CN114958058A - Mildew-proof antibacterial coating and preparation method thereof - Google Patents

Mildew-proof antibacterial coating and preparation method thereof Download PDF

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Publication number
CN114958058A
CN114958058A CN202210696343.0A CN202210696343A CN114958058A CN 114958058 A CN114958058 A CN 114958058A CN 202210696343 A CN202210696343 A CN 202210696343A CN 114958058 A CN114958058 A CN 114958058A
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mildew
proof
carbon
proof antibacterial
antibacterial
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张兆国
李儒光
刘方
谭宇昂
王蕴
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Dongguan Vanke Architectural Technology Research Co Ltd
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Dongguan Vanke Architectural Technology Research Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/14Paints containing biocides, e.g. fungicides, insecticides or pesticides
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
    • C09D7/63Additives non-macromolecular organic
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/011Nanostructured additives
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Plant Pathology (AREA)
  • Paints Or Removers (AREA)

Abstract

The invention provides a mildew-proof antibacterial coating and a preparation method thereof, wherein the mildew-proof antibacterial coating comprises main body water-based resin, pigment and filler, mildew-proof antibacterial active substances, an auxiliary agent and deionized water, the mildew-proof antibacterial active substances comprise metal ions and carbon-based particles, and the carbon-based particles are composed of at least one of intrinsic single-layer graphene, carbon fibers and carbon nano tubes. According to the invention, metal ions and carbon-based particles are mixed to be used as mildew-proof and antibacterial effective substances, and the mixture is mixed with main body water-based resin, pigment filler and auxiliary agent to prepare the coating, so that the full-spectrum mildew-proof and antibacterial effects of biological pollutants such as mildew, bacteria and the like in a building can be realized while the color of the coating is ensured.

Description

Mildew-proof antibacterial coating and preparation method thereof
Technical Field
The invention relates to the field of building coatings, in particular to a mildew-proof antibacterial coating and a preparation method thereof.
Background
Under proper conditions, mold, bacteria and the like existing in the building can quickly proliferate on the surfaces of wall surfaces, furniture, household appliances and other articles. After entering the air, these fungi, bacteria and spores thereof can enter the human body through the respiratory system, skin contact and other ways, causing a series of health problems. It is well known that the toxicity of the mold is 68 times that of arsenic, and the mold is classified as a class 1 carcinogen by the world health organization. With the growing concern of consumers on indoor air quality, the prevention and control of biological pollutants represented by mold and bacteria is an important measure for improving the quality of housing.
According to related researches, inhibition mechanisms for propagation of biological pollutants such as mold and bacteria can be divided into four types: denature proteins, interfere with their genetic mechanisms, interfere with cell membranes, and interfere with the activities of their intracellular enzymes. The main countermeasure for biological pollutants such as mold, bacteria and the like existing in the building is to use the mildew-proof antibacterial functional coating. For the mildew-proof and antibacterial functional coating, a method of adding a mildew-proof antibacterial agent is generally adopted to construct mildew-proof and antibacterial efficacy, and for example, heterocyclic compounds are common mildew-proof agents. It should be noted that the type and amount of the antifungal and antibacterial agent are decisive for the antifungal and antibacterial effects such as the antifungal and antibacterial spectrum of the coating with the antifungal and antibacterial functions. In engineering practice, in view of the inherent property of a specific antifungal and antibacterial agent, and the addition amount needs to be higher than the Minimum Inhibitory Concentration (MIC) of the antifungal and antibacterial agent, if full-spectrum antibacterial is to be achieved, a plurality of different types of antifungal and antibacterial agents need to be added, which is not only costly, but also may cause new pollution.
In addition, the electrons or the current can make the high-energy substances such as the high molecules of the mold and the bacteria in a high-energy state, so that the molecular structure of the substances is induced to change, and the aim of killing the mold and the bacteria is fulfilled. The method adopting electrons and current has universality for inhibiting and killing the mildew and bacteria. Methods for generating electrons and current such as photocatalyst, galvanic cell, etc., wherein the method of photocatalyst is limited by the type of photocatalyst used and the illumination condition of the application environment; the primary battery method can output current efficiently and continuously, but the primary battery cannot be directly used for inhibiting and killing mold and bacteria on the surfaces of walls in buildings, furniture, household appliances and other articles.
Disclosure of Invention
The invention aims to solve the technical problems that the single mildew-proof antibacterial agent cannot realize full-spectrum antibacterial, the use of a photocatalyst mode is limited, and a primary battery mode cannot be directly used, and provides a mildew-proof antibacterial coating and a preparation method thereof.
The technical scheme for solving the technical problems is to provide the mildew-proof antibacterial coating, which comprises main body water-based resin, pigment and filler, a mildew-proof antibacterial effective substance, an auxiliary agent and deionized water, wherein the mildew-proof antibacterial effective substance comprises metal ions and carbon-based particles, and the carbon-based particles are composed of at least one of intrinsic single-layer graphene, carbon fibers and carbon nano tubes.
As a further improvement of the invention, the mass parts of the main aqueous resin, the pigment and filler, the mildew-proof antibacterial active substance, the auxiliary agent and the deionized water in the mildew-proof antibacterial coating are 12-25: 30-50: 0.6-1.5: 0.4-1.5: 22 to 57.
As a further improvement of the invention, the mass parts of the main aqueous resin, the pigment and filler, the mildew-proof antibacterial effective substance, the auxiliary agent and the deionized water in the mildew-proof antibacterial coating are 17-20: 38-42: 0.9-1.2: 0.8-1.1: 35.7 to 43.3.
As a further improvement of the invention, the carbon-based particles are composed of intrinsic single-layer graphene and carbon fibers, and the mass part ratio of the metal ions, the intrinsic single-layer graphene and the carbon fibers in the mildewproof antibacterial effective substance is 100: 1-15: 2-25; alternatively, the first and second liquid crystal display panels may be,
the carbon-based particles are composed of intrinsic single-layer graphene and carbon nano tubes, and the mass part ratio of metal ions, the intrinsic single-layer graphene and the carbon nano tubes in the mildew-proof antibacterial effective substance is 100: 1-15: 2 to 25.
As a further improvement of the invention, the carbon-based particles are composed of intrinsic single-layer graphene and carbon fibers, and the mass part ratio of the metal ions, the intrinsic single-layer graphene and the carbon fibers in the mildewproof antibacterial effective substance is 100: 5-11: 10-17; alternatively, the first and second electrodes may be,
the carbon-based particles are composed of intrinsic single-layer graphene and carbon nano tubes, and the mass part ratio of metal ions, the intrinsic single-layer graphene and the carbon nano tubes in the mildew-proof antibacterial effective substance is 100: 5-11: 10 to 17.
As a further improvement of the invention, the mildew-proof and antibacterial effective substance further comprises capsaicin, and the mass ratio of the capsaicin to the metal ions is 5-40: 100.
as a further improvement of the invention, the intrinsic single-layer graphene has a size of 5-20 μm, and the carbon fibers and the carbon nanotubes have a diameter of 20-60 nm and a length of 5-20 μm.
As a further improvement of the invention, the main aqueous resin can be one or more of styrene resin, acrylic resin, silicone-acrylic resin, aqueous polyurethane resin, aqueous fluorocarbon resin and the like;
the metal ions are one or more of copper ions, silver ions, iron ions and rare earth elements.
The invention also provides a preparation method of the mildew-proof antibacterial coating, which comprises the following steps:
A. preparing an aqueous solution of the mildew-proof antibacterial active substance;
B. mixing and stirring main body water-based resin, pigment and filler, aqueous solution of mildew-proof antibacterial active substance, auxiliary agent and deionized water to form the mildew-proof antibacterial coating.
As a further improvement of the invention, the mildew-proof antibacterial coating is formed by mixing and stirring the main body water-based resin, the pigment and filler, the aqueous solution of the mildew-proof antibacterial effective substance, the auxiliary agent and deionized water, and comprises the following components:
b1, adding the main aqueous resin into the aqueous solution of the mildew-proof and antibacterial active substance, and fully stirring;
b2, continuously adding the auxiliary agent, and fully stirring;
b3, slowly adding the pigment and the filler, and fully stirring to obtain the mildewproof antibacterial coating.
The invention has the following beneficial effects: the metal ions and the carbon-based particles are mixed to be used as the mildew-proof antibacterial active substance, and the mildew-proof antibacterial active substance, the main body water-based resin, the pigment filler and the auxiliary agent are used for preparing the coating, so that the full-spectrum mildew-proof antibacterial effect of biological pollutants such as mildew, bacteria and the like in a building can be realized while the color of the coating is ensured.
Drawings
FIG. 1 is a schematic flow chart of a method for preparing a mildew-proof antibacterial coating provided by an embodiment of the invention;
FIG. 2 is a photograph of a surface of an object using a mold and bacteria resistant coating provided by an embodiment of the present invention at 56 days;
fig. 3 is a photograph of the surface of an object using a conventional mildewproof and antibacterial latex paint at 56 days.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention provides a mildew-proof antibacterial coating which can be applied to wall surfaces, furniture surfaces, electric appliance surfaces and the like in buildings and can realize the full-spectrum mildew-proof antibacterial effect of the wall surfaces, the furniture surfaces, the electric appliance surfaces and the like. The mildew-proof antibacterial coating comprises main body water-based resin, pigment and filler, mildew-proof antibacterial effective substances, an auxiliary agent and deionized water, wherein the mildew-proof antibacterial effective substances comprise metal ions and carbon-based particles, and the carbon-based particles are composed of at least one of intrinsic single-layer graphene, carbon fibers and carbon nano tubes.
Because cell walls and cell membranes of mould, bacteria and the like are composed of phospholipid bimolecular membranes carrying negative charges, in the mildew-proof antibacterial coating, metal ions take common copper ions as an example, nano copper ions with positive charges and bacteria with negative charges are attracted by charges to enable the nano copper ions to be in contact with the bacteria and the like, and then the nano copper ions enter cells of the bacteria, so that the cell walls of the bacteria are broken, cell sap flows out, and the bacteria are killed; meanwhile, the nano copper ions entering the cells can react with protein enzyme and the like in the bacterial cells, so that the enzyme is denatured and inactivated, and the bacteria and the like are killed. And the carbon-based particles such as intrinsic single-layer graphene, carbon fiber and carbon nano tube can activate metal ions by means of ionic pi bonds between the carbon-based particles and metal ions such as copper ions, so that the concentration of effective metal ions in a local range can be increased by 2 orders of magnitude, and the mildew-proof and sterilization effects are remarkably improved.
Meanwhile, when mould and bacteria permeate into the coating, the carbon-based particles in the mould-proof antibacterial coating can penetrate through cell walls of the mould and the bacteria through physical action to destroy cell structures; meanwhile, metal ions can enter the cell through the damaged cell wall to damage the normal metabolism of mould and bacteria, so that the effects of mould prevention and sterilization are achieved.
The damage process to the mould and bacteria cells is effective to the mould and bacteria in the whole spectrum range, so that the whole spectrum of mould and bacteria can be prevented without independently configuring corresponding mould and bacteria prevention and control agents for each kind of mould and bacteria.
In one embodiment of the present invention, the main aqueous resin may be one or more of styrene resin, acrylic resin, silicone-acrylic resin, aqueous polyurethane resin, aqueous fluorocarbon resin, etc., and during the film formation process of the mildew-proof antibacterial coating, the main aqueous resin may undergo a chemical crosslinking reaction to form a network-shaped crosslinked paint film; pigment and/or filler can be used as the pigment and/or filler, for example, in order to ensure that the prepared coating has good film coating effect, the pigment can be titanium dioxide with better covering power and aging resistance, and the filler can be one or more of calcium carbonate, calcined kaolin and talcum powder; the auxiliary agent can adopt an aqueous auxiliary agent, and specifically can comprise one or more of a defoaming agent, a dispersing agent, a thickening agent, a wetting agent and the like.
Specifically, in the mildew-proof antibacterial coating, the mass part ratio of main body water-based resin, pigment and filler, mildew-proof antibacterial effective substances, auxiliary agents and deionized water is 12-25: 30-50: 0.6-1.5: 0.4-1.5: 22 to 57. Preferably, the mass part ratio of the main body water-based resin, the pigment and filler, the mildew-proof antibacterial active substance, the auxiliary agent and the deionized water is 17-20: 38-42: 0.9-1.2: 0.8-1.1: and when the content is 35.7-43.3, the comprehensive performance of the mildew-proof antibacterial coating is better.
In one embodiment of the invention, the carbon-based particles are composed of intrinsic single-layer graphene and carbon fibers, wherein the intrinsic single-layer graphene is 5-20 μm in size, the carbon fibers are 20-60 nm in diameter and 5-20 μm in length, the metal ions can be one or more of copper ions, silver ions, iron ions and rare earth elements, and the mass part ratio of the metal ions, the intrinsic single-layer graphene and the carbon fibers in the mildewproof and antibacterial active substance is 100: 1-15: 2 to 25. Preferably, the carbon-based particles are composed of intrinsic single-layer graphene and carbon fibers, and the mass part ratio of the metal ions, the intrinsic single-layer graphene and the carbon fibers in the mildewproof antibacterial effective substance is 100: 5-11: 10-17, and at the moment, the mildew-proof antibacterial coating has a good mildew-proof antibacterial effect.
Or the carbon-based particles are composed of intrinsic single-layer graphene and carbon nano tubes, wherein the size of the intrinsic single-layer graphene is 5-20 microns, the diameter of each carbon nano tube is 20-60 nm, the length of each carbon nano tube is 5-20 microns, metal ions can be one or more of copper ions, silver ions, iron ions and rare earth elements, and the mass part ratio of the metal ions, the intrinsic single-layer graphene and the carbon nano tubes in the mildew-proof and antibacterial active substance is 100: 1-15: 2 to 25. Preferably, the mass part ratio of the metal ions, the intrinsic single-layer graphene and the carbon nano tubes in the mildew-proof antibacterial effective substance is 100: 5-11: 10-17, the mildew-proof antibacterial coating has a good mildew-proof antibacterial effect.
And because the content of the carbon-based particles in the mildew-proof antibacterial coating is low, the color of the coating is not influenced.
In addition, the mildew-proof antibacterial active substance can also comprise capsaicin, the capsaicin can realize a specific mildew-proof antibacterial spectrum by means of biological mildew prevention, and the mass ratio of the capsaicin to the metal ions is 5-40: 100. the killing effect on specific mould and bacteria can be enhanced by adding the capsaicin.
Referring to fig. 1, a method for preparing the above-mentioned mold-proof and antibacterial coating according to an embodiment of the present invention specifically includes:
step S1: preparing the aqueous solution of the mildew-proof antibacterial active substance. Specifically, the metal salt, the intrinsic monolayer graphene, the carbon fiber (or the carbon nanotube) and the capsaicin are added into a container according to the composition proportion of the mildew-proof antibacterial active substance, deionized water with a set proportion is added into the container, and then the mixture is fully stirred until no floating substance or no precipitate exists, so that the aqueous solution of the mildew-proof antibacterial active substance is obtained.
In the aqueous solution of the mildew-proof antibacterial effective substance, the mass ratio of the mildew-proof antibacterial effective substance to the deionized water is controlled to be between 1:10 and 1: 20.
Step S2: mixing and stirring main body water-based resin, pigment filler, aqueous solution of mildew-proof antibacterial effective substance and deionized water to form the mildew-proof antibacterial coating.
In the step, main body water-based resin, pigment and filler and auxiliary agent can be sequentially added into the aqueous solution of the mildew-proof antibacterial active substance, namely, the main body water-based resin is firstly added into the aqueous solution of the mildew-proof antibacterial active substance, and the mixture is fully stirred until the main body water-based resin and the aqueous solution of the mildew-proof antibacterial active substance are fully mixed; then adding the auxiliary agent and fully stirring; finally, slowly adding the pigment and the filler, and fully stirring to obtain the mildewproof antibacterial coating.
Example 1
Adding copper ions, intrinsic single-layer graphene, carbon fibers and capsaicin into a preparation container, and adding deionized water in a set proportion into the preparation container to prepare an aqueous solution of the mildew-proof antibacterial active substance, wherein the mass part ratio of the copper ions, the intrinsic single-layer graphene, the carbon fibers, the capsaicin and the deionized water is 100: 5: 10: 10: 5400. specifically, copper ions may be copper salts (e.g., copper chloride, copper sulfate, etc.), the content of which may be calculated as the ratio of copper atoms to the molecular weight of the copper salts, the size of intrinsic single-layer graphene is 10 μm, and the carbon fiber has a diameter of 20nm and a length of 10 μm.
Then adding the waterborne acrylic resin with a set proportion into the aqueous solution of the mildew-proof antibacterial active substance, and fully stirring; adding the auxiliary agent in a set proportion, and fully stirring; finally, the pigment and the filler with a set proportion are slowly added and fully stirred. And after all the components are fully and uniformly mixed, the mildew-proof antibacterial coating can be obtained. The water-based acrylic resin, the pigment filler, the mildew-proof antibacterial active substance and the auxiliary agent are mixed according to the mass part ratio of 15: 40: 1: 0.8.
the following table 1 shows the comparison between the effects of the mildew-proof antibacterial coating obtained by the above method and the effects of the conventional mildew-proof antibacterial emulsion paint:
Figure BDA0003702215730000061
Figure BDA0003702215730000071
table 1: comparison of the antifungal and antibacterial effects
As can be seen from table 1, the mildew-proof antibacterial coating prepared by the method has a mildew-proof performance of level 0 in 56 days, and compared with a traditional mildew-proof antibacterial emulsion paint with a mildew-proof performance of level 0 in 28 days, the mildew-proof capability is significantly enhanced. When a 56-day mildew-proof antibacterial test is carried out, the difference of the mildew-proof antibacterial test effects of the two tests is obvious.
Example 2
Adding silver ions, intrinsic single-layer graphene, carbon nanotubes and capsaicin into a preparation container, and adding deionized water in a set proportion into the preparation container to prepare an aqueous solution of the mildew-proof antibacterial active substance, wherein the mass part ratio of the silver ions, the intrinsic single-layer graphene, the carbon nanotubes, the capsaicin and the deionized water is 100: 1: 2: 5: 4104. specifically, silver ions may be silver salts (e.g., silver chloride, silver nitrate, etc.), the content of which may be calculated as a ratio of atoms of silver to a molecular weight of the silver salt, the size of intrinsic single-layer graphene is 5 μm, and the carbon nanotube has a diameter of 30nm and a length of 5 μm.
Then adding the waterborne acrylic resin with a set proportion into the aqueous solution of the mildew-proof antibacterial active substance, and fully stirring; adding the auxiliary agent in a set proportion, and fully stirring; finally, the pigment and the filler with a set proportion are slowly added and fully stirred. And after all the components are fully and uniformly mixed, the mildew-proof antibacterial coating can be obtained. The water-based acrylic resin, the pigment filler, the mildew-proof antibacterial active substance and the auxiliary agent are mixed according to the mass part ratio of 12: 30: 1.5: 0.4.
example 3
Adding copper ions, intrinsic single-layer graphene, carbon fibers and capsaicin into a preparation container, and adding deionized water in a set proportion into the preparation container to prepare an aqueous solution of the mildew-proof antibacterial active substance, wherein the mass part ratio of the copper ions, the intrinsic single-layer graphene, the carbon fibers, the capsaicin and the deionized water is 100: 15: 25: 40: 6600. specifically, copper salts (e.g., copper chloride, copper sulfate, etc.) can be used as the copper ions, the content of which can be calculated as the ratio of the atoms of copper to the molecular weight of the copper salt, the size of intrinsic single-layer graphene is 20 μm, and the carbon fiber has a diameter of 60nm and a length of 20 μm.
Then adding the waterborne acrylic resin with a set proportion into the aqueous solution of the mildew-proof antibacterial active substance, and fully stirring; adding the auxiliary agent in a set proportion, and fully stirring; finally, the pigment and the filler with a set proportion are slowly added and fully stirred. And after all the components are fully and uniformly mixed, the mildew-proof antibacterial coating can be obtained. The paint comprises water-based acrylic resin, pigment and filler, a mildew-proof antibacterial active substance and an auxiliary agent, wherein the water-based acrylic resin, the pigment and filler, the mildew-proof antibacterial active substance and the auxiliary agent are 25: 50: 0.6: 0.4.
the above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The mildew-proof antibacterial coating is characterized by comprising main body water-based resin, pigment and filler, mildew-proof antibacterial effective substances, an auxiliary agent and deionized water, wherein the mildew-proof antibacterial effective substances comprise metal ions and carbon-based particles, and the carbon-based particles are composed of at least one of intrinsic single-layer graphene, carbon fibers and carbon nano tubes.
2. The mildew-proof antibacterial coating as claimed in claim 1, wherein the mass part ratio of the main aqueous resin, the pigment and filler, the mildew-proof antibacterial active substance, the auxiliary agent and the deionized water in the mildew-proof antibacterial coating is 12-25: 30-50: 0.6-1.5: 0.4-1.5: 22 to 57.
3. The mildew-proof antibacterial coating as claimed in claim 2, wherein the mass part ratio of the main aqueous resin, the pigment and filler, the mildew-proof antibacterial effective substance, the auxiliary agent and the deionized water in the mildew-proof antibacterial coating is 17-20: 38-42: 0.9-1.2: 0.8-1.1: 35.7 to 43.3.
4. The mildew-proof antibacterial coating according to claim 1, wherein the carbon-based particles are composed of intrinsic single-layer graphene and carbon fibers, and the mass part ratio of the metal ions, the intrinsic single-layer graphene and the carbon fibers in the mildew-proof antibacterial active substance is 100: 1-15: 2-25; alternatively, the first and second electrodes may be,
the carbon-based particles are composed of intrinsic single-layer graphene and carbon nano tubes, and the mass part ratio of metal ions, the intrinsic single-layer graphene and the carbon nano tubes in the mildew-proof antibacterial effective substance is 100: 1-15: 2 to 25.
5. The mildew-proof antibacterial coating according to claim 4, wherein the carbon-based particles are composed of intrinsic single-layer graphene and carbon fibers, and the mass part ratio of the metal ions, the intrinsic single-layer graphene and the carbon fibers in the mildew-proof antibacterial effective substance is 100: 5-11: 10-17; alternatively, the first and second electrodes may be,
the carbon-based particles are composed of intrinsic single-layer graphene and carbon nano tubes, and the mass part ratio of metal ions, the intrinsic single-layer graphene and the carbon nano tubes in the mildew-proof antibacterial effective substance is 100: 5-11: 10 to 17.
6. A mould-proof and antibacterial coating according to any one of claims 1 to 5, wherein the mould-proof and antibacterial effective substance further comprises capsaicin, and the mass ratio of the capsaicin to the metal ions is 5-40: 100.
7. the mildew-resistant antibacterial coating material according to any one of claims 1 to 5, wherein the intrinsic single-layer graphene has a size of 5 to 20 μm, and the carbon fiber and the carbon nanotube have a diameter of 20 to 60nm and a length of 5 to 20 μm.
8. The mildew-proof antibacterial coating according to any one of claims 1 to 5, wherein the main aqueous resin is one or more of styrene resin, acrylic resin, silicone-acrylic resin, aqueous polyurethane resin and aqueous fluorocarbon resin;
the metal ions are one or more of copper ions, silver ions, iron ions and rare earth elements.
9. A method for preparing the mildewproof and antibacterial paint according to any one of claims 1 to 8, comprising:
A. preparing an aqueous solution of the mildew-proof antibacterial active substance;
B. mixing and stirring main body water-based resin, pigment and filler, aqueous solution of mildew-proof antibacterial active substance, auxiliary agent and deionized water to form the mildew-proof antibacterial coating.
10. The method for preparing the mildewproof and antibacterial coating according to claim 9, wherein the steps of mixing and stirring the main body water-based resin, the pigment and filler, the aqueous solution of the mildewproof and antibacterial effective substance, the auxiliary agent and the deionized water to form the mildewproof and antibacterial coating comprise the following steps:
b1, adding the main aqueous resin into the aqueous solution of the mildew-proof and antibacterial active substance, and fully stirring;
b2, continuously adding the auxiliary agent, and fully stirring;
and B3, slowly adding the pigment and the filler, and fully stirring to obtain the mildewproof antibacterial coating.
CN202210696343.0A 2022-06-20 2022-06-20 Mildew-proof antibacterial coating and preparation method thereof Pending CN114958058A (en)

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CN111925716A (en) * 2020-09-01 2020-11-13 南通大学 Silver-loaded multi-walled carbon nanotube antibacterial water-based epoxy resin coating and preparation method thereof
CN113624370A (en) * 2021-07-28 2021-11-09 东莞市万科建筑技术研究有限公司 Building outer wall monitoring module and building
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