing carbon (bamboo carbon or activated carbon), and micrometer calcium carbonate; the additive contains a surfactant, a dispersant and the like. The multifunctional composite coating has the advantages that the functions of adsorbing, fixing and removing formaldehyde, removing foreign odor and preventing bacterial mildewing are realized both at daytime and at night without light; the synergistic function of removing and decomposing formaldehyde, foreign odor and bacterial mildewing is realized under the action of daytime sunlight or artificial natural light source; the multifunctional composite coating can be used in rooms, and the formaldehyde, foreign odor and bacterial mildewing can also be removed in public corridors, halls and part of outdoor areas; the sterilizing and decomposing effect is good, the cost is low, the service life is long, and the like.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a multifunctional composite coating suitable for indoor and outdoor removal of formaldehyde, odor removal and anti-bacterial mildew and a preparation method thereof. Background technique [0002] At present, the elimination of formaldehyde, TVOCs, bacteria, mold, etc. inside and outside buildings mainly relies on single-function methods, such as photocatalyst catalytic technology to make sprays or activated carbon physical adsorption methods, and the use is only started after the building decoration is completed, which cannot be integrated with the building. Combined during decoration, improper use will cause secondary pollution or re-release after adsorption. At the same time, the release period of TVOCs (total volatile organic compounds) such as formaldehyde is as long as 3 to 15 years, which will cause problems such as a short service life of the currently used me...

AI Technical Summary

Problems solved by technology

[0002] At present, the elimination of formaldehyde, TVOCs, bacteria, mold, etc. indoors and outdoors in buildings mainly relies on single-function methods, such as photocatalyst catalytic technology to make sprays or activated carbon physical adsorption methods, and the use is only started after the building decoration is completed, which cannot be integrated with the building. Combined during decoration, improper use will cause secondary pollution or re-release after adsorption and other troubles

At the same time, the release period of TVOCs (total volatile organic compounds) such as formaldehyde is as long as 3 to 15 years, which will cause problems such as short service life and frequent replacement, increased inconvenience of use and multiple replacement costs of the currently used methods.