CN112322091A - Air purification, sterilization and mildew-proof coating and preparation method thereof - Google Patents
Air purification, sterilization and mildew-proof coating and preparation method thereof Download PDFInfo
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D133/00—Coating 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
- C09D133/04—Homopolymers or copolymers of esters
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C09D—COATING 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The application relates to the field of coatings, and particularly discloses an air purification, sterilization and mildew-proof coating and a preparation method thereof, wherein the coating comprises the following components in parts by weight: 10-25 parts of water, 0.3-0.5 part of hydroxyethyl cellulose, 10-20 parts of acrylic emulsion, 0.1-0.2 part of multifunctional auxiliary agent, 0.2-0.5 part of defoaming agent, 25-46 parts of filler, 8-15 parts of chlorine-containing resin and 15-25 parts of composite antibacterial agent; the filler comprises 4-7 parts of glass fiber, 5-10 parts of calcium carbonate, 2-5 parts of zinc oxide, 1-3 parts of starch, 12-19 parts of alcohol solvent and 1-2 parts of coupling agent. The preparation method of the air purification, sterilization and mildew-proof coating comprises the following steps: step one, preparing a composite antibacterial agent; step two, preparing a filler; adding hydroxyethyl cellulose, a multifunctional additive and a defoaming agent into water while stirring to obtain a thickening material; and step four, stirring and mixing the acrylic emulsion, the chlorine-containing resin and the filler uniformly to obtain a mixed material, and mixing and stirring the thickening material, the mixed material and the composite antibacterial agent uniformly. The coating prepared by the method has the advantages of low cost and good antibacterial and mildew-proof properties.
Description
Technical Field
The application relates to the field of coatings, in particular to an air purification, sterilization and mildew-proof coating and a preparation method thereof.
Background
The paint is used for forming a solid coating film with special functions of decoration, protection, insulation, corrosion prevention and the like on the surface of an object, is divided into liquid or solid materials, and belongs to fine chemical products. The coating is a continuous film which is coated on the surface of a protected or decorated object and can form firm adhesion with the coated object, and is a viscous liquid which is prepared by taking resin, oil or emulsion as a main material, adding or not adding pigments and fillers, adding corresponding auxiliary agents and using organic solvent or water.
For example, patent application with publication number CN102417748B discloses an efficient, environment-friendly, antibacterial and mildewproof inorganic composite nano-coating and a preparation method thereof, which comprises the following components in percentage by weight: 0.5 to 5 percent of wetting dispersant; 0.01-20% of inorganic composite nano antibacterial agent concentrated slurry; 0.5 to 10 percent of hydrophobic agent; 0.5-10% of anion powder; 0.5 to 8 percent of film forming additive; 0.1 to 2 percent of anti-settling agent; 0.8 to 10 percent of antifreeze; 0.1 to 3 percent of defoaming agent; 4-30% of pigment; 0-30% of filler; 15-45% of emulsion; 0.1 to 4 percent of thickening agent; 0.1 to 3 percent of flatting agent; 0-3% of pH regulator; 0.5 to 45 percent of water. The inorganic composite nano antibacterial agent is mainly added into the base material, so that the coating has the coating characteristics of low cost and high performance, has lasting and efficient antibacterial and mildewproof functions, has the sterilization rate of 100 percent within 6 hours, and has the mildewproof grade of one grade.
However, the inventor finds that the cost of enterprises is high when the coating is prepared by the method in the actual production process, and the inventor considers that in order to meet the market demand, the development of the coating with antibacterial and anti-mildew properties and the cost reduction of the enterprises is urgently needed.
Disclosure of Invention
In order to reduce enterprise cost, simplify process steps and simultaneously ensure the antibacterial property and the mildew resistance of the coating, the application provides the air purification, sterilization and mildew prevention coating and the preparation method thereof.
In a first aspect, the application provides an air purification, sterilization and mildew-proof coating, which adopts the following technical scheme:
an air purification, sterilization and mildew prevention coating comprises the following components in parts by weight: 10-25 parts of water, 0.3-0.5 part of hydroxyethyl cellulose, 10-20 parts of acrylic emulsion, 0.1-0.2 part of multifunctional auxiliary agent, 0.2-0.5 part of defoaming agent, 25-46 parts of filler, 8-15 parts of chlorine-containing resin and 15-25 parts of composite antibacterial agent; the filler comprises 4-7 parts of glass fiber, 5-10 parts of calcium carbonate, 2-5 parts of zinc oxide, 1-3 parts of starch, 12-19 parts of alcohol solvent and 1-2 parts of coupling agent;
the preparation method of the composite antibacterial agent comprises the following steps:
step 1, boiling water, clove, cortex moutan and camphor tree leaves, timing after the water is boiled, boiling for 10-20min, and then cooling to below 40 ℃ to filter and leave juice;
and 2, carrying out ultrasonic treatment on the bovine bone meal, the shell powder and the juice, and mixing and homogenizing to obtain slurry.
By adopting the technical scheme, the bonding strength of the coating can be improved to a certain extent by adopting the hydroxyethyl cellulose, the emulsion particle size of the acrylic emulsion is uniformly distributed, the emulsion is high in stability and excellent in waterproof performance, and the coating has excellent gloss and transparency and good comprehensive performance. The chlorine-containing resin and the acrylic emulsion are compounded to improve the mildew resistance of the coating, the multifunctional auxiliary agent is used as a strong co-dispersant, the coating can be prevented from being coagulated, the stability of the whole system is maintained, the coating is uniformly dispersed, and the multifunctional auxiliary agent is compounded with the hydroxyethyl cellulose to improve the thickening performance of the hydroxyethyl cellulose and improve the caking property of the coating, so that the comprehensive performance of the coating is improved. The filler is compounded with other raw materials, so that the formed paint film has good compactness, the invasion of bacteria and mould is reduced, and the mildew resistance of the product is improved.
The clove in the composite antibacterial agent has broad-spectrum antibacterial effect and has obvious killing effect on bacteria, fungi and the like; cortex moutan has good antibacterial effect, can have strong antibacterial effect on bacillus subtilis, escherichia coli, typhoid bacillus, proteus, pseudomonas aeruginosa, staphylococcus and the like, camphor tree leaves have certain antibacterial effect on staphylococcus aureus, escherichia coli, bacillus subtilis, saccharomycetes, penicillium and mucor, the three are compounded and boiled with water to form a decoction, so that effective ingredients can be immersed into juice, clove and cortex moutan have special fragrance, the formed juice also has certain fragrance, after the coating is coated into a film, fragrance can be gradually emitted, the taste of other substances in the coating is covered, and the mood of people is improved. The bovine bone meal and the acrylic emulsion are compounded, so that the bovine bone meal and the acrylic emulsion have good mildew resistance, do not poison human bodies, are not decayed after being placed, are green and environment-friendly, have high porosity and natural adsorbability, can effectively adsorb and decompose formaldehyde and harmful gases in the air after being coated into a film, play a role in air purification, and can be dispersed in a system by adsorbing a certain amount of juice by mixing the juice with the shell powder, thereby improving the antibacterial effect of the coating and inhibiting the growth of bacteria. The raw material components of clove, cortex moutan, camphor tree leaves and the like are cheap and easy to obtain, so that the cost of an enterprise is saved, and the antibacterial and anti-mildew performance of the product can be improved.
Preferably, the chlorine-containing resin is selected from one of perchloroethylene, chlorosulfonated polyethylene or a chlorine partial emulsion.
By adopting the technical scheme, after the perchloroethylene and other raw materials are coated into a film, the paint film has good weather resistance, strong resistance to ultraviolet rays, difficult pulverization and good color and light retention performance, and the coating formed by the perchloroethylene does not contain nutrients required by propagation of mould fungi, so that the coating is difficult to grow mould and has good water resistance, moisture resistance, mould resistance and chemical resistance. The molecular structure of chlorosulfonated polyethylene contains chlorosulfonyl active group, so that it shows high activity, and its formed paint film is quick to dry, and has good mechanical property, can improve the processability of paint, and possesses excellent properties of resisting corrosion of chemical medium, resisting ozone oxidation and resisting oil corrosion, etc. The polyvinylidene chloride emulsion has excellent film forming performance, compact film forming, low air permeability after film forming, good moisture resistance, capability of reducing the breeding of bacteria and mould and improvement of the mildew resistance of the coating.
Preferably, in the step 1, the mass ratio of the water, the clove, the cortex moutan and the camphor tree leaves is 2:1:1: 1.
By adopting the technical scheme, the proportion of the water, the clove, the cortex moutan and the camphor tree leaves is optimized, and the antibacterial performance of the coating is improved.
Preferably, the mass ratio of the bovine bone meal to the shell powder is 1: 2.
By adopting the technical scheme, the ratio of the bovine bone meal and the shell powder is optimized, and the antibacterial effect of the composite antibacterial agent is further improved.
Preferably, the defoamer is a higher alcohol defoamer.
Through adopting above-mentioned technical scheme, inside high carbon alcohol defoaming agent can be quick the infiltration liquid, the dispersibility is good to rapid diffusion is opened, eliminates multiple stubborn type foam, also can stabilize the defoaming under strong alkali, high temperature condition, and its defoaming, it presses down the bubble nature good.
Preferably, the alcohol solvent is one of ethylene glycol or 1, 4-butanediol.
By adopting the technical scheme, the alcohol solvent is selected to ensure good compatibility with other components, the glycol has good compatibility, and other raw material components can be uniformly dispersed in the system so as to be convenient for construction film forming and can be volatilized from a paint film after construction. The 1, 4-butanediol has low volatility, but has excellent oil resistance, alkali resistance and other performances, and has good wetting property and dispersibility.
Preferably, the coupling agent is a silane coupling agent.
By adopting the technical scheme, the matched coupling agent is selected to be matched with other raw materials, and the performance of the filler is synergistically improved.
In a second aspect, the application provides a preparation method of the air purification, sterilization and mildew-proof coating, which adopts the following technical scheme:
a preparation method of an air purification, sterilization and mildew-proof coating comprises the following steps:
step one, selecting the composite antibacterial agent prepared in the preparation example 1;
step two, preparing a filler;
step three, adding hydroxyethyl cellulose, a multifunctional additive and a defoaming agent into water while stirring at the rotating speed of 500-550r/min to obtain a thickening material;
and step four, stirring and mixing the acrylic emulsion, the chlorine-containing resin and the filler uniformly to obtain a mixed material, and mixing and stirring the thickening material, the mixed material and the composite antibacterial agent uniformly.
By adopting the technical scheme, different raw materials are treated step by step under different conditions, so that the prepared coating has good comprehensive performance.
Preferably, the preparation of the filler comprises the following steps:
step a, equally dividing an alcohol solvent into 2 parts by mass, equally dividing a coupling agent into 2 parts by mass, adding calcium carbonate, zinc oxide and 1 part of the coupling agent into 1 part of the alcohol solvent, uniformly stirring and mixing, heating to 60-70 ℃ to form a suspension, and adding starch to form a viscoelastic fluid;
step b, melting the glass fiber to obtain a glass fiber molten mass;
c, obtaining modified yarns by the aid of the glass fiber molten mass and the viscoelastic fluid through an electrostatic spinning technology, stirring, mixing and homogenizing the modified yarns, the rest 1 part of alcohol solvent and the rest 1 part of coupling agent, and drying for 5-8 hours at the constant temperature of 60-70 ℃ to obtain a dried material;
and d, grinding the dried material into powder of less than 100 nanometers.
By adopting the technical scheme, the calcium carbonate is filled in the coating as a framework, and the calcium carbonate is white and hydrophilic in color, fine in particles and capable of being uniformly dispersed in the coating, so that the coating is fine/uniform and high in whiteness, and the filling of the calcium carbonate can also enhance the deposition and permeability of the primer to the surface of the base layer. The zinc oxide has higher refractive index, has the capability of absorbing ultraviolet light, has strong tinting strength and covering power, does not pulverize, and has good light resistance and heat resistance; the zinc oxide can reduce the sensitivity of water in the coating, improve the weather resistance and chalking resistance of the coating, make the coating of the product flexible, firm and impervious, improve the compactness of the coating, reduce the growth of mould and fungus, thereby achieving the effects of preventing mould and controlling microorganisms. The glass fiber is non-combustible, has good corrosion resistance and small water absorption, and reduces the mildew breeding caused by the coating being affected with damp.
Glass fiber is melted to form glassy beads, other raw materials are firstly formed into viscoelastic fluid and added into the melted glass fiber to form wrapped aggregates, organic/inorganic composite modified yarns are obtained through an electrostatic spinning technology, a coupling agent is added, drying and grinding are carried out to obtain nanoscale powder, and the nanoscale powder is cooperated with other raw material components to improve the compactness of a coating film and simultaneously improve the mildew-proof and antibacterial properties of a product.
In summary, the present application has the following beneficial effects:
1. clove has broad-spectrum antibacterial action in the composite antibacterial agent adopted by the application, and has obvious killing action on bacteria, fungi and the like, cortex moutan has good antibacterial action, and can have strong antibacterial action on bacillus subtilis, escherichia coli, typhoid bacillus, proteus, pseudomonas aeruginosa, staphylococcus and the like, camphor tree leaves have certain antibacterial action on staphylococcus aureus, escherichia coli, bacillus subtilis, saccharomycetes, penicillium and mucor, the three are compounded and boiled with water to form a decoction, so that the effective components can be immersed in juice, clove and cortex moutan have special fragrance, the formed juice also has certain fragrance, and after the coating is formed into a film, the fragrance can be gradually emitted, the taste of other substances in the coating is covered, and the mood of people is improved. The bovine bone meal and the acrylic emulsion are compounded, so that the bovine bone meal and the acrylic emulsion have good mildew resistance, do not poison human bodies, are not decayed after being placed, are green and environment-friendly, have high porosity and natural adsorbability, can effectively adsorb and decompose formaldehyde and harmful gases in the air after being coated into a film, play a role in air purification, and can be dispersed in a system by adsorbing a certain amount of juice by mixing the juice with the shell powder, thereby improving the antibacterial effect of the coating and inhibiting the growth of bacteria.
2. The filler is compounded with other raw materials, so that the formed paint film has good compactness, the invasion of bacteria and mould is reduced, and the mildew resistance of the product is improved.
Detailed Description
The present application will be described in further detail with reference to examples.
The raw materials used in the application are all common commercial raw materials.
Preparation example
Preparation example 1
The preparation method of the composite antibacterial agent comprises the following steps:
step 1, boiling water, clove, cortex moutan and camphor tree leaves, wherein the mass ratio of the water to the clove, the cortex moutan and the camphor tree leaves is 1:1:2:2, timing after the water is boiled, boiling for 20min, and then cooling to below 40 ℃ and filtering to leave juice;
and 2, carrying out ultrasonic treatment on the bovine bone powder, the shell powder and the juice, mixing and homogenizing to obtain slurry, wherein the mass ratio of the bovine bone powder to the shell powder is 1: 1.
Preparation example 2
The preparation method of the composite antibacterial agent comprises the following steps:
step 1, boiling water, clove, cortex moutan and camphor tree leaves, wherein the mass ratio of the water to the clove, the cortex moutan and the camphor tree leaves is 2:1:1:1, timing after the water is boiled, boiling for 20min, and then cooling to below 40 ℃ and filtering to leave juice;
and 2, carrying out ultrasonic treatment on the bovine bone powder, the shell powder and the juice, mixing and homogenizing to obtain slurry, wherein the mass ratio of the bovine bone powder to the shell powder is 1: 1.
Preparation example 3
The preparation method of the composite antibacterial agent comprises the following steps:
step 1, boiling water, clove, cortex moutan and camphor tree leaves, wherein the mass ratio of the water to the clove, the cortex moutan and the camphor tree leaves is 2:1:1:1, timing after the water is boiled, boiling for 20min, and then cooling to below 40 ℃ and filtering to leave juice;
and 2, carrying out ultrasonic treatment on the bovine bone powder, the shell powder and the juice, mixing and homogenizing to obtain slurry, wherein the mass ratio of the bovine bone powder to the shell powder is 1: 2.
Examples
Example 1
An air purification, sterilization and mildew prevention coating comprises the following components in parts by weight: the water comprises 10 kg of water, 0.3 kg of hydroxyethyl cellulose, 10 kg of acrylic emulsion, 0.1 kg of multifunctional auxiliary agent, 0.2 kg of defoaming agent, 25 kg of filler, 8 kg of chlorine-containing resin and 15 kg of composite antibacterial agent; the filler comprises 4 kg of glass fiber, 12 kg of calcium carbonate, 5 kg of zinc oxide, 1 kg of starch, 2 kg of alcohol solvent and 1 kg of coupling agent;
wherein the viscosity of the hydroxyethyl cellulose is 10 ten thousand, the acrylic emulsion is elastic acrylic emulsion, the film forming temperature is 0 ℃, the multifunctional additive is AMP-95, the defoaming agent is a high-carbon alcohol defoaming agent, the chlorine-containing resin is perchloroethylene, the alcohol solvent is ethylene glycol, the coupling agent is a silane coupling agent, and the calcium carbonate is light calcium carbonate;
a preparation method of an air purification, sterilization and mildew-proof coating comprises the following steps:
step one, preparing a composite antibacterial agent;
step two, preparing a filler, wherein the preparation of the filler comprises the following steps:
step a, equally dividing an alcohol solvent into 2 parts by mass, equally dividing a coupling agent into 2 parts by mass, adding calcium carbonate, zinc oxide and 1 part of the coupling agent into 1 part of the alcohol solvent, uniformly stirring and mixing, heating to 65 ℃ while stirring at the rotating speed of 700r/min, stirring for 30min, forming a suspension, and adding starch to form a viscoelastic fluid;
step b, melting the glass fiber to obtain a glass fiber molten mass;
step c, obtaining modified yarns by the aid of the glass fiber molten mass and the viscoelastic fluid through an electrostatic spinning technology, stirring, mixing and homogenizing the modified yarns, the remaining 1 part of alcohol solvent and the remaining 1 part of coupling agent, and drying for 7 hours at the constant temperature of 65 ℃ to obtain a dry material;
d, grinding the dried material into powder below 100 nanometers;
step three, adding hydroxyethyl cellulose, a multifunctional additive and a defoaming agent into water while stirring at the rotating speed of 550r/min to obtain a thickening material;
and step four, stirring and mixing the acrylic emulsion, the chlorine-containing resin and the filler uniformly at the rotating speed of 1000r/min to obtain a mixed material, and mixing and stirring the thickening material, the mixed material and the composite antibacterial agent uniformly at the rotating speed of 1200 r/min.
Example 2-1 differed from example 1 only in the feed composition, and the feed compositions of examples 1-7 were as shown in table 1.
Table 1 raw material components in examples 1 to 7
Example 8
The difference from example 7 is that the composite antibacterial agent obtained in preparation example 2 was selected and the rest was the same as example 7.
Example 9
The difference from example 7 is that the composite antibacterial agent obtained in preparation example 3 was selected and the rest was the same as example 7.
Example 10
The only difference from example 9 is that the preparation of the filler comprises the following steps: equally dividing an alcohol solvent into 2 parts by mass, equally dividing a coupling agent into 2 parts by mass, adding calcium carbonate, zinc oxide and 1 part of the coupling agent into 1 part of the alcohol solvent, stirring and mixing uniformly, heating to 70 ℃ to form a suspension, and adding starch to form a viscoelastic fluid;
step b, melting the glass fiber to obtain a glass fiber molten mass;
c, obtaining modified yarns by the aid of the glass fiber molten mass and the viscoelastic fluid through an electrostatic spinning technology, stirring, mixing and homogenizing the modified yarns, the rest 1 part of alcohol solvent and the rest 1 part of coupling agent, and drying for 5 hours at the constant temperature of 70 ℃ to obtain a dry material;
and d, grinding the dried material into powder of less than 100 nanometers.
Comparative example
Comparative example 1
The difference from example 1 is that the same as example 1 was carried out without adding the complex antibacterial agent.
Comparative example 2
The difference from example 1 was that the fillers were replaced with 12.5 kg of calcium carbonate and 12.5 kg of zinc oxide, the remainder being identical to example 1.
Comparative example 3
The only difference from example 1 is that the preparation of the filler comprises the following steps: mixing calcium carbonate, zinc oxide, coupling agent, alcohol solvent, starch and glass fiber, stirring, homogenizing, standing at 65 deg.C for 8 hr to obtain dry material, and grinding into powder below 100 nm.
Performance test
The coatings prepared in examples 1-10 and comparative examples 1-3 were sampled and tested for water resistance (96 hours), alkali resistance (48 hours), antibacterial property, antifungal property, antibacterial durability and antifungal durability by combining national standards GB/T9755-2001 synthetic resin emulsion exterior wall coating, GB/T1741-2007 paint film antifungal assay and HG/T3950-2007 antibacterial coating, and the test results are shown in Table 2.
TABLE 2 test results
As can be seen from examples 1 to 10 and comparative examples 1 to 3, the basic properties of the coating material obtained therefrom, such as water resistance and alkali resistance, were acceptable regardless of whether the composite antibacterial agent was not added or the filler was replaced with a conventionally used filler, or the preparation procedure of the filler was changed. As can be seen from examples 1-10 in combination with Table 2, the antibacterial property and antibacterial durability of the coating prepared by the method can reach level I, and the antifungal property and antifungal durability can reach level 0.
However, as can be seen from example 1 and comparative example 1 in combination with table 2, the coating without the composite antimicrobial agent has no antibacterial property and antifungal property, and thus it can be seen that the antibacterial property and antifungal property of the product can be significantly improved by adding the composite antimicrobial agent prepared in the present application. As can be seen from example 1 and comparative example 2 in combination with Table 2, the antifungal properties and antibacterial properties of the coating material obtained by replacing the filler selected in the present application with a conventional filler were reduced, and it can be seen that the antibacterial properties and antifungal properties of the coating material were improved by the components of the filler selected in the present application in cooperation with other raw material components. As can be seen from example 1 and comparative example 3 in combination with Table 2, the coatings prepared using filler preparations other than those of the present application exhibited reduced antibacterial and antifungal properties.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (9)
1. The air purification, sterilization and mildew prevention coating is characterized by comprising the following components in parts by weight: 10-25 parts of water, 0.3-0.5 part of hydroxyethyl cellulose, 10-20 parts of acrylic emulsion, 0.1-0.2 part of multifunctional auxiliary agent, 0.2-0.5 part of defoaming agent, 25-46 parts of filler, 8-15 parts of chlorine-containing resin and 15-25 parts of composite antibacterial agent; the filler comprises 4-7 parts of glass fiber, 5-10 parts of calcium carbonate, 2-5 parts of zinc oxide, 1-3 parts of starch, 12-19 parts of alcohol solvent and 1-2 parts of coupling agent;
the preparation method of the composite antibacterial agent comprises the following steps:
step 1, boiling water, clove, cortex moutan and camphor tree leaves, timing after the water is boiled, boiling for 10-20min, and then cooling to below 40 ℃ to filter and leave juice;
and 2, carrying out ultrasonic treatment on the bovine bone meal, the shell powder and the juice, and mixing and homogenizing to obtain slurry.
2. The air purifying, sterilizing and mildew-proof coating as claimed in claim 1, wherein: the chlorine-containing resin is selected from perchloroethylene, chlorosulfonated polyethylene or one of chlorine partial emulsion.
3. The air purifying, sterilizing and mildew-proof coating as claimed in claim 2, wherein: in the step 1, the mass ratio of the water to the clove to the tree peony bark to the camphor tree leaves is 2:1:1: 1.
4. The air purifying, sterilizing and mildew-proof coating as claimed in claim 3, wherein: the mass ratio of the bovine bone meal to the shell powder is 1: 2.
5. The air purifying, sterilizing and mildew-proof coating as claimed in claim 1, wherein: the defoaming agent is a high-carbon alcohol defoaming agent.
6. The air purifying, sterilizing and mildew-proof coating as claimed in claim 1, wherein: the alcohol solvent is one of ethylene glycol or 1, 4-butanediol.
7. The air purifying, sterilizing and mildew-proof coating as claimed in claim 1, wherein: the coupling agent is a silane coupling agent.
8. The preparation method of the air purifying, sterilizing and mildew-proof coating as claimed in any one of claims 1-7, wherein: the method comprises the following steps:
step one, preparing a composite antibacterial agent;
step two, preparing a filler;
step three, adding hydroxyethyl cellulose, a multifunctional additive and a defoaming agent into water while stirring at the rotating speed of 500-550r/min to obtain a thickening material;
and step four, stirring and mixing the acrylic emulsion, the chlorine-containing resin and the filler uniformly to obtain a mixed material, and mixing and stirring the thickening material, the mixed material and the composite antibacterial agent uniformly.
9. The preparation method of the air purifying, sterilizing and mildew-proof coating as claimed in claim 8, wherein the preparation method comprises the following steps: the preparation of the filler comprises the following steps:
step a, equally dividing an alcohol solvent into 2 parts by mass, equally dividing a coupling agent into 2 parts by mass, adding calcium carbonate, zinc oxide and 1 part of the coupling agent into 1 part of the alcohol solvent, uniformly stirring and mixing, heating to 60-70 ℃ to form a suspension, and adding starch to form a viscoelastic fluid;
step b, melting the glass fiber to obtain a glass fiber molten mass;
c, obtaining modified yarns by the aid of the glass fiber molten mass and the viscoelastic fluid through an electrostatic spinning technology, stirring, mixing and homogenizing the modified yarns, the rest 1 part of alcohol solvent and the rest 1 part of coupling agent, and drying for 5-8 hours at the constant temperature of 60-70 ℃ to obtain a dried material;
and d, grinding the dried material into powder of less than 100 nanometers.
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| CN116218289A (en) * | 2023-02-10 | 2023-06-06 | 福建比美特环保集团有限公司 | Skin-feel artistic coating and preparation method thereof |
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