CN113308157B - Radiation refrigeration self-cleaning coating - Google Patents

Radiation refrigeration self-cleaning coating Download PDF

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Publication number
CN113308157B
CN113308157B CN202110410189.1A CN202110410189A CN113308157B CN 113308157 B CN113308157 B CN 113308157B CN 202110410189 A CN202110410189 A CN 202110410189A CN 113308157 B CN113308157 B CN 113308157B
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coating
radiation refrigeration
titanium dioxide
nano
parts
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CN113308157A (en
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杨荣贵
万容兵
万亚飞
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Ningbo Ruiling New Energy Materials Research Institute Co ltd
Ningbo Ruiling New Energy Technology Co ltd
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Ningbo Ruiling New Energy Materials Research Institute Co ltd
Ningbo Ruiling New Energy Technology Co ltd
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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
    • 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
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • 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
    • C09D143/00—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 containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
    • C09D143/04—Homopolymers or copolymers of monomers containing silicon
    • 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
    • C09D5/004—Reflecting paints; Signal paints
    • 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
    • C09D5/24—Electrically-conducting paints
    • 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
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
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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
    • C09D7/61—Additives non-macromolecular inorganic
    • C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
    • 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
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • 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
    • C08K2003/2231—Oxides; Hydroxides of metals of tin
    • 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
    • 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
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/001—Conductive additives
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives

Abstract

The invention discloses a radiation refrigeration self-cleaning coating, which comprises a bottom coating and an upper coating, wherein the bottom coating comprises the following components in parts by weight: 180-280 parts of water; 2-5 parts of a thickening agent; 8-16 parts of a wetting dispersant; 1-3 parts of an alkaline pH regulator; 200-500 parts of radiation refrigeration pigment and filler; 30-100 parts of conductive powder; 250-450 parts of emulsion; 10-20 parts of a film-forming assistant; the upper layer coating comprises: 250-450 parts of water; 2-5 parts of a thickening agent; 8-16 parts of a wetting dispersant; 100-300 parts of a photocatalytic filler; 20-100 parts of conductive powder; 100-300 parts of a hydrophilic material; 100-200 parts of a film-forming assistant.

Description

Radiation refrigeration self-cleaning coating
Technical Field
The invention relates to the field of building coatings, in particular to a radiation refrigeration self-cleaning coating.
Background
The main function of the exterior wall coating is to decorate and protect the wall surface of a building, so that the appearance of the building is neat and beautiful, thereby achieving the purpose of beautifying the urban environment, simultaneously playing the role of protecting the exterior wall of the building and prolonging the service life of the exterior wall coating. However, the exterior wall coating is exposed to the atmospheric environment for a long time and is influenced by dust, rain, snow, sunlight and the like in the atmosphere, so that the exterior wall coating has higher performance requirements such as self-cleaning performance, refrigeration performance and the like in the using process.
Some coatings with self-cleaning function have been developed in the market, however, the self-cleaning method cannot meet the long-term effect, and meanwhile, in the aspect of radiation refrigeration coatings, the coatings which achieve the radiation refrigeration effect in the market are poor in contamination resistance, and after long-time wind blowing and rain showering, the dust on the surfaces of the coatings is seriously polluted, so that the radiation refrigeration effect is reduced.
Disclosure of Invention
Based on this, it is necessary to provide a coating material with both radiation cooling and self-cleaning effects.
A radiation refrigeration self-cleaning paint comprises a bottom paint and an upper paint, which are calculated by weight parts,
the primer includes:
180-280 parts of water;
2-5 parts of a thickening agent;
8-16 parts of a wetting dispersant;
1-3 parts of an alkaline pH regulator;
200-500 parts of radiation refrigeration pigment and filler;
30-100 parts of conductive powder;
250-450 parts of emulsion;
10-20 parts of a film-forming assistant;
the upper layer coating comprises:
250-450 parts of water;
2-5 parts of a thickening agent;
8-16 parts of a wetting dispersant;
100-300 parts of photocatalytic filler;
20-100 parts of conductive powder;
100-300 parts of hydrophilic material;
100-200 parts of a film-forming assistant.
In some embodiments, the radiation refrigeration pigment filler is selected from one or more of infrared reflection type titanium dioxide, nano aluminum oxide, nano zinc oxide and ceramic powder.
In some embodiments, the radiation refrigeration pigment and filler accounts for 20 to 50 mass percent of the primer.
In some of these embodiments, the photocatalytic filler is selected from nano-alumina coated nano-zinc oxide.
In some of the embodiments, the conductive powder is selected from one or more of conductive titanium dioxide, conductive mica powder and tin oxide powder.
In some of these embodiments, the hydrophilic material is selected from one or both of nano-titania and nano-silica.
In some of the embodiments, the emulsion is selected from one or more of acrylic emulsion, silicone-acrylic emulsion, hydroxyl acrylic emulsion with hydroxyl value less than or equal to 100; preferably, in the primer coating, the emulsion accounts for 25-45% of the mass of the primer coating.
In some embodiments, the primer includes 0.01-6 wt% of a curing agent.
In some of these embodiments, the curing agent is selected from aqueous isocyanates.
In some embodiments, the photocatalytic filler accounts for 10% to 30% of the mass of the upper layer coating.
In some embodiments, the hydrophilic material is 20 to 40% of the upper layer coating by mass.
In some embodiments, in the upper layer coating, the conductive powder in the bottom layer coating accounts for 3 to 10 mass percent of the bottom layer coating, and the conductive powder in the upper layer coating accounts for 2 to 10 mass percent of the upper layer coating.
The radiation refrigeration self-cleaning coating is divided into two parts, namely an upper coating and a bottom coating, wherein the bottom coating is coated close to the surface of an outer wall, the upper coating is coated on the bottom coating, the radiation refrigeration self-cleaning coating is used for coating on the outer wall to form a double coating, the upper coating and the bottom coating are optimized in formula and matched with each other, the radiation refrigeration effect can be realized, and the double coating has a good self-cleaning effect, so that the double coating can show a long-term stable refrigeration effect.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the following description. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The embodiment of the invention provides a radiation refrigeration self-cleaning coating, which comprises a bottom coating and an upper coating, wherein the bottom coating and the upper coating are prepared from the following components in parts by weight,
the primer includes:
180-280 parts of water;
2-5 parts of a thickening agent;
8-16 parts of a wetting dispersant;
1-3 parts of an alkaline pH regulator;
200-500 parts of radiation refrigeration pigment and filler;
30-100 parts of conductive powder;
250-450 parts of emulsion;
10-20 parts of a film-forming assistant;
the upper layer coating comprises:
250-450 parts of water;
2-5 parts of a thickening agent;
8-16 parts of a wetting dispersant;
100-300 parts of photocatalytic filler;
20-100 parts of conductive powder;
100-300 parts of hydrophilic material;
100-200 parts of a film-forming assistant.
The radiation refrigeration self-cleaning coating is divided into two parts, namely an upper coating and a bottom coating, wherein the bottom coating is coated close to the surface of an outer wall, the upper coating is coated on the bottom coating, the radiation refrigeration self-cleaning coating is used for coating on the outer wall to form a double coating, the upper coating and the bottom coating are optimized in formula and matched with each other, the radiation refrigeration effect can be realized, and the double coating has a good self-cleaning effect, so that the double coating can show a long-term stable refrigeration effect.
In some embodiments, the radiation refrigeration pigment filler is selected from one or more of infrared reflection type titanium dioxide, nano aluminum oxide, nano zinc oxide and ceramic powder. In some embodiments, the photocatalytic filler is selected from nano-alumina coated nano-zinc oxide.
In some embodiments, the conductive powder is selected from one or more of conductive titanium dioxide, conductive mica powder, and tin oxide powder.
The conductive titanium dioxide (conductive titanium dioxide) is prepared by taking titanium dioxide as a matrix, adopting a nanotechnology, and forming a conductive oxide layer on the surface of the matrix through surface treatment and semiconductor doping treatment, so that the novel electronic conductive functional semiconductor pigment is prepared, and has the shape of a needle, the long diameter of 5.15 microns and the short diameter of 0.27 microns. The high-reflectivity titanium dioxide mainly reflects visible light and infrared light of 400 nm-2500 nm, and the particle size is micron-sized. The nano titanium dioxide mainly has two crystal forms of anatase type and rutile type, and the rutile type titanium dioxide is more stable and compact than the anatase type titanium dioxide, and has higher hardness, density, dielectric constant and refractive index, and higher covering power and tinting strength. Anatase titanium dioxide has a higher reflectance in the visible short wavelength region than rutile titanium dioxide, a bluish hue, a lower ultraviolet absorption capacity than rutile titanium dioxide, and a higher photocatalytic activity than rutile titanium dioxide. Under certain conditions, anatase type titanium dioxide can be converted into rutile type titanium dioxide, and the particle size is below 100 nm.
In some embodiments, the hydrophilic material is selected from one or both of nano-titania and nano-silica. Preferably a combination of nano-titania and nano-silica.
In some embodiments, the emulsion is selected from one or more of acrylic emulsion, silicone-acrylic emulsion, and hydroxy acrylic emulsion with hydroxyl value less than or equal to 100. In some embodiments, the emulsion may comprise 25% to 45% by weight of the primer. The silicone-acrylate emulsion is prepared by adding an organic silicon monomer containing unsaturated bonds and an acrylic monomer into a proper auxiliary agent and polymerizing by a core-shell coating polymerization process. Combines the high temperature resistance, weather resistance, chemical resistance, hydrophobicity, low surface energy and difficult pollution of organosilicon and the high color retention, flexibility and adhesiveness of acrylic resin, and is environment-friendly emulsion and coating for buildings with high weather resistance, high water resistance and pollution resistance.
In some embodiments, the mass fraction of the radiation refrigerating pigment and filler in the primer is 20% to 50%.
In some embodiments, the primer further comprises a curing agent with a mass fraction of 0.01% to 6%.
In some embodiments, the curing agent may be selected from aqueous isocyanates.
The pH regulator in the primer belongs to an alkaline regulator, replaces ammonia water used in the prior art, is adjusted to be 8-9 in pH, has a co-dispersion effect with a wetting dispersant, reduces pigment flocculation, adjusts the compatibility of emulsion and pigment, has low pigment content in the upper coating, does not contain emulsion, and can be used or not used.
In some embodiments, in the upper layer coating, the mass fraction of the photocatalytic filler in the upper layer coating is 10% to 30%, and the photocatalytic filler can decompose 90% or more of organic pollutants without destroying the refrigeration effect of the double-layer coating.
In some embodiments, the hydrophilic material is 20% to 40% by weight of the topcoat.
In some embodiments, the conductive powder accounts for 3 to 10 mass percent of the bottom layer coating, and the conductive powder accounts for 2 to 10 mass percent of the upper layer coating in the upper layer coating, so that the surface resistance of the double coating reaches 10 percent7～109Omega, in this range, the double coating can be made to achieve a self-cleaning effect and maintain a good cooling effect.
In some embodiments, the coalescent may be selected from one or more of the alcohol ester twelve, propylene glycol butyl ether, propylene glycol diacetate, dipropylene glycol dimethyl ether.
In some embodiments, the thickener may be selected from one or more of associative polyurethane thickeners, associative alkali swelling thickeners, hydroxyethyl cellulose ethers, water-borne bentonites.
The following are specific examples.
The proportions listed in the following examples and comparative examples are mass ratios.
Example 1
The embodiment provides a high-performance radiation refrigeration self-cleaning coating, which comprises a bottom coating and an upper coating, and raw materials are prepared according to the following mixture ratio:
(1) bottom layer coating: 180Kg of water, 2Kg of thickening agent, 6Kg of defoaming agent, 16Kg of wetting dispersant, 1Kg of pH regulator, 500Kg of radiation refrigeration filler, 30Kg of conductive powder, 250Kg of emulsion and 15Kg of film-forming assistant.
Wherein the thickener is an associative polyurethane thickener: associative alkali swelling thickener: the hydroxyethyl cellulose ether is 2:1: 2.
Wherein the radiation refrigeration filler is titanium dioxide with high infrared reflectivity: the ratio of the nano aluminum oxide is 1: 1.
Wherein the conductive powder is conductive titanium dioxide.
Wherein the emulsion is silicone-acrylate emulsion.
Wherein the film-forming additive alcohol ester is twelve: propylene glycol butyl ether: the ratio of the dipropylene glycol dimethyl ether to the dipropylene glycol dimethyl ether is 8:4: 3.
(2) Coating of the upper layer: 250Kg of water, 2Kg of thickening agent, 5Kg of defoaming agent, 16Kg of wetting dispersant, 300Kg of photocatalytic filler, 20Kg of conductive powder, 200Kg of super-hydrophilic material and 72Kg of film-forming assistant.
Wherein the photocatalytic filler is nano titanium dioxide.
Wherein the conductive powder conductive titanium dioxide: the tin oxide powder was 2: 1.
Wherein the super-hydrophilic material nano titanium dioxide: the ratio of the nano silicon dioxide is 1: 1.
Example 2
The embodiment provides a high-performance radiation refrigeration self-cleaning coating, which comprises a bottom coating and an upper coating, and raw materials are prepared according to the following mixture ratio:
(1) bottom layer coating: 220Kg of water, 3Kg of thickening agent, 4Kg of defoaming agent, 12Kg of wetting dispersant, 2Kg of pH regulator, 280Kg of radiation refrigeration filler, 49Kg of conductive powder, 320Kg of emulsion, 10Kg of film-forming assistant and 100Kg of curing agent.
Wherein the thickener is preferably an associative polyurethane thickener: the water-based bentonite is 3: 2.
Wherein the radiation refrigeration filler nano-alumina: nano zinc oxide: the ratio of the ceramic powder is 4:4: 1.
Wherein the conductive powder conductive titanium dioxide: the tin oxide powder was 6: 1.
The emulsion is preferably a hydroxy acrylic emulsion (hydroxyl value is less than or equal to 100): the curing agent was 3.2: 1.
Twelve film-forming aid alcohol esters: propylene glycol diacetate: the ratio of the dipropylene glycol dimethyl ether to the dipropylene glycol dimethyl ether is 4:2: 1.
(2) Coating of the upper layer: 320Kg of water, 3Kg of thickening agent, 4Kg of defoaming agent, 13Kg of wetting dispersant, 200Kg of photocatalytic filler, 60Kg of conductive powder, 300Kg of super-hydrophilic material and 100Kg of film-forming assistant.
Wherein the photocatalytic filler is nano-alumina coated nano-zinc oxide.
Wherein the conductive powder is conductive mica powder: the tin oxide powder was 1: 1.
Wherein the super-hydrophilic material nano titanium dioxide: the ratio of the nano silicon dioxide is 1: 2.
Example 3
The embodiment provides a high-performance radiation refrigeration self-cleaning coating, which comprises a bottom coating and an upper coating, and raw materials are prepared according to the following mixture ratio:
(1) bottom layer coating: 280Kg of water, 5Kg of thickening agent, 3Kg of defoaming agent, 8Kg of wetting dispersant, 3Kg of pH regulator, 200Kg of radiation refrigeration filler, 90Kg of conductive powder, 400Kg of emulsion and 11Kg of film-forming assistant.
Wherein the thickener is preferably an associative polyurethane thickener: water-based bentonite: the ratio of the associative alkali swelling thickener to the associative alkali swelling thickener is 3:2: 1.
Wherein the radiation refrigeration filler high infrared reflection titanium pigment: the ratio of the ceramic powder is 8: 1.
Wherein the conductive powder conductive titanium dioxide: conductive mica powder: the tin oxide powder was 1:2: 1.
The emulsion is acrylic emulsion.
Twelve film-forming aid alcohol esters: propylene glycol butyl ether was 4: 1.
(2) Coating of the upper layer: 450Kg of water, 5Kg of thickening agent, 1Kg of antifoaming agent, 8Kg of wetting dispersant, 150Kg of photocatalytic filler, 50Kg of conductive powder, 136Kg of super-hydrophilic material, and 200Kg of film-forming assistant.
Wherein the photocatalytic filler is nano titanium dioxide: the ratio of the nano aluminum oxide to the nano zinc oxide is 1: 1.
Wherein the conductive powder conductive titanium dioxide: conductive mica powder: the ratio of tin oxide powder is 2:1: 1.
Wherein the super-hydrophilic material nano titanium dioxide: the ratio of the nano silicon dioxide is 3: 1.
Comparative example 1
Only primer coating: 192Kg of water, 4Kg of thickening agent, 2Kg of defoaming agent, 10Kg of wetting dispersant, 2Kg of pH regulator, 220Kg of radiation refrigeration filler, 100Kg of conductive powder, 450Kg of emulsion and 20Kg of film-forming assistant.
Wherein the thickener is preferably an associative polyurethane thickener: the association type alkali swelling thickener is 3: 2.
Wherein the radiation refrigeration filler is high infrared reflection titanium dioxide: the ratio of the ceramic powder is 1: 2.
Wherein the conductive powder conductive titanium dioxide: conductive mica powder: the ratio of tin oxide powder is 1:1: 2.
The emulsion is acrylic emulsion.
Twelve film-forming aid alcohol esters: propylene glycol butyl ether was 2: 1.
Comparative example 2
Only the upper layer coating: 323Kg of water, 3Kg of thickening agent, 2Kg of defoaming agent, 12Kg of wetting dispersant, 220Kg of photocatalytic filler, 10Kg of conductive powder, 300Kg of super-hydrophilic material and 130Kg of film-forming assistant.
Wherein the photocatalytic filler is nano titanium dioxide: the ratio of the nano aluminum oxide to the nano zinc oxide is 1: 1.
Wherein the conductive powder conductive titanium dioxide: conductive mica powder: the ratio of tin oxide powder to tin oxide powder was 2:1: 1.
Wherein the super-hydrophilic material nano titanium dioxide: the ratio of the nano silicon dioxide is 3: 1.
Comparative example 3
The embodiment provides a high-performance radiation refrigeration self-cleaning coating, which comprises a bottom coating and an upper coating, and raw materials are prepared according to the following mixture ratio:
(1) bottom layer coating: 250Kg of water, 2Kg of thickening agent, 5Kg of defoaming agent, 16Kg of wetting dispersant, 300Kg of photocatalytic filler, 20Kg of conductive powder, 200Kg of super-hydrophilic material and 72Kg of film-forming assistant.
Wherein the photocatalytic filler is nano titanium dioxide.
Wherein the conductive powder conductive titanium dioxide: the tin oxide powder was 2: 1.
Wherein the super-hydrophilic material nano titanium dioxide: the ratio of the nano silicon dioxide is 1: 1.
(2) Coating of the upper layer: 180Kg of water, 2Kg of thickening agent, 6Kg of defoaming agent, 16Kg of wetting dispersant, 1Kg of pH regulator, 500Kg of radiation refrigeration filler, 30Kg of conductive powder, 250Kg of emulsion and 15Kg of film-forming assistant.
Wherein the thickening agent association type polyurethane thickening agent comprises the following components in percentage by weight: associative alkali swelling thickener: the hydroxyethyl cellulose ether is 2:1: 2.
Wherein the radiation refrigeration filler is titanium dioxide with high infrared reflectivity: the ratio of the nano aluminum oxide is 1: 1.
Wherein the conductive powder is conductive titanium dioxide.
Wherein the emulsion is silicone-acrylate emulsion.
Wherein the film-forming additive alcohol ester is twelve: propylene glycol butyl ether: the ratio of the dipropylene glycol dimethyl ether to the dipropylene glycol dimethyl ether is 8:4: 3.
Comparative example 4
Only one layer of coating, coating components: 430Kg of water, 4Kg of thickening agent, 11Kg of antifoaming agent, 32Kg of wetting dispersant, 300Kg of photocatalytic filler, 50Kg of conductive powder, 200Kg of super-hydrophilic material, 87Kg of film-forming assistant, 1Kg of pH regulator, 500Kg of radiation refrigeration filler and 250Kg of emulsion.
Wherein the thickener is an associative polyurethane thickener: associative alkali swelling thickener: the hydroxyethyl cellulose ether is 2:1: 2.
Wherein the photocatalytic filler is nano titanium dioxide.
Wherein the conductive powder conductive titanium dioxide: the tin oxide powder was 2: 1.
Wherein the super-hydrophilic material nano titanium dioxide: the ratio of the nano silicon dioxide is 1: 1.
Wherein the radiation refrigeration filler is titanium dioxide with high infrared reflectivity: the ratio of the nano aluminum oxide is 1: 1.
Wherein the emulsion is silicone-acrylate emulsion.
Wherein the film-forming additive alcohol ester is twelve: propylene glycol butyl ether: the ratio of the dipropylene glycol dimethyl ether to the dipropylene glycol dimethyl ether is 8:4: 3.
Comparative example 5
The embodiment provides a high-performance radiation refrigeration self-cleaning coating, which comprises a bottom coating and an upper coating, and raw materials are prepared according to the following mixture ratio:
(1) bottom layer coating: 180Kg of water, 2Kg of thickening agent, 6Kg of defoaming agent, 16Kg of wetting dispersant, 1Kg of pH regulator, 500Kg of radiation refrigeration filler, 30Kg of conductive powder, 250Kg of emulsion and 15Kg of film-forming assistant.
Wherein the thickening agent association type polyurethane thickening agent comprises the following components in percentage by weight: associative alkali swelling thickener: the hydroxyethyl cellulose ether is 2:1: 2.
Wherein the radiation refrigeration filler is titanium dioxide with high infrared reflectivity: the ratio of the nano aluminum oxide is 1: 1.
Wherein the conductive powder is conductive titanium dioxide.
Wherein the emulsion is silicone-acrylate emulsion.
Wherein the film-forming additive alcohol ester is twelve: propylene glycol butyl ether: the ratio of the dipropylene glycol dimethyl ether is 8:4: 3.
(2) Coating of the upper layer: 250Kg of water, 2Kg of thickening agent, 5Kg of defoaming agent, 16Kg of wetting dispersant, 20Kg of conductive powder, 200Kg of super-hydrophilic material and 72Kg of film-forming assistant.
Wherein the conductive powder conductive titanium dioxide: the tin oxide powder was 2: 1.
Wherein the super-hydrophilic material nano titanium dioxide: the ratio of the nano silicon dioxide is 1: 1.
Comparative example 6
The embodiment provides a high-performance radiation refrigeration self-cleaning coating, which comprises a bottom coating and an upper coating, and raw materials are prepared according to the following mixture ratio:
(1) bottom layer coating: 180Kg of water, 2Kg of thickening agent, 6Kg of defoaming agent, 16Kg of wetting dispersant, 1Kg of pH regulator, 500Kg of radiation refrigeration filler, 30Kg of conductive powder, 250Kg of emulsion, and 15Kg of film forming aid.
Wherein the thickening agent association type polyurethane thickening agent comprises the following components in percentage by weight: associative alkali swelling thickener: the hydroxyethyl cellulose ether is 2:1: 2.
Wherein the radiation refrigeration filler is titanium dioxide with high infrared reflectivity: the ratio of the nano aluminum oxide is 1: 1.
Wherein the conductive powder is conductive titanium dioxide.
Wherein the emulsion is silicone-acrylate emulsion.
Wherein the film-forming additive alcohol ester is twelve: propylene glycol butyl ether: the ratio of the dipropylene glycol dimethyl ether to the dipropylene glycol dimethyl ether is 8:4: 3.
(2) Coating of the upper layer: 250Kg of water, 2Kg of thickening agent, 5Kg of antifoaming agent, 16Kg of wetting dispersant, 300Kg of photocatalytic filler, 200Kg of super-hydrophilic material and 72Kg of film-forming assistant.
Wherein the photocatalytic filler is nano titanium dioxide.
Wherein the super-hydrophilic material nano titanium dioxide: the ratio of the nano silicon dioxide is 1: 1.
Comparative example 7
The embodiment provides a high-performance radiation refrigeration self-cleaning coating, which comprises a bottom coating and an upper coating, and the raw materials are prepared according to the following mixture ratio:
(1) bottom layer coating: 180Kg of water, 2Kg of thickening agent, 6Kg of defoaming agent, 16Kg of wetting dispersant, 1Kg of pH regulator, 500Kg of radiation refrigeration filler, 30Kg of conductive powder, 250Kg of emulsion and 15Kg of film-forming assistant.
Wherein the thickening agent association type polyurethane thickening agent comprises the following components in percentage by weight: associative alkali swelling thickener: the hydroxyethyl cellulose ether is 2:1: 2.
Wherein the radiation refrigeration filler is titanium dioxide with high infrared reflectivity: the ratio of the nano aluminum oxide is 1: 1.
Wherein the conductive powder is conductive titanium dioxide.
Wherein the emulsion is silicone-acrylate emulsion.
Wherein the film-forming additive alcohol ester is twelve: propylene glycol butyl ether: the ratio of the dipropylene glycol dimethyl ether to the dipropylene glycol dimethyl ether is 8:4: 3.
(2) Coating of the upper layer: 250Kg of water, 2Kg of thickening agent, 5Kg of defoaming agent, 16Kg of wetting dispersant, 300Kg of photocatalytic filler, 20Kg of conductive powder and 72Kg of film-forming assistant.
Wherein the photocatalytic filler is nano titanium dioxide.
Wherein the conductive powder conductive titanium dioxide: the tin oxide powder was 2: 1.
Comparative example 8
The embodiment provides a high-performance radiation refrigeration self-cleaning coating, which comprises a bottom coating and an upper coating, and raw materials are prepared according to the following mixture ratio:
(1) bottom layer coating: 180Kg of water, 2Kg of thickening agent, 6Kg of defoaming agent, 16Kg of wetting dispersant, 1Kg of pH regulator, 30Kg of conductive powder, 250Kg of emulsion and 15Kg of film-forming assistant.
Wherein the thickening agent association type polyurethane thickening agent comprises the following components in percentage by weight: associative alkali swelling thickener: the hydroxyethyl cellulose ether is 2:1: 2.
Wherein the conductive powder is conductive titanium dioxide.
Wherein the emulsion is silicone-acrylate emulsion.
Wherein the film-forming additive alcohol ester is twelve: propylene glycol butyl ether: the ratio of the dipropylene glycol dimethyl ether to the dipropylene glycol dimethyl ether is 8:4: 3.
(2) Coating of the upper layer: 250Kg of water, 2Kg of thickening agent, 5Kg of defoaming agent, 16Kg of wetting dispersant, 300Kg of photocatalytic filler, 20Kg of conductive powder, 200Kg of super-hydrophilic material and 72Kg of film-forming assistant.
Wherein the photocatalytic filler is nano titanium dioxide.
Wherein the conductive powder conductive titanium dioxide: the tin oxide powder was 2: 1.
Wherein the super-hydrophilic material nano titanium dioxide: the ratio of the nano silicon dioxide is 1: 1.
Comparative example 9
The embodiment provides a high-performance radiation refrigeration self-cleaning coating, which comprises a bottom coating and an upper coating, and raw materials are prepared according to the following mixture ratio:
(1) bottom layer coating: 180Kg of water, 2Kg of thickening agent, 6Kg of defoaming agent, 16Kg of wetting dispersant, 1Kg of pH regulator, 500Kg of radiation refrigeration filler, 250Kg of emulsion and 15Kg of film-forming assistant.
Wherein the thickening agent association type polyurethane thickening agent comprises the following components in percentage by weight: associative alkali swelling thickener: the hydroxyethyl cellulose ether is 2:1: 2.
Wherein the radiation refrigeration filler is titanium dioxide with high infrared reflectivity: the ratio of the nano aluminum oxide is 1: 1.
Wherein the emulsion is silicone-acrylate emulsion.
Wherein the film-forming additive alcohol ester is twelve: propylene glycol butyl ether: the ratio of the dipropylene glycol dimethyl ether to the dipropylene glycol dimethyl ether is 8:4: 3.
(2) Coating of the upper layer: 250Kg of water, 2Kg of thickening agent, 5Kg of defoaming agent, 16Kg of wetting dispersant, 300Kg of photocatalytic filler, 20Kg of conductive powder, 200Kg of super-hydrophilic material and 72Kg of film-forming assistant.
Wherein the photocatalytic filler is nano titanium dioxide.
Wherein the conductive powder conductive titanium dioxide: the tin oxide powder was 2: 1.
Wherein the super-hydrophilic material nano titanium dioxide: the ratio of the nano silicon dioxide is 1: 1.
Comparative example 10
The embodiment provides a high-performance radiation refrigeration self-cleaning coating, which comprises a bottom coating and an upper coating, and raw materials are prepared according to the following mixture ratio:
(1) bottom layer coating: 180Kg of water, 2Kg of thickening agent, 6Kg of defoaming agent, 16Kg of wetting dispersant, 1Kg of pH regulator, 500Kg of radiation refrigeration filler, 30Kg of conductive powder and 15Kg of film-forming assistant.
Wherein the thickening agent association type polyurethane thickening agent comprises the following components in percentage by weight: associative alkali swelling thickener: the hydroxyethyl cellulose ether is 2:1: 2.
Wherein the radiation refrigeration filler is titanium dioxide with high infrared reflectivity: the ratio of the nano aluminum oxide is 1: 1.
Wherein the conductive powder is conductive titanium dioxide.
Wherein the film-forming additive alcohol ester is twelve: propylene glycol butyl ether: the ratio of the dipropylene glycol dimethyl ether to the dipropylene glycol dimethyl ether is 8:4: 3.
(2) Coating of the upper layer: 250Kg of water, 2Kg of thickening agent, 5Kg of defoaming agent, 16Kg of wetting dispersant, 300Kg of photocatalytic filler, 20Kg of conductive powder, 200Kg of super-hydrophilic material and 72Kg of film-forming assistant.
Wherein the photocatalytic filler is nano titanium dioxide.
Wherein the conductive powder conductive titanium dioxide: the tin oxide powder was 2: 1.
Wherein the super-hydrophilic material nano titanium dioxide: the ratio of the nano silicon dioxide is 1: 1.
Comparative example 11
(1) Bottom layer coating: 180Kg of water, 2Kg of thickening agent, 6Kg of defoaming agent, 16Kg of wetting dispersant, 500Kg of radiation refrigeration filler, 30Kg of conductive powder, 250Kg of emulsion and 15Kg of film-forming assistant.
Wherein the thickener is an associative polyurethane thickener: associative alkali swelling thickener: the hydroxyethyl cellulose ether is 2:1: 2.
Wherein the radiation refrigeration filler is titanium dioxide with high infrared reflectivity: the ratio of the nano aluminum oxide is 1: 1.
Wherein the conductive powder is conductive titanium dioxide.
Wherein the emulsion is silicone-acrylate emulsion.
Wherein the film-forming additive is alcohol ester twelve: propylene glycol butyl ether: the ratio of the dipropylene glycol dimethyl ether is 8:4: 3.
(2) Coating of the upper layer: 250Kg of water, 2Kg of thickening agent, 5Kg of defoaming agent, 16Kg of wetting dispersant, 300Kg of photocatalytic filler, 20Kg of conductive powder, 200Kg of super-hydrophilic material and 72Kg of film-forming assistant.
Wherein the photocatalytic filler is nano titanium dioxide.
Wherein the conductive powder conductive titanium dioxide: the tin oxide powder was 2: 1.
Wherein the super-hydrophilic material nano titanium dioxide: the ratio of the nano silicon dioxide is 1: 1.
Comparative example 12
(1) Bottom layer coating: 180Kg of water, 2Kg of thickening agent, 6Kg of defoaming agent, 16Kg of wetting dispersant, 1Kg of pH regulator, 500Kg of radiation refrigeration filler, 150Kg of conductive powder, 250Kg of emulsion and 15Kg of film-forming assistant.
Wherein the thickening agent association type polyurethane thickening agent comprises the following components in percentage by weight: associative alkali swelling thickener: the hydroxyethyl cellulose ether is 2:1: 2.
Wherein the radiation refrigeration filler is titanium dioxide with high infrared reflectivity: the ratio of the nano aluminum oxide is 1: 1.
Wherein the conductive powder is conductive titanium dioxide.
Wherein the emulsion is silicone-acrylate emulsion.
Wherein the film-forming additive alcohol ester is twelve: propylene glycol butyl ether: the ratio of the dipropylene glycol dimethyl ether to the dipropylene glycol dimethyl ether is 8:4: 3.
(2) Coating of the upper layer: 250Kg of water, 2Kg of thickening agent, 5Kg of defoaming agent, 16Kg of wetting dispersant, 300Kg of photocatalytic filler, 100Kg of conductive powder, 200Kg of super-hydrophilic material and 72Kg of film-forming assistant.
Wherein the photocatalytic filler is nano titanium dioxide.
Wherein the conductive powder conductive titanium dioxide: the tin oxide powder was 2: 1.
Wherein the super-hydrophilic material nano titanium dioxide: the ratio of the nano silicon dioxide is 1: 1.
Comparative example 13
The embodiment provides a high-performance radiation refrigeration self-cleaning coating, which comprises a bottom coating and an upper coating, and raw materials are prepared according to the following mixture ratio:
(1) bottom layer coating: 180Kg of water, 2Kg of thickening agent, 6Kg of defoaming agent, 16Kg of wetting dispersant, 1Kg of pH regulator, 500Kg of radiation refrigeration filler, 30Kg of nano titanium dioxide, 250Kg of emulsion and 15Kg of film-forming assistant.
Wherein the thickening agent association type polyurethane thickening agent comprises the following components in percentage by weight: associative alkali swelling thickener: the hydroxyethyl cellulose ether is 2:1: 2.
Wherein the radiation refrigeration filler is titanium dioxide with high infrared reflectivity: the ratio of the nano aluminum oxide is 1: 1.
Wherein the emulsion is silicone-acrylate emulsion.
Wherein the film-forming additive alcohol ester is twelve: propylene glycol butyl ether: the ratio of the dipropylene glycol dimethyl ether to the dipropylene glycol dimethyl ether is 8:4: 3.
(2) Coating of the upper layer: 250Kg of water, 2Kg of thickening agent, 5Kg of defoaming agent, 16Kg of wetting dispersant, 300Kg of photocatalytic filler, 20Kg of conductive powder, 200Kg of super-hydrophilic material and 72Kg of film-forming assistant.
Wherein the photocatalytic filler is nano titanium dioxide.
Wherein the conductive powder nano titanium dioxide: the ratio of tin oxide powder is 2: 1.
Wherein the super-hydrophilic material nano titanium dioxide: the ratio of the nano silicon dioxide is 1: 1.
The paints of examples and comparative examples were respectively coated on exterior walls of the same state and condition and tested, and the results are shown in table 1.
Preparing a test plate: the formulations of examples 1 to 3 and comparative examples 1 to 13 were coated on a non-asbestos fiber cement sheet of 150mm x 70mm x 4mm by 1 pass each with a 120 μm and 80 μm wire bar, and cured for 168 hours to prepare the desired test sheet.
And (3) testing adhesive force: the test was carried out according to GB/T9286.
And (3) testing water resistance: the procedure was as defined in GB/T1733-1993 for the A method. 3 test panels were immersed in three panels of water as specified in GB/T6682-2008. Before the test board is put into operation, the back of the test board needs to be sealed in addition to the edge sealing. After being taken out, the film is visually observed under scattered sunlight, and at least 2 of the 3 test plates have no coating pathological phenomena such as foaming, powder falling, obvious color change and the like, and can be evaluated as 'no abnormity'. If the above coating pathological phenomenon occurs, the method is described in GB/T1766-2008.
Alkali resistance test: the method is carried out according to the regulation of GB/T9265-2009. At least 2 of the 3 test plates have no coating ill-conditions such as foaming, powder falling, obvious color change and the like, and can be evaluated as 'no abnormity'. If the above pathological phenomena appear, the description is made according to GB/T1766-2008.
Rain mark resistance test: the test was performed according to GB/T31815-2015.
And (3) aging resistance test: the xenon arc lamp should meet the regulations of GB/T16422.2-2014. The test was performed according to cycle 1 of GB/T16422.2-2014. During testing, the test plate faces the light source and irradiates for 1000 h. Then taking out the test plate, wherein at least 2 test plates in the 3 test plates have no coating ill-conditions such as foaming, powder falling, obvious color change and the like, and can be evaluated as 'no abnormity'. If the above pathological phenomena appear, the description is made according to GB/T1766-2008.
And (3) surface resistance testing: testing was performed as GBT 1410-2006.
And (3) testing the solar light reflectance: the procedure was as specified in JG/T235-2014 at 6.4.
Atmospheric window (8-13 μm) emissivity test: and testing the infrared emissivity of 8-13 mu m wavelength by using a Reflectometer, such as an SOC-100 Hemificial Directional Reflectometer (SOC-100 Hemispherical Directional Reflectometer), namely the emissivity of the atmospheric window.
TABLE 1
Figure BDA0003023824780000151
Figure BDA0003023824780000161
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (9)

1. A radiation refrigeration self-cleaning coating is characterized by comprising a bottom coating and an upper coating, which are calculated by weight parts,
the primer includes:
Figure FDA0003593180160000011
the radiation refrigeration pigment and filler is selected from at least two of infrared reflection type titanium dioxide, nano aluminum oxide, nano zinc oxide and ceramic powder, and the emulsion is selected from one or more of acrylic emulsion, silicone-acrylate emulsion and hydroxyl acrylic emulsion with the hydroxyl value less than or equal to 100;
the upper layer coating comprises:
Figure FDA0003593180160000012
the conductive powder is selected from one or more of conductive titanium dioxide, conductive mica powder and tin oxide powder, and the hydrophilic material is a composition of nano titanium dioxide and nano silicon dioxide.
2. The radiation refrigeration self-cleaning coating of claim 1, wherein the mass fraction of the radiation refrigeration pigment and filler in the primer is 20-50%.
3. The radiation-cooled self-cleaning coating of claim 1, wherein the photocatalytic filler is selected from nano-alumina coated nano-zinc oxide.
4. The radiation refrigeration self-cleaning coating of claim 1, wherein the emulsion is present in the primer in an amount of 25% to 45% by weight of the primer.
5. The radiation refrigeration self-cleaning coating as claimed in any one of claims 1 to 4, wherein the primer coating comprises 0.01 to 6 mass percent of curing agent.
6. Radiation-cooled self-cleaning coating according to claim 5, characterised in that the curing agent is selected from aqueous isocyanates.
7. The radiation refrigeration self-cleaning coating as claimed in any one of claims 1 to 4, wherein the mass fraction of the photocatalytic filler in the upper coating is 10-30%.
8. The radiation refrigeration self-cleaning coating as claimed in any one of claims 1 to 4, wherein the mass fraction of the hydrophilic material in the upper coating is 20-40%.
9. The radiation refrigeration self-cleaning coating as claimed in any one of claims 1 to 4, wherein the conductive powder in the bottom coating accounts for 3 to 10 mass percent of the bottom coating, and the conductive powder in the upper coating accounts for 2 to 10 mass percent of the upper coating.
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