CN112812635A - Negative oxygen ion interior wall decorative coating and preparation method thereof - Google Patents
Negative oxygen ion interior wall decorative coating and preparation method thereof Download PDFInfo
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- CN112812635A CN112812635A CN202011623578.4A CN202011623578A CN112812635A CN 112812635 A CN112812635 A CN 112812635A CN 202011623578 A CN202011623578 A CN 202011623578A CN 112812635 A CN112812635 A CN 112812635A
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- C—CHEMISTRY; METALLURGY
- 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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- C—CHEMISTRY; METALLURGY
- 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
- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
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Abstract
The invention relates to the technical field of interior wall decorative coatings, in particular to a negative oxygen ion interior wall decorative coating and a preparation method thereof, wherein the coating comprises the following raw materials in parts by mass: 90-100 parts of water, 75-85 parts of acrylic resin, 35-45 parts of tourmaline powder, 12-16 parts of modified silane coupling agent, 2-6 parts of sodium dodecyl benzene sulfonate, 3-5 parts of sodium alkyl aryl sulfonate, 3-5 parts of polydimethylsiloxane, 12-16 parts of activated alumina, 2-6 parts of methyl cellulose, 10-12 parts of pigment powder, 4-6 parts of xylylenediamine, 5-7 parts of antibacterial liquid and 5-7 parts of modified mildew-proof reinforcing agent, and the preparation method comprises the following steps: s1, weighing the raw materials according to the weight for later use; s2, putting water, acrylic resin, tourmaline powder, sodium dodecyl benzene sulfonate, sodium alkyl aryl sulfonate, xylylenediamine and polydimethylsiloxane into a reaction kettle, heating to 65 ℃, and stirring uniformly. The invention can not only improve the inhibiting effect of the coating on fungi, but also improve the mildew-proof effect of the coating.
Description
Technical Field
The invention relates to the technical field of interior wall decorative coatings, in particular to a negative oxygen ion interior wall decorative coating and a preparation method thereof.
Background
The decorative coating is used for decorating and protecting the outer wall surface of a building, so that the building is beautiful and tidy, the aims of beautifying the urban environment and giving people a fresh and cool space are fulfilled, meanwhile, the effect of protecting the wall surface of the building can be achieved, and the service life of the decorative coating is prolonged. However, after the existing paint is used in an unsealing mode, fungi are easily produced, the later effect of the paint is affected, and mildew easily occurs after the paint is smeared on a wall surface for a long time. Therefore, we propose a negative oxygen ion interior wall decorative coating and a preparation method thereof to solve the above problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a negative oxygen ion interior wall decorative coating and a preparation method thereof.
The negative oxygen ion interior wall decorative coating comprises the following raw materials in parts by mass: 90-100 parts of water, 75-85 parts of acrylic resin, 35-45 parts of tourmaline powder, 12-16 parts of modified silane coupling agent, 2-6 parts of sodium dodecyl benzene sulfonate, 3-5 parts of sodium alkyl aryl sulfonate, 3-5 parts of polydimethylsiloxane, 12-16 parts of activated alumina, 2-6 parts of methyl cellulose, 10-12 parts of pigment powder, 4-6 parts of xylylenediamine, 5-7 parts of antibacterial liquid and 5-7 parts of modified mildew-proof reinforcing agent.
Preferably, the modified silane coupling agent is prepared from n-octyl trimethoxy silane, acetic acid, methanol and alkylphenol ethoxylates.
Preferably, the preparation process of the modified silane coupling agent is as follows: mixing n-octyl trimethoxy silane and methanol, adding acetic acid and alkylphenol ethoxylates, stirring to mix completely, and heating in water bath at 150 deg.C for 15min to obtain the modified silane coupling agent.
Preferably, the pigment powder is a mixed powder of carbon black and any one of titanium dioxide, zinc white, iron yellow powder, iron red powder and molybdenum chromium red powder, and the mixing mass ratio of the mixed powder to the carbon black is 2: 1.
Preferably, the antibacterial liquid is prepared from 2, 6-dimethoxy benzoquinone, chitosan fiber and quercetin.
Preferably, the preparation process of the antibacterial liquid is as follows: grinding 2, 6-dimethoxy benzoquinone into powder, mixing with chitosan fiber and quercetin, adding water, mixing and stirring until completely fused, and heating in water bath at 75 deg.C for 15min to obtain antibacterial liquid.
Preferably, the modified mildew-proof reinforcing agent is prepared from monomethyl fumarate and 1-acetonitrile-3-methylimidazole bistrifluoromethyl sulfonic acid imine, and the preparation method comprises the steps of adding 1-acetonitrile-3-methylimidazole bistrifluoromethyl sulfonic acid imine into monomethyl fumarate, adding cyclohexanone, and stirring until complete fusion, so as to obtain the modified mildew-proof reinforcing agent.
Preferably, the synthesis method of the 1-acetonitrile-3-methylimidazole bistrifluoromethylsulfonic acid imine comprises the following steps: dissolving the intermediate [ MCNMIM ] [ Cl ] in distilled water, adding bis (trifluoromethyl) sulfonimide lithium with equal molar mass into the distilled water, stirring the mixture for 3 hours at room temperature, standing the mixture, layering the mixture, and obtaining the ionic liquid 1-acetonitrile-3-methylimidazole bis (trifluoromethyl) sulfonimide as the upper layer and the lower layer of colorless transparent liquid.
A preparation method of negative oxygen ion interior wall decorative paint comprises the following steps:
s1, weighing the raw materials according to the weight for later use;
s2, putting water, acrylic resin, tourmaline powder, sodium dodecyl benzene sulfonate, sodium alkyl aryl sulfonate, xylylenediamine and polydimethylsiloxane into a reaction kettle, heating to 65 ℃, and stirring uniformly;
s3, continuously adding the antibacterial liquid, the pigment powder and the modified mildew-proof reinforcing agent into the reaction kettle, and stirring until the antibacterial liquid, the pigment powder and the modified mildew-proof reinforcing agent are completely dissolved and uniformly dispersed, wherein the temperature in the stirring process is controlled to be 65-75 ℃;
s4, keeping the temperature at 65-75 ℃, adding activated alumina, a modified silane coupling agent and methyl cellulose, heating the temperature of the reaction kettle to 85 ℃, and stirring for 2-3 hours to obtain the finished coating.
Preferably, the rotation speed in S2 is 850-1000r/min, and the rotation speed in S4 is 900-1200 r/min.
The invention has the beneficial effects that:
1. according to the invention, 2, 6-dimethoxy benzoquinone, chitosan fiber and quercetin are fused and subjected to water bath treatment to prepare the antibacterial liquid, and the antibacterial liquid is added into the raw materials, so that the effect of inhibiting fungi such as yeast can be improved.
2. According to the invention, the modified mildew-proof reinforcing agent is prepared by taking monomethyl fumarate and 1-acetonitrile-3-methylimidazole bistrifluoromethylsulfonic acid imine as raw materials, so that the mildew-proof effect of the coating after coating can be effectively improved.
In conclusion, the invention not only can improve the fungus inhibiting effect of the coating, but also can improve the mildew-proof effect of the coating.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
The negative oxygen ion interior wall decorative coating comprises the following raw materials in parts by mass: 90-100 parts of water, 75-85 parts of acrylic resin, 35-45 parts of tourmaline powder, 12-16 parts of modified silane coupling agent, 2-6 parts of sodium dodecyl benzene sulfonate, 3-5 parts of sodium alkyl aryl sulfonate, 3-5 parts of polydimethylsiloxane, 12-16 parts of activated alumina, 2-6 parts of methyl cellulose, 10-12 parts of pigment powder, 4-6 parts of xylylenediamine, 5-7 parts of antibacterial liquid and 5-7 parts of modified mildew-proof reinforcing agent.
Wherein the pigment powder is a mixed powder of carbon black and any one of titanium dioxide, zinc white, iron yellow, iron red and molybdenum chromium red, the mixing mass ratio of the mixed powder to the carbon black is 2:1, and the mixed powder is preferably a mixed powder of titanium dioxide and carbon black.
Further, the modified silane coupling agent is prepared from n-octyl trimethoxy silane, acetic acid, methanol and alkylphenol polyoxyethylene, and the preparation process comprises the following steps: mixing n-octyl trimethoxy silane and methanol, adding acetic acid and alkylphenol ethoxylates, stirring to mix completely, and heating in water bath at 150 deg.C for 15min to obtain the modified silane coupling agent.
Further, the antibacterial liquid is prepared from 2, 6-dimethoxy benzoquinone, chitosan fiber and quercetin, and the preparation process comprises the following steps: grinding 2, 6-dimethoxy benzoquinone into powder, mixing with chitosan fiber and quercetin, adding water, mixing and stirring until completely fused, and heating in water bath at 75 deg.C for 15min to obtain antibacterial liquid.
Further, the modified mildew-proof reinforcing agent is prepared from monomethyl fumarate and 1-acetonitrile-3-methylimidazole bistrifluoromethylsulfonic acid imine, and the preparation method comprises the steps of adding 1-acetonitrile-3-methylimidazole bistrifluoromethylsulfonic acid imine into monomethyl fumarate, adding cyclohexanone, and stirring until complete fusion, thus obtaining the modified mildew-proof reinforcing agent.
Further, the synthesis method of the 1-acetonitrile-3-methylimidazole bistrifluoromethylsulfonic acid imine comprises the following steps: dissolving the intermediate [ MCNMIM ] [ Cl ] in distilled water, adding bis (trifluoromethyl) sulfonimide lithium with equal molar mass into the distilled water, stirring the mixture for 3 hours at room temperature, standing the mixture, layering the mixture, and obtaining the ionic liquid 1-acetonitrile-3-methylimidazole bis (trifluoromethyl) sulfonimide as the upper layer and the lower layer of colorless transparent liquid.
A preparation method of negative oxygen ion interior wall decorative paint comprises the following steps:
s1, weighing the raw materials according to the weight for later use;
s2, putting water, acrylic resin, tourmaline powder, sodium dodecyl benzene sulfonate, sodium alkyl aryl sulfonate, xylylenediamine and polydimethylsiloxane into a reaction kettle, heating to 65 ℃, and then stirring and uniformly mixing at the rotating speed of 860 r/min;
s3, continuously adding the antibacterial liquid, the pigment powder and the modified mildew-proof reinforcing agent into the reaction kettle, and stirring until the antibacterial liquid, the pigment powder and the modified mildew-proof reinforcing agent are completely dissolved and uniformly dispersed, wherein the temperature in the stirring process is controlled to be 65-75 ℃;
s4, keeping the temperature at 65-75 ℃, adding activated alumina, a modified silane coupling agent and methyl cellulose, heating the temperature of the reaction kettle to 85 ℃, and stirring at the rotating speed of 1200r/min for 2 hours to obtain the finished coating.
Example (b):
the first embodiment is as follows:
the negative oxygen ion interior wall decorative coating comprises the following raw materials in parts by mass: 90 parts of water, 75 parts of acrylic resin, 35 parts of tourmaline powder, 12 parts of modified silane coupling agent, 2 parts of sodium dodecyl benzene sulfonate, 3 parts of alkyl aryl sodium sulfonate, 3 parts of polydimethylsiloxane, 12 parts of activated alumina, 2 parts of methylcellulose, 10 parts of pigment powder, 4 parts of xylylenediamine, 5 parts of antibacterial liquid and 5 parts of modified mildew-proof reinforcing agent.
Example two:
the negative oxygen ion interior wall decorative coating comprises the following raw materials in parts by mass: 95 parts of water, 80 parts of acrylic resin, 30 parts of tourmaline powder, 14 parts of modified silane coupling agent, 4 parts of sodium dodecyl benzene sulfonate, 4 parts of sodium alkyl aryl sulfonate, 4 parts of polydimethylsiloxane, 14 parts of activated alumina, 4 parts of methyl cellulose, 11 parts of pigment powder, 5 parts of xylylenediamine, 6 parts of antibacterial liquid and 6 parts of modified mildew-proof reinforcing agent.
Example three:
the negative oxygen ion interior wall decorative coating comprises the following raw materials in parts by mass: 100 parts of water, 85 parts of acrylic resin, 45 parts of tourmaline powder, 16 parts of modified silane coupling agent, 6 parts of sodium dodecyl benzene sulfonate, 5 parts of sodium alkyl aryl sulfonate, 5 parts of polydimethylsiloxane, 16 parts of activated alumina, 6 parts of methyl cellulose, 12 parts of pigment powder, 6 parts of xylylenediamine, 7 parts of antibacterial liquid and 7 parts of modified mildew-proof reinforcing agent.
The preparation process of the coating from the raw materials in the above examples is as follows:
s1, weighing the raw materials according to the weight for later use;
s2, putting water, acrylic resin, tourmaline powder, sodium dodecyl benzene sulfonate, sodium alkyl aryl sulfonate, xylylenediamine and polydimethylsiloxane into a reaction kettle, heating to 65 ℃, and then stirring and uniformly mixing at the rotating speed of 860 r/min;
s3, continuously adding the antibacterial liquid, the pigment powder and the modified mildew-proof reinforcing agent into the reaction kettle, and stirring until the antibacterial liquid, the pigment powder and the modified mildew-proof reinforcing agent are completely dissolved and uniformly dispersed, wherein the temperature in the stirring process is controlled to be 65-75 ℃;
s4, keeping the temperature at 65-75 ℃, adding activated alumina, a modified silane coupling agent and methyl cellulose, heating the temperature of the reaction kettle to 85 ℃, and stirring at the rotating speed of 1200r/min for 2 hours to obtain the finished coating.
Test one: taking saccharomycetes as an example, the bacteriostasis rate of the coating on the saccharomycetes is measured
Comparative example one:
the negative oxygen ion interior wall decorative coating comprises the following raw materials in parts by mass: 90 parts of water, 75 parts of acrylic resin, 35 parts of tourmaline powder, 12 parts of modified silane coupling agent, 2 parts of sodium dodecyl benzene sulfonate, 3 parts of sodium alkyl aryl sulfonate, 3 parts of polydimethylsiloxane, 12 parts of activated alumina, 2 parts of methylcellulose, 10 parts of pigment powder, 4 parts of xylylenediamine and 5 parts of modified mildew-proof reinforcing agent.
Comparative example two:
the negative oxygen ion interior wall decorative coating comprises the following raw materials in parts by mass: 95 parts of water, 80 parts of acrylic resin, 30 parts of tourmaline powder, 14 parts of modified silane coupling agent, 4 parts of sodium dodecyl benzene sulfonate, 4 parts of sodium alkyl aryl sulfonate, 4 parts of polydimethylsiloxane, 14 parts of activated alumina, 4 parts of methyl cellulose, 11 parts of pigment powder, 5 parts of xylylenediamine and 6 parts of modified mildew-proof reinforcing agent.
Comparative example three:
the negative oxygen ion interior wall decorative coating comprises the following raw materials in parts by mass: 95 parts of water, 80 parts of acrylic resin, 30 parts of tourmaline powder, 14 parts of modified silane coupling agent, 4 parts of sodium dodecyl benzene sulfonate, 4 parts of sodium alkyl aryl sulfonate, 4 parts of polydimethylsiloxane, 14 parts of activated alumina, 4 parts of methyl cellulose, 11 parts of pigment powder, 5 parts of xylylenediamine and 6 parts of modified mildew-proof reinforcing agent.
The process for preparing the coating from the raw materials in each proportion is as follows:
s1, weighing the raw materials according to the weight for later use;
s2, putting water, acrylic resin, tourmaline powder, sodium dodecyl benzene sulfonate, sodium alkyl aryl sulfonate, xylylenediamine and polydimethylsiloxane into a reaction kettle, heating to 65 ℃, and then stirring and uniformly mixing at the rotating speed of 860 r/min;
s3, continuously adding the pigment powder and the modified mildew-proof reinforcing agent into the reaction kettle, stirring until the pigment powder and the modified mildew-proof reinforcing agent are completely dissolved and uniformly dispersed, and controlling the temperature to be 65-75 ℃ in the stirring process;
s4, keeping the temperature at 65-75 ℃, adding activated alumina, a modified silane coupling agent and methyl cellulose, heating the temperature of the reaction kettle to 85 ℃, and stirring at the rotating speed of 1200r/min for 2 hours to obtain the finished coating.
The coatings of the above examples and comparative examples were taken and compared using the following experimental methods:
preparation of bacterial suspension: inoculating saccharomycetes on a potato glucose agar culture medium, culturing for 48h at 28 ℃, selecting a small amount of thalli from a cultured strain by using an inoculating loop, uniformly shaking to prepare a bacterial suspension, measuring the concentration of bacterial liquid by using a flat plate bacterial colony counting method, and using a dilution method to ensure that the content of the bacterial liquid is 10efu/mL, namely the test bacterial liquid;
② in vitro bacteriostasis test determination: the coating was added dropwise to a sterile petri dish (15 mm diameter) and 0.2mL of test bacterial solution (the concentration of the diluted bacterial solution was about l 0)3piece/mL), the cloth ware coating is even, repeats 3 times, uses sterile water as contrast, puts the culture dish in the incubator and cultivates 48 hours at 28 ℃ constant temperature, counts the colony number, calculates the bacteriostasis rate, as shown in the following table:
as can be seen from the data in the above table, in the embodiment with the antibacterial liquid, the antibacterial rate of the prepared coating is higher than that of the coating without the antibacterial liquid in the comparative example, and thus, the addition of the antibacterial liquid can improve the inhibition effect on fungi such as yeast.
And (2) test II: testing the mildew-proof performance of paint (refer to GB/T1741 Standard No. < determination of paint film resistance to mildew >)
Comparative example four:
the negative oxygen ion interior wall decorative coating comprises the following raw materials in parts by mass: 90 parts of water, 75 parts of acrylic resin, 35 parts of tourmaline powder, 12 parts of modified silane coupling agent, 2 parts of sodium dodecyl benzene sulfonate, 3 parts of sodium alkyl aryl sulfonate, 3 parts of polydimethylsiloxane, 12 parts of activated alumina, 2 parts of methylcellulose, 10 parts of pigment powder, 4 parts of xylylenediamine and 5 parts of antibacterial solution.
Comparative example five:
the negative oxygen ion interior wall decorative coating comprises the following raw materials in parts by mass: 95 parts of water, 80 parts of acrylic resin, 30 parts of tourmaline powder, 14 parts of modified silane coupling agent, 4 parts of sodium dodecyl benzene sulfonate, 4 parts of sodium alkyl aryl sulfonate, 4 parts of polydimethylsiloxane, 14 parts of activated alumina, 4 parts of methyl cellulose, 11 parts of pigment powder, 5 parts of xylylenediamine and 6 parts of antibacterial liquid.
Comparative example six:
the negative oxygen ion interior wall decorative coating comprises the following raw materials in parts by mass: 100 parts of water, 85 parts of acrylic resin, 45 parts of tourmaline powder, 16 parts of modified silane coupling agent, 6 parts of sodium dodecyl benzene sulfonate, 5 parts of sodium alkyl aryl sulfonate, 5 parts of polydimethylsiloxane, 16 parts of activated alumina, 6 parts of methyl cellulose, 12 parts of pigment powder, 6 parts of xylylenediamine and 7 parts of antibacterial liquid.
The above comparative examples were prepared by the following preparation method, specifically:
s1, weighing the raw materials according to the weight for later use;
s2, putting water, acrylic resin, tourmaline powder, sodium dodecyl benzene sulfonate, sodium alkyl aryl sulfonate, xylylenediamine and polydimethylsiloxane into a reaction kettle, heating to 65 ℃, and then stirring and uniformly mixing at the rotating speed of 860 r/min;
s3, continuously adding the antibacterial liquid and the pigment powder into the reaction kettle, stirring until the antibacterial liquid and the pigment powder are completely dissolved and uniformly dispersed, and controlling the temperature to be 65-75 ℃ in the stirring process;
s4, keeping the temperature at 65-75 ℃, adding activated alumina, a modified silane coupling agent and methyl cellulose, heating the temperature of the reaction kettle to 85 ℃, and stirring at the rotating speed of 1200r/min for 2 hours to obtain the finished coating.
Reference example one:
the negative oxygen ion interior wall decorative coating comprises the following raw materials in parts by mass: 90 parts of water, 75 parts of acrylic resin, 35 parts of tourmaline powder, 12 parts of modified silane coupling agent, 2 parts of sodium dodecyl benzene sulfonate, 3 parts of alkyl aryl sodium sulfonate, 3 parts of polydimethylsiloxane, 12 parts of activated alumina, 2 parts of methylcellulose, 10 parts of pigment powder, 4 parts of xylylenediamine, 5 parts of antibacterial liquid and 5 parts of mildew-proof enhancer.
Reference example two:
the negative oxygen ion interior wall decorative coating comprises the following raw materials in parts by mass: 95 parts of water, 80 parts of acrylic resin, 30 parts of tourmaline powder, 14 parts of modified silane coupling agent, 4 parts of sodium dodecyl benzene sulfonate, 4 parts of sodium alkyl aryl sulfonate, 4 parts of polydimethylsiloxane, 14 parts of activated alumina, 4 parts of methyl cellulose, 11 parts of pigment powder, 5 parts of xylylenediamine, 6 parts of antibacterial liquid and 6 parts of mildew preventive enhancer.
Reference example three:
the negative oxygen ion interior wall decorative coating comprises the following raw materials in parts by mass: 100 parts of water, 85 parts of acrylic resin, 45 parts of tourmaline powder, 16 parts of modified silane coupling agent, 6 parts of sodium dodecyl benzene sulfonate, 5 parts of sodium alkyl aryl sulfonate, 5 parts of polydimethylsiloxane, 16 parts of activated alumina, 6 parts of methyl cellulose, 12 parts of pigment powder, 6 parts of xylylenediamine, 7 parts of antibacterial liquid and 7 parts of mildew-proof reinforcing agent.
In each reference example, the mildew-proof enhancer is only monomethyl fumarate, and the process for preparing the coating from the raw materials is as follows:
s1, weighing the raw materials according to the weight for later use;
s2, putting water, acrylic resin, tourmaline powder, sodium dodecyl benzene sulfonate, sodium alkyl aryl sulfonate, xylylenediamine and polydimethylsiloxane into a reaction kettle, heating to 65 ℃, and then stirring and uniformly mixing at the rotating speed of 860 r/min;
s3, continuously adding the antibacterial liquid, the pigment powder and the mildewproof reinforcing agent into the reaction kettle, stirring until the antibacterial liquid, the pigment powder and the mildewproof reinforcing agent are completely dissolved and uniformly dispersed, and controlling the temperature to be 65-75 ℃ in the stirring process;
s4, keeping the temperature at 65-75 ℃, adding activated alumina, a modified silane coupling agent and methyl cellulose, heating the temperature of the reaction kettle to 85 ℃, and stirring at the rotating speed of 1200r/min for 2 hours to obtain the finished coating.
The coatings of examples one to three, the above comparative examples and the reference examples were taken and subjected to the following tests:
testing by a mould chamber suspension method: a sample panel was prepared by coating the 3/4 surface area of the panel with paint, leaving the 1/4 surface area (typically the top of the panel) uncoated with the sample, inoculating the seed, placing in a chamber maintained at 28-30 ℃ and 95% relative humidity, observing the growth of the panel after 28 days (optionally using a magnifying glass) and recording the results in the following table:
note: the mildew growth was rated as follows:
grade 0-no significant mold growth under about 50-fold magnification
Grade 1-no or hardly any mold growth, but obvious mold growth under magnifier grade 2-obvious mold growth with naked eye, the coverage area on the sample surface is 10% -30%
Grade 3-obviously seeing mildew with naked eyes, the coverage area on the sample surface is 30-60%
Grade 4-obviously see mold growth with naked eye, the coverage area on the sample surface is more than 60%
As can be seen from the data in the above table, the coating in the example to which the modified antifungal enhancer was added did not show visible mold after 28 days, the coating in the comparative example to which the modified antifungal enhancer was not added showed a large amount of visible mold after 28 days, and the reference example to which the unmodified monomethyl fumarate was added as the antifungal enhancer showed a higher degree of mold than in the example but a lower degree of mold than in the comparative example after 28 days, whereby it was found that the monomethyl fumarate as the antifungal enhancer effectively improved the antifungal effect of the coating, and the monomethyl fumarate (i.e., the modified antifungal enhancer) further improved the antifungal effect of the coating.
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 person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The negative oxygen ion interior wall decorative coating is characterized by comprising the following raw materials in parts by mass: 90-100 parts of water, 75-85 parts of acrylic resin, 35-45 parts of tourmaline powder, 12-16 parts of modified silane coupling agent, 2-6 parts of sodium dodecyl benzene sulfonate, 3-5 parts of sodium alkyl aryl sulfonate, 3-5 parts of polydimethylsiloxane, 12-16 parts of activated alumina, 2-6 parts of methyl cellulose, 10-12 parts of pigment powder, 4-6 parts of xylylenediamine, 5-7 parts of antibacterial liquid and 5-7 parts of modified mildew-proof reinforcing agent.
2. The negative oxygen ion interior wall decorative coating of claim 1, wherein the modified silane coupling agent is prepared from n-octyltrimethoxysilane, acetic acid, methanol and alkylphenol ethoxylates.
3. The negative oxygen ion interior wall decorative coating of claim 2, wherein the modified silane coupling agent is prepared by the following steps: mixing n-octyl trimethoxy silane and methanol, adding acetic acid and alkylphenol ethoxylates, stirring to mix completely, and heating in water bath at 150 deg.C for 15min to obtain the modified silane coupling agent.
4. The negative oxygen ion interior wall decorative coating of claim 1, wherein the pigment powder is a mixed powder of carbon black and any one of titanium dioxide, zinc white, iron yellow, iron red and molybdenum chromium red, and the mixing mass ratio is 2: 1.
5. The negative oxygen ion interior wall decorative coating of claim 1, wherein the bacteriostatic solution is prepared from 2, 6-dimethoxybenzoquinone, chitosan fiber and quercetin.
6. The negative oxygen ion interior wall decorative coating of claim 5, wherein the bacteriostatic solution is prepared by the following steps: grinding 2, 6-dimethoxy benzoquinone into powder, mixing with chitosan fiber and quercetin, adding water, mixing and stirring until completely fused, and heating in water bath at 75 deg.C for 15min to obtain antibacterial liquid.
7. The negative oxygen ion interior wall decorative coating of claim 1, wherein the modified mildew-proof reinforcing agent is prepared from monomethyl fumarate and 1-acetonitrile-3-methylimidazole bistrifluoromethylsulfonic acid imine, and the preparation method comprises the steps of adding 1-acetonitrile-3-methylimidazole bistrifluoromethylsulfonic acid imine into monomethyl fumarate, adding cyclohexanone, and stirring until complete fusion, thus obtaining the modified mildew-proof reinforcing agent.
8. The negative oxygen ion interior wall decorative coating of claim 7, wherein the synthesis method of the 1-acetonitrile-3-methylimidazole bis (trifluoromethyl) sulfonic acid imine comprises the following steps: dissolving the intermediate [ MCNMIM ] [ Cl ] in distilled water, adding bis (trifluoromethyl) sulfonimide lithium with equal molar mass into the distilled water, stirring the mixture for 3 hours at room temperature, standing the mixture, layering the mixture, and obtaining the ionic liquid 1-acetonitrile-3-methylimidazole bis (trifluoromethyl) sulfonimide as the upper layer and the lower layer of colorless transparent liquid.
9. A preparation method of negative oxygen ion interior wall decorative paint is characterized by comprising the following steps:
s1, weighing the raw materials according to the weight for later use;
s2, putting water, acrylic resin, tourmaline powder, sodium dodecyl benzene sulfonate, sodium alkyl aryl sulfonate, xylylenediamine and polydimethylsiloxane into a reaction kettle, heating to 65 ℃, and stirring uniformly;
s3, continuously adding the antibacterial liquid, the pigment powder and the modified mildew-proof reinforcing agent into the reaction kettle, and stirring until the antibacterial liquid, the pigment powder and the modified mildew-proof reinforcing agent are completely dissolved and uniformly dispersed, wherein the temperature in the stirring process is controlled to be 65-75 ℃;
s4, keeping the temperature at 65-75 ℃, adding activated alumina, a modified silane coupling agent and methyl cellulose, heating the temperature of the reaction kettle to 85 ℃, and stirring for 2-3 hours to obtain the finished coating.
10. The method as claimed in claim 9, wherein the rotation speed in S2 is 850-1000r/min, and the rotation speed in S4 is 900-1200 r/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011623578.4A CN112812635A (en) | 2020-12-31 | 2020-12-31 | Negative oxygen ion interior wall decorative coating and preparation method thereof |
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| CN202011623578.4A CN112812635A (en) | 2020-12-31 | 2020-12-31 | Negative oxygen ion interior wall decorative coating and preparation method thereof |
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