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Water-based coating composition with antibacterial and environment-friendly functions

A water-based paint and composition technology, applied in the field of paint, can solve the problems of antibacterial stability, restrict application, reduce antibacterial properties, etc., and achieve the effects of good antibacterial performance, easy promotion and good compatibility

Inactive Publication Date: 2017-11-10
四川省蓝扬科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the toxicity or high cost of some metal ions with antibacterial ability, the currently widely used antibacterial ions are limited to silver and zinc. Among them, silver ions have the strongest antibacterial ability. From the perspective of antibacterial ability alone, it is an inorganic antibacterial agent. The best choice, and the toxicity of silver is far less than that of zinc, so it is the best choice for inorganic antibacterial agents
There are also some problems with inorganic antibacterial agents: the first is the problem of antibacterial stability
Because most of the inorganic antibacterial agents contain silver ions, they are easily transformed into brown silver oxide or reduced to black elemental silver by ultraviolet catalysis. The discoloration not only reduces their antibacterial properties, but also limits their application to white or light-colored paints.
Secondly, the high cost of using silver in large quantities restricts its application in a wider range
The above two technical problems have seriously restricted the promotion and use of inorganic antibacterial agents, becoming the biggest problem in this industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] The preparation method of nano-diatomite is as follows: put the diatomite in the muffle furnace for calcination, set the temperature at 400-500°C for 2-3 hours, put it into a ball mill after cooling, and grind it into 200-mesh particles, and then Soak in 15-20% carbonic acid solution for 3-4 hours, take it out, wash it with deionized water until neutral, then put it into a muffle furnace for calcination at a temperature of 800-900°C for 2-3 hours, then take it out and grind it. Preparation of nano-diatomaceous earth.

[0024] The preparation method of water-based paint is:

[0025] A Preparation of aqueous dispersion: According to the set weight percentage, mix and stir deionized water, bactericide, wetting agent, dispersant, and defoamer evenly, add nanomaterials and fillers, and disperse evenly at a high speed at 1000-3000rpm to obtain aqueous dispersion;

[0026] B Add the aqueous dispersion obtained in step A into the stirred emulsion or aqueous dispersion resin, ...

Embodiment 1

[0032] A kind of water-based coating composition with antibacterial and environmental protection function of the present embodiment, the raw material of this water-based coating composition comprises by weight: 20 parts of water-based resin dispersion acrylic resin, 0.5 part of antibacterial agent nano silicon dioxide, conventional additive 10 parts Parts, 15 parts of filler calcium carbonate, 40 parts of water, wherein, the conventional additives include coalescent propylene glycol butyl ether, defoamer mineral oil, leveling agent carboxymethyl cellulose, wetting agent, dispersant.

[0033] The water-based paint with antibacterial and environmental protection function that the present embodiment makes is detected through the standard test in the industry, and the results are as follows: the 24-hour bactericidal rate of E. coli reaches 86.7%, and the 24-hour bactericidal rate of E. L.

Embodiment 2

[0035] A kind of water-based coating composition with antibacterial and environmental protection function of the present embodiment, the raw material of this water-based coating composition comprises by weight: 25 parts of water-based resin dispersion polyurethane resin, 1 part of antibacterial agent nano-titanium dioxide, 15 parts of conventional additives, 20 parts of filler talcum powder, 45 parts of water, wherein, the conventional additives include film-forming aid propylene glycol methyl ether acetate, defoamer organic polyether ester, leveling agent carboxymethyl cellulose, wetting agent, and dispersant.

[0036] The water-based paint with antibacterial and environmental protection function that present embodiment makes is detected through industry standard test, and result is as follows: 24 hours sterilization rate reaches 85.9% to E. L.

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PUM

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Abstract

The invention discloses a water-based coating composition with antibacterial and environment-friendly functions. The water-based coating composition comprises the following raw materials in parts by weight: 20-30 parts of a water-based resin dispersion, 0.5-3 parts of an antibacterial agent, 10-20 parts of a conventional additive, 15-25 parts of a filler and 40-50 parts of water, wherein the conventional additive comprises a film-forming auxiliary agent, a defoaming agent, a leveling agent, a wetting agent and a dispersing agent; the antibacterial agent is one or a combination of nanometer silicon dioxide, nanometer titanium dioxide and nanometer zinc oxide. The prepared water-based coating composition has relatively low volatile organic content and a good antibacterial property, and is simple in preparation process and low in cost.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a water-based coating composition with antibacterial and environmental protection functions. Background technique [0002] Water-based coatings are coatings that use water as a dispersion medium and thinner. Compared with organic solvent-based coatings, water-based coatings save a lot of organic material resources, greatly reducing the pollution of the atmosphere caused by the volatilization of organic solvents in coatings and the pollution during construction. Fire hazard. Water is an extremely abundant resource on the earth. It is easy to use and low in cost. When used as a solvent in paint, it will not cause damage to water resources or less. Therefore, the water-based coating not only reduces the emission of volatile organic solvents, but also saves resources and energy, and is convenient for transportation and storage. With the enhancement of people's awareness of environm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D175/04C09D163/00C09D167/00C09D5/14C09D7/12
CPCC09D133/00C08K3/34C08K3/346C08K3/36C08K2003/2241C08K2003/2296C08K2003/265C08K2201/011C08K2201/014C09D5/14C09D163/00C09D167/00C09D175/04
Inventor 王旭东
Owner 四川省蓝扬科技有限公司