CN113736333A - Cerium oxide reflective heat-insulation coating and preparation method thereof - Google Patents
Cerium oxide reflective heat-insulation coating and preparation method thereof Download PDFInfo
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- CN113736333A CN113736333A CN202111137076.5A CN202111137076A CN113736333A CN 113736333 A CN113736333 A CN 113736333A CN 202111137076 A CN202111137076 A CN 202111137076A CN 113736333 A CN113736333 A CN 113736333A
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- cerium oxide
- agent
- primer
- insulation coating
- coating
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- 238000000576 coating method Methods 0.000 title claims abstract description 59
- 229910000420 cerium oxide Inorganic materials 0.000 title claims abstract description 54
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 239000011248 coating agent Substances 0.000 title claims abstract description 50
- 238000009413 insulation Methods 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000003973 paint Substances 0.000 claims abstract description 25
- 239000000049 pigment Substances 0.000 claims abstract description 25
- 239000002270 dispersing agent Substances 0.000 claims abstract description 24
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 21
- 239000011347 resin Substances 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 16
- 239000008367 deionised water Substances 0.000 claims abstract description 14
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 14
- 238000002310 reflectometry Methods 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims description 20
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 15
- 239000000839 emulsion Substances 0.000 claims description 14
- 239000002002 slurry Substances 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 239000004576 sand Substances 0.000 claims description 12
- 239000002518 antifoaming agent Substances 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 239000000080 wetting agent Substances 0.000 claims description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 5
- 229910052746 lanthanum Inorganic materials 0.000 claims description 4
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 claims description 4
- 150000002910 rare earth metals Chemical class 0.000 claims description 4
- 229910052727 yttrium Inorganic materials 0.000 claims description 4
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 4
- 239000004925 Acrylic resin Substances 0.000 claims description 2
- 229920000178 Acrylic resin Polymers 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- IRERQBUNZFJFGC-UHFFFAOYSA-L azure blue Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[S-]S[S-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] IRERQBUNZFJFGC-UHFFFAOYSA-L 0.000 claims description 2
- 229910052797 bismuth Inorganic materials 0.000 claims description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 2
- 229910000416 bismuth oxide Inorganic materials 0.000 claims description 2
- MMXSKTNPRXHINM-UHFFFAOYSA-N cerium(3+);trisulfide Chemical compound [S-2].[S-2].[S-2].[Ce+3].[Ce+3] MMXSKTNPRXHINM-UHFFFAOYSA-N 0.000 claims description 2
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 claims description 2
- DGXKDBWJDQHNCI-UHFFFAOYSA-N dioxido(oxo)titanium nickel(2+) Chemical compound [Ni++].[O-][Ti]([O-])=O DGXKDBWJDQHNCI-UHFFFAOYSA-N 0.000 claims description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 2
- XMHIUKTWLZUKEX-UHFFFAOYSA-N hexacosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCC(O)=O XMHIUKTWLZUKEX-UHFFFAOYSA-N 0.000 claims description 2
- JVWJBBYNBCYSNA-UHFFFAOYSA-N lanthanum(3+) oxygen(2-) yttrium(3+) Chemical compound [O--].[O--].[O--].[Y+3].[La+3] JVWJBBYNBCYSNA-UHFFFAOYSA-N 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- KKZKWPQFAZAUSB-UHFFFAOYSA-N samarium(iii) sulfide Chemical compound [S-2].[S-2].[S-2].[Sm+3].[Sm+3] KKZKWPQFAZAUSB-UHFFFAOYSA-N 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 239000002562 thickening agent Substances 0.000 claims description 2
- 229910000859 α-Fe Inorganic materials 0.000 claims description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims 1
- 238000001579 optical reflectometry Methods 0.000 abstract description 4
- 230000005855 radiation Effects 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 10
- 239000000654 additive Substances 0.000 description 8
- 230000000996 additive effect Effects 0.000 description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910052684 Cerium Inorganic materials 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000001056 green pigment Substances 0.000 description 2
- 239000001023 inorganic pigment Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000001054 red pigment Substances 0.000 description 2
- 239000001052 yellow pigment Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012321 sodium triacetoxyborohydride Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
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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
- 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
-
- 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
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
-
- 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
- C08K2003/221—Oxides; Hydroxides of metals of rare earth metal
- C08K2003/2213—Oxides; Hydroxides of metals of rare earth metal of cerium
-
- 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
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
Abstract
The invention provides a cerium oxide reflective heat-insulation coating and a preparation method thereof, wherein the cerium oxide reflective heat-insulation coating comprises a primer layer and a finish paint layer, and the primer layer comprises the following components: the coating comprises a primer cerium oxide, a first water-based resin, a first pre-dispersant, a first auxiliary agent and deionized water; the finish paint layer comprises the following components in percentage by mass: the coating comprises a second aqueous resin, a second pre-dispersant, a second auxiliary agent, finish paint cerium oxide, an infrared reflection pigment and deionized water. The cerium oxide and the pigment adopted by the coating have high visible light and near infrared light reflectivity, and the coating of the coating has high solar light reflectivity, near infrared reflectivity and hemispherical emissivity, so that solar radiation can be effectively reflected and blocked, and the surface and internal temperature of a building can be reduced.
Description
Technical Field
The invention belongs to the field of coatings and preparation thereof, and particularly relates to a cerium oxide reflective heat-insulation coating and a preparation method thereof.
Background
Among rare earth elements, cerium is the most abundant in nature. Cerium oxide is a material with great application potential and is widely used in the fields of catalysis, corrosion prevention, photocatalysis, ultraviolet absorbers, thermal insulation coatings, glass abrasives and the like due to the special physical and chemical properties of cerium. Patent CN103333581B discloses the application of nano cerium oxide in coating epoxy composite coating, the addition of nano cerium oxide in coating is not more than 10% after being modified by titanate coupling agent, so that the coating has good corrosion resistance. Patent CN109852177A discloses that cerium oxide is added into heat-insulating ceramic paint to solve the problem of cracking and peeling off of paint film, and is used in combination with nano zinc oxide and other compounds to shield infrared ray and reflect ultraviolet ray.
At present, the reflective heat insulation coating takes rutile titanium dioxide as a main material, and mica powder, kaolin, talcum powder, alumina, hollow glass beads and other fillers are used as auxiliary materials to jointly play a reflective heat insulation effect. Patent CN105860717B discloses a colorful reflective heat-insulating coating, which is obtained by adding water color paste into white coating using rutile titanium dioxide, reflective infrared powder, glass beads and the like as heat-insulating functional materials. Patent CN105778689B discloses a color reflective heat insulation coating composed of white coating and coloring pigment, wherein rutile type titanium dioxide is added in the white coating, and the coloring pigment is inorganic pigment. After the color paste or the inorganic pigment is added, the reflectivity of the coating is reduced, the heat insulation effect is obviously reduced, and the temperature of the surface and the interior of a building is increased under the irradiation of sunlight.
Disclosure of Invention
In view of the above, the present invention provides a cerium oxide reflective insulation coating and a preparation method thereof, aiming to overcome the defects in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the cerium oxide reflective thermal insulation coating comprises a primer layer and a finish layer, wherein the primer layer comprises the following components in percentage by mass: 40-50% of primer cerium oxide, 15-40% of first water-based resin, 0.5-3% of first pre-dispersant, 1-8% of first auxiliary agent and 15-35% of deionized water; the finish paint layer comprises the following components in percentage by mass: 15-40% of second water-based resin, 0.5-3% of second pre-dispersant, 1-8% of second auxiliary agent, 10-35% of finish paint cerium oxide, 5-35% of infrared reflection pigment and 15-35% of deionized water.
Preferably, the water-based resin is one or more of pure acrylic emulsion, silicone acrylic resin emulsion, fluorocarbon resin emulsion or organic silicon resin emulsion.
Preferably, the first auxiliary agent and the second auxiliary agent are selected from one or more of a dispersing agent, a wetting agent, a thickening agent, a leveling agent, a defoaming agent, an anti-settling agent, an antifreezing agent, a film forming auxiliary agent and a pH regulator.
Preferably, the infrared reflection pigment is one or more of rare earth and non-rare earth high near infrared reflectivity pigments.
More preferably, the infrared reflection pigment is one or more of iron oxide, bismuth oxide, ultramarine, cerium sulfide, samarium sulfide, yttrium molybdate, lanthanum molybdate, bismuth cerate, lanthanum ferrite, nickel titanate, lanthanum yttrium oxide and yttrium blue.
Preferably, the purity of the primer cerium oxide and the purity of the finish cerium oxide are not lower than 99.99%.
The invention also provides a preparation method of the cerium oxide reflective heat insulation coating, which comprises the following steps:
(1) stirring and pre-dispersing the primer cerium oxide, deionized water and a first pre-dispersing agent, grinding by using a sand mill, and stirring and mixing the ground slurry, a first water-based resin and a first auxiliary agent at a high speed in a dispersing machine until the mixture is uniform to obtain a primer;
(2) stirring deionized water, a second pre-dispersing agent, finish paint cerium oxide and an infrared reflection pigment for pre-dispersing, grinding by using a sand mill, and stirring and mixing the ground slurry, a second water-based resin and a second auxiliary agent in a dispersing machine at a high speed until the mixture is uniform to obtain the finish paint.
Preferably, the step (1) is performed by grinding with a sand mill until the particle diameter D (90) of the primer cerium oxide is 1.0-2.0 μm, and the step (2) is performed by grinding with a sand mill until the particle diameters D (90) of the finish cerium oxide and the infrared reflection pigment in the slurry are 1.5-2.5 μm.
Compared with the prior art, the invention has the following advantages:
(1) the cerium oxide and the pigment adopted by the coating have high visible light and near infrared light reflectivity, and the coating of the coating has high solar light reflectivity, near infrared reflectivity and hemispherical emissivity, so that solar radiation can be effectively reflected and blocked, and the surface and internal temperature of a building can be reduced. Meanwhile, the pollution resistance of the coating is improved, and the sunlight reflectivity change rate after pollution is less than 6%, which is 40-50% higher than that of the common reflective heat-insulating coating.
(2) Compared with cerium oxide, the multi-color infrared reflection pigment has low reflectivity and higher price, the cerium oxide milky paint is used as the primer, the thickness of the finish paint coating can be properly reduced to reduce the cost, part of solar radiation penetrating through the finish paint is further reflected, the reflectivity is improved, and the cooling and heat insulation effects are enhanced.
(3) The top coat and the primer both contain cerium oxide, the cerium oxide is one of important antibacterial materials, the antibacterial and mildewproof effects are obvious and durable, and the mildew-proof antibacterial agent can be reduced or not added into the coating.
(4) The invention selects the environment-friendly near-infrared reflection pigment, does not contain toxic and harmful heavy metals, prepares the environment-friendly coating, can be used as the coating of buildings, oil tank trucks, industrial storage tanks, containers, outdoor electrical cabinets and the like, and can also be used as the home decoration coating.
Detailed Description
Unless defined otherwise, technical terms used in the following examples have the same meanings as commonly understood by one of ordinary skill in the art to which the present invention belongs. The test reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the experimental methods are conventional methods unless otherwise specified.
The material types and routes used in the examples were:
cerium oxide: 4N cerium oxide purchased from northern rare earths;
iron oxide yellow pigment: model 311, purchased from shanghai shenhong pigments, inc;
iron oxide red pigment: type Y101 purchased from shanghai shenhong pigments, inc;
iron oxide green pigment: model 5605 purchased from shanghai shenhong pigments, inc;
aqueous pure acrylic emulsion: 896 type emulsion purchased from Jinan Itanium chemical technology Co., Ltd;
pre-dispersing agent: LOPON885 dispersant purchased from BK Giulini, Germany;
the auxiliary agent comprises a dispersing agent, a wetting agent, a defoaming agent, a multifunctional auxiliary agent, a film forming auxiliary agent and an anti-settling agent, wherein the dispersing agent is purchased by Germany BK Giulini company with the model of LOPON885, the wetting agent is purchased by Germany BYK company with the model of BYK-341, the defoaming agent is purchased by Germany Cognis company with the model of Foamaster 50, the multifunctional auxiliary agent is purchased by French SYNTHRO company with the model of STAB 25B, the film forming auxiliary agent is purchased by Germany Cognis company with the model of EFC 200, and the anti-settling agent is purchased by Nipeng chemical industry Limited company in Nippon city with the model of hydroxyethyl cellulose.
The invention will be described in detail with reference to the following examples.
Example 1
The preparation method of the primer comprises the following steps:
200g of deionized water, 8g of pre-dispersant and 400g of cerium oxide are stirred for pre-dispersion, and ground for 15 minutes by a sand mill until the cerium oxide D (90) in the slurry is 1.2 mu m. And (2) stirring and mixing the slurry with 300g of aqueous pure acrylic emulsion, 8g of dispersing agent, 5g of wetting agent, 5.5g of defoaming agent, 1.5g of multifunctional additive, 30g of film-forming additive and 3g of anti-settling agent in a dispersing machine at a high speed, controlling the linear speed at 8m/s, stirring for 35 minutes, adding 2.5g of pH regulator, and stirring for 5 minutes to obtain the cerium oxide reflective heat-insulating coating primer.
The preparation method of the finish paint comprises the following steps:
200g of deionized water, 6g of pre-dispersing agent, 100g of iron oxide yellow pigment and 300g of cerium oxide are stirred for pre-dispersing, and are ground for 10 minutes by a sand mill until the particle size D (90) of the pigment in the slurry is 1.8 mu m. And (2) stirring and mixing the yellow slurry, 300g of aqueous pure acrylic emulsion, 8g of dispersing agent, 5g of wetting agent, 5.5g of defoaming agent, 1.5g of multifunctional additive, 30g of film-forming additive and 3g of anti-settling agent in a dispersing machine at a high speed, controlling the linear speed at 8m/s, stirring for 35 minutes, adding 2.5g of pH regulator, and stirring for 5 minutes to obtain the yellow reflective heat-insulating coating finish paint A.
The test sample is firstly sprayed with a layer of primer with the thickness of 0.1 mm-0.15 mm, and then is sprayed with a layer of finish paint A with the thickness of 0.05 mm-0.1 mm after being dried. The test of each property was carried out according to the methods described in JG/T235-2014 reflective and insulating coatings for buildings and GB/T25261-2018 reflective and insulating coatings for buildings, and the results are shown in Table 1.
The test specimens were separately sprayed with a layer of topcoat A having a thickness of 0.15mm to 0.25mm as comparative example 1.
Example 2
The primer was prepared as in example 1.
The preparation method of the finish paint comprises the following steps:
300g of deionized water, 6g of pre-dispersing agent, 80g of iron oxide red pigment and 320g of cerium oxide are stirred for pre-dispersing, and are ground for 10 minutes by a sand mill until the particle size D (90) of the pigment in the slurry is 1.5 mu m. And (3) stirring and mixing the red slurry, 300g of water-based pure acrylic emulsion, 8g of dispersing agent, 5g of wetting agent, 5.5g of defoaming agent, 1.5g of multifunctional additive, 30g of film-forming additive and 3g of anti-settling agent in a dispersing machine at a high speed, controlling the linear speed at 8m/s, stirring for 35 minutes, adding 2.5g of pH regulator, and stirring for 5 minutes to obtain the brick red reflective heat-insulating coating finish B.
The test sample is firstly sprayed with a layer of primer with the thickness of 0.1 mm-0.15 mm, and then is sprayed with a layer of finish paint B with the thickness of 0.05 mm-0.1 mm after being dried. The test of each property was carried out according to the methods described in JG/T235-2014 reflective and insulating coatings for buildings and GB/T25261-2018 reflective and insulating coatings for buildings, and the results are shown in Table 1.
The test specimen was separately sprayed with a layer of topcoat B having a thickness of 0.15mm to 0.25mm as comparative example 2.
Example 3
The primer was prepared as in example 1.
The preparation method of the finish paint comprises the following steps:
300g of deionized water, 6g of pre-dispersing agent, 60g of iron oxide green pigment and 240g of cerium oxide are stirred for pre-dispersing, and are ground for 10 minutes by a sand mill until the particle size D (90) of the pigment in the slurry is 1.3 mu m. And (2) stirring and mixing the green slurry, 300g of aqueous pure acrylic emulsion, 8g of dispersing agent, 5g of wetting agent, 5.5g of defoaming agent, 1.5g of multifunctional additive, 30g of film-forming additive and 3g of anti-settling agent in a dispersing machine at a high speed, controlling the linear speed at 8m/s, stirring for 35 minutes, adding 2.5g of pH regulator, and stirring for 5 minutes to obtain the green reflective heat-insulating coating finish paint 3.
The test sample is firstly sprayed with a layer of primer with the thickness of 0.1 mm-0.15 mm, and then is sprayed with a layer of finish C with the thickness of 0.05 mm-0.1 mm after being dried. The test of each property was carried out according to the methods described in JG/T235-2014 reflective and insulating coatings for buildings and GB/T25261-2018 reflective and insulating coatings for buildings, and the results are shown in Table 1.
The test specimens were sprayed alone with a layer of topcoat C having a thickness of 0.15mm to 0.25mm as comparative example 3.
TABLE 1 reflective thermal insulating coating prepared in examples 1 to 3 and performance index of comparative examples 1 to 3
As can be seen from Table 1, the cerium oxide primer is not used in the comparative examples 1 to 3, and compared with the examples 1 to 3, the reflectivity is low and the heat insulation temperature difference is smaller, so that the cerium oxide primer can reflect the solar radiation penetrating through the surface coating, and the heat insulation and temperature reduction performance of the coating is further improved. The double-layer colorful reflective heat-insulation coating is rich and various in color, adjustable, higher in reflectivity of infrared bands than commercially available colorful building coatings, and excellent in heat-insulation and cooling performances.
The cerium oxide base coat double-layer reflective heat-insulation coating prepared by the invention has excellent weather resistance and stain resistance, has no phenomena of cracking, discoloration and the like after artificial weathering, reduces the solar reflectance by less than 2 percent, reduces the solar reflectance change rate after pollution by less than 6 percent, has long service life and obvious heat insulation and cooling effects.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (7)
1. A cerium oxide reflective insulation coating is characterized in that: the paint comprises a primer layer and a finish paint layer, wherein the primer layer comprises the following components in percentage by mass: 40-50% of primer cerium oxide, 15-40% of first water-based resin, 0.5-3% of first pre-dispersant, 1-8% of first auxiliary agent and 15-35% of deionized water; the finish paint layer comprises the following components in percentage by mass: 15-40% of second water-based resin, 0.5-3% of second pre-dispersant, 1-8% of second auxiliary agent, 10-35% of finish paint cerium oxide, 5-35% of infrared reflection pigment and 15-35% of deionized water;
wherein the purity of the primer cerium oxide and the purity of the finish cerium oxide are not lower than 99.99 percent.
2. The cerium oxide reflective insulation coating according to claim 1, wherein: the water-based resin is one or more of pure acrylic emulsion, silicone acrylic resin emulsion, fluorocarbon resin emulsion or organic silicon resin emulsion.
3. The cerium oxide reflective insulation coating according to claim 1, wherein: the first auxiliary agent and the second auxiliary agent are selected from one or more of dispersing agent, wetting agent, thickening agent, flatting agent, defoaming agent, anti-settling agent, antifreezing agent, film-forming auxiliary agent and pH regulator.
4. The cerium oxide reflective insulation coating according to claim 1, wherein: the infrared reflection pigment is one or more of rare earth and non-rare earth high near infrared reflectivity pigments.
5. The cerium oxide reflective insulation coating according to claim 1, wherein: the infrared reflection pigment is one or more of ferric oxide, bismuth oxide, ultramarine, cerium sulfide, samarium sulfide, yttrium molybdate, lanthanum molybdate, bismuth cerate, lanthanum ferrite, nickel titanate, lanthanum yttrium oxide and yttrium blue.
6. The method for preparing cerium oxide reflective insulation coating according to any one of claims 1 to 5, wherein: the method comprises the following steps:
(1) stirring and pre-dispersing the primer cerium oxide, deionized water and a first pre-dispersing agent, grinding by using a sand mill, and stirring and mixing the ground slurry, a first water-based resin and a first auxiliary agent at a high speed in a dispersing machine until the mixture is uniform to obtain a primer;
(2) stirring deionized water, a second pre-dispersing agent, finish paint cerium oxide and an infrared reflection pigment for pre-dispersing, grinding by using a sand mill, and stirring and mixing the ground slurry, a second water-based resin and a second auxiliary agent in a dispersing machine at a high speed until the mixture is uniform to obtain the finish paint.
7. The method for preparing the cerium oxide reflective insulation coating of claim 6, wherein: and (2) grinding by using a sand mill in the step (1) until the particle size D (90) of the primer cerium oxide is 1.0-2.0 μm, and grinding by using the sand mill in the step (2) until the particle sizes D (90) of the finish cerium oxide and the infrared reflection pigment in the slurry are 1.5-2.5 μm.
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