CN110724420A - Preparation method of composite type colored stain-resistant coating for building exterior wall - Google Patents
Preparation method of composite type colored stain-resistant coating for building exterior wall Download PDFInfo
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- CN110724420A CN110724420A CN201911024005.7A CN201911024005A CN110724420A CN 110724420 A CN110724420 A CN 110724420A CN 201911024005 A CN201911024005 A CN 201911024005A CN 110724420 A CN110724420 A CN 110724420A
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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
- 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
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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
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
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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
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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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
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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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a preparation method of a composite type colored stain-resistant coating for a building exterior wall, which comprises the steps of adding methyl hydrogen-containing silicone oil and dibutyltin dilaurate serving as a catalyst into nano silicon dioxide microspheres, magnetically stirring, carrying out suction filtration, washing, and carrying out ultrasonic oscillation dispersion to obtain modified nano silicon dioxide super-hydrophobic particles; putting the heavy calcium carbonate powder into a ball milling tank, adding ball milling beads, adding a composite modifier and a dispersant absolute ethyl alcohol, performing ball milling modification, drying in a drying oven, cooling, and grinding to obtain surface modified heavy calcium carbonate powder; adding a dispersing agent, a wetting agent and a defoaming agent into water, stirring and dispersing at a high speed, adding infrared ceramic powder talcum powder, surface binary coated rutile titanium dioxide, a film-forming auxiliary agent, modified nano silicon dioxide super-hydrophobic particles and surface modified heavy calcium powder, stirring and dispersing at a low speed, adding iron oxide coated modified hollow glass microspheres, base material silicone-acrylate emulsion, a defoaming agent and a thickening agent, adjusting the pH to 9 by using a pH regulator, and stirring and dispersing uniformly to obtain the coating.
Description
Technical Field
The invention belongs to the field of exterior wall coatings, and particularly relates to a preparation method of a composite type colored stain-resistant coating for an exterior wall of a building.
Background
Compared with the traditional facing brick, the building exterior wall emulsion coating has the advantages of rich colors, simple and convenient construction, safety, reliability and the like, and has very good prospect in the field of exterior wall decoration materials. The pollution is the most main factor causing the deterioration of the performance of the exterior wall latex paint film, the pollution resistance is improved in a simple and effective mode, and the key point influencing the practical application degree of the exterior wall latex paint is realized. The super-hydrophobic surface is researched by taking the lotus leaf effect as inspiration, and the micro-nano structure and the low surface energy are conditions for good hydrophobicity. It has a self-cleaning effect similar to lotus leaves. Therefore, the method for preparing the super-hydrophobic particles by using the modified silicon dioxide is intended to be sprayed on the surface of an outer wall paint film to improve the stain resistance of the super-hydrophobic particles and improve the adhesiveness and the durability of the super-hydrophobic particles.
Because the building outer wall directly receives solar radiation throughout the year, a large amount of heat is accumulated on the surface of the building outer wall, and the heat is transferred into the room to cause great cooling energy consumption, so that the outer wall heat insulation coating is produced at the right moment for achieving the purpose of energy conservation. At present, most of heat insulation coatings for external walls are white, but in practical application, people prefer to select colored coatings to decorate the external walls, the amount of the white coatings is less than two, and the heat insulation coatings account for less.
Disclosure of Invention
The invention aims to solve the existing problems and provides a preparation method of a composite type colored stain-resistant coating for an exterior wall of a building.
The invention is realized by the following technical scheme:
the preparation method of the composite type color contamination-resistant coating for the building exterior wall is characterized by comprising the following steps of:
(1) preparing modified nano-silica super-hydrophobic particles:
adding 7-10 parts of methyl hydrogen-containing silicone oil and 0.1-0.2 part of catalyst dibutyltin dilaurate into 7-10 parts of nano silicon dioxide microspheres, magnetically stirring for 4-5h, performing suction filtration, washing for 3-5 times by using absolute ethyl alcohol, and performing ultrasonic oscillation dispersion to obtain modified nano silicon dioxide super-hydrophobic particles;
methyl hydrogen-containing silicone oil is adopted to modify nano-silica particles, the hydrogen-containing silicone oil is successfully grafted on the surface of the silica microsphere, and the modified silica particles are sprayed on the surface of a matrix to obtain a super-hydrophobic surface; the stain resistance of a paint film sprayed with the super-hydrophobic particles is greatly improved, and the hydrophobicity of the paint film is enhanced; when the surface of the coating film is super-hydrophobic, the extremely low surface can reduce the attachment of pollutants, an air layer is formed by a micro-nano structure, water drops roll to take away the pollutants, and the shielding effect is added, so that the contamination resistance is good together;
(2) the surface modification method of the coarse whiting powder comprises the following steps:
putting 11-18 parts of heavy calcium powder into a ball milling tank, adding ball milling beads according to the ball material ratio of 8:1, adding 0.22-0.36 part of composite modifier, adding 10-20 parts of dispersant absolute ethyl alcohol, carrying out ball milling modification at the rotating speed of 300-85 rpm for 1-2h, drying in a drying box at the temperature of 80-85 ℃, cooling, and grinding to obtain surface modified heavy calcium powder;
the surface modification is carried out on the heavy calcium powder by adopting a wet ball milling method by taking span 60, stearic acid and titanate coupling agent as composite modifiers and absolute ethyl alcohol as dispersing agent, the activation degree of the modified heavy calcium powder is obviously improved, and the sedimentation volume, the oil absorption value and the granularity are obviously reduced compared with those before modification;
(3) the preparation of the composite color contamination-resistant coating for the building exterior wall comprises the following steps:
adding 6-9 parts of dispersing agent, 1-2 parts of wetting agent and 1-2 parts of defoaming agent into 40-50 parts of water, stirring and dispersing for 15-20min at a high speed, adding 6-10 parts of infrared ceramic powder, 5-8 parts of talcum powder, 12-20 parts of surface binary coated rutile titanium dioxide, 2-3 parts of film forming additive and the materials obtained in (1) and (2), stirring and dispersing for 15-20min at a low speed, adding 14-23 parts of iron oxide coated modified hollow glass microspheres, 30-50 parts of base material silicone-acrylic emulsion, 1-2 parts of defoaming agent and 1-2 parts of thickening agent, adjusting the pH to 9 by using a pH regulator, and stirring and dispersing uniformly to obtain the composite colored stain-resistant coating for the exterior wall of the building.
Further, the composite modifier in the step (2) is composed of span 60, stearic acid, titanate coupling agent and the like.
Further, the surface binary coating process of the rutile titanium dioxide in the step (3) comprises the following steps: adding water into 12-20 parts of rutile titanium dioxide to prepare slurry with the mass concentration of 10%, adding 0.12-0.2 part of dispersant sodium hexametaphosphate, placing the slurry in a water bath at 60-70 ℃, controlling the pH to be 9.5-10.5, stirring and dispersing for 30-40min, dropwise adding a zirconium oxychloride solution, carrying out aging treatment for 1-2h, dropwise adding an aluminum sulfate solution, carrying out aging treatment for 1-2h, carrying out suction filtration and washing, drying a filter cake in an oven at 140-145 ℃ for 6-7h, and crushing to obtain surface binary coated rutile titanium dioxide;
wherein the ratio of the zirconium-aluminum coating agent is 2: 1.
Further, the coating modification method of the hollow glass beads in the step (3) comprises the following steps: adding deionized water into 14-23 parts of hollow glass beads to prepare slurry with the mass fraction of 10%, adjusting the pH to 8, placing the slurry in a water bath at the temperature of 80-85 ℃, adding 0.7-1.15 parts of surfactant sodium dodecyl benzene sulfonate, and dropwise adding FeCl with the concentration of 0.5mol/L into the mixture at a ratio of 1:18 under stirring3And adjusting the pH value of the solution to 4, continuing to preserve heat, stirring and aging for 30-40min, filtering, washing with water until the pH value is neutral, drying, and calcining at the temperature of 700-.
Compared with the prior art, the invention has the following advantages:
sodium hexametaphosphate is used as a dispersing agent, aluminum hydroxide and zirconium oxychloride are used as inorganic coating agents, the surface of the rutile titanium dioxide is coated with inorganic coating, and the surface of the rutile titanium dioxide is coated with a binary surface, so that the weather resistance of the rutile titanium dioxide is improved.
The core material hollow glass beads of the heat-insulating coating are subjected to surface modification by adopting a hydrolysis precipitation method, and a layer of iron oxide film is coated on the surface of the hollow glass beads, so that the problem of poor dispersibility of the beads in the water-based coating is solved, and colors are introduced into the hollow glass beads; the dispersibility of the modified microspheres is greatly improved compared with that before modification, and the modified microspheres can be used as a pigment and filler to be added into a colored heat-insulating coating; the silicone-acrylate emulsion with less energy-absorbing groups is selected as the base material, and all the performances of the coating all reach the national heat-insulating coating standard.
Detailed Description
Example 1
The preparation method of the composite type color contamination-resistant coating for the building exterior wall is characterized by comprising the following steps of:
(1) preparing modified nano-silica super-hydrophobic particles:
adding 7 parts of methyl hydrogen-containing silicone oil and 0.1 part of catalyst dibutyltin dilaurate into 7 parts of nano silicon dioxide microspheres, magnetically stirring for 4 hours, performing suction filtration, washing for 3 times by using absolute ethyl alcohol, and performing ultrasonic oscillation dispersion to obtain modified nano silicon dioxide super-hydrophobic particles;
(2) the surface modification method of the coarse whiting powder comprises the following steps:
putting 11 parts of heavy calcium powder into a ball milling tank, adding ball milling beads according to the ball material ratio of 8:1, adding 0.22 part of composite modifier, adding 10 parts of dispersant absolute ethyl alcohol, carrying out ball milling modification at the rotating speed of 300rpm for 1h, drying in a drying box at the temperature of 80-85 ℃, cooling, and grinding to obtain surface modified heavy calcium powder;
wherein the composite modifier comprises span 60, stearic acid, titanate coupling agent and the like by mass;
(3) the preparation of the composite color contamination-resistant coating for the building exterior wall comprises the following steps:
adding 6 parts of dispersing agent, 1 part of wetting agent and 1 part of defoaming agent into 40 parts of water, stirring at a high speed for dispersing for 15min, adding 6 parts of infrared ceramic powder, 5 parts of talcum powder, 12 parts of surface binary coated rutile type titanium dioxide, 2 parts of film-forming assistant and the materials obtained in the steps (1) and (2), stirring at a low speed for dispersing for 15min, adding 14 parts of iron oxide coated modified hollow glass microspheres, 30 parts of base material silicone-acrylic emulsion, 1 part of defoaming agent and 1 part of thickening agent, adjusting the pH to 9 by using a pH regulator, and stirring and dispersing uniformly to obtain the composite color contamination-resistant coating for the exterior wall of the building;
wherein, the surface binary coating process of the rutile titanium dioxide comprises the following steps: adding water into 12 parts of rutile titanium dioxide to prepare slurry with the mass concentration of 10%, adding 0.12 part of dispersant sodium hexametaphosphate into the slurry, placing the slurry in a water bath at 60-70 ℃, controlling the pH to be 9.5, stirring and dispersing for 30min, dropwise adding a zirconium oxychloride solution, carrying out aging treatment for 1h, dropwise adding an aluminum sulfate solution, carrying out aging treatment for 1h, carrying out suction filtration and washing, drying a filter cake in an oven at 140-145 ℃ for 6h, and crushing to obtain surface binary coated rutile titanium dioxide;
the ratio of the zirconium-aluminum coating agent is 2: 1;
the coating modification method of the hollow glass beads comprises the following steps: adding deionized water into 14 parts of hollow glass beads to prepare slurry with the mass fraction of 10%, adjusting the pH to 8, and placing the slurry in a containerAdding 0.7 part of surfactant sodium dodecyl benzene sulfonate into water bath at the temperature of 80-85 ℃, dropwise adding FeCl with the concentration of 0.5mol/L at the ratio of 1:18 under stirring3And adjusting the pH value of the solution to 4, continuing to preserve heat, stirring and aging for 30min, filtering, washing with water until the pH value is neutral, drying, and calcining at 800 ℃ for 1h at 700-.
Example 2
The preparation method of the composite type color contamination-resistant coating for the building exterior wall is characterized by comprising the following steps of:
(1) preparing modified nano-silica super-hydrophobic particles:
adding 10 parts of methyl hydrogen-containing silicone oil and 0.2 part of catalyst dibutyltin dilaurate into 10 parts of nano silicon dioxide microspheres, magnetically stirring for 5 hours, performing suction filtration, washing for 5 times by using absolute ethyl alcohol, and performing ultrasonic oscillation dispersion to obtain modified nano silicon dioxide super-hydrophobic particles;
(2) the surface modification method of the coarse whiting powder comprises the following steps:
putting 18 parts of heavy calcium powder into a ball milling tank, adding ball milling beads according to a ball material ratio of 8:1, adding 0.36 part of composite modifier, adding 20 parts of dispersant absolute ethyl alcohol, performing ball milling modification at a rotating speed of 350rpm for 2 hours, drying in a drying box at the temperature of 80-85 ℃, cooling, and grinding to obtain surface modified heavy calcium powder;
wherein the composite modifier comprises span 60, stearic acid, titanate coupling agent and the like by mass;
(3) the preparation of the composite color contamination-resistant coating for the building exterior wall comprises the following steps:
adding 9 parts of dispersing agent, 2 parts of wetting agent and 2 parts of defoaming agent into 50 parts of water, stirring at a high speed for dispersing for 20min, adding 10 parts of infrared ceramic powder, 8 parts of talcum powder, 20 parts of surface binary coated rutile titanium dioxide, 3 parts of film-forming assistant and the materials obtained in (1) and (2), stirring at a low speed for dispersing for 20min, adding 23 parts of iron oxide coated modified hollow glass microspheres, 50 parts of base material silicone-acrylic emulsion, 2 parts of defoaming agent and 2 parts of thickening agent, adjusting the pH to 9 by using a pH regulator, and stirring and dispersing uniformly to obtain the composite color contamination-resistant coating for the exterior wall of the building;
wherein, the surface binary coating process of the rutile titanium dioxide comprises the following steps: adding water into 20 parts of rutile titanium dioxide to prepare slurry with the mass concentration of 10%, adding 0.2 part of dispersant sodium hexametaphosphate into the slurry, placing the slurry in a water bath at 60-70 ℃, controlling the pH to be 10.5, stirring and dispersing for 40min, dropwise adding a zirconium oxychloride solution, carrying out aging treatment for 2h, dropwise adding an aluminum sulfate solution, carrying out aging treatment for 2h, carrying out suction filtration and washing, drying a filter cake in an oven at 140-145 ℃ for 7h, and crushing to obtain surface binary coated rutile titanium dioxide;
the ratio of the zirconium-aluminum coating agent is 2: 1;
the coating modification method of the hollow glass beads comprises the following steps: adding deionized water into 23 parts of hollow glass beads to prepare slurry with the mass fraction of 10%, adjusting the pH to 8, placing the slurry in a water bath at the temperature of 80-85 ℃, adding 1.15 parts of surfactant sodium dodecyl benzene sulfonate, and dropwise adding FeCl with the concentration of 0.5mol/L in a ratio of 1:18 under stirring3And adjusting the pH value of the solution to 4, continuing to preserve heat, stirring and aging for 40min, filtering, washing with water until the pH value is neutral, drying, and calcining at 800 ℃ for 2h at 700-.
In order to compare the performance of the exterior wall coating prepared by the invention, the exterior wall coatings prepared by the methods of the embodiments 1 and 2 are subjected to performance detection according to the industry standard, and the specific comparison data is shown in the following table 1:
TABLE 1
| Item | Contact angle | Roll angle | Thermal conductivity W/(m.K) | Thermal insulation temperature difference |
| Example 1 | 169° | 3° | 0.2753 | 19.3℃ |
| Example 2 | 168° | 5° | 0.2748 | 18.3℃ |
The exterior wall coating prepared by the method has excellent stain resistance, heat insulation performance and weather resistance, the solar light reflection ratio of the coating is 0.8503, and the hemispherical emissivity is 0.88.
Claims (4)
1. The preparation method of the composite type color contamination-resistant coating for the building exterior wall is characterized by comprising the following steps of:
(1) preparing modified nano-silica super-hydrophobic particles:
adding 7-10 parts of methyl hydrogen-containing silicone oil and 0.1-0.2 part of catalyst dibutyltin dilaurate into 7-10 parts of nano silicon dioxide microspheres, magnetically stirring for 4-5h, performing suction filtration, washing for 3-5 times by using absolute ethyl alcohol, and performing ultrasonic oscillation dispersion to obtain modified nano silicon dioxide super-hydrophobic particles;
the surface modification method of the coarse whiting powder comprises the following steps:
putting 11-18 parts of heavy calcium powder into a ball milling tank, adding ball milling beads according to the ball material ratio of 8:1, adding 0.22-0.36 part of composite modifier, adding 10-20 parts of dispersant absolute ethyl alcohol, carrying out ball milling modification at the rotating speed of 300-85 rpm for 1-2h, drying in a drying box at the temperature of 80-85 ℃, cooling, and grinding to obtain surface modified heavy calcium powder;
(3) the preparation of the composite color contamination-resistant coating for the building exterior wall comprises the following steps:
adding 6-9 parts of dispersing agent, 1-2 parts of wetting agent and 1-2 parts of defoaming agent into 40-50 parts of water, stirring and dispersing for 15-20min at a high speed, adding 6-10 parts of infrared ceramic powder, 5-8 parts of talcum powder, 12-20 parts of surface binary coated rutile titanium dioxide, 2-3 parts of film forming additive and the materials obtained in (1) and (2), stirring and dispersing for 15-20min at a low speed, adding 14-23 parts of iron oxide coated modified hollow glass microspheres, 30-50 parts of base material silicone-acrylic emulsion, 1-2 parts of defoaming agent and 1-2 parts of thickening agent, adjusting the pH to 9 by using a pH regulator, and stirring and dispersing uniformly to obtain the composite colored stain-resistant coating for the exterior wall of the building.
2. The preparation method of the composite color contamination-resistant coating for the exterior wall of the building as claimed in claim 1, wherein the composite modifier in the step (2) comprises span 60, stearic acid, titanate coupling agent and the like.
3. The preparation method of the composite color contamination-resistant coating for the exterior wall of the building according to claim 1, wherein the surface binary coating process of the rutile type titanium dioxide in the step (3) comprises the following steps:
adding water into 12-20 parts of rutile titanium dioxide to prepare slurry with the mass concentration of 10%, adding 0.12-0.2 part of dispersant sodium hexametaphosphate, placing the slurry in a water bath at 60-70 ℃, controlling the pH to be 9.5-10.5, stirring and dispersing for 30-40min, dropwise adding a zirconium oxychloride solution, carrying out aging treatment for 1-2h, dropwise adding an aluminum sulfate solution, carrying out aging treatment for 1-2h, carrying out suction filtration and washing, drying a filter cake in an oven at 140-145 ℃ for 6-7h, and crushing to obtain surface binary coated rutile titanium dioxide;
wherein the ratio of the zirconium-aluminum coating agent is 2: 1.
4. The preparation method of the composite color contamination-resistant coating for the exterior wall of the building according to claim 1, wherein the coating modification method of the hollow glass beads in the step (3) comprises the following steps:
adding deionized water into 14-23 parts of hollow glass beads to prepare slurry with the mass fraction of 10%, adjusting the pH to 8, placing in a water bath at 80-85 ℃, and addingAdding 0.7-1.15 parts of surfactant sodium dodecyl benzene sulfonate, and dropwise adding FeCl with the concentration of 0.5mol/L in a ratio of 1:18 under stirring3And adjusting the pH value of the solution to 4, continuing to preserve heat, stirring and aging for 30-40min, filtering, washing with water until the pH value is neutral, drying, and calcining at the temperature of 700-.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911024005.7A CN110724420A (en) | 2019-10-25 | 2019-10-25 | Preparation method of composite type colored stain-resistant coating for building exterior wall |
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| CN201911024005.7A CN110724420A (en) | 2019-10-25 | 2019-10-25 | Preparation method of composite type colored stain-resistant coating for building exterior wall |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114213925A (en) * | 2021-12-20 | 2022-03-22 | 上海涂固安高科技有限公司 | Heat-reflecting heat-insulating colorful coating for building exterior wall |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114213925A (en) * | 2021-12-20 | 2022-03-22 | 上海涂固安高科技有限公司 | Heat-reflecting heat-insulating colorful coating for building exterior wall |
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