CN117304769A - Refrigeration coating and preparation method thereof - Google Patents

Refrigeration coating and preparation method thereof Download PDF

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Publication number
CN117304769A
CN117304769A CN202311273111.5A CN202311273111A CN117304769A CN 117304769 A CN117304769 A CN 117304769A CN 202311273111 A CN202311273111 A CN 202311273111A CN 117304769 A CN117304769 A CN 117304769A
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China
Prior art keywords
layer
coating
parts
refrigeration
radiation
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CN202311273111.5A
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Chinese (zh)
Inventor
贺伟
朱龙潜
张骏升
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Guangzhou Yaentropy Technology Co ltd
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Guangzhou Yaentropy Technology Co ltd
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Priority to CN202311273111.5A priority Critical patent/CN117304769A/en
Publication of CN117304769A publication Critical patent/CN117304769A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • B05D5/065—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects having colour interferences or colour shifts or opalescent looking, flip-flop, two tones
    • B05D5/066—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects having colour interferences or colour shifts or opalescent looking, flip-flop, two tones achieved by multilayers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
    • B05D1/38—Successively applying liquids or other fluent materials, e.g. without intermediate treatment with intermediate treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • B05D5/061—Special surface effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • B05D5/061—Special surface effect
    • B05D5/063—Reflective effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/57—Three layers or more the last layer being a clear coat
    • B05D7/574—Three layers or more the last layer being a clear coat at least some layers being let to dry at least partially before applying the next layer
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • 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
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    • C09D127/00—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 halogen; Coating compositions based on derivatives of such polymers
    • C09D127/02—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 halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D127/04—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 halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C09D127/06—Homopolymers or copolymers of vinyl chloride
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    • C09D127/00—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 halogen; Coating compositions based on derivatives of such polymers
    • C09D127/02—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 halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D127/12—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 halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C09D127/16—Homopolymers or copolymers of vinylidene fluoride
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    • 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
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    • 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
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    • 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
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    • 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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    • 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
    • C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
    • C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
    • C09D161/16—Condensation polymers of aldehydes or ketones with phenols only of ketones with phenols
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    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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    • C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
    • C09D179/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
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    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
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    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/002—Priming paints
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    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/004—Reflecting paints; Signal paints
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    • 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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    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
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    • 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
    • C08K3/16—Halogen-containing compounds
    • C08K2003/162—Calcium, strontium or barium halides, e.g. calcium, strontium or barium chloride
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    • 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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    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
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    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
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    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3009—Sulfides
    • C08K2003/3036—Sulfides of zinc

Abstract

The invention discloses a refrigeration coating and a preparation method thereof. A refrigeration coating, comprising the following components in turn: a reflective layer; the reflecting layer comprises the following preparation raw materials in parts by mass: 80-95 parts of base material, 10-20 parts of nano particles, 5-10 parts of interfacial agent and 0.1-1 part of film forming auxiliary agent; an interfacial layer; the material of the interface layer comprises at least one of acrylic ester, acrylic ester-styrene copolymer and acrylic ester-acrylamide copolymer; a radiation layer; the radiation layer comprises the following preparation raw materials in parts by mass: 50-80 parts of organic solvent, 10-50 parts of polymer, 1-8 parts of auxiliary agent and 0.1-2 parts of pigment; a protective layer; the material of the protective layer is acrylic resin gloss oil. The refrigeration coating prepared by the invention has obvious cooling effect, and the cooling amplitude exceeds 15 ℃ under the direct irradiation of the sun.

Description

Refrigeration coating and preparation method thereof
Technical Field
The invention relates to the technical field of coating materials, in particular to a refrigeration coating and a preparation method thereof.
Background
According to Stefan-Boltzmann's law, the higher the temperature of an object, the more intense its radiation power. Passive radiation refrigeration is a technology utilizing natural phenomena, and heat dissipation is realized through heat radiation on the surface of an object. Objects on earth can radiate heat in the form of electromagnetic waves to the outer space. In the process of continuous exploration by researchers, the emergence of passive radiation refrigeration technology provides a new idea for solving the global climate problem. This technique is unique in that it can efficiently reflect sunlight without any additional energy input and radiate energy to the outer space through an atmospheric window, thereby achieving cooling.
Only radiation in certain band ranges can reach the ground due to the absorption and reflection of radiation by various particles in the earth's atmosphere. These bands can be divided into optical windows, infrared windows, radio windows, etc., depending on the range. Passive radiation refrigeration is mainly studied for the effect of thermal infrared radiation, so its research scope is mainly focused on the infrared window. Under the comprehensive effect of all components in the atmosphere, the atmospheric radiation in the 8-13 μm wave band is low, and the atmospheric transmittance is high and relatively stable, so that the wave band is commonly called as a first atmospheric window, and has obvious thermodynamic application value.
Compared with the refrigeration mode which needs to consume energy to dissipate heat in most of the current cases, the passive radiation refrigeration technology utilizes an atmosphere transparent window (8-13 μm) to radiate redundant heat into the surrounding environment, including carbon dioxide, ozone, water vapor and the like in the atmosphere, so as to provide refrigeration effect for objects on the earth. This process does not require any energy consumption, making passive radiant refrigeration technology the most attractive refrigeration technology for recent decades.
Early passive radiation refrigerating bodies mainly adopt organic or inorganic metal porous structure materials, metal polymer lamellar coating, high polymer films, white coating, oxide films and other materials, the materials have low emissivity in the wave band of 8-13 mu m, the manufacturing process is complex, the manufacturing cost is high, and the solar radiation reflecting capability of the radiator is insufficient. In addition, when the passive radiation refrigeration coatings are used outdoors, the functional layers are directly exposed, so that the functional layers are easy to pulverize and fall off, and the defects of short service life, poor adhesive force and the like are caused. Based on the problems, the invention provides an economic refrigeration coating and a preparation method thereof.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a refrigeration coating and a preparation method thereof, which enhance the band-selective radiation of the coating by adding a layered structure, nano particles or pores and other means, and increase the adhesive force of the coating and an adhesion material by adding an interface agent. In addition, in order to meet the aesthetic requirements of decoration and construction, functional pigments are added, so that the coating can be made to present different colors while the mechanical strength, the rust resistance and the infrared reflectivity of the coating are improved.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the first aspect of the invention provides a refrigeration coating, which comprises the following components in sequence from bottom to top:
a reflective layer; the reflecting layer comprises the following preparation raw materials in parts by mass: 80-95 parts of base material, 10-20 parts of nano particles, 5-10 parts of interfacial agent and 0.1-1 part of film forming auxiliary agent; the base material is at least one of epoxy resin emulsion, acrylic acid emulsion, pure acrylic emulsion, styrene-acrylic emulsion and water-based acrylic resin;
an interfacial layer; the material of the interface layer comprises at least one of acrylic ester, acrylic ester-styrene copolymer and acrylic ester-acrylamide copolymer;
a radiation layer; the radiation layer comprises the following preparation raw materials in parts by mass: 50-80 parts of organic solvent, 10-50 parts of polymer, 1-8 parts of auxiliary agent and 0.1-2 parts of pigment;
a protective layer; the material of the protective layer is acrylic resin gloss oil.
The refrigerating coating is a multi-layer composite refrigerating coating, and the top layer of the first layer is a transparent protective layer, so that the functional layer of the refrigerating coating is provided with weather resistance and light resistance, and the problems of short service life, pulverization and falling of the existing refrigerating coating can be solved. The second layer is a radiation layer, and the main component is high-reflectivity functional pigment matched with high-infrared-transmissivity nano particles and polymer, so that the 8-13-micrometer middle infrared emission function required by coating refrigeration is provided. The third layer is an interface layer which mainly acts on the radiation layer and the reflecting layer to form strong chemical attractive force such as covalent bond or hydrogen bond, and the like, so that the bonding force and the compatibility between the radiation layer and the reflecting layer are improved, and the durability of the coating is improved. The fourth layer is a reflecting layer, and the fourth layer is mainly used for interacting with the surface of the base material to form a uniform and firm adhesion layer and simultaneously provide an extremely high solar reflecting function.
The raw materials used for the refrigeration coating of the present invention are commercially available.
Preferably, the thickness of the reflective layer is 50-200 μm, the thickness of the interface layer is 20-50 μm, the thickness of the radiation layer is 120-400 μm, and the thickness of the protective layer is 50-100 μm.
Preferably, the nanoparticle comprises ZnO 2 、ZnS、CaF 2 、CaCO 3 、SiO x Mica, rare earth silicate, molybdate, al 2 O 3 、TiO 2 、BaSO 4 、Fe 2 O 3 、CuO、PbCO 3 、MgCO 3 、MgO、BN、Y 2 O 3 At least one of them.
Preferably, the nanoparticle has a particle size of 0.02-50 μm; further preferably; the particle size of the nano particles is 20-2000nm.
Preferably, the interfacial agent in the reflective layer comprises at least one of organofunctional silane, chlorinated polypropylene, and xylene mixed solution; it is further preferable that the mass fraction of the chlorinated polypropylene in the mixed solution of the chlorinated polypropylene and the xylene is 40% -60%.
The interfacial layer material is selected from high molecular compounds containing polar groups such as carboxyl, hydroxyl, amino and the like, and comprises acrylic ester, acrylic ester-styrene copolymer and acrylic ester-acrylamide copolymer.
Preferably, the organic solvent in the radiation layer is at least one of dimethylacetamide, dimethylformamide, dimethylsulfoxide, dimethylurethane, trimethylamine, trimethylphosphate, acrylonitrile, and tetrahydrofuran.
Preferably, the polymer in the radiation layer is at least one of polyvinyl chloride, polymethyl methacrylate, polyacrylonitrile, polystyrene, polybenzimidazole, polyvinylidene fluoride-hexafluoropropylene, and polyetheretherketone.
Preferably, the auxiliary agent in the radiation layer is at least one of a dispersant, a wetting agent, a defoaming agent, a thickening leveling agent, a shrink-proof Kong Chuji, and a film-forming auxiliary agent.
Preferably, the pigment in the radiation layer comprises titanium dioxide (TiO 2 ) Nickel titanium yellow (TiO) 2 NiO), titanium chromium brown (TiO) 2 ·Cr 2 O 3 ) Cobalt blue (CoO.Al) 2 O 3 ) Cobalt green (CoO. ZnO), iron chromium black (FeO. Cr) 2 O 3 ) Iron zinc chromium brown (FeO.ZnO.Cr) 2 O 3 ) Zinc-iron yellow (ZnO. Fe) 2 O 3 ) Cobalt chromium blue (CoO.Cr) 2 O 3 ) At least one of (a) and (b); the invention does not require the pigment source, and conventional commercial pigments can be used.
In the present invention, the acrylic resin varnish is a copolymer synthesized from vinyl monomers such as acrylic acid esters and methacrylic acid esters as main raw materials. Preferably, the acrylic resin gloss oil comprises the following preparation raw materials in parts by mass: 8-20 parts of monomer, 0.1-5 parts of initiator and 75-92 parts of solvent; the monomer comprises at least one of acrylic acid, methacrylic acid, itaconic acid and maleic acid; the acid value of the monomer is 40-60mgKOH/g (resin); the initiator comprises peroxy and azo; the solvent comprises at least one of toluene, xylene, ethyl acetate, butyl Acetate (BAC), propylene glycol methyl ether acetate (PMA).
The second aspect of the invention provides a preparation method of the refrigeration coating, which comprises the following steps:
coating a reflecting layer coating on the surface of the substrate; after drying for 2-4 hours, spraying interface layer coating on the surface of the reflecting layer coating; after drying for 20-40min, coating or spraying diluted radiation layer paint on the surface of the interface layer; and after drying for 2-4 hours, spraying a protective layer on the surface of the radiation layer coating to obtain the refrigeration coating.
Preferably, in the preparation method, the preparation method of the radiation layer coating comprises the following steps: mixing the organic solvent and the polymer until the organic solvent and the polymer are completely dissolved, and then adding the pigment and the auxiliary agent and stirring; further preferably, the preparation method of the radiation layer coating comprises the following steps: mixing the organic solvent and the polymer until the organic solvent and the polymer are completely dissolved, then adding the pigment, the dispersing agent, the wetting agent and the defoaming agent, stirring for 30-40min at normal temperature, finally adding the thickening leveling agent, the shrink-proof Kong Chuji and the film-forming auxiliary agent, and stirring for 9-11h at normal temperature.
Compared with the prior art, the invention has the beneficial effects that:
1. the passive radiation refrigeration coating generally comprises a multi-layer composite structure, the adhesion between materials in the coating and inert base materials (such as polytetrafluoroethylene, polyethylene, silica gel, ABS materials and the like) is insufficient, after long-time use, radiation, heat and other environmental factors can lead to the decomposition, oxidation or losing of structural stability of the materials in the coating, so that chalking and failure phenomena are caused.
2. The refrigeration coating prepared by the invention has obvious cooling effect, and the cooling amplitude exceeds 15 ℃ under the direct irradiation of the sun.
3. The refrigeration coating can be prepared into different colors according to the requirements, and solves the problem of single color of the conventional passive radiation refrigeration coating under the condition of meeting the requirements of sunlight reflection and radiation.
4. The materials used in the invention are all industrial grade materials, the acquisition mode is easy, and the cost is low.
5. The preparation method and the construction method are simple, and the conventional preparation of the passive radiation refrigeration coating with the refrigeration effect can prepare the nano material or the composite material with specific structure and optical property by using complex and expensive processing equipment such as nano imprinting, electron beam evaporation, atomic layer deposition and the like. The principle of the invention is that a refrigeration coating with a porous structure is manufactured by a non-solvent induced phase inversion method, the size of a film micro-hole made of the solution is controlled at a micron level by controlling the concentration, temperature, evaporation time and other parameters of the solution, so as to obtain the capability of effectively scattering solar light wave bands. Compared with the conventional method, the method is simple to operate, high in controllability and wide in applicability, and is beneficial to market popularization.
Drawings
FIG. 1 is a schematic structural view of a refrigeration coating of the present invention;
FIG. 2 is a graph comparing the cooling effect of a coated sample of example 1 and an uncoated coating;
fig. 3 is a coating adhesion hundred test comparison of examples and comparative examples.
Detailed Description
The following describes the invention in more detail. The description of these embodiments is provided to assist understanding of the present invention, but is not intended to limit the present invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The experimental methods in the following examples, unless otherwise specified, are conventional, and the experimental materials used in the following examples, unless otherwise specified, are commercially available.
Example 1
The embodiment provides a refrigeration coating, which sequentially comprises a reflecting layer, an interface layer, a radiation layer and a protective layer from bottom to top, wherein the thickness of each layer is 120 mu m, 30 mu m, 200 mu m and 100 mu m, and the preparation method of the refrigeration coating comprises the following steps:
preparing a protective layer: taking acrylic resin gloss oil as a protective layer material; acrylic gloss oil was purchased from Hua Chang Tate coatings Inc. under the product model SKEJ-984.
Preparing a radiation layer coating: weighing 80g of dimethylacetamide, putting into a beaker, adding 17.8g of polyvinyl chloride, stirring by using a glass rod until the polyvinyl chloride is completely dissolved, adding 0.2g of titanium dioxide, adding 1g of dispersing agent, wetting agent and defoaming agent, stirring uniformly at normal temperature by using a magnetic stirrer for 30-40min, adding 1g of thickening leveling agent, shrink-proof Kong Chuji and film-forming auxiliary agent, stirring continuously at normal temperature for 10h, and adding 5-10 g of water for uniform stirring when in use.
Preparing an interface layer: taking acrylic ester as an interface layer material;
preparing a reflective layer coating: 85g of epoxy resin emulsion is weighed and put into a beaker, 9g of ZnO and 1g of CaF are added 2 1g of a film-forming auxiliary agent was added, 5g of organofunctional silane (KF-550) was added, and the resultant was stirred at room temperature for 3 hours using a magnetic stirrer to obtain a primer coating.
When the coating is used, the reflecting layer coating is sprayed on the substrate by using the spray gun, after the substrate is dried for 3 hours, the interface layer coating is sprayed, after the substrate is dried for 30 minutes, 5% -10% of water is added into the top layer coating, after the substrate is uniformly stirred, the radiation layer coating is sprayed by using the spray gun, after the substrate is dried for 3 hours, the transparent acrylic resin gloss oil protective layer is sprayed on the surface of the radiation layer, and the passive radiation refrigeration coating is obtained.
Example 2
The embodiment provides a refrigeration coating, which sequentially comprises a reflecting layer, an interface layer, a radiation layer and a protective layer from bottom to top, wherein the thickness of each layer is 120 mu m, 30 mu m, 200 mu m and 100 mu m, and the preparation method of the refrigeration coating comprises the following steps:
preparing a protective layer: taking acrylic resin gloss oil as a protective layer material;
preparing a radiation layer coating: weighing 80g of dimethylformamide, putting into a beaker, adding 17.8g of polymethyl methacrylate, stirring by using a glass rod until the polymethyl methacrylate is completely dissolved, adding 0.2g of nickel titanium yellow, adding 1g of dispersing agent, wetting agent and defoaming agent, uniformly stirring at normal temperature by using a magnetic stirrer for 30-40min, adding 1g of thickening leveling agent, shrink-proof Kong Chuji and film-forming auxiliary agent, continuously stirring at normal temperature for 10h to obtain a top layer coating, and uniformly stirring by adding 5-10 g of alcohol when in use.
Preparing an interface layer: taking an acrylic ester-styrene copolymer as an interface layer material;
preparing a reflective layer coating: 85g of epoxy resin liquid is weighed and put into a beaker, 9g of ZnS and 1g of Fe are added 2 O 3 1g of a film-forming auxiliary agent was added, 5g of organofunctional silane (KF-550) was added, and the resultant was stirred at room temperature for 3 hours using a magnetic stirrer to obtain a primer coating.
When the coating is used, the reflecting layer coating is sprayed on the substrate by using the spray gun, after the substrate is dried for 3 hours, the interface layer coating is sprayed, after the substrate is dried for 30 minutes, 5% -10% alcohol is added into the top layer coating, after the substrate is uniformly stirred, the radiation layer coating is sprayed by using the spray gun, after the substrate is dried for 3 hours, the transparent acrylic resin gloss oil protective layer is sprayed on the surface of the radiation layer, and the passive radiation refrigeration coating is obtained.
Example 3
The embodiment provides a refrigeration coating, which sequentially comprises a reflecting layer, an interface layer, a radiation layer and a protective layer from bottom to top, wherein the thickness of each layer is 120 mu m, 30 mu m, 200 mu m and 100 mu m, and the preparation method of the refrigeration coating comprises the following steps:
preparing a protective layer: taking acrylic resin gloss oil as a protective layer material;
preparing a radiation layer coating: weighing 80g of dimethylformamide, putting into a beaker, adding 17.8g of polystyrene, stirring by using a glass rod until the polystyrene is completely dissolved, adding 0.2g of nickel titanium yellow, adding 1g of dispersing agent, wetting agent and defoaming agent, uniformly stirring at normal temperature by using a magnetic stirrer for 30-40min, adding 1g of thickening leveling agent, shrink-proof Kong Chuji and film-forming auxiliary agent, continuously stirring at normal temperature for 10h, and obtaining a top layer coating, wherein 5-10 g of acetone is required to be added for uniform stirring during use.
Preparing an interface layer: taking an acrylic ester-acrylamide copolymer as an interface layer material;
preparing a reflective layer coating: 85g of epoxy resin emulsion is weighed and put into a beaker, 9g of ZnO and 1g of CaF are added 2 1g of a film-forming auxiliary agent was added, 5g of organofunctional silane (KF-550) was added, and the resultant was stirred at room temperature for 3 hours using a magnetic stirrer to obtain a primer coating.
When the coating is used, the reflecting layer coating is sprayed on the substrate by using the spray gun, after the substrate is dried for 3 hours, the interface layer coating is sprayed, after the substrate is dried for 30 minutes, 5% -10% alcohol is added into the top layer coating, after the substrate is uniformly stirred, the radiation layer coating is sprayed by using the spray gun, after the substrate is dried for 3 hours, the transparent acrylic resin gloss oil protective layer is sprayed on the surface of the radiation layer, and the passive radiation refrigeration coating is obtained.
Example 4
The embodiment provides a refrigeration coating, which sequentially comprises a reflecting layer, an interface layer, a radiation layer and a protective layer from bottom to top, wherein the thickness of each layer is 120 mu m, 30 mu m, 200 mu m and 100 mu m, and the preparation method of the refrigeration coating comprises the following steps:
preparing a protective layer: taking acrylic resin gloss oil as a protective layer material;
preparing a radiation layer coating: weighing 80g of dimethyl sulfoxide, putting into a beaker, adding 17.8g of polybenzimidazole, stirring by using a glass rod until the polybenzimidazole is completely dissolved, adding 0.2g of nickel titanium yellow, adding 1g of dispersing agent, wetting agent and defoaming agent, uniformly stirring at normal temperature by using a magnetic stirrer for 30-40min, adding 1g of thickening leveling agent, shrink-proof Kong Chuji and film forming additive, continuously stirring at normal temperature for 10h, and obtaining a top layer coating, wherein 5-10 g of acetone is required to be added for uniform stirring during use.
Preparing an interface layer: taking acrylic ester as an interface layer material;
preparing a reflective layer coating: 85g of epoxy resin emulsion is weighed and put into a beaker, 9g of ZnO and 1g of CaF are added 2 1g of a film-forming auxiliary agent was added, 5g of organofunctional silane (KF-550) was added, and the resultant was stirred at room temperature for 3 hours using a magnetic stirrer to obtain a primer coating.
When the coating is used, the reflecting layer coating is sprayed on the substrate by using the spray gun, after the substrate is dried for 3 hours, the interface layer coating is sprayed, after the substrate is dried for 30 minutes, 5% -10% of water is added into the top layer coating, after the substrate is uniformly stirred, the radiation layer coating is sprayed by using the spray gun, after the substrate is dried for 3 hours, the transparent acrylic resin gloss oil protective layer is sprayed on the surface of the radiation layer, and the passive radiation refrigeration coating is obtained.
Example 5
The embodiment provides a refrigeration coating, which sequentially comprises a reflecting layer, an interface layer, a radiation layer and a protective layer from bottom to top, wherein the thickness of each layer is 120 mu m, 30 mu m, 200 mu m and 100 mu m, and the preparation method of the refrigeration coating comprises the following steps:
preparing a protective layer: taking acrylic resin gloss oil as a protective layer material;
preparing a radiation layer coating: weighing 80g of dimethylacetamide, putting into a beaker, adding 17.8g of polyacrylonitrile, stirring by using a glass rod until the polyacrylonitrile is completely dissolved, adding 0.2g of nickel titanium yellow, adding 1g of dispersing agent, wetting agent and defoaming agent, uniformly stirring at normal temperature by using a magnetic stirrer for 30-40min, adding 1g of thickening leveling agent, shrink-proof Kong Chuji and film forming additive, continuously stirring at normal temperature for 10h, and obtaining a top layer coating, wherein 5-10 g of acetone is required to be added for uniform stirring during use.
Preparing an interface layer: taking an acrylic ester-styrene copolymer as an interface layer material;
preparing a reflective layer coating: 85g of epoxy resin emulsion is weighed and put into a beaker, 9g of ZnO and 1g of CaF are added 2 1g of a film-forming auxiliary agent was added, 5g of organofunctional silane (KF-550) was added, and the resultant was stirred at room temperature for 3 hours using a magnetic stirrer to obtain a primer coating.
When the coating is used, the reflecting layer coating is sprayed on the substrate by using the spray gun, after the substrate is dried for 3 hours, the interface layer coating is sprayed, after the substrate is dried for 30 minutes, 5 to 10 percent of acetone is added into the top layer coating, after the substrate is uniformly stirred, the radiation layer coating is sprayed by using the spray gun, after the substrate is dried for 3 hours, the transparent acrylic resin gloss oil protective layer is sprayed on the surface of the radiation layer, and the passive radiation refrigeration coating is obtained.
Example 6
The embodiment provides a refrigeration coating, which sequentially comprises a reflecting layer, an interface layer, a radiation layer and a protective layer from bottom to top, wherein the thickness of each layer is 120 mu m, 30 mu m, 200 mu m and 100 mu m, and the preparation method of the refrigeration coating comprises the following steps:
preparing a protective layer: taking acrylic resin gloss oil as a protective layer material;
preparing a radiation layer coating: weighing 80g of dimethylformamide, putting into a beaker, adding 17.8g of polyvinylidene fluoride-hexafluoropropylene, stirring by using a glass rod until the polyvinylidene fluoride-hexafluoropropylene is completely dissolved, adding 0.2g of nickel titanium yellow, adding 1g of dispersing agent, wetting agent and defoaming agent, uniformly stirring at normal temperature by using a magnetic stirrer for 30-40min, adding 1g of thickening leveling agent, shrink-proof Kong Chuji and film-forming auxiliary agent, continuously stirring at normal temperature for 10h to obtain a top layer coating, and uniformly stirring by adding 5-10 g of acetone when in use.
Preparing an interface layer: taking an acrylic ester-styrene copolymer as an interface layer material;
preparing a reflective layer coating: 85g of epoxy resin emulsion is weighed and placed in a beaker, 9g of ZnO and 1g of CaF2 are added, 1g of film forming additive is added, 5g of organofunctional silane (KF-550) is added, and the mixture is stirred for 3 hours at normal temperature by using a magnetic stirrer, so that a bottom coating is obtained.
When the coating is used, the reflecting layer coating is sprayed on the substrate by using the spray gun, after the substrate is dried for 3 hours, the interface layer coating is sprayed, after the substrate is dried for 30 minutes, 5% -10% of water is added into the top layer coating, after the substrate is uniformly stirred, the radiation layer coating is sprayed by using the spray gun, after the substrate is dried for 3 hours, the transparent acrylic resin gloss oil protective layer is sprayed on the surface of the radiation layer, and the passive radiation refrigeration coating is obtained.
Example 7
The embodiment provides a refrigeration coating, which sequentially comprises a reflecting layer, an interface layer, a radiation layer and a protective layer from bottom to top, wherein the thickness of each layer is 120 mu m, 30 mu m, 200 mu m and 100 mu m, and the preparation method of the refrigeration coating comprises the following steps:
preparing a protective layer: taking acrylic resin gloss oil as a protective layer material;
preparing a radiation layer coating: weighing 80g of dimethyl sulfoxide, putting into a beaker, adding 17.8g of polyether-ether-ketone, stirring by using a glass rod until the polyether-ether-ketone is completely dissolved, adding 0.2g of nickel-titanium yellow, adding 1g of dispersing agent, wetting agent and defoaming agent, uniformly stirring at normal temperature by using a magnetic stirrer for 30-40min, adding 1g of thickening leveling agent, shrink-proof Kong Chuji and film-forming additive, continuously stirring at normal temperature for 10h, and obtaining a top-layer coating, wherein 5-10 g of acetone is required to be added for uniform stirring during use.
Preparing an interface layer: taking an acrylic ester-styrene copolymer as an interface layer material;
preparing a reflective layer coating: 85g of epoxy resin emulsion is weighed and put into a beaker, 9g of ZnO and 1g of CaF are added 2 1g of a film-forming auxiliary agent was added, 5g of organofunctional silane (KF-550) was added, and the resultant was stirred at room temperature for 3 hours using a magnetic stirrer to obtain a primer coating.
When the coating is used, the reflecting layer coating is sprayed on the substrate by using the spray gun, after the substrate is dried for 3 hours, the interface layer coating is sprayed, after the substrate is dried for 30 minutes, 5% -10% of water is added into the top layer coating, after the substrate is uniformly stirred, the radiation layer coating is sprayed by using the spray gun, after the substrate is dried for 3 hours, the transparent acrylic resin gloss oil protective layer is sprayed on the surface of the radiation layer, and the passive radiation refrigeration coating is obtained.
Comparative example 1
The comparative example provides a conventional refrigeration coating, the preparation method of which comprises the following steps:
weighing 50g P (VdF-HFP), placing in a beaker, adding 50g of N-methylpyrrolidone (NMP), adding 30g of ZnO and 1g of CaF 2 Putting the mixture into a stirrer with the speed of 400-600 r/min to uniformly mix the nano particles and the polymer solution, stirring for 8 hours, and uniformly dispersing the nano particles in the polymer solution to form a coating solution.
Performance testing
The cooling effect of the coating sample is tested, the graph a in fig. 2 shows the test result without the coating, the graph b shows the test result of the embodiment 1, the test method is to compare the coating of the embodiment 1 on the top of the stainless steel security booth with the coating of the top of the stainless steel security booth, the time of 2:00-3:00 of high temperature weather is selected, and the temperature of the top of the security booth is measured by a thermal imager. As can be seen from fig. 2, the temperature drop is more than 15 ℃ in direct irradiation of the sun.
The coating adhesion hundred test pairs of example 1 and comparative example 1 are shown in fig. 3, wherein a graph a in fig. 3 is the test result of comparative example 1, and b graph is the test result of example 1, and the test method is as follows: a 10 x 10 grid is drawn on the surface coating of the helmet by using a hundred grid knife, then the grid area is stuck by using the adhesive tape, the adhesive tape is rapidly torn off, and whether the coating is detached or broken is observed. As can be seen from FIG. 3, example 1 was able to firmly adhere to the surface of the ABS helmet without peeling off the coating, whereas the coating of comparative example 1 showed a large-area peeling phenomenon when a 10X 10 grid was drawn by using a griffe, and the present invention had excellent adhesion.
The embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, and yet fall within the scope of the invention.

Claims (10)

1. The utility model provides a refrigeration coating, its characterized in that, refrigeration coating includes from bottom to top sets gradually:
a reflective layer; the reflecting layer comprises the following preparation raw materials in parts by mass: 80-95 parts of base material, 10-20 parts of nano particles, 5-10 parts of interfacial agent and 0.1-1 part of film forming auxiliary agent; the base material is at least one of epoxy resin emulsion, acrylic acid emulsion, pure acrylic emulsion, styrene-acrylic emulsion and water-based acrylic resin;
an interfacial layer; the material of the interface layer comprises at least one of acrylic ester, acrylic ester-styrene copolymer and acrylic ester-acrylamide copolymer;
a radiation layer; the radiation layer comprises the following preparation raw materials in parts by mass: 50-80 parts of organic solvent, 10-50 parts of polymer, 1-8 parts of auxiliary agent and 0.1-2 parts of pigment;
a protective layer; the material of the protective layer is acrylic resin gloss oil.
2. The refrigeration coating according to claim 1, wherein the thickness of the reflective layer is 50-200 μm, the thickness of the interface layer is 20-50 μm, the thickness of the radiation layer is 120-400 μm, and the thickness of the protective layer is 50-100 μm.
3. The refrigeration coating of claim 1, wherein the nanoparticles comprise ZnO, znO 2 、ZnS、CaF 2 、CaCO 3 、SiO x Mica, rare earth silicate, molybdate, al 2 O 3 、TiO 2 、BaSO 4 、Fe 2 O 3 、CuO、PbCO 3 、MgCO 3 、MgO、BN、Y 2 O 3 At least one of them.
4. The refrigeration coating of claim 1, wherein the interfacial agent in the reflective layer comprises at least one of an organofunctional silane, chlorinated polypropylene, and xylene mixed solution.
5. The refrigeration coating according to claim 1, wherein the organic solvent in the radiation layer is at least one of dimethylacetamide, dimethylformamide, dimethylsulfoxide, dimethylurethane, trimethylamine, trimethylphosphate, acrylonitrile, and tetrahydrofuran.
6. The refrigerant coating of claim 5, wherein the polymer in the radiant layer is at least one of polyvinyl chloride, polymethyl methacrylate, polyacrylonitrile, polystyrene, polybenzimidazole, polyvinylidene fluoride-hexafluoropropylene, polyetheretherketone.
7. The refrigerant coating of claim 1, wherein the auxiliary agent in the radiant layer is at least one of a dispersant, a wetting agent, a defoamer, a thickening leveling agent, shrink-resistant Kong Chuji, and a film forming auxiliary agent.
8. The refrigeration coating of claim 1, wherein the pigment in the radiant layer comprises at least one of titanium dioxide, nickel titanium yellow, titanium chrome brown, cobalt blue, cobalt green, iron chrome black, iron zinc chrome brown, zinc iron yellow, cobalt chrome blue.
9. The refrigeration coating according to claim 1, wherein the acrylic resin gloss oil comprises the following preparation raw materials in parts by mass: 8-20 parts of monomer, 0.1-5 parts of initiator and 75-92 parts of solvent; the monomer comprises at least one of acrylic acid, methacrylic acid, itaconic acid and maleic acid; the acid value of the monomer is 40-60mg KOH/g.
10. A method of preparing a refrigeration coating according to any one of claims 1 to 9, comprising the steps of:
coating a reflecting layer coating on the surface of the substrate; after drying for 2-4 hours, spraying interface layer coating on the surface of the reflecting layer coating; after drying for 20-40min, coating or spraying diluted radiation layer paint on the surface of the interface layer; and after drying for 2-4 hours, spraying a protective layer on the surface of the radiation layer coating to obtain the refrigeration coating.
CN202311273111.5A 2023-09-28 2023-09-28 Refrigeration coating and preparation method thereof Pending CN117304769A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117567894A (en) * 2024-01-11 2024-02-20 中稀易涂科技发展有限公司 High-emission rare earth-based radiation refrigeration coating

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117567894A (en) * 2024-01-11 2024-02-20 中稀易涂科技发展有限公司 High-emission rare earth-based radiation refrigeration coating
CN117567894B (en) * 2024-01-11 2024-04-05 中稀易涂科技发展有限公司 High-emission rare earth-based radiation refrigeration coating

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