CN112280428A - Preparation process of water-based paint - Google Patents
Preparation process of water-based paint Download PDFInfo
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- CN112280428A CN112280428A CN202011174675.XA CN202011174675A CN112280428A CN 112280428 A CN112280428 A CN 112280428A CN 202011174675 A CN202011174675 A CN 202011174675A CN 112280428 A CN112280428 A CN 112280428A
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- C09D5/08—Anti-corrosive paints
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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
- 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
- C09D5/18—Fireproof paints including high temperature resistant paints
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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
- C09D5/36—Pearl essence, e.g. coatings containing platelet-like pigments for pearl lustre
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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
- 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
- C09D7/63—Additives non-macromolecular organic
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/80—Processes for incorporating ingredients
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
Abstract
The invention discloses a preparation process of a water-based paint, which has the technical scheme that: the method specifically comprises the following steps: s1, preparing raw materials; s2, preprocessing materials; s3, primary dispersing of the slurry; s4, secondarily dispersing the slurry; s5, mixing and dispersing; s6, adding an auxiliary agent; s7, defoaming in vacuum; the nano modified inorganic fireproof resin is adopted in the water-based paint prepared by the process, experiments show that the water-based paint has good fireproof performance, the surface of the water-based paint is bright due to the adoption of the pearl powder, and the water-based paint has good light gathering performance, and experiments prove that the water-based paint not only can promote the uniform dispersion performance of the water-based paint, but also can improve the mildew resistance and the corrosion resistance of the water-based paint due to the creative addition of the preservative and the mildew preventive in the water-based paint.
Description
Technical Field
The invention relates to the field of paint preparation, and particularly relates to a preparation process of a water-based paint.
Background
The paint is a mixture of high molecular substance and ingredients, and can be coated on the surface of a base material to form a novel high molecular material of a firmly-adhered continuous coating film. The water-soluble paint is a paint taking water-soluble resin as a base material and water as a solvent, and the water-soluble paint has a tendency of gradually replacing an organic solvent type paint.
The existing Chinese patent with publication number CN110845932A discloses a preparation process of a water-based paint, which comprises the following steps: and step S1: according to the weight parts, benzoyl peroxide is dissolved in the mixed acrylate monomer, then the benzoyl peroxide is mixed with the modified polyurethane, and the mixture is stirred for 2 to 3 hours at the temperature of between 50 and 55 ℃ until the modified polyurethane is completely dissolved to prepare a first mixed solution; and step S2: mixing the first mixed solution with a sodium dodecyl sulfate solution with the concentration of 0.02-0.03mol/L, and performing magnetic stirring for 20-30min and ultrasonic dispersion for 30-40min to obtain a second mixed solution; and step S3: slowly dripping 0.02-0.03mol/L potassium persulfate solution into the second mixed solution at the temperature of 70-80 ℃ and the stirring speed of 200-500r/min under the protection of nitrogen atmosphere, keeping the solution for 5-6h under the condition of microwave for hybrid polymerization, and performing ultrasonic dispersion for 20-30min to obtain the hybrid emulsion.
The preparation process of the water-based paint further improves the mechanical property and weather resistance of the alkyd resin paint, but the preparation process of the water-based paint still has some disadvantages; the production and preparation process is complex, the occupied area is large, and the operation and the production are inconvenient; the water-based paint produced by the method does not have good fire resistance and is easy to mildew.
Disclosure of Invention
In view of the problems mentioned in the background, the present invention is to provide a preparation process of water-based paint, so as to solve the problems mentioned in the background.
The technical purpose of the invention is realized by the following technical scheme:
a preparation process of a water-based paint specifically comprises the following steps:
s1, preparing raw materials: selecting the following components by weight for later use: 50-60 parts of epoxy resin, 60-70 parts of nano modified inorganic fireproof resin, 40-50 parts of pearl powder, 20-30 parts of methyl ether, 10-20 parts of isooctanol, 15-30 parts of diethanolamine, 5-10 parts of polyamine resin, 10-20 parts of carboxylic acid, 5-10 parts of propylene glycol methyl ether, 10-15 parts of tributyl phosphate, 5-8 parts of propylene glycol antifreezing agent, 10-15 parts of preservative, 5-10 parts of mildew preventive, 5-10 parts of DA dispersant, 500 parts of water 300 and 20-30 parts of aromatic;
s2, pretreatment of materials: putting the epoxy resin, the nano modified inorganic fireproof resin and the pearl powder in the S1 into a grinding machine for grinding and mixing until the fineness is less than 20 meshes;
s3, primary dispersion of slurry: pouring water into the kettle body, sequentially adding methyl ether, isooctanol, diethanolamine, polyamine resin, carboxylic acid, propylene glycol methyl ether and tributyl phosphate into the kettle body, starting a dispersion motor on the kettle body for primary dispersion, controlling the rotating speed of the dispersion motor to be 2000-2200r/min, and controlling the dispersion time to be 20-30 min;
s4, secondary dispersion of slurry: heating the temperature in the kettle to 60-70 ℃, then starting a dispersion motor to perform secondary dispersion, controlling the rotation speed of the dispersion motor to be 800-;
s5, mixing and dispersing: the material obtained after the pretreatment of the S2 material is added into the solution obtained by the secondary dispersion of the S4 slurry, wherein the material obtained after the pretreatment of the S2 material is heated to 80-90 ℃ before being added;
s6, adding an auxiliary agent: sequentially adding a propylene glycol antifreezing agent, a preservative, a mildew preventive and a DA dispersing agent, starting a dispersing motor on the kettle body for dispersing, and controlling the dispersing speed to be 2300-2400r/min and the dispersing time to be 40-50 min;
s7, vacuum defoaming: and vacuumizing the interior of the kettle body by using a vacuum pump, and vacuumizing the pressure in the kettle body to 0.01 Mpa.
Preferably, the preservative comprises a mixture of 2: 1: 3: 1, acetylsalicylic acid, 8-hydroxyquinoline and 2-benzimidazolecarbamate.
Preferably, the mildew preventive comprises the following components in a mass ratio of 2: 1: 1.5 dibutyl phthalate, white bamboo charcoal powder and polyethylene wax emulsion.
Preferably, when the S3 slurry is initially dispersed, a film-forming aid is filled into the reaction kettle, and the film-forming aid is polyoxyethylene alkyl propenyl phenyl ether sulfonate.
Preferably, the aromatic agent is filled into the kettle body when the S4 slurry is secondarily dispersed.
Preferably, the preparation process of the aromatic comprises the following steps:
the method comprises the following steps: selecting the following components by weight for later use: 30-40 parts of lemon peel, 20-30 parts of orange peel, 50-60 parts of rose, 30-40 parts of pomegranate peel, 10-15 parts of agar, 5-10 parts of carrageenan, 8-12 parts of sodium stearate and 130 parts of distilled water;
step two: adding the lemon slices, the orange peels, the roses and the pomegranate peels in the step one into a high-pressure cooker, cooking for 30min, and filtering to obtain clear liquid for later use after cooking;
step three: transferring the clear liquid in the second step into a reaction kettle, adding agar, carrageenan and sodium stearate, heating the reaction kettle to 80-90 ℃, and preserving the temperature for 20-30 min; after cooling, a fragrance is obtained.
Preferably, sodium sulfite dispersant is also added when the S6 auxiliary agent is added.
Preferably, a defoaming agent is added into the kettle body during the vacuum defoaming of S7, wherein the defoaming agent comprises the following components in parts by weight: fatty alcohol: polydimethylsiloxane 1: 1.5.
preferably, the raw material preparation step of S1 is to select the following components by weight: 55-60 parts of epoxy resin, 64-68 parts of nano modified inorganic fireproof resin, 43-48 parts of pearl powder, 25-30 parts of methyl ether, 13-20 parts of isooctanol, 20-30 parts of diethanolamine, 5-10 parts of polyamine resin, 10-20 parts of carboxylic acid, 5-10 parts of propylene glycol methyl ether, 10-15 parts of tributyl phosphate, 5-8 parts of propylene glycol antifreezing agent, 10-15 parts of preservative, 5-10 parts of mildew preventive, 5-10 parts of DA dispersant, 450 parts of water 400-.
In summary, the invention mainly has the following beneficial effects:
the preparation process of the water-based paint can realize the manufacture of the water-based paint through the processes of raw material preparation, material pretreatment, slurry primary dispersion, slurry secondary dispersion, mixed dispersion, auxiliary agent addition, vacuum defoaming and the like, and can prepare the water-based paint through the processes of preparation of raw materials, material pretreatment, slurry primary dispersion, slurry secondary dispersion, mixed dispersion, auxiliary agent addition, vacuum defoaming and the like, and the preparation process is simple and convenient and quick to manufacture;
the water-based paint prepared by the preparation process of the water-based paint adopts the nano modified inorganic fireproof resin, and experiments show that the water-based paint has good fire resistance, the surface of the water-based paint is bright due to the adoption of the pearl powder, and the water-based paint has good light gathering performance.
Drawings
FIG. 1 is a process flow diagram of a process for preparing a waterborne coating.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, a preparation process of a water-based paint specifically includes the following steps:
s1, preparing raw materials: selecting the following components by weight for later use: 50 parts of epoxy resin, 60 parts of nano modified inorganic fireproof resin, 40 parts of pearl powder, 20 parts of methyl ether, 10 parts of isooctanol, 15 parts of diethanol amine, 5 parts of polyamine resin, 10 parts of carboxylic acid, 5 parts of propylene glycol methyl ether, 10 parts of tributyl phosphate, 5 parts of propylene glycol antifreezing agent, 10 parts of preservative, 5 parts of mildew preventive, 5 parts of DA dispersant, 300 parts of water and 20 parts of aromatic;
s2, pretreatment of materials: putting the epoxy resin, the nano modified inorganic fireproof resin and the pearl powder in the S1 into a grinder, grinding and mixing until the fineness is 15 meshes;
s3, primary dispersion of slurry: pouring water into the kettle body, sequentially adding methyl ether, isooctanol, diethanolamine, polyamine resin, carboxylic acid, propylene glycol methyl ether and tributyl phosphate into the kettle body, starting a dispersion motor on the kettle body to carry out primary dispersion, controlling the rotating speed of the dispersion motor to be 2000r/min, and controlling the dispersion time to be 20 min;
s4, secondary dispersion of slurry: heating the temperature in the kettle to 60 ℃, then starting a dispersion motor to perform secondary dispersion, controlling the rotation speed of the dispersion motor to be 800r/min, and controlling the dispersion time to be 10 min;
s5, mixing and dispersing: the material obtained after the pretreatment of the S2 material is added into the solution obtained by the secondary dispersion of the S4 slurry, wherein the material obtained after the pretreatment of the S2 material is heated to 80 ℃ before being added;
s6, adding an auxiliary agent: sequentially adding a propylene glycol antifreezing agent, a preservative, a mildew preventive and a DA dispersing agent, starting a dispersing motor on the kettle body to disperse, and controlling the dispersing speed to be 2300r/min and the dispersing time to be 40 min;
s7, vacuum defoaming: and vacuumizing the interior of the kettle body by using a vacuum pump, and vacuumizing the pressure in the kettle body to 0.01 Mpa.
Wherein, the preservative comprises the following components in percentage by mass: 1: 3: 1, acetylsalicylic acid, 8-hydroxyquinoline and 2-benzimidazolecarbamate.
Wherein, the mildew preventive comprises the following components in percentage by mass of 2: 1: 1.5 dibutyl phthalate, white bamboo charcoal powder and polyethylene wax emulsion.
Wherein, when the S3 slurry is initially dispersed, a film-forming aid is filled in the reaction kettle, and the film-forming aid is polyoxyethylene alkyl propenyl phenyl ether sulfonate.
Wherein, when the S4 slurry is dispersed for the second time, the aromatic agent is filled into the kettle body.
The preparation process of the aromatic comprises the following steps:
the method comprises the following steps: selecting the following components by weight for later use: 30 parts of lemon peel, 20 parts of orange peel, 50 parts of rose, 30 parts of pomegranate peel, 10 parts of agar, 5 parts of carrageenan, 8 parts of sodium stearate and 100 parts of distilled water;
step two: adding the lemon slices, the orange peels, the roses and the pomegranate peels in the step one into a high-pressure cooker, cooking for 30min, and filtering to obtain clear liquid for later use after cooking;
step three: transferring the clear liquid in the step two into a reaction kettle, adding agar, carrageenan and sodium stearate, heating the temperature in the reaction kettle to 80 ℃, and preserving the temperature for 20 min; after cooling, a fragrance is obtained.
Wherein, sodium sulfite dispersant is also added when the S6 auxiliary agent is added.
Wherein, when S7 vacuum defoaming, defoaming agent is filled in the kettle body, and the defoaming agent comprises the following components in parts by weight: fatty alcohol: polydimethylsiloxane 1: 1.5.
the analysis shows that: the preparation process of the water-based paint can realize the manufacture of the water-based paint through processes such as raw material preparation, material pretreatment, slurry primary dispersion, slurry secondary dispersion, mixing dispersion, auxiliary agent addition, vacuum defoaming and the like, and can prepare the water-based paint through processes such as simple process flow and convenient and quick manufacture; the water-based paint prepared by the preparation process of the water-based paint adopts the nano modified inorganic fireproof resin, and experiments show that the water-based paint has good fire resistance, and the pearl powder is adopted, so the surface of the water-based paint is bright and has good light gathering performance.
Example 2
Referring to fig. 1, a preparation process of a water-based paint specifically includes the following steps:
s1, preparing raw materials: selecting the following components by weight for later use: 60 parts of epoxy resin, 70 parts of nano modified inorganic fireproof resin, 50 parts of pearl powder, 30 parts of methyl ether, 20 parts of isooctanol, 30 parts of diethanol amine, 10 parts of polyamine resin, 20 parts of carboxylic acid, 10 parts of propylene glycol methyl ether, 15 parts of tributyl phosphate, 8 parts of propylene glycol antifreezing agent, 15 parts of preservative, 10 parts of mildew preventive, 10 parts of DA dispersant, 500 parts of water and 30 parts of aromatic;
s2, pretreatment of materials: putting the epoxy resin, the nano modified inorganic fireproof resin and the pearl powder in the S1 into a grinding machine for grinding and mixing until the fineness is 10 meshes;
s3, primary dispersion of slurry: pouring water into the kettle body, sequentially adding methyl ether, isooctanol, diethanolamine, polyamine resin, carboxylic acid, propylene glycol methyl ether and tributyl phosphate into the kettle body, starting a dispersion motor on the kettle body to carry out primary dispersion, controlling the rotating speed of the dispersion motor to be 2200r/min, and controlling the dispersion time to be 30 min;
s4, secondary dispersion of slurry: heating the temperature in the kettle to 70 ℃, then starting a dispersion motor to perform secondary dispersion, controlling the rotation speed of the dispersion motor to be 1000r/min, and controlling the dispersion time to be 20 min;
s5, mixing and dispersing: the material obtained after the pretreatment of the S2 material is added into the solution obtained by the secondary dispersion of the S4 slurry, wherein the material obtained after the pretreatment of the S2 material is heated to 90 ℃ before being added;
s6, adding an auxiliary agent: sequentially adding a propylene glycol antifreezing agent, a preservative, a mildew preventive and a DA dispersing agent, starting a dispersing motor on the kettle body to disperse, and controlling the dispersing speed to be 2400r/min and the dispersing time to be 50 min;
s7, vacuum defoaming: and vacuumizing the interior of the kettle body by using a vacuum pump, and vacuumizing the pressure in the kettle body to 0.01 Mpa.
Wherein, the preservative comprises the following components in percentage by mass of 2: 1: 3: 1, acetylsalicylic acid, 8-hydroxyquinoline and 2-benzimidazolecarbamate.
Wherein the mildew preventive comprises the following components in percentage by mass of 2: 1: 1.5 dibutyl phthalate, white bamboo charcoal powder and polyethylene wax emulsion.
When the S3 slurry is initially dispersed, a film-forming aid is filled into the reaction kettle, and the film-forming aid is polyoxyethylene alkyl propenyl phenyl ether sulfonate.
Wherein, when the S4 slurry is dispersed for the second time, the aromatic agent is filled into the kettle body.
The preparation process of the aromatic comprises the following steps:
the method comprises the following steps: selecting the following components by weight for later use: 40 parts of lemon peel, 30 parts of orange peel, 60 parts of rose, 40 parts of pomegranate peel, 15 parts of agar, 10 parts of carrageenan, 12 parts of sodium stearate and 130 parts of distilled water;
step two: adding the lemon slices, the orange peels, the roses and the pomegranate peels in the step one into a high-pressure cooker, cooking for 30min, and filtering to obtain clear liquid for later use after cooking;
step three: transferring the clear liquid in the second step into a reaction kettle, adding agar, carrageenan and sodium stearate, heating the temperature in the reaction kettle to 90 ℃, and preserving the temperature for 30 min; after cooling, a fragrance is obtained.
Wherein, sodium sulfite dispersant is also added when the S6 auxiliary agent is added.
Wherein a defoaming agent is added into the kettle body during vacuum defoaming of S7, and the defoaming agent comprises the following components in parts by weight: fatty alcohol: polydimethylsiloxane 1: 1.5.
example 3
Referring to fig. 1, a preparation process of a water-based paint specifically includes the following steps:
s1, preparing raw materials: selecting the following components by weight for later use: 56 parts of epoxy resin, 65 parts of nano modified inorganic fireproof resin, 44 parts of pearl powder, 23 parts of methyl ether, 17 parts of isooctanol, 22 parts of diethanol amine, 8 parts of polyamine resin, 16 parts of carboxylic acid, 8 parts of propylene glycol methyl ether, 13 parts of tributyl phosphate, 6 parts of propylene glycol antifreeze, 10 parts of preservative, 5 parts of mildew preventive, 5 parts of DA dispersant, 300 parts of water and 20 parts of aromatic;
s2, pretreatment of materials: putting the epoxy resin, the nano modified inorganic fireproof resin and the pearl powder in the S1 into a grinding machine for grinding and mixing until the fineness is 18 meshes;
s3, primary dispersion of slurry: pouring water into the kettle body, sequentially adding methyl ether, isooctanol, diethanolamine, polyamine resin, carboxylic acid, propylene glycol methyl ether and tributyl phosphate into the kettle body, starting a dispersion motor on the kettle body to carry out primary dispersion, controlling the rotating speed of the dispersion motor to be 2100r/min, and controlling the dispersion time to be 25 min;
s4, secondary dispersion of slurry: heating the temperature in the kettle to 66 ℃, then starting a dispersion motor to perform secondary dispersion, controlling the rotation speed of the dispersion motor to be 900r/min, and controlling the dispersion time to be 18 min;
s5, mixing and dispersing: the material obtained after the pretreatment of the S2 material is added into the solution obtained by the secondary dispersion of the S4 slurry, wherein the material obtained after the pretreatment of the S2 material is heated to 90 ℃ before being added;
s6, adding an auxiliary agent: sequentially adding a propylene glycol antifreezing agent, a preservative, a mildew preventive and a DA dispersing agent, starting a dispersing motor on the kettle body to disperse, and controlling the dispersing speed to be 2350r/min and the dispersing time to be 45 min;
s7, vacuum defoaming: and vacuumizing the interior of the kettle body by using a vacuum pump, and vacuumizing the pressure in the kettle body to 0.01 Mpa.
Wherein, the preservative comprises the following components in percentage by mass of 2: 1: 3: 1, acetylsalicylic acid, 8-hydroxyquinoline and 2-benzimidazolecarbamate.
Wherein the mildew preventive comprises the following components in percentage by mass of 2: 1: 1.5 dibutyl phthalate, white bamboo charcoal powder and polyethylene wax emulsion.
When the S3 slurry is initially dispersed, a film-forming aid is filled into the reaction kettle, and the film-forming aid is polyoxyethylene alkyl propenyl phenyl ether sulfonate.
Wherein, when the S4 slurry is dispersed for the second time, the aromatic agent is filled into the kettle body.
The preparation process of the aromatic comprises the following steps:
the method comprises the following steps: selecting the following components by weight for later use: 36 parts of lemon peel, 25 parts of orange peel, 55 parts of rose, 34 parts of pomegranate peel, 10 parts of agar, 5 parts of carrageenan, 8 parts of sodium stearate and 100 parts of distilled water;
step two: adding the lemon slices, the orange peels, the roses and the pomegranate peels in the step one into a high-pressure cooker, cooking for 30min, and filtering to obtain clear liquid for later use after cooking;
step three: transferring the clear liquid in the second step into a reaction kettle, adding agar, carrageenan and sodium stearate, heating the temperature in the reaction kettle to 86 ℃, and keeping the temperature for 28 min; after cooling, a fragrance is obtained.
Preferably, sodium sulfite dispersant is also added when the S6 auxiliary agent is added.
Preferably, a defoaming agent is added into the kettle body during the vacuum defoaming of S7, wherein the defoaming agent comprises the following components in parts by weight: fatty alcohol: polydimethylsiloxane 1: 1.5.
example 4
Referring to fig. 1, a preparation process of a water-based paint specifically includes the following steps:
s1, preparing raw materials: selecting the following components by weight for later use: 60 parts of epoxy resin, 70 parts of nano modified inorganic fireproof resin, 50 parts of pearl powder, 30 parts of methyl ether, 20 parts of isooctanol, 30 parts of diethanol amine, 8 parts of polyamine resin, 15 parts of carboxylic acid, 8 parts of propylene glycol methyl ether, 13 parts of tributyl phosphate, 7 parts of propylene glycol antifreezing agent, 13 parts of preservative, 8 parts of mildew preventive, 8 parts of DA dispersant, 450 parts of water and 30 parts of aromatic;
s2, pretreatment of materials: putting the epoxy resin, the nano modified inorganic fireproof resin and the pearl powder in the S1 into a grinding machine for grinding and mixing until the fineness is 8 meshes;
s3, primary dispersion of slurry: pouring water into the kettle body, sequentially adding methyl ether, isooctanol, diethanolamine, polyamine resin, carboxylic acid, propylene glycol methyl ether and tributyl phosphate into the kettle body, starting a dispersion motor on the kettle body to carry out primary dispersion, controlling the rotating speed of the dispersion motor to be 2150r/min, and controlling the dispersion time to be 20 min;
s4, secondary dispersion of slurry: heating the temperature in the kettle to 63 ℃, then starting a dispersion motor to perform secondary dispersion, controlling the rotation speed of the dispersion motor to be 800r/min, and controlling the dispersion time to be 10 min;
s5, mixing and dispersing: the material obtained after the pretreatment of the S2 material is added into the solution obtained by the secondary dispersion of the S4 slurry, wherein the material obtained after the pretreatment of the S2 material is heated to 80 ℃ before being added;
s6, adding an auxiliary agent: sequentially adding a propylene glycol antifreezing agent, a preservative, a mildew preventive and a DA dispersing agent, starting a dispersing motor on the kettle body to disperse, and controlling the dispersing speed to be 2300r/min and the dispersing time to be 40 min;
s7, vacuum defoaming: and vacuumizing the interior of the kettle body by using a vacuum pump, and vacuumizing the pressure in the kettle body to 0.01 Mpa.
Wherein, the preservative comprises the following components in percentage by mass of 2: 1: 3: 1, acetylsalicylic acid, 8-hydroxyquinoline and 2-benzimidazolecarbamate.
Wherein the mildew preventive comprises the following components in percentage by mass of 2: 1: 1.5 dibutyl phthalate, white bamboo charcoal powder and polyethylene wax emulsion.
When the S3 slurry is initially dispersed, a film-forming aid is filled into the reaction kettle, and the film-forming aid is polyoxyethylene alkyl propenyl phenyl ether sulfonate.
Wherein, when the S4 slurry is dispersed for the second time, the aromatic agent is filled into the kettle body.
The preparation process of the aromatic comprises the following steps:
the method comprises the following steps: selecting the following components by weight for later use: 36 parts of lemon peel, 20 parts of orange peel, 50 parts of rose, 40 parts of pomegranate peel, 12 parts of agar, 7 parts of carrageenan, 10 parts of sodium stearate and 110 parts of distilled water;
step two: adding the lemon slices, the orange peels, the roses and the pomegranate peels in the step one into a high-pressure cooker, cooking for 30min, and filtering to obtain clear liquid for later use after cooking;
step three: transferring the clear liquid in the second step into a reaction kettle, adding agar, carrageenan and sodium stearate, heating the temperature in the reaction kettle to 90 ℃, and preserving the temperature for 30 min; after cooling, a fragrance is obtained.
Wherein, sodium sulfite dispersant is also added when the S6 auxiliary agent is added.
Wherein a defoaming agent is added into the kettle body during vacuum defoaming of S7, and the defoaming agent comprises the following components in parts by weight: fatty alcohol: polydimethylsiloxane 1: 1.5.
experiments were conducted on the water-based paint obtained in examples 1 to 4, which is a water-based epoxy paint (manufactured by Shishi paint Co., Ltd., Tianjin) sold in the market at present; the experimental contents and results are as follows:
the adhesion (surface hardness and peel strength) when it was coated on the surface of stainless steel was measured, and the results are shown below, with reference to water-based paint-water-based epoxy paint (manufactured by Shih paints Co., Ltd., Tianjin) and shown in Table 1.
TABLE 1
| Surface hardness | Peel strength | Fire resistance | Resistance to mildew | |
| Water paint-water epoxy paint | 100% | 100% | 100% | 100% |
| Example 1 | 108% | 133% | 190% | 185% |
| Example 2 | 135% | 138% | 196% | 188% |
| Example 3 | 128% | 125% | 185% | 170% |
| Example 4 | 136% | 132% | 175% | 175% |
From the above experiments, it can be known that the surface hardness, peel strength, fire resistance and mildew resistance of the conventional coating can be improved by using the coating.
The number of bubbles coated on the surface of stainless steel under the same coating conditions was measured, and the number of bubbles larger than 0.1mm in 1 square meter was calculated, and the results thereof were as follows, and the brightness thereof was measured under other conditions, to obtain table 2.
TABLE 2
| Number of bubbles | Brightness of light | Flatness of | |
| Water paint-water epoxy paint | 5 | 100% | 100% |
| Example 1 | 4 | 230% | 120% |
| Example 2 | 0 | 265% | 134% |
| Example 3 | 1 | 250% | 123% |
| Example 4 | 2 | 230% | 119% |
From the above experiments, it can be seen that the use of the coating can reduce bubbles and improve brightness.
From the above analysis, it can be seen that the experimental results of example 2 are better than those of the other examples, and are the best examples.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The preparation process of the water-based paint is characterized by comprising the following steps:
s1, preparing raw materials: selecting the following components by weight for later use: 50-60 parts of epoxy resin, 60-70 parts of nano modified inorganic fireproof resin, 40-50 parts of pearl powder, 20-30 parts of methyl ether, 10-20 parts of isooctanol, 15-30 parts of diethanolamine, 5-10 parts of polyamine resin, 10-20 parts of carboxylic acid, 5-10 parts of propylene glycol methyl ether, 10-15 parts of tributyl phosphate, 5-8 parts of propylene glycol antifreezing agent, 10-15 parts of preservative, 5-10 parts of mildew preventive, 5-10 parts of DA dispersant, 500 parts of water 300 and 20-30 parts of aromatic;
s2, pretreatment of materials: putting the epoxy resin, the nano modified inorganic fireproof resin and the pearl powder in the S1 into a grinding machine for grinding and mixing until the fineness is less than 20 meshes;
s3, primary dispersion of slurry: pouring water into the kettle body, sequentially adding methyl ether, isooctanol, diethanolamine, polyamine resin, carboxylic acid, propylene glycol methyl ether and tributyl phosphate into the kettle body, starting a dispersion motor on the kettle body for primary dispersion, controlling the rotating speed of the dispersion motor to be 2000-2200r/min, and controlling the dispersion time to be 20-30 min;
s4, secondary dispersion of slurry: heating the temperature in the kettle to 60-70 ℃, then starting a dispersion motor to perform secondary dispersion, controlling the rotation speed of the dispersion motor to be 800-;
s5, mixing and dispersing: the material obtained after the pretreatment of the S2 material is added into the solution obtained by the secondary dispersion of the S4 slurry, wherein the material obtained after the pretreatment of the S2 material is heated to 80-90 ℃ before being added;
s6, adding an auxiliary agent: sequentially adding a propylene glycol antifreezing agent, a preservative, a mildew preventive and a DA dispersing agent, starting a dispersing motor on the kettle body for dispersing, and controlling the dispersing speed to be 2300-2400r/min and the dispersing time to be 40-50 min;
s7, vacuum defoaming: and vacuumizing the interior of the kettle body by using a vacuum pump, and vacuumizing the pressure in the kettle body to 0.01 Mpa.
2. The process for preparing an aqueous coating according to claim 1, wherein: the preservative comprises the following components in percentage by mass: 1: 3: 1, acetylsalicylic acid, 8-hydroxyquinoline and 2-benzimidazolecarbamate.
3. The process for preparing an aqueous coating according to claim 1, wherein: the mildew preventive comprises the following components in percentage by mass of 2: 1: 1.5 dibutyl phthalate, white bamboo charcoal powder and polyethylene wax emulsion.
4. The process for preparing an aqueous coating according to claim 1, wherein: when the S3 slurry is initially dispersed, a film-forming aid is filled into the reaction kettle, and the film-forming aid is polyoxyethylene alkyl propenyl phenyl ether sulfonate.
5. The process for preparing an aqueous coating according to claim 1, wherein: and when the S4 slurry is dispersed for the second time, the aromatic agent is filled into the kettle body.
6. The process for preparing an aqueous coating according to claim 5, wherein: the preparation process of the aromatic comprises the following steps:
the method comprises the following steps: selecting the following components by weight for later use: 30-40 parts of lemon peel, 20-30 parts of orange peel, 50-60 parts of rose, 30-40 parts of pomegranate peel, 10-15 parts of agar, 5-10 parts of carrageenan, 8-12 parts of sodium stearate and 130 parts of distilled water;
step two: adding the lemon slices, the orange peels, the roses and the pomegranate peels in the step one into a high-pressure cooker, cooking for 30min, and filtering to obtain clear liquid for later use after cooking;
step three: transferring the clear liquid in the second step into a reaction kettle, adding agar, carrageenan and sodium stearate, heating the reaction kettle to 80-90 ℃, and preserving the temperature for 20-30 min; after cooling, a fragrance is obtained.
7. The process for preparing an aqueous coating according to claim 1, wherein: and a sodium sulfite dispersant is also added when the S6 auxiliary agent is added.
8. The process for preparing an aqueous coating according to claim 1, wherein: and a defoaming agent is added into the kettle body during vacuum defoaming of S7, wherein the defoaming agent comprises the following components in parts by weight: fatty alcohol: polydimethylsiloxane 1: 1.5.
9. the process for preparing an aqueous coating according to claim 1, wherein: s1, selecting the following components by weight for standby when preparing raw materials: 55-60 parts of epoxy resin, 64-68 parts of nano modified inorganic fireproof resin, 43-48 parts of pearl powder, 25-30 parts of methyl ether, 13-20 parts of isooctanol, 20-30 parts of diethanolamine, 5-10 parts of polyamine resin, 10-20 parts of carboxylic acid, 5-10 parts of propylene glycol methyl ether, 10-15 parts of tributyl phosphate, 5-8 parts of propylene glycol antifreezing agent, 10-15 parts of preservative, 5-10 parts of mildew preventive, 5-10 parts of DA dispersant, 450 parts of water 400-.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113372745A (en) * | 2021-06-22 | 2021-09-10 | 叶侨兴 | Original ecological environment-friendly building material preservative and preparation method thereof |
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