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

A multi-functional and composite technology, applied in the coating field, can solve the problems of re-release, short service life of primary use, and secondary pollution after use, and achieve the effects of long service life, good sterilization and decomposition effect, and low cost

Inactive Publication Date: 2017-07-07
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 decor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A preparation method for indoor and outdoor formaldehyde-removing, odor-removing and anti-bacterial mildew composite coatings:

[0017] (1) Take 50g of nano-sized anatase titanium dioxide, 75g of micron-sized porous diatomaceous earth, 75g of micron-sized activated carbon, and 40g of micron-sized calcium carbonate powder, and then grind them by high-speed ball milling under the condition of avoiding light (ultraviolet UV) 4 Sieve after hours (through a 150-mesh sieve) to obtain mixed micro-nano powder;

[0018] (2) After mixing, grinding and sieving, add the mixed micro-nano powder to 220g of a two-component epoxy resin that can be thermally cured at room temperature, and then add 20g of surfactant polyvinyl alcohol and 20g of dispersant polyvinyl alcohol. Add additives such as acrylate ammonium salt, stir for 4 hours under the condition of avoiding light (ultraviolet UV), and then stand still for 1 hour to prepare a composite coating.

Embodiment 2

[0020] A preparation method for indoor and outdoor formaldehyde-removing, odor-removing and anti-bacterial mildew composite coatings:

[0021] (1) Take 50g of nano-sized anatase titanium dioxide, 100g of micron-sized porous diatomaceous earth, 50g of micron-sized activated carbon, and 35g of micron-sized calcium carbonate powder and mix them with high-speed ball milling under the condition of avoiding light (ultraviolet UV) 4 Sieve after hours (through a 150-mesh sieve) to obtain mixed micro-nano powder;

[0022] (2) After mixing, grinding and sieving, add the mixed micro-nano powder to 230g of binder two-component polyurethane, then add 15g of surfactant polyethylene glycol and 20g of dispersant polyvinyl alcohol and other additives, Stir for 4 hours under the condition of avoiding light (ultraviolet UV), and then stand still for 1 hour to prepare a composite coating.

Embodiment 3

[0024] A preparation method for indoor and outdoor formaldehyde-removing, odor-removing and anti-bacterial mildew composite coatings:

[0025] (1) Take 40g of nano-sized anatase titanium dioxide and 100g of micron-sized porous diatomaceous earth, mix them, grind them by high-speed ball milling for more than 4 hours under the condition of avoiding light (ultraviolet UV), and then sieve (through a 150-mesh sieve);

[0026] (2) After grinding and sieving, the micro-nano powder is added to 240g of binder, 10g of silicone surfactant and 30g of dispersing agent mixed with two-component epoxy resin and two-component polyurethane in equal proportions at room temperature. After adding additives such as sodium silicate, stir at a medium speed for more than 4 hours under the condition of avoiding light (ultraviolet UV), and then let it stand for 1 hour to obtain a mixture;

[0027] (3) Mix 40g of micron-grade bamboo charcoal or activated carbon and 40g of micron-grade calcium carbonate p...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D175/04C09D5/14C09D7/12
CPCC08K2201/011C08L2205/03C09D5/14C09D163/00C09D175/04C09D7/61C08L29/04C08K13/04C08K7/26C08K2003/2241C08K3/04C08K2003/265C08L75/04C08L63/00
Inventor 张英
Owner SUZHOU UNIV
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