CN108929601B - Preparation method of antibacterial emulsion paint - Google Patents
Preparation method of antibacterial emulsion paint Download PDFInfo
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- CN108929601B CN108929601B CN201810629694.3A CN201810629694A CN108929601B CN 108929601 B CN108929601 B CN 108929601B CN 201810629694 A CN201810629694 A CN 201810629694A CN 108929601 B CN108929601 B CN 108929601B
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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
- C09D125/00—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 an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated 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
- C09D5/02—Emulsion paints including aerosols
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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
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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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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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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
- 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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Abstract
The invention discloses a preparation method of an antibacterial emulsion paint, which is mainly prepared from the following raw materials: 20-25 parts of base material, 1.5-2 parts of film forming additive, 0.6-0.8 part of dispersing agent, 0.4-0.5 part of defoaming agent, 0.1-0.5 part of flatting agent, 1-1.5 parts of organic bentonite, 10-15 parts of filler, 0.2-0.5 part of antibacterial agent, 10-15 parts of pigment, 22-30 parts of water and 0.4-0.6 part of hydroxyethyl cellulose. The emulsion paint disclosed by the invention has the characteristics of no peeling, high glossiness, strong weather resistance, no toxicity, good leveling property and easiness in construction, is resistant to washing, is non-toxic and harmless, and has fresh smell. The emulsion paint disclosed by the invention is stably combined with a wall body, has better construction performance and better antibacterial and bacteriostatic effects, and the bactericidal material is harmless to a human body and cannot cause environmental pollution.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a preparation method of an antibacterial emulsion paint.
Background
Latex paint is a common name of latex paint, is produced in the middle and late seventies of the twentieth century, and is a large class of synthetic resin emulsion paint represented by acrylate copolymer emulsion. The emulsion paint is water dispersive paint, which is prepared with synthetic resin emulsion as base material, stuffing, and assistants. The emulsion paint has the advantages different from the traditional wall paint, such as easy brushing, quick drying, water resistance of paint film, good scrubbing resistance and the like. In China, people are used to prepare a coating called latex paint or latex paint by taking synthetic resin emulsion as a base material, taking water as a dispersion medium, adding pigment, filler (also called bulk pigment) and an auxiliary agent and carrying out certain technological processes.
However, the traditional latex paint has no antibacterial effect, and in hospitals and children rooms, bacteria are easy to be infected easily due to the fact that the bacteria are adsorbed on walls when people accidentally contact the walls, so that harm is caused to bodies.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a preparation method of an antibacterial emulsion paint.
The technical problem to be solved by the invention is realized by the following technical scheme:
a preparation method of antibacterial emulsion paint comprises the following steps: (1) weighing the following raw materials according to a formula: 20-25 parts of base material, 1.5-2 parts of film forming additive, 0.6-0.8 part of dispersing agent, 0.4-0.5 part of defoaming agent, 0.1-0.5 part of flatting agent, 1-1.5 parts of organic bentonite, 10-15 parts of filler, 0.2-0.5 part of antibacterial agent, 10-15 parts of pigment, 22-30 parts of water and 0.4-0.6 part of hydroxyethyl cellulose; (2) adding water and hydroxyethyl cellulose into a stirring kettle for fully stirring and dispersing; (3) after the water and the hydroxyethyl fiber are fully mixed, continuously adding the antibacterial agent and the dispersing agent, and fully stirring and dispersing; (4) after the mixture in the step (3) is fully mixed, adding the pigment, the organic bentonite, the filler and the defoaming agent, and stirring and mixing; (5) and (4) after the mixture in the step (4) is fully mixed, adding the flatting agent, the film-forming assistant and the base material, mixing, injecting into a grinding machine, and stirring for 3-4 hours.
Further, the base material is formed by mixing styrene-acrylic emulsion, nano silica sol and modified polyurethane emulsion in a mass ratio of 3:1: 2.
Further, the preparation method of the modified polyurethane emulsion comprises the following steps: mixing the polyurethane emulsion with 1 time volume of absolute ethyl alcohol, putting the mixture into a sealed reaction kettle, heating the mixture to 135-fold temperature of 150 ℃, adding the nano expanded perlite powder, stirring the mixture for 20 minutes at the rotating speed of 800r/min, reducing the temperature in the reaction kettle to 80-85 ℃, continuing stirring the mixture for 6 minutes, adding the pectin and the corn starch, and stirring the mixture for 16-22 minutes to obtain the modified polyurethane emulsion.
Further, the mass ratio of the polyurethane emulsion to the nano expanded perlite powder to the pectin to the corn starch is 21:4:2: 11.
In the invention, the styrene-acrylic emulsion is often used as a base material of the building latex paint, plays an important role in the building decoration market, and has the advantages of fine particle size, proper viscosity, alkali resistance, scrub resistance, good calcium ion stability, high bonding strength, strong adhesive force and good filler bearing capacity; however, the inventors of the present invention found in practice that the tensile strength and film hardness of latex paints are still to be improved and the gloss is not good only with styrene-acrylic emulsion as a base material, and found through research that by adding modified polyurethane emulsion, hydrogen bonds are formed between molecules, and the combination of the hydrogen bonds firmly binds the latex paints after drying, so that the tensile strength, film hardness and gloss of the latex paints can be improved. However, after the styrene-acrylic emulsion and the modified polyurethane emulsion are added simultaneously, the spreadability of the latex paint and the fullness of the latex film cannot meet the requirements, therefore, the nano-silica sol is added, the nano-silica sol wraps water molecules, the terminal hydroxyl groups of the silica sol and the water molecules generate solvation to form firm Si-0-Si bonds, the combination degree of the nano-silica sol, the base material and the filler is increased, and the spreadability of the latex paint and the fullness of the latex film are enhanced.
In the present invention, water and hydroxyethyl cellulose are used as a matrix for dissolution, so that the latex paint has good dispersion viscosity. Hydroxyethyl cellulose is a white or light yellow, tasteless and nontoxic fibrous or powdery solid, is prepared by etherification reaction of alkali cellulose and ethylene oxide (or chloroethanol), and belongs to nonionic soluble cellulose ethers. Because the hydroxyethyl cellulose has the characteristics of good thickening, suspension, dispersion, emulsification, adhesion, film formation, moisture protection, protective colloid supply and the like, the hydroxyethyl cellulose has a protective effect on materials added in the later period, and simultaneously can increase the viscosity of the matrix, so that the filler cannot be settled.
Preferably, the water in the raw materials is purified water, and tap water contains more impurities due to the addition of bleaching powder and the like, which may cause poor storage stability of the interior wall latex paint product.
Further, the leveling agent comprises one or more of a polyurethane leveling agent, an organic silicon leveling agent and an acrylic leveling agent.
In the invention, the addition of a proper amount of the leveling agent can promote the emulsion paint to form a flat, smooth and uniform emulsion paint layer in the drying process, improve the permeability of the emulsion paint and reduce spots and scars generated during coating.
Further, the defoaming agent comprises one or more of liquid metal soap emulsion, mineral oil, polyether defoaming agent and silicone oil defoaming agent.
Further, the film-forming aid is propylene glycol phenyl ether and 2,2, 4-trimethyl-1, 3-pentanediol diisobutyrate, and the mass ratio of the two is 2: 1.
The film-forming additive provided by the invention selects propylene glycol phenyl ether and 2,2, 4-trimethyl-1, 3-pentanediol diisobutyrate, and the propylene glycol phenyl ether and the 2,2, 4-trimethyl-1, 3-pentanediol diisobutyrate are matched with each other and have a synergistic effect, so that when the latex system is added, redistribution is carried out in a water phase and a polymeric phase, and meanwhile, good plasticizing effect and proper volatilization rate balance of the latex paint are ensured, and the latex paint is endowed with the best coalescence performance and color-spreading uniformity.
Further, the dispersant is polyacrylamide.
Further, the filler is heavy calcium carbonate and talcum powder, and the mass ratio of the heavy calcium carbonate to the talcum powder is 1: 1. According to the invention, the heavy calcium carbonate and the talcum powder are selected as the filler, so that the cost is reduced, the mechanical strength and the thickness of a coating film can be increased, and a certain extinction effect is achieved.
Further, the antibacterial agent is prepared by mixing propolis powder, folium artemisiae argyi powder and modified coconut fibers in a mass ratio of 1:2: 1.
Further, the preparation method of the folium artemisiae argyi powder comprises the following steps: cleaning folium Artemisiae Argyi, and dehydrating by infrared radiation; then grinding and crushing the moxa by using nano grinding and crushing equipment to obtain the moxa powder with the nano particle size.
Further, the preparation method of the modified coconut fiber comprises the following steps: weighing coconut fiber powder, adding the coconut fiber powder into a sodium periodate solution, stirring at the rotating speed of 320r/min for 30-40min at 300-; wherein the mass ratio of the coconut fiber powder to the sodium periodate solution to the chitosan to the hydrogen peroxide solution is 15:12:5: 2.
In the invention, propolis is a viscous secretion collected by bees from tree buds or barks, researches show that the propolis has complex chemical compositions comprising more than thirty aromatic lipids, more than thirty flavonoid compounds, more than ten kinds of aromatic acids and the like, and the propolis is known as a 'natural small drug library', is a precious natural broad-spectrum antibiotic substance and has obvious inhibiting and killing effects on various bacteria, fungi, germs and the like. According to the invention, a proper amount of propolis powder, folium artemisiae argyi powder and modified coconut fibers are added, and the components are mutually compatible and synergized, so that the antibacterial effect is excellent, the antibacterial property of the emulsion paint is realized, and the service life of the emulsion paint is greatly prolonged; and the antibacterial agent component has high safety.
The inventor finds in practice that the phenomenon of poor homogeneity is easy to occur after the antibacterial agent of the invention is added, and the organic bentonite is added to help form a stable dispersion system to be cooperated with polyacrylamide to improve the processing feasibility of the latex paint, namely realize the uniform and stable latex paint.
The preparation method comprises the following steps: (1) weighing the following raw materials according to a formula: 20-25 parts of base material, 1.5-2 parts of film forming additive, 0.6-0.8 part of dispersing agent, 0.4-0.5 part of defoaming agent, 0.1-0.5 part of flatting agent, 1-1.5 parts of organic bentonite, 10-15 parts of filler, 0.2-0.5 part of antibacterial agent, 10-15 parts of pigment, 22-30 parts of water and 0.4-0.6 part of hydroxyethyl cellulose; (2) adding water and hydroxyethyl cellulose into a stirring kettle for fully stirring and dispersing; (3) after the water and the hydroxyethyl fiber are fully mixed, continuously adding the antibacterial agent and the dispersing agent, and fully stirring and dispersing; (4) after the mixture in the step (3) is fully mixed, adding the pigment, the organic bentonite, the filler and the defoaming agent, and stirring and mixing; (5) and (4) after the mixture in the step (4) is fully mixed, adding the flatting agent, the film-forming assistant and the base material, mixing, injecting into a grinding machine, and stirring for 3-4 hours.
The invention has the following beneficial effects:
the emulsion paint disclosed by the invention has the characteristics of no peeling, high glossiness, strong weather resistance, no toxicity, good leveling property and easiness in construction, is resistant to washing, is non-toxic and harmless, and has fresh smell.
The emulsion paint disclosed by the invention is stably combined with a wall body, has better construction performance and better antibacterial and bacteriostatic effects, and the bactericidal material is harmless to a human body and cannot cause environmental pollution.
Detailed Description
The present invention will be described in detail with reference to examples, which are only preferred embodiments of the present invention and are not intended to limit the present invention.
Example 1
The preparation method of the antibacterial emulsion paint is characterized by comprising the following raw materials in parts by weight: 22 parts of base material, 1.8 parts of film forming additive, 0.7 part of dispersing agent, 0.4 part of defoaming agent, 0.3 part of flatting agent, 1.2 parts of organic bentonite, 12 parts of filler, 0.3 part of antibacterial agent, 12 parts of pigment, 25 parts of water and 0.5 part of hydroxyethyl cellulose.
Wherein the base material is formed by mixing styrene-acrylic emulsion, nano silica sol and modified polyurethane emulsion in a mass ratio of 3:1: 2; the preparation method of the modified polyurethane emulsion comprises the following steps: mixing the polyurethane emulsion with 1 time volume of absolute ethyl alcohol, putting the mixture into a sealed reaction kettle, heating the mixture to 140 ℃, adding the nano expanded perlite powder, stirring the mixture for 20 minutes at a rotating speed of 700r/min, then reducing the temperature in the reaction kettle to 82 ℃, continuing stirring the mixture for 6 minutes, adding pectin and corn starch, and stirring the mixture for 19 minutes to obtain a modified polyurethane emulsion; the mass ratio of the polyurethane emulsion to the nano expanded perlite powder to the pectin to the corn starch is 21:4:2: 11.
The flatting agent is one or more of polyurethane flatting agent, organic silicon flatting agent and acrylic flatting agent.
The defoaming agent comprises one or more of liquid metal soap emulsion, mineral oil, polyether defoaming agent and silicone oil defoaming agent.
The film-forming additive is propylene glycol phenyl ether and 2,2, 4-trimethyl-1, 3-pentanediol diisobutyrate, and the mass ratio of the propylene glycol phenyl ether to the 2,2, 4-trimethyl-1, 3-pentanediol diisobutyrate is 2: 1; the dispersant is polyacrylamide; the filler is heavy calcium carbonate and talcum powder, and the mass ratio of the heavy calcium carbonate to the talcum powder is 1: 1.
The antibacterial agent is prepared by mixing propolis powder, folium artemisiae argyi powder and modified coconut fibers in a mass ratio of 1:2: 1; the preparation method of the folium artemisiae argyi powder comprises the following steps: cleaning folium Artemisiae Argyi, and dehydrating by infrared radiation; then grinding and crushing the moxa by using nano grinding and crushing equipment to obtain moxa powder with nano particle size; the preparation method of the modified coconut fiber comprises the following steps: weighing coconut fiber powder, adding the coconut fiber powder into a sodium periodate solution, stirring at a rotating speed of 310r/min for 35min, then adjusting to be neutral, sequentially adding chitosan and a hydrogen peroxide solution, carrying out ultrasonic treatment for 35min, filtering to obtain filter residue, putting the filter residue into an oven, and drying to obtain the modified coconut fiber; wherein the mass ratio of the coconut fiber powder to the sodium periodate solution to the chitosan to the hydrogen peroxide solution is 15:12:5: 2.
The preparation method comprises the following steps: (1) weighing the raw materials according to a formula; (2) adding water and hydroxyethyl cellulose into a stirring kettle for fully stirring and dispersing; (3) after the water and the hydroxyethyl fiber are fully mixed, continuously adding the antibacterial agent and the dispersing agent, and fully stirring and dispersing; (4) after the mixture in the step (3) is fully mixed, adding the pigment, the organic bentonite, the filler and the defoaming agent, and stirring and mixing; (5) and (4) after the mixture in the step (4) is fully mixed, adding the flatting agent, the film-forming assistant and the base material, mixing, injecting into a grinding machine, and stirring for 3-4 hours.
Example 2
The preparation method of the antibacterial emulsion paint is characterized by comprising the following raw materials in parts by weight: 20 parts of base material, 1.5 parts of film forming additive, 0.6 part of dispersing agent, 0.4 part of defoaming agent, 0.1 part of flatting agent, 1.5 parts of organic bentonite, 10 parts of filler, 0.2 part of antibacterial agent, 10 parts of pigment, 30 parts of water and 0.4.6 parts of hydroxyethyl cellulose.
Wherein the base material is formed by mixing styrene-acrylic emulsion, nano silica sol and modified polyurethane emulsion in a mass ratio of 3:1: 2; the preparation method of the modified polyurethane emulsion comprises the following steps: mixing the polyurethane emulsion with 1 time volume of absolute ethyl alcohol, putting the mixture into a sealed reaction kettle, heating the mixture to 135 ℃, adding the nano expanded perlite powder, stirring the mixture for 20 minutes at a rotating speed of 600r/min, then reducing the temperature in the reaction kettle to 80 ℃, continuing stirring the mixture for 6 minutes, adding pectin and corn starch, and stirring the mixture for 16 minutes to obtain a modified polyurethane emulsion; the mass ratio of the polyurethane emulsion to the nano expanded perlite powder to the pectin to the corn starch is 21:4:2: 11.
The flatting agent comprises one or more of polyurethane flatting agents, organic silicon flatting agents and acrylic flatting agents.
The defoaming agent comprises one or more of liquid metal soap emulsion, mineral oil, polyether defoaming agent and silicone oil defoaming agent.
The film-forming additive is propylene glycol phenyl ether and 2,2, 4-trimethyl-1, 3-pentanediol diisobutyrate, and the mass ratio of the propylene glycol phenyl ether to the 2,2, 4-trimethyl-1, 3-pentanediol diisobutyrate is 2: 1; the dispersant is polyacrylamide; the filler is heavy calcium carbonate and talcum powder, and the mass ratio of the heavy calcium carbonate to the talcum powder is 1: 1.
The antibacterial agent is prepared by mixing propolis powder, folium artemisiae argyi powder and modified coconut fibers in a mass ratio of 1:2: 1; the preparation method of the folium artemisiae argyi powder comprises the following steps: cleaning folium Artemisiae Argyi, and dehydrating by infrared radiation; then grinding and crushing the moxa by using nano grinding and crushing equipment to obtain moxa powder with nano particle size; the preparation method of the modified coconut fiber comprises the following steps: weighing coconut fiber powder, adding the coconut fiber powder into a sodium periodate solution, stirring at the rotating speed of 300r/min for 30min, then adjusting to be neutral, sequentially adding chitosan and a hydrogen peroxide solution, carrying out ultrasonic treatment for 30min, filtering to obtain filter residue, putting the filter residue into an oven, and drying to obtain the modified coconut fiber; wherein the mass ratio of the coconut fiber powder to the sodium periodate solution to the chitosan to the hydrogen peroxide solution is 15:12:5: 2.
The preparation method comprises the following steps: (1) weighing the raw materials according to a formula; (2) adding water and hydroxyethyl cellulose into a stirring kettle for fully stirring and dispersing; (3) after the water and the hydroxyethyl fiber are fully mixed, continuously adding the antibacterial agent and the dispersing agent, and fully stirring and dispersing; (4) after the mixture in the step (3) is fully mixed, adding the pigment, the organic bentonite, the filler and the defoaming agent, and stirring and mixing; (5) and (4) after the mixture in the step (4) is fully mixed, adding the flatting agent, the film-forming assistant and the base material, mixing, injecting into a grinding machine, and stirring for 3-4 hours.
Example 3
The preparation method of the antibacterial emulsion paint is characterized by comprising the following raw materials in parts by weight: 25 parts of base material, 2 parts of film forming additive, 0.8 part of dispersing agent, 0.5 part of defoaming agent, 0.5 part of flatting agent, 1 part of organic bentonite, 15 parts of filler, 0.5 part of antibacterial agent, 15 parts of pigment, 22 parts of water and 0.6 part of hydroxyethyl cellulose.
Wherein the base material is formed by mixing styrene-acrylic emulsion, nano silica sol and modified polyurethane emulsion in a mass ratio of 3:1: 2; the preparation method of the modified polyurethane emulsion comprises the following steps: mixing the polyurethane emulsion with absolute ethyl alcohol with the volume of 1 time, putting the mixture into a sealed reaction kettle, heating the mixture to 150 ℃, adding the nano expanded perlite powder, stirring the mixture for 20 minutes at the rotating speed of 800r/min, then reducing the temperature in the reaction kettle to 85 ℃, continuing stirring the mixture for 6 minutes, adding pectin and corn starch, and stirring the mixture for 22 minutes to obtain a modified polyurethane emulsion; the mass ratio of the polyurethane emulsion to the nano expanded perlite powder to the pectin to the corn starch is 21:4:2: 11.
The flatting agent comprises one or more of polyurethane flatting agents, organic silicon flatting agents and acrylic flatting agents.
The defoaming agent comprises one or more of liquid metal soap emulsion, mineral oil, polyether defoaming agent and silicone oil defoaming agent.
The film-forming additive is propylene glycol phenyl ether and 2,2, 4-trimethyl-1, 3-pentanediol diisobutyrate, and the mass ratio of the propylene glycol phenyl ether to the 2,2, 4-trimethyl-1, 3-pentanediol diisobutyrate is 2: 1; the dispersant is polyacrylamide; the filler is heavy calcium carbonate and talcum powder, and the mass ratio of the heavy calcium carbonate to the talcum powder is 1: 1.
The antibacterial agent is prepared by mixing propolis powder, folium artemisiae argyi powder and modified coconut fibers in a mass ratio of 1:2: 1; the preparation method of the folium artemisiae argyi powder comprises the following steps: cleaning folium Artemisiae Argyi, and dehydrating by infrared radiation; then grinding and crushing the moxa by using nano grinding and crushing equipment to obtain moxa powder with nano particle size; the preparation method of the modified coconut fiber comprises the following steps: weighing coconut fiber powder, adding the coconut fiber powder into a sodium periodate solution, stirring at the rotating speed of 320r/min for 40min, then adjusting to be neutral, sequentially adding chitosan and a hydrogen peroxide solution, carrying out ultrasonic treatment for 40min, filtering to obtain filter residue, putting the filter residue into an oven, and drying to obtain the modified coconut fiber; wherein the mass ratio of the coconut fiber powder to the sodium periodate solution to the chitosan to the hydrogen peroxide solution is 15:12:5: 2.
The preparation method comprises the following steps: (1) weighing the raw materials according to a formula; (2) adding water and hydroxyethyl cellulose into a stirring kettle for fully stirring and dispersing; (3) after the water and the hydroxyethyl fiber are fully mixed, continuously adding the antibacterial agent and the dispersing agent, and fully stirring and dispersing; (4) after the mixture in the step (3) is fully mixed, adding the pigment, the organic bentonite, the filler and the defoaming agent, and stirring and mixing; (5) and (4) after the mixture in the step (4) is fully mixed, adding the flatting agent, the film-forming assistant and the base material, mixing, injecting into a grinding machine, and stirring for 3-4 hours.
The above-mentioned embodiments only express the embodiments of the present invention, and the description is more specific and detailed, but not understood as the limitation of the patent scope of the present invention, but all the technical solutions obtained by using the equivalent substitution or the equivalent transformation should fall within the protection scope of the present invention.
Claims (1)
1. The preparation method of the antibacterial emulsion paint is characterized by comprising the following raw materials in parts by weight: 22 parts of base stock, 1.8 parts of film-forming additive, 0.7 part of dispersant, 0.4 part of defoamer, 0.3 part of flatting agent, 1.2 parts of organic bentonite, 12 parts of filler, 0.3 part of antibacterial agent, 12 parts of pigment, 25 parts of water and 0.5 part of hydroxyethyl cellulose;
wherein the base material is formed by mixing styrene-acrylic emulsion, nano silica sol and modified polyurethane emulsion in a mass ratio of 3:1: 2; the preparation method of the modified polyurethane emulsion comprises the following steps: mixing the polyurethane emulsion with 1 time volume of absolute ethyl alcohol, putting the mixture into a sealed reaction kettle, heating the mixture to 140 ℃, adding the nano expanded perlite powder, stirring the mixture for 20 minutes at a rotating speed of 700r/min, then reducing the temperature in the reaction kettle to 82 ℃, continuing stirring the mixture for 6 minutes, adding pectin and corn starch, and stirring the mixture for 19 minutes to obtain a modified polyurethane emulsion; the mass ratio of the polyurethane emulsion to the nano expanded perlite powder to the pectin to the corn starch is 21:4:2: 11; the flatting agent is one or more of polyurethane flatting agent, organic silicon flatting agent and acrylic flatting agent; the defoaming agent comprises one or more of liquid metal soap emulsion, mineral oil, polyether defoaming agent and silicone oil defoaming agent; the film-forming additive is propylene glycol phenyl ether and 2,2, 4-trimethyl-1, 3-pentanediol diisobutyrate, and the mass ratio of the propylene glycol phenyl ether to the 2,2, 4-trimethyl-1, 3-pentanediol diisobutyrate is 2: 1; the dispersant is polyacrylamide; the filler is heavy calcium carbonate and talcum powder, and the mass ratio of the heavy calcium carbonate to the talcum powder is 1: 1; the antibacterial agent is prepared by mixing propolis powder, folium artemisiae argyi powder and modified coconut fibers in a mass ratio of 1:2: 1; the preparation method of the folium artemisiae argyi powder comprises the following steps: cleaning folium Artemisiae Argyi, and dehydrating by infrared radiation; then grinding and crushing the moxa by using nano grinding and crushing equipment to obtain moxa powder with nano particle size; the preparation method of the modified coconut fiber comprises the following steps: weighing coconut fiber powder, adding the coconut fiber powder into a sodium periodate solution, stirring at a rotating speed of 310r/min for 35min, then adjusting to be neutral, sequentially adding chitosan and a hydrogen peroxide solution, carrying out ultrasonic treatment for 35min, filtering to obtain filter residue, putting the filter residue into an oven, and drying to obtain the modified coconut fiber; wherein the mass ratio of the coconut fiber powder to the sodium periodate solution to the chitosan to the hydrogen peroxide solution is 15:12:5: 2;
the preparation method of the antibacterial emulsion paint comprises the following steps: (1) weighing the raw materials according to a formula; (2) adding water and hydroxyethyl cellulose into a stirring kettle for fully stirring and dispersing; (3) after the water and the hydroxyethyl fiber are fully mixed, continuously adding the antibacterial agent and the dispersing agent, and fully stirring and dispersing; (4) after the mixture in the step (3) is fully mixed, adding the pigment, the organic bentonite, the filler and the defoaming agent, and stirring and mixing; (5) and (4) after the mixture in the step (4) is fully mixed, adding the flatting agent, the film-forming assistant and the base material, mixing, injecting into a grinding machine, and stirring for 3-4 hours.
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| CN1458199A (en) * | 2002-05-14 | 2003-11-26 | 高学江 | Health type nano composite antibiotic emulsion paint |
| CN1273551C (en) * | 2002-08-07 | 2006-09-06 | 张贵洲 | Nano composite inner wall antiseptic emulsion paint |
| CN101602911A (en) * | 2009-07-09 | 2009-12-16 | 天津灯塔涂料工业发展有限公司 | Inner wall antiseptic emulsion paint and preparation method thereof |
| CN105062262A (en) * | 2015-08-05 | 2015-11-18 | 天长市开林化工有限公司 | Building interior wall special-purpose antibacterial mildew-resistant emulsion paint |
| CN105086536A (en) * | 2015-08-05 | 2015-11-25 | 天长市开林化工有限公司 | Special high-performance emulsion paint for building external wall |
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