CN113527973A - Method for preparing exterior wall latex paint capable of releasing negative oxygen ion infrared rays - Google Patents
Method for preparing exterior wall latex paint capable of releasing negative oxygen ion infrared rays Download PDFInfo
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- CN113527973A CN113527973A CN202110935355.XA CN202110935355A CN113527973A CN 113527973 A CN113527973 A CN 113527973A CN 202110935355 A CN202110935355 A CN 202110935355A CN 113527973 A CN113527973 A CN 113527973A
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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
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/08—Homopolymers or copolymers of acrylic acid esters
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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
- 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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- 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
- C09D133/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/10—Homopolymers or copolymers of methacrylic acid 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
- 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
- C09D133/18—Homopolymers or copolymers of nitriles
- C09D133/20—Homopolymers or copolymers of acrylonitrile
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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
- C09D133/24—Homopolymers or copolymers of amides or imides
- C09D133/26—Homopolymers or copolymers of acrylamide or methacrylamide
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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
- C09D135/00—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 a carboxyl radical, and containing at least another carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Coating compositions based on derivatives of such polymers
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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
- 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
- C09D5/024—Emulsion paints including aerosols characterised by the additives
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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
- C09D5/024—Emulsion paints including aerosols characterised by the additives
- C09D5/025—Preservatives, e.g. antimicrobial agents
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
Abstract
The invention discloses a method for preparing exterior wall latex paint capable of releasing negative oxygen ion infrared rays, which comprises the following steps of S1: mixing deionized water with six aids, namely a dispersing agent, a wetting agent, a film-forming aid, a buffering agent, a defoaming agent and a whitening agent, injecting nitrogen to generate a large amount of bubbles in the mixture, and stirring at a low speed to obtain an aid mixture. The invention adopts the filling of the nano-grade tourmaline powder and the nano-grade titanium dioxide, wherein the nano-grade titanium dioxide has the double functions of a negative oxygen ion trigger and a whitening agent, and the tourmaline powder has piezoelectricity and pyroelectricity to degrade pollutants such as formaldehyde, benzene, ammonia, TVOC and the like, so that the indoor air is fresh and healthy.
Description
Technical Field
The invention relates to the technical field of exterior wall latex paint, in particular to a method for preparing exterior wall latex paint capable of releasing negative oxygen ion infrared rays.
Background
Latex paint is a common name of emulsion 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 acrylic ester copolymer emulsion. The external wall latex paint has the main functions of decorating and protecting the surface of a building, so that the appearance of the building is neat and attractive, the purpose of beautifying the urban environment is achieved, the external wall of the building can be protected, and the service life of the external wall latex paint is prolonged.
Some existing common latex paints with the same quality contain harmful chemical substances such as chloroform, dichloromethane and the like, when the latex paints are worn in houses, inhabitants can feel symptoms such as chest distress, limb weakness, nausea and the like, and the latex paints contain TVOC (total volatile organic compound), which is a volatile organic compound, and cause health hazards to human bodies under the overproof state, so that pregnant women or children are affected more greatly.
The most direct way to remove the harmful components is to air, ventilate and change the components of the emulsion paint, so the method for preparing the exterior wall emulsion paint capable of releasing negative oxygen ions and infrared rays is provided, and the emulsion paint can degrade pollutants such as formaldehyde, benzene, ammonia, TVOC and the like, so that the indoor air is fresh and healthy.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a method for preparing exterior wall latex paint capable of releasing negative oxygen ion infrared rays.
The invention provides a method for preparing exterior wall latex paint capable of releasing negative oxygen ion infrared rays, which is carried out according to the following steps:
s1: mixing deionized water with six aids, namely a dispersing agent, a wetting agent, a film-forming aid, a buffering agent, a defoaming agent and a whitening agent, injecting nitrogen to generate a large amount of bubbles in the mixture, and stirring at a low speed to obtain an aid mixture;
s2: adding nanoscale tourmaline powder, solid powder and hydroxyethyl cellulose, putting into the assistant mixture solution in S1, dispersing at high speed to obtain dispersed emulsion, pouring into a grinder, and grinding the dispersed emulsion to obtain white slurry;
s3: adding the white slurry into the emulsion prepared in advance in batches at a low speed, adding the white slurry of the next batch after the white slurry added in the previous batch is uniformly stirred at a low speed, and continuously and uniformly stirring at a low speed to obtain a primary coating;
s4: adjusting the viscosity of the primary coating by using silica fume and modified bentonite, blending the color and the depth of the primary coating by using color paste prepared by filling single-colored tourmaline powder, adding a defoaming agent and a bactericide, and filtering to obtain a finished emulsion paint.
As a further scheme of the present invention, the six kinds of auxiliaries in S1 are specifically as follows, the dispersant is polyvinyl alcohol, the wetting agent is alkylphenol polyoxyethylene, the film-forming auxiliary is at least one auxiliary selected from ethylene glycol, propylene glycol and hexanediol, the buffer is trimethylolmethane, the defoaming agent is any one selected from silicone emulsion, a higher alcohol fatty acid ester compound and polydimethylsiloxane, and the whitening agent is a mixture of nano-scale titanium dioxide and titanium dioxide.
As a further scheme of the invention, the solid powder comprises ground calcium carbonate, superfine kaolin and mica powder, and the weight ratio of the ground calcium carbonate to the superfine kaolin to the mica powder is 2.0-2.5: 1.2-1.5: 0.8-0.9.
As a further aspect of the present invention, the exterior wall latex paint capable of releasing negative oxygen ion infrared ray according to claim 1, wherein the preparation steps of the nano-grade tourmaline powder in S2 are as follows:
s2-1: weighing the tourmaline which is purified by flotation in advance according to the weight parts, washing the tourmaline for a plurality of times by using saline water and deionized water in sequence, and then placing the tourmaline in a vacuum drying furnace for drying for 0.8 to 1.2 hours at the temperature of between 70 and 75 ℃;
s2-2: drying, cooling to room temperature, pulverizing in an ultramicro powder pulverizer, wherein the ultramicro powder pulverizer is thrown onto a lining plate at a tangential speed of 120 m/s or more, the powder is rotated, lifted, collided with each other, rubbed, sheared, and processed into superfine powder with particle size of less than 10-15 nm.
As a further aspect of the present invention, the method for preparing the emulsion prepared in advance in S3 comprises the following steps:
s3-1: respectively putting the component A and the component B into an emulsifier for emulsification to obtain a pre-emulsified component A and a pre-emulsified component B;
s3-2: in the presence of water, an emulsifier, a pH regulator and an initiator, dropwise adding the pre-emulsified component A into a reactor at a speed of 50-100ml/h for polymerization reaction, dropwise adding the pre-emulsified component B into the reactor, and simultaneously adjusting the dropwise adding speed of the component A to ensure that A, B components are completely dripped simultaneously and continue to react after the dripping is completed, thus obtaining the emulsion for the exterior wall coating.
As a further scheme in the invention, the component A in the S3-1 comprises butyl acrylate or ethyl acrylate or methacrylate, acrylic acid, maleic anhydride and water; the component B comprises acrylonitrile or styrene or acrylamide or allylamine, acrylate-A, B, C, isooctyl or acrylonitrile, acrylic acid and water.
In a further embodiment of the present invention, the bactericide in S4 is sodium D-isoascorbate.
The beneficial effects of the invention are as follows: the exterior wall latex paint is filled with nanoscale tourmaline powder and nanoscale titanium dioxide, wherein the nanoscale titanium dioxide has double functions of a negative oxygen ion trigger and a whitening agent, the tourmaline powder has piezoelectricity and pyroelectricity, under the condition of temperature and pressure change, the potential difference of tourmaline crystals can be caused, ambient air is ionized, hit electrons are attached to adjacent water and oxygen molecules and are converted into air negative ions, the generated negative ions move in the air, negative charges are conveyed to bacteria, dust smoke particles, water drops and the like, the charges are combined with the particles, the purpose of purifying the air can be achieved, pollutants such as formaldehyde, benzene, ammonia, TVOC and the like can be degraded, and the indoor air can be fresh and healthy;
wherein the anion concentration of the prepared anion emulsion paint can be increased by 500-3When formaldehyde, ammonia and benzene are 5 times of GB50325-2001 standard, the removal rate of 96h is greater than 90%, the antibacterial and bacteriostatic rate is greater than 95%, the far infrared radiation rate is greater than 91% in the wavelength range of (4-14um), and the basic emulsion structure in the exterior wall latex paint is similar to a core-shell structure, and soft monomers and hard monomers are emulsifiedThe emulsion has the characteristics of good flexibility and high modulus, and is more favorable for improving the stability in the coating of the outer wall.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the descriptions of 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.
A method for preparing exterior wall latex paint capable of releasing negative oxygen ion infrared rays is carried out according to the following steps:
s1: mixing deionized water, polyvinyl alcohol, alkylphenol ethoxylates, propylene glycol, trimethylolmethane, emulsified silicone oil, nano-scale titanium dioxide and titanium dioxide mixture according to the proportion of 1:0.15:0.12:0.20:0.16:0.13:0.3, injecting nitrogen to generate a large amount of bubbles in the mixture, and stirring at a low speed to obtain an auxiliary agent mixture;
s2: adding nanoscale tourmaline powder, solid powder and hydroxyethyl cellulose into the assistant mixture solution in S1 according to the ratio of 2:5:1, dispersing at high speed to obtain dispersed emulsion, pouring into a grinder, and grinding the dispersed emulsion to obtain white slurry with the concentration of 35-42% by mass, preferably 40%.
S3: gradually adding 60-70% of white slurry into the prepared emulsion in a batch-wise slow manner according to the amount of 5%, wherein the ratio of the emulsion to the white slurry is 4:1, adding the white slurry of the next batch after the white slurry added in the previous batch is uniformly stirred at a low speed, and then continuously and uniformly stirring at a low speed to obtain a primary coating;
s4: adjusting the viscosity of the primary coating by using silica fume and modified bentonite, blending the color and the shade of the primary coating by using color paste prepared by filling single-colored tourmaline powder, adding polydimethylsiloxane and D-sodium erythorbate, and filtering to obtain a finished emulsion paint.
Wherein the solid powder comprises ground calcium carbonate, superfine kaolin and mica powder, and the weight ratio of the ground calcium carbonate to the superfine kaolin to the mica powder is 2.0-2.5: 1.2-1.5: 0.8-0.9.
Preferably, the ground calcium carbonate, the ultrafine kaolin and the mica powder are mixed according to a ratio of 2.0: ratio of 1.3: 0.8.
The preparation method of the nanoscale tourmaline powder comprises the following steps:
s2-1: weighing the tourmaline which is purified by flotation in advance according to the weight parts, washing the tourmaline for a plurality of times by using saline water and deionized water in sequence, and then placing the tourmaline in a vacuum drying furnace for drying for 0.8 to 1.2 hours at the temperature of between 70 and 75 ℃;
s2-2: drying, cooling to room temperature, pulverizing in an ultramicro powder pulverizer, wherein the ultramicro powder pulverizer is thrown onto a lining plate at a tangential speed of 120 m/s or more, the powder is rotated, lifted, collided with each other, rubbed, sheared, and processed into superfine powder with particle size of less than 10-15 nm.
The preparation method of the emulsion of the exterior wall latex paint comprises the following steps:
s3-1: respectively putting the component A and the component B into an emulsifier for emulsification to obtain a pre-emulsified component A and a pre-emulsified component B;
s3-2: in the presence of water, an emulsifier, a pH regulator and an initiator, dropwise adding the pre-emulsified component A into a reactor at a speed of 50-100ml/h for polymerization reaction, dropwise adding the pre-emulsified component B into the reactor, and simultaneously adjusting the dropwise adding speed of the component A to ensure that A, B components are completely dripped simultaneously and continue to react after the dripping is completed, thus obtaining the emulsion for the exterior wall coating.
In the preparation of the emulsion, the component A comprises butyl acrylate or ethyl acrylate or methacrylate, acrylic acid, maleic anhydride and water; the component B comprises acrylonitrile or styrene or acrylamide or allylamine, acrylate-A, B, C, isooctyl or acrylonitrile, acrylic acid and water.
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 (7)
1. The preparation method of the exterior wall latex paint capable of releasing negative oxygen ion infrared rays is characterized by comprising the following steps:
s1: mixing deionized water with six aids, namely a dispersing agent, a wetting agent, a film-forming aid, a buffering agent, a defoaming agent and a whitening agent, injecting nitrogen to generate a large amount of bubbles in the mixture, and stirring at a low speed to obtain an aid mixture;
s2: adding nanoscale tourmaline powder, solid powder and hydroxyethyl cellulose, putting into the assistant mixture solution in S1, dispersing at high speed to obtain dispersed emulsion, pouring into a grinder, and grinding the dispersed emulsion to obtain white slurry;
s3: adding the white slurry into the emulsion prepared in advance in batches at a low speed, adding the white slurry of the next batch after the white slurry added in the previous batch is uniformly stirred at a low speed, and continuously and uniformly stirring at a low speed to obtain a primary coating;
s4: adjusting the viscosity of the primary coating by using silica fume and modified bentonite, blending the color and the depth of the primary coating by using color paste prepared by filling single-colored tourmaline powder, adding a defoaming agent and a bactericide, and filtering to obtain a finished emulsion paint.
2. The exterior wall latex paint capable of releasing negative oxygen ions and infrared rays as claimed in claim 1, wherein the six kinds of auxiliary agents in S1 are specifically as follows, the dispersing agent is polyvinyl alcohol, the wetting agent is alkylphenol ethoxylate, the film forming auxiliary agent is at least one of ethylene glycol, propylene glycol and hexylene glycol, the buffering agent is trimethylolmethane, the defoaming agent is any one of silicone emulsion, higher alcohol fatty acid ester compound and polydimethylsiloxane, and the whitening agent is a mixture of nano-scale titanium dioxide and titanium dioxide.
3. The exterior wall latex paint capable of releasing negative oxygen ion infrared rays as claimed in claim 1, wherein the solid powder comprises heavy calcium carbonate, ultrafine kaolin and mica powder, and the weight ratio of the heavy calcium carbonate, the ultrafine kaolin and the mica powder is 2.0-2.5: 1.2-1.5: 0.8-0.9.
4. The exterior wall latex paint capable of releasing negative oxygen ion infrared rays as claimed in claim 1, wherein the preparation of the nanoscale tourmaline powder in S2 comprises the following steps:
s2-1: weighing the tourmaline which is purified by flotation in advance according to the weight parts, washing the tourmaline for a plurality of times by using saline water and deionized water in sequence, and then placing the tourmaline in a vacuum drying furnace for drying for 0.8 to 1.2 hours at the temperature of between 70 and 75 ℃;
s2-2: drying, cooling to room temperature, pulverizing in an ultramicro powder pulverizer, wherein the ultramicro powder pulverizer is thrown onto a lining plate at a tangential speed of 120 m/s or more, the powder is rotated, lifted, collided with each other, rubbed, sheared, and processed into superfine powder with particle size of less than 10-15 nm.
5. The exterior wall latex paint capable of releasing negative oxygen ion infrared rays as claimed in claim 1, wherein the preparation method of the pre-prepared emulsion in S3 comprises the following steps:
s3-1: respectively putting the component A and the component B into an emulsifier for emulsification to obtain a pre-emulsified component A and a pre-emulsified component B;
s3-2: in the presence of water, an emulsifier, a pH regulator and an initiator, dropwise adding the pre-emulsified component A into a reactor at a speed of 50-100ml/h for polymerization reaction, dropwise adding the pre-emulsified component B into the reactor, and simultaneously adjusting the dropwise adding speed of the component A to ensure that A, B components are completely dripped simultaneously and continue to react after the dripping is completed, thus obtaining the emulsion for the exterior wall coating.
6. The exterior wall latex paint capable of releasing negative oxygen ion infrared rays as claimed in claim 5, wherein the A component in S3-1 comprises butyl acrylate or ethyl acrylate or methacrylate, acrylic acid, maleic anhydride and water; the component B comprises acrylonitrile or styrene or acrylamide or allylamine, acrylate-A, B, C, isooctyl or acrylonitrile, acrylic acid and water.
7. The exterior wall latex paint capable of releasing negative oxygen ion infrared rays as claimed in claim 1, wherein said bactericide in S4 is sodium D-isoascorbate.
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- 2021-08-16 CN CN202110935355.XA patent/CN113527973A/en active Pending
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Application publication date: 20211022 |