CN110540784A - Reflective heat-insulating coating - Google Patents
Reflective heat-insulating coating Download PDFInfo
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- CN110540784A CN110540784A CN201910845065.9A CN201910845065A CN110540784A CN 110540784 A CN110540784 A CN 110540784A CN 201910845065 A CN201910845065 A CN 201910845065A CN 110540784 A CN110540784 A CN 110540784A
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- 238000000576 coating method Methods 0.000 title claims abstract description 58
- 239000011248 coating agent Substances 0.000 title claims abstract description 53
- 239000000839 emulsion Substances 0.000 claims abstract description 75
- 239000011521 glass Substances 0.000 claims abstract description 43
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 33
- 239000011324 bead Substances 0.000 claims abstract description 29
- 229920002678 cellulose Polymers 0.000 claims abstract description 29
- 239000001913 cellulose Substances 0.000 claims abstract description 29
- -1 dodecyl alcohol ester Chemical class 0.000 claims abstract description 27
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 18
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 17
- 239000003899 bactericide agent Substances 0.000 claims abstract description 17
- 239000004014 plasticizer Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- LQZZUXJYWNFBMV-UHFFFAOYSA-N ethyl butylhexanol Natural products CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000003449 preventive effect Effects 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 42
- 229920001296 polysiloxane Polymers 0.000 claims description 32
- 239000000203 mixture Substances 0.000 claims description 26
- 239000000020 Nitrocellulose Substances 0.000 claims description 21
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 claims description 21
- 229920001220 nitrocellulos Polymers 0.000 claims description 21
- 239000000377 silicon dioxide Substances 0.000 claims description 21
- 235000012239 silicon dioxide Nutrition 0.000 claims description 21
- 239000013078 crystal Substances 0.000 claims description 17
- 229920001046 Nanocellulose Polymers 0.000 claims description 16
- 229910019142 PO4 Inorganic materials 0.000 claims description 16
- 239000010452 phosphate Substances 0.000 claims description 16
- 229920002635 polyurethane Polymers 0.000 claims description 16
- 239000004814 polyurethane Substances 0.000 claims description 16
- 239000002480 mineral oil Substances 0.000 claims description 12
- 235000010446 mineral oil Nutrition 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 9
- YYSWJDZUNVRKAZ-UHFFFAOYSA-N 3-nonyl-2-octylphenol Chemical compound C(CCCCCCCC)C=1C(=C(C=CC1)O)CCCCCCCC YYSWJDZUNVRKAZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 8
- 230000002209 hydrophobic effect Effects 0.000 claims description 8
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 8
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 8
- 229920001289 polyvinyl ether Polymers 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 8
- 239000000344 soap Substances 0.000 claims description 8
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 6
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 6
- SIXWIUJQBBANGK-UHFFFAOYSA-N 4-(4-fluorophenyl)-1h-pyrazol-5-amine Chemical compound N1N=CC(C=2C=CC(F)=CC=2)=C1N SIXWIUJQBBANGK-UHFFFAOYSA-N 0.000 claims description 5
- 239000004408 titanium dioxide Substances 0.000 claims description 5
- 229920001747 Cellulose diacetate Polymers 0.000 claims description 4
- 229920002284 Cellulose triacetate Polymers 0.000 claims description 3
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 claims description 3
- 229920006217 cellulose acetate butyrate Polymers 0.000 claims description 3
- BEGLCMHJXHIJLR-UHFFFAOYSA-N methylisothiazolinone Chemical class CN1SC=CC1=O BEGLCMHJXHIJLR-UHFFFAOYSA-N 0.000 claims description 3
- DHNRXBZYEKSXIM-UHFFFAOYSA-N chloromethylisothiazolinone Chemical class CN1SC(Cl)=CC1=O DHNRXBZYEKSXIM-UHFFFAOYSA-N 0.000 claims description 2
- 238000012986 modification Methods 0.000 abstract description 5
- 230000004048 modification Effects 0.000 abstract description 5
- 238000005507 spraying Methods 0.000 abstract description 5
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract description 3
- 239000007888 film coating Substances 0.000 abstract description 3
- 238000009501 film coating Methods 0.000 abstract description 3
- 239000011810 insulating material Substances 0.000 abstract description 3
- 239000000843 powder Substances 0.000 abstract description 3
- 239000004094 surface-active agent Substances 0.000 abstract description 3
- 239000004005 microsphere Substances 0.000 description 16
- 239000011247 coating layer Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000013530 defoamer Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 2
- 239000002671 adjuvant Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- CVHZOJJKTDOEJC-UHFFFAOYSA-N saccharin Chemical compound C1=CC=C2C(=O)NS(=O)(=O)C2=C1 CVHZOJJKTDOEJC-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- C09D5/004—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
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of decorative coatings, in particular to a reflective heat-insulating coating which comprises the following components in parts by mass: 20-30 parts of water, 10-20 parts of acrylic emulsion, 16-20 parts of surface-coated modified superfine hollow glass beads, 10-12 parts of rutile titanium dioxide, 10-12 parts of elastic emulsion, 2-12 parts of cellulose, 0.2-0.4 part of defoaming agent, 0.12-0.32 part of plasticizer, 1.3-4.8 parts of dodecyl alcohol ester film-forming assistant, 0.1-0.5 part of flatting agent and 0.12-0.32 part of mildew preventive and bactericide; according to the invention, the dispersion and compatibility of the reflective heat-insulating coating are improved by adding the surface-coated modified superfine hollow glass beads as a heat-insulating material, the surface modification purpose is achieved by performing film coating treatment on the surface of the powder by using a surfactant, a water-soluble or oil-soluble high molecular compound and the like, and the cementing capacity, strength, temperature resistance and the like of the superfine hollow glass beads are further improved, so that the coating uniformity of the reflective heat-insulating coating and the spraying quality of a coating film are improved.
Description
Technical Field
The invention relates to the technical field of decorative coatings, in particular to a reflective heat-insulating coating and a preparation method thereof.
Background
The reflective heat-insulating coating is composed of base material, heat-reflecting pigment, filler and adjuvant. The purpose of heat insulation is achieved by efficiently reflecting sunlight. The reflective heat insulation coating is a novel cooling coating integrating reflection, radiation and hollow microsphere heat insulation, the coating can highly reflect solar infrared rays and ultraviolet rays in the range of 400nm to 2500nm, does not allow solar heat to be accumulated on the surface of an object to be heated, can automatically radiate heat for cooling, radiates the heat on the surface of the object into the air, reduces the temperature of the object, can radiate the heat for reducing the temperature even in cloudy days and at night, and meanwhile, the hollow microsphere with extremely low heat conductivity coefficient is put into the coating to isolate the transfer of heat energy, can isolate external heat for conducting the inside of the object even when the atmospheric temperature is very high, and three effects ensure the cooling of the object coated with the coating and ensure that the internal space of the object can keep a constant temperature state for a long time.
The existing reflective heat-insulating coating has the following problems: 1. the price is high, and the price of the reflective heat-insulating coating is higher than that of a plurality of exterior wall coatings, so that the use cost is high, 2, the coating is easy to fall off, and the tensile strength and the elongation at break of the coating film still need to be improved.
Disclosure of Invention
The purpose of the invention is: overcomes the defects in the prior art, and provides the reflective heat-insulating coating with low production and use cost and high tensile strength.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
The reflective heat-insulating coating comprises the following components in parts by mass: 20-30 parts of water, 10-20 parts of acrylic emulsion, 16-20 parts of surface-coated modified superfine hollow glass beads, 10-12 parts of rutile titanium dioxide, 10-12 parts of elastic emulsion, 2-12 parts of cellulose, 0.2-0.4 part of defoaming agent, 0.12-0.32 part of plasticizer, 1.3-4.8 parts of dodecyl alcohol ester film-forming assistant, 0.1-0.5 part of flatting agent and 0.12-0.32 part of mildew preventive and bactericide.
Further, the surface-coated modified superfine hollow glass bead is one of a titanium dioxide film-coated modified superfine hollow glass bead, a silicon dioxide film-coated modified superfine hollow glass bead and a silicon dioxide/polytetrafluoroethylene composite film-coated modified superfine hollow glass bead.
Furthermore, the elastic emulsion is a mixture of pure acrylic emulsion, silicone acrylic emulsion and aqueous polyurethane emulsion, and the mass ratio of the pure acrylic emulsion, the silicone acrylic emulsion and the aqueous polyurethane emulsion is 3-5:1: 2.
Furthermore, the cellulose is selected from one or more of nano-crystalline cellulose, cellulose nitrate, cellulose triacetate, cellulose diacetate and cellulose acetate butyrate.
Further, the cellulose is a mixture of nano cellulose crystal and cellulose nitrate, and the mass ratio of the nano cellulose crystal to the cellulose nitrate is 1: 1-3.
Further, the defoaming agent is composed of the following mineral oil defoaming agents in parts by mass: 10-15 parts of mineral oil, 1-3 parts of nonyl (octyl) phenol polyoxyethylene ether, 1.2-3.6 parts of soap salt, 10-15 parts of C4-C12 aliphatic hydrocarbon, 1.2-3.2 parts of hydrophobic silicon dioxide and 0.2-0.8 part of polyvinyl ether.
Further, the plasticizer is selected from one of dioctyl phthalate and diisooctyl phthalate.
Furthermore, the leveling agent is a mixture of a phosphate modified acrylic leveling agent and organic modified polysiloxane, and the mass ratio of the phosphate modified acrylic leveling agent to the organic modified polysiloxane is 1: 2-3.
Furthermore, the mildew-proof bactericide selects one of JF-90, poly 2-methyl-4-isothiazoline-3-ketone compounds and poly 5-chloro-2-methyl-4-isothiazoline-3-ketone compounds.
The technical scheme adopted by the invention has the beneficial effects that:
According to the invention, the dispersion and compatibility of the reflective heat-insulating coating are improved by adding the surface-coated modified superfine hollow glass beads as a heat-insulating material, the surface modification purpose is achieved by performing film coating treatment on the surface of the powder by using a surfactant, a water-soluble or oil-soluble high molecular compound and the like, and the cementing capacity, strength, temperature resistance and the like of the superfine hollow glass beads are further improved, so that the coating uniformity of the reflective heat-insulating coating and the spraying quality of a coating film are improved.
The surface-coated modified superfine hollow glass microspheres in the invention are prepared by coating the modified superfine hollow glass microspheres with the silicon dioxide film and coating the modified superfine hollow glass microspheres with the silicon dioxide/polytetrafluoroethylene composite film, and have strong surface hydrophobicity, so that the hollow glass microspheres have good fluidity due to the surface hydrophobicity, and the spraying smoothness of the reflective insulation coating is improved.
according to the invention, the mixture of the nano-crystalline cellulose and the cellulose nitrate is used as cellulose to be added into the reflective heat-insulating coating, so that the tensile strength of the coating layer is improved, the tensile strength is improved by 50% compared with the strength when the nano-crystalline cellulose is singly adopted, the tensile strength is improved by 60% compared with the strength when the cellulose nitrate is singly adopted, and the tensile strength is improved by 70% compared with the strength of the existing coating layer.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments in order to make the above objects, features and advantages more apparent and understandable.
The reflective heat-insulating coating comprises the following components in parts by mass: 20-30 parts of water, 10-20 parts of acrylic emulsion, 16-20 parts of surface-coated modified superfine hollow glass beads, 10-12 parts of rutile titanium dioxide, 10-12 parts of elastic emulsion, 2-12 parts of cellulose, 0.2-0.4 part of defoaming agent, 0.12-0.32 part of plasticizer, 1.3-4.8 parts of dodecyl alcohol ester film-forming assistant, 0.1-0.5 part of flatting agent and 0.12-0.32 part of mildew preventive and bactericide. According to the invention, the dispersion and compatibility of the reflective heat-insulating coating are improved by adding the surface-coated modified superfine hollow glass beads as a heat-insulating material, the surface modification purpose is achieved by performing film coating treatment on the surface of the powder by using a surfactant, a water-soluble or oil-soluble high molecular compound and the like, and the cementing capacity, strength, temperature resistance and the like of the superfine hollow glass beads are further improved, so that the coating uniformity of the reflective heat-insulating coating and the spraying quality of a coating film are improved.
The surface-coated modified superfine hollow glass microspheres in the invention are prepared by coating the modified superfine hollow glass microspheres with the silicon dioxide film and coating the modified superfine hollow glass microspheres with the silicon dioxide/polytetrafluoroethylene composite film, and have strong surface hydrophobicity, so that the hollow glass microspheres have good fluidity due to the surface hydrophobicity, and the spraying smoothness of the reflective insulation coating is improved.
As a preferable embodiment, the surface-coated modified ultrafine hollow glass beads in this embodiment are selected from one of titanium dioxide film-coated modified ultrafine hollow glass beads, silicon dioxide film-coated modified ultrafine hollow glass beads, and silicon dioxide/polytetrafluoroethylene composite film-coated modified ultrafine hollow glass beads.
As a preferred embodiment, the elastic emulsion in this embodiment is a mixture of a pure acrylic emulsion, a silicone acrylic emulsion and an aqueous polyurethane emulsion, and the mass ratio of the pure acrylic emulsion, the silicone acrylic emulsion and the aqueous polyurethane emulsion is 3-5:1:2, and preferably, the cellulose in this embodiment is one or more of nano cellulose crystal, cellulose nitrate, cellulose triacetate, cellulose diacetate and cellulose acetate butyrate.
As a preferred embodiment, the cellulose in the embodiment is a mixture of nano cellulose crystal and nitrocellulose, and the mass ratio of the nano cellulose crystal to the nitrocellulose is 1: 1-3. According to the invention, the mixture of the nano-crystalline cellulose and the cellulose nitrate is used as cellulose to be added into the reflective heat-insulating coating, so that the tensile strength of the coating layer is improved, the tensile strength is improved by 50% compared with the strength when the nano-crystalline cellulose is singly adopted, the tensile strength is improved by 60% compared with the strength when the cellulose nitrate is singly adopted, and the tensile strength is improved by 70% compared with the strength of the existing coating layer.
As a preferred embodiment, the defoamer in this embodiment is a mineral oil defoamer, and the mineral oil defoamer comprises the following components in parts by mass: 10-15 parts of mineral oil, 1-3 parts of nonyl (octyl) phenol polyoxyethylene ether, 1.2-3.6 parts of soap salt, 10-15 parts of C4-C12 aliphatic hydrocarbon, 1.2-3.2 parts of hydrophobic silicon dioxide and 0.2-0.8 part of polyvinyl ether. The mineral oil defoaming agent adopting the formula has stable chemical property, and has the advantages of rapid defoaming, high efficiency, lasting defoaming and good economical efficiency; can be dispersed in water to form an emulsion with moderate stability.
As a preferred embodiment, the plasticizer in this embodiment is selected from one of dioctyl phthalate and diisooctyl phthalate.
As a preferred embodiment, the mixture of the phosphate modified acrylic leveling agent and the organic modified polysiloxane is used as the leveling agent in the embodiment, and the mass ratio of the phosphate modified acrylic leveling agent to the organic modified polysiloxane is 1: 2-3.
As a preferred embodiment, the mildew-proof bactericide in this embodiment is one selected from JF-90, poly-2-methyl-4-isothiazolin-3-one compounds and poly-5-chloro-2-methyl-4-isothiazolin-3-one compounds.
The preparation method of the reflective heat-insulating coating adopts the prior art, so the preparation method does not pursue any more.
Example 1
The reflective heat-insulating coating comprises the following components in parts by mass: 20 parts of water, 10 parts of acrylic emulsion, 16 parts of surface-coated modified superfine hollow glass beads, 10 parts of rutile titanium dioxide, 10 parts of elastic emulsion, 2 parts of cellulose, 0.2 part of defoaming agent, 0.12 part of plasticizer, 1.3 parts of dodecyl alcohol ester film-forming assistant, 0.1 part of flatting agent and 0.12 part of mildew-proof bactericide.
Wherein, the surface coated modified superfine hollow glass bead is coated with a titanium dioxide film.
Wherein the elastic emulsion is a mixture of pure acrylic emulsion, silicone acrylic emulsion and aqueous polyurethane emulsion, and the mass ratio of the pure acrylic emulsion, the silicone acrylic emulsion and the aqueous polyurethane emulsion is 3:1: 2.
Wherein the cellulose is selected from nanometer cellulose crystal.
The defoaming agent comprises the following components in parts by mass: 10 parts of mineral oil, 1 part of nonyl (octyl) phenol polyoxyethylene ether, 1.2 parts of soap salt, 10 parts of C4-C12 aliphatic hydrocarbon, 1.2 parts of hydrophobic silicon dioxide and 0.2 part of polyvinyl ether.
Wherein the plasticizer is dioctyl phthalate.
wherein the leveling agent is a mixture of a phosphate modified acrylic leveling agent and organic modified polysiloxane, and the mass ratio of the phosphate modified acrylic leveling agent to the organic modified polysiloxane is 1:2.
Wherein, JF-90 is selected as the mildew-proof bactericide.
Example 2
The reflective heat-insulating coating comprises the following components in parts by mass: 24 parts of water, 12 parts of acrylic emulsion, 17 parts of surface-coated modified superfine hollow glass beads, 11 parts of rutile titanium dioxide, 10 parts of elastic emulsion, 4 parts of cellulose, 0.2 part of defoaming agent, 0.15 part of plasticizer, 1.5 parts of dodecyl alcohol ester film-forming assistant, 0.2 part of flatting agent and 0.15 part of mildew-proof bactericide.
Wherein, the surface coated modified superfine hollow glass bead is coated with a titanium dioxide film.
Wherein the elastic emulsion is a mixture of pure acrylic emulsion, silicone acrylic emulsion and aqueous polyurethane emulsion, and the mass ratio of the pure acrylic emulsion, the silicone acrylic emulsion and the aqueous polyurethane emulsion is 3.2:1: 2.
Wherein the cellulose is a mixture of nano cellulose crystal and cellulose nitrate, and the mass ratio of the nano cellulose crystal to the cellulose nitrate is 1: 1.
The defoaming agent comprises the following components in parts by mass: 11 parts of mineral oil, 1.2 parts of nonyl (octyl) phenol polyoxyethylene ether, 1.5 parts of soap salt, 11 parts of C4-C12 aliphatic hydrocarbon, 1.5 parts of hydrophobic silicon dioxide and 0.3 part of polyvinyl ether.
Wherein the plasticizer is dioctyl phthalate.
Wherein the leveling agent is a mixture of a phosphate modified acrylic leveling agent and organic modified polysiloxane, and the mass ratio of the phosphate modified acrylic leveling agent to the organic modified polysiloxane is 1: 2.1.
Wherein, the mildew-proof bactericide adopts a poly 2-methyl-4-isothiazoline-3-ketone compound.
Example 3
The reflective heat-insulating coating comprises the following components in parts by mass: 25 parts of water, 15 parts of acrylic emulsion, 18 parts of surface-coated modified superfine hollow glass beads, 11 parts of rutile titanium dioxide, 11 parts of elastic emulsion, 8 parts of cellulose, 0.3 part of defoaming agent, 0.24 part of plasticizer, 3.2 parts of dodecyl alcohol ester film-forming assistant, 0.3 part of flatting agent and 0.21 part of mildew-proof bactericide.
Wherein, the surface coated modified superfine hollow glass microsphere selects a silicon dioxide/polytetrafluoroethylene composite film coated modified superfine hollow glass microsphere.
Wherein the elastic emulsion is a mixture of pure acrylic emulsion, silicone acrylic emulsion and aqueous polyurethane emulsion, and the mass ratio of the pure acrylic emulsion, the silicone acrylic emulsion and the aqueous polyurethane emulsion is 4:1: 2.
Wherein the cellulose is a mixture of nano cellulose crystal and cellulose nitrate, and the mass ratio of the nano cellulose crystal to the cellulose nitrate is 1:2.
The defoaming agent comprises the following components in parts by mass: 12 parts of mineral oil, 2 parts of nonyl (octyl) phenol polyoxyethylene ether, 2.4 parts of soap salt, 12 parts of C4-C12 aliphatic hydrocarbon, 2.1 parts of hydrophobic silicon dioxide and 0.5 part of polyvinyl ether.
Wherein the plasticizer is diisooctyl phthalate.
Wherein the leveling agent is a mixture of a phosphate modified acrylic leveling agent and organic modified polysiloxane, and the mass ratio of the phosphate modified acrylic leveling agent to the organic modified polysiloxane is 1: 2.5.
Wherein, the mildew-proof bactericide adopts a poly 2-methyl-4-isothiazoline-3-ketone compound.
Example 4
The reflective heat-insulating coating comprises the following components in parts by mass: 28 parts of water, 18 parts of acrylic emulsion, 18 parts of surface-coated modified superfine hollow glass beads, 12 parts of rutile titanium dioxide, 12 parts of elastic emulsion, 10 parts of cellulose, 0.32 part of defoaming agent, 0.3 part of plasticizer, 4.5 parts of dodecyl alcohol ester film-forming assistant, 0.4 part of flatting agent and 0.3 part of mildew-proof bactericide.
Wherein, the surface coated modified superfine hollow glass microsphere selects a silicon dioxide/polytetrafluoroethylene composite film coated modified superfine hollow glass microsphere.
Wherein the elastic emulsion is a mixture of pure acrylic emulsion, silicone acrylic emulsion and aqueous polyurethane emulsion, and the mass ratio of the pure acrylic emulsion, the silicone acrylic emulsion and the aqueous polyurethane emulsion is 4.5:1: 2.
Wherein the cellulose is cellulose diacetate.
Wherein the cellulose is a mixture of nano cellulose crystal and cellulose nitrate, and the mass ratio of the nano cellulose crystal to the cellulose nitrate is 1: 2.8.
The defoaming agent comprises the following components in parts by mass: 14 parts of mineral oil, 2.8 parts of nonyl (octyl) phenol polyoxyethylene ether, 3.2 parts of soap salt, 14 parts of C4-C12 aliphatic hydrocarbon, 3 parts of hydrophobic silicon dioxide and 0.6 part of polyvinyl ether.
Wherein the plasticizer is dioctyl phthalate.
Wherein the leveling agent is a mixture of a phosphate modified acrylic leveling agent and organic modified polysiloxane, and the mass ratio of the phosphate modified acrylic leveling agent to the organic modified polysiloxane is 1: 2.8.
Wherein, the mildew-proof bactericide selects poly 5-chlorine-2-methyl-4-isothiazoline-3-ketone compound.
Example 5
The reflective heat-insulating coating comprises the following components in parts by mass: 30 parts of water, 20 parts of acrylic emulsion, 20 parts of surface-coated modified superfine hollow glass beads, 12 parts of rutile titanium dioxide, 12 parts of elastic emulsion, 12 parts of cellulose, 0.4 part of defoaming agent, 0.32 part of plasticizer, 4.8 parts of dodecyl alcohol ester film-forming assistant, 0.5 part of flatting agent and 0.32 part of mildew-proof bactericide.
Wherein, the surface coated modified superfine hollow glass microsphere selects a silicon dioxide/polytetrafluoroethylene composite film coated modified superfine hollow glass microsphere.
Wherein the elastic emulsion is a mixture of pure acrylic emulsion, silicone acrylic emulsion and aqueous polyurethane emulsion, and the mass ratio of the pure acrylic emulsion, the silicone acrylic emulsion and the aqueous polyurethane emulsion is 5:1: 2.
Wherein the cellulose is a mixture of nano cellulose crystal and cellulose nitrate, and the mass ratio of the nano cellulose crystal to the cellulose nitrate is 1: 3.
The defoaming agent comprises the following components in parts by mass: 15 parts of mineral oil, 3 parts of nonyl (octyl) phenol polyoxyethylene ether, 3.6 parts of soap salt, 15 parts of C4-C12 aliphatic hydrocarbon, 3.2 parts of hydrophobic silicon dioxide and 0.8 part of polyvinyl ether.
Wherein the plasticizer is diisooctyl phthalate.
Wherein the leveling agent is a mixture of a phosphate modified acrylic leveling agent and organic modified polysiloxane, and the mass ratio of the phosphate modified acrylic leveling agent to the organic modified polysiloxane is 1: 3.
Wherein, the mildew-proof bactericide selects poly 5-chlorine-2-methyl-4-isothiazoline-3-ketone compound.
The heat reflection test was performed on the heat reflection thermal insulation coatings in examples 1 to 5, and the heat reflection thermal insulation coatings prepared in examples 1 to 5 were respectively tested according to JC/T1040-2007 "Heat reflection thermal insulation coating for building exterior surface". The results of reflectivity against solar photothermal radiation are shown in Table 1.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that numerous changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. A reflective thermal insulation coating is characterized in that: the composition comprises the following components in parts by mass: 20-30 parts of water, 10-20 parts of acrylic emulsion, 16-20 parts of surface-coated modified superfine hollow glass beads, 10-12 parts of rutile titanium dioxide, 10-12 parts of elastic emulsion, 2-12 parts of cellulose, 0.2-0.4 part of defoaming agent, 0.12-0.32 part of plasticizer, 1.3-4.8 parts of dodecyl alcohol ester film-forming assistant, 0.1-0.5 part of flatting agent and 0.12-0.32 part of mildew preventive and bactericide.
2. The reflective thermal insulating coating according to claim 1, wherein: the surface-coated modified superfine hollow glass bead is one of a titanium dioxide film-coated modified superfine hollow glass bead, a silicon dioxide film-coated modified superfine hollow glass bead and a silicon dioxide/polytetrafluoroethylene composite film-coated modified superfine hollow glass bead.
3. The reflective thermal insulating coating according to claim 1, wherein: the elastic emulsion is a mixture of pure acrylic emulsion, silicone acrylic emulsion and water-based polyurethane emulsion, and the mass ratio of the pure acrylic emulsion, the silicone acrylic emulsion and the water-based polyurethane emulsion is 3-5:1: 2.
4. The reflective thermal insulating coating according to claim 1, wherein: the cellulose is selected from one or more of nano cellulose crystal, cellulose nitrate, cellulose triacetate, cellulose diacetate and cellulose acetate butyrate.
5. The reflective thermal insulating coating according to claim 4, wherein: the cellulose is a mixture of nano cellulose crystal and cellulose nitrate, and the mass ratio of the nano cellulose crystal to the cellulose nitrate is 1: 1-3.
6. The reflective thermal insulating coating according to claim 1, wherein: the defoaming agent is composed of the following components in parts by mass: 10-15 parts of mineral oil, 1-3 parts of nonyl (octyl) phenol polyoxyethylene ether, 1.2-3.6 parts of soap salt, 10-15 parts of C4-C12 aliphatic hydrocarbon, 1.2-3.2 parts of hydrophobic silicon dioxide and 0.2-0.8 part of polyvinyl ether.
7. The reflective thermal insulating coating according to claim 1, wherein: the plasticizer is selected from one of dioctyl phthalate and diisooctyl phthalate.
8. The reflective thermal insulating coating according to claim 1, wherein: the leveling agent is a mixture of a phosphate modified acrylic leveling agent and organic modified polysiloxane, and the mass ratio of the phosphate modified acrylic leveling agent to the organic modified polysiloxane is 1: 2-3.
9. The reflective thermal insulating coating according to claim 1, wherein: the mildew-proof bactericide is one of JF-90, poly 2-methyl-4-isothiazoline-3-one compounds and poly 5-chloro-2-methyl-4-isothiazoline-3-one compounds.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111234692A (en) * | 2020-01-17 | 2020-06-05 | 无锡市联合电控设备有限公司 | Sealed insulating looped netowrk cabinet |
| CN111943621A (en) * | 2020-07-31 | 2020-11-17 | 马鞍山市金韩防水保温工程有限责任公司 | Fireproof flame-retardant thermal-insulation mortar and preparation method thereof |
| CN112322101A (en) * | 2020-12-06 | 2021-02-05 | 河北驰野玻璃珠有限责任公司 | Glass bead coating and preparation method thereof |
| CN113637377A (en) * | 2021-07-28 | 2021-11-12 | 孙志远 | Building exterior wall decorative coating and preparation method thereof |
| CN115820063A (en) * | 2023-01-09 | 2023-03-21 | 南雄市星隆化工有限公司 | Water-based reflective heat-insulating coating |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740217A (en) * | 2013-12-26 | 2014-04-23 | 嘉兴北大华丰新能源有限公司 | Water-based environment-friendly reflective heat-insulating and preserving coating for metal surface |
| CN104673038A (en) * | 2015-03-17 | 2015-06-03 | 北京建筑材料科学研究总院有限公司 | Colored solar heat reflection and heat-insulation coating, as well as preparation method thereof |
| CN108795191A (en) * | 2018-05-15 | 2018-11-13 | 张子晗 | A kind of aqueous reflective heat-insulation paint |
-
2019
- 2019-09-07 CN CN201910845065.9A patent/CN110540784A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740217A (en) * | 2013-12-26 | 2014-04-23 | 嘉兴北大华丰新能源有限公司 | Water-based environment-friendly reflective heat-insulating and preserving coating for metal surface |
| CN104673038A (en) * | 2015-03-17 | 2015-06-03 | 北京建筑材料科学研究总院有限公司 | Colored solar heat reflection and heat-insulation coating, as well as preparation method thereof |
| CN108795191A (en) * | 2018-05-15 | 2018-11-13 | 张子晗 | A kind of aqueous reflective heat-insulation paint |
Non-Patent Citations (1)
| Title |
|---|
| 章小朋: "玻璃微珠表面改性及其应用的研究", 《科技创新与应用》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111234692A (en) * | 2020-01-17 | 2020-06-05 | 无锡市联合电控设备有限公司 | Sealed insulating looped netowrk cabinet |
| CN111943621A (en) * | 2020-07-31 | 2020-11-17 | 马鞍山市金韩防水保温工程有限责任公司 | Fireproof flame-retardant thermal-insulation mortar and preparation method thereof |
| CN112322101A (en) * | 2020-12-06 | 2021-02-05 | 河北驰野玻璃珠有限责任公司 | Glass bead coating and preparation method thereof |
| CN112322101B (en) * | 2020-12-06 | 2022-02-01 | 河北驰野玻璃珠有限责任公司 | Glass bead coating and preparation method thereof |
| CN113637377A (en) * | 2021-07-28 | 2021-11-12 | 孙志远 | Building exterior wall decorative coating and preparation method thereof |
| CN115820063A (en) * | 2023-01-09 | 2023-03-21 | 南雄市星隆化工有限公司 | Water-based reflective heat-insulating coating |
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Address after: No.168, Zhidong Road, Zhixi industrial concentration zone, Jintan District, Changzhou City, Jiangsu Province 213200 Applicant after: Jiangsu Jiunuo New Material Technology Co.,Ltd. Address before: No.168, Zhidong Road, Zhixi industrial concentration zone, Jintan District, Changzhou City, Jiangsu Province 213200 Applicant before: JIANGSU JIUNUO BUILDING MATERIAL TECHNOLOGY Co.,Ltd. |
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