CN104371531A - High-reflective acrylic polyurethane coating composition - Google Patents
High-reflective acrylic polyurethane coating composition Download PDFInfo
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- CN104371531A CN104371531A CN201410743240.0A CN201410743240A CN104371531A CN 104371531 A CN104371531 A CN 104371531A CN 201410743240 A CN201410743240 A CN 201410743240A CN 104371531 A CN104371531 A CN 104371531A
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
- C08G18/78—Nitrogen
- C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
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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
- 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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- 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
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Abstract
The invention relates to a high-reflective acrylic polyurethane coating composition which comprises a component A and a component B in a mass part ratio of 20;3. The component A in 100 parts by mass comprises the following materials in part by mass: 30-50 parts of modified hydroxyl acrylic resin, 2-6 parts of auxiliaries, 35-45 parts of heat reflective pigments, 4-8 parts of aerogel and 10-15 parts of organic solvent. The component B in 100 parts by mass comprises the following materials in part by mass: 75-90 parts of polyisocyanate and 10-25 parts of organic solvent. The modified hydroxyl acrylic resin is obtained by cold-blending modified resin and hydroxyl acrylic resin in a mass part ratio of 1-3: 1; the solid content of the modified hydroxyl acrylic resin is greater than or equals to 75wt%; the particle size of heat reflective pigments ranges from 0.55 micron to 1.2 microns; the particle size of the aerogel ranges from 1 micron to 80 microns; the pore size of the aerogel ranges from 10 nanometers to 20 nanometers; and the heat conductivity coefficient of the aerogel is less than or equals to 0.015W/(m k). The polyisocyanate is one or more of HDI (hexamethylene diisocyanate) biuret, HDI trimer and IPDI (isophorone diisocyanate) trimer curing agents. The high-reflective acrylic polyurethane coating composition is high in reflective insulation quality; and the quantity of VOC (volatile organic compounds) of the high-reflective acrylic polyurethane coating component is low.
Description
Technical field
The present invention relates to a kind of high-reflectivity acroleic acid polyurethane coating composition.
Background technology
Sun power is the necessary requirement of human survival and life, but strong radiation brings problems and inconvenience also to industrial production and daily life.Along with the arrival of conservation-minded society and increasing the weight of of global greenhouse effect, the material with reflection solar heat ability and passive radiation refrigeration receives the concern of people day by day.Especially at the outside surface of the tank bodies such as chemical industry storage tank and natural gas liquids (LNG) storage tank and equipment; if there is no the protection of heat-reflecting heat-insulating material; not only can cause the loss of the energy, and likely can cause the security incidents such as serious fire, blast.In heat-reflecting heat-insulating material, solar heat reflection paint is a kind of energy-saving material of simple and easy to do, successful, has become the focus of people's research and development.Current solar heat reflection paint is all generally by improving reflectivity to the selection of color stuffing and compatibility, reaching effect of heat insulation.Reflectivity height is the key of the selection of color stuffing.Secondly, the selection principle of resin is that the transparency of requirement resin is high, and transmittance is more than 80%, and the specific absorption of sun power is low, makes in resin less containing heat absorption groups such as C-O-C, C=O, O-H as far as possible.Chinese patent CN101205435A and CN 1583908A individually discloses a kind of solar heat reflecting and heat insulating coating and preparation method thereof, the object that finishing coat thermoplasticity heat reflection coatings reaches heat insulating reflecting is added with undercoat chlorosulfonated polyethylene thermal insulation layer, but the resin selected by it is all thermoplastic resin, outdoor loss of properties on aging itself, resin solid content are low, cause the VOC discharge of whole matching system large.Chinese patent CN 1800283 discloses a kind of thermal insulating coating and uses thereof, it uses nanoporous SiO
2coloured heat insulating reflecting coating is prepared with nano iron oxide yellow, heat reflectivity is high, good heat insulating, the resin used is the conventional system such as polyester polyurethane resin, acrylated polyurethane resin, although these resin system outdoor agings comparatively thermoplastic resin are good, but it is general not high that its shortcoming is solids content, introduce a lot of VOC and what use is all nano dye, particle diameter is less, large to the light wave reflection of visible region, then can weaken near-infrared region reflection, heat reflection effect is corresponding has reduction.
Summary of the invention
The object of the invention is: provide a kind of high-reflectivity acroleic acid polyurethane coating composition, can be coated on the outside surface of LNG storage tank and other chemical industry storage tanks, provide excellent reflective insulation effect and decorative effect, VOC release is little, environmental protection and energy saving.
The technical scheme realizing the object of the invention is: a kind of high-reflectivity acroleic acid polyurethane coating composition, is characterized in that, be made up of component A and B component, and component A is 20:3 with the mass parts ratio of B component;
In the component A of 100 mass parts, modified hydroxyl acrylic resin 30 ~ 50 parts, auxiliary agent 2 ~ 6 parts, heat reflection pigment 35 ~ 45 parts, aerogel 4 ~ 8 parts, organic solvent 10 ~ 15 parts, its resin-pigment ratio >=1.5; In 100 mass parts B component, polyisocyanates 75 ~ 90 parts, organic solvent 10 ~ 25 parts;
It is more obtained than being that 1 ~ 3:1 carries out cold spelling by mass parts with Hydroxylated acrylic resin that described modified hydroxyl acrylic resin is modified resin, solids content >=the 75wt% of gained modified hydroxyl acrylic resin, wherein, modified resin is one or more in CTR 6275, the CTR 6287 of CNOOC Changzhou EP Coating Co., Ltd., and they are several obtained as polymerization single polymerization monomer using in function monomer isobornyl acrylate, isobornyl methacrylate, cyclohexyl acrylate, tertiary ethylene carbonate, tertiary carbonic acid glycidyl ester; Hydroxylated acrylic resin is the 878N of S1196 or the Arkema company of Nuplex company;
Described heat reflection pigment is rutile TiO
2aLTIRIS 800, rutile TiO
2one or more in ALTIRIS 550, nickel titanium yellow PY-53, titanium chrome yellow PBN-24, iron oxide red PR-101, the particle size range of above-mentioned pigment is 0.55 ~ 1.2 μm;
Described aerogel is silica aerogel, and it is a kind of porous silica, its particle diameter 1 ~ 80 μm, aperture 10 ~ 20nm, thermal conductivity≤0.015W/ (mk);
Described polyisocyanates is one or more in HDI biuret, HDI tripolymer, IPDI trimer curing agent.
In the component A of above-mentioned high-reflectivity acroleic acid polyurethane coating composition, described Hydroxylated acrylic resin weight-average molecular weight is 4000 ~ 5000, solids content is 55 ~ 60wt%, and hydroxy radical content is 2.3 ~ 2.6wt%, and the viscosity that rotational viscosimeter records is 2400 ~ 3800mPas; Described modified resin weight-average molecular weight is 2000 ~ 2500, and solids content is >=80wt%, and hydroxy radical content is 3.8 ~ 4.2wt%, the viscosity that rotational viscosimeter records is 2500 ~ 3600mPas.
Volume solids content >=75% of above-mentioned high-reflectivity acroleic acid polyurethane coating composition, VOC release≤250g/L, heat reflectivity >=0.9.
In the component A of above-mentioned high-reflectivity acroleic acid polyurethane coating composition, described aerogel is one or more in the product SF of the product SJ 1800 of China factor high-tech company, the product SQ2 of Chinese dust Lik-Sang company, Chinese nano high-tech company.
In the component A of above-mentioned high-reflectivity acroleic acid polyurethane coating composition, described auxiliary agent is one or more in wetting dispersing agent, defoamer, flow agent, amine siccative, anti-settling agent, anti-sag agent.
In above-mentioned high-reflectivity acroleic acid polyurethane coating composition, described organic solvent is one or more in dimethylbenzene, N-BUTYL ACETATE, vinyl acetic monomer, ethylene glycol ether acetate, 1-Methoxy-2-propyl acetate, pimelinketone, butanone, methyl iso-butyl ketone (MIBK), No. 100, aromatic solvent, No. 150, aromatic solvent, No. 200, aromatic solvent.
Technique effect of the present invention is: the high-reflectivity acroleic acid polyurethane coating composition of technical solution of the present invention compares with existing similar coating, has following remarkable technique effect:
1. in component A, adopt that in common Hydroxylated acrylic resin, to introduce the modified hydroxyl acrylic resin solids content that modified resin makes to obtain high, VOC release is little, and weathering resistance, ageing resistance are excellent.Because the modified resin introduced is several obtained as polymerization single polymerization monomer using in function monomer isobornyl acrylate, isobornyl methacrylate, cyclohexyl acrylate, tertiary ethylene carbonate, tertiary carbonic acid glycidyl ester.With such modified hydroxyl acrylic resin as base-material, can not only improve the solids content of coating composition entirety, and can improve ageing-resistant, the anti-yellowing property of coating polymer, coating has very high decorative function.When tank wall application, coating thickness just can significantly improve the heat-reflecting heat-insulating effect of whole coating and can provide decoration protected effect for a long time for 30 ~ 80 μm;
2., in component A, have employed rutile TiO
2aLTIRIS 800, rutile TiO
2aLTIRIS 550, one or more in nickel titanium yellow PY-53, titanium chrome yellow PBN-24, iron oxide red PR-101 are as heat reflection pigment and particle size range is 0.55 ~ 1.2 μm, with the normally used pigment of prior art as compared with the pigment such as common rutile type, common iron oxide red, common iron oxide yellow, high to the light reflectance of infrared spectral region and wavelength > 0.76 μm, the heat reflection Be very effective of coating can be made to improve;
3. in component A, adopt aerogel it be a kind of porous silica, particle diameter 1 ~ 80 μm, aperture 10 ~ 20 nanometer, the product of thermal conductivity≤0.015W/ (mk) (25 DEG C), because this aerogel quality is light, particle diameter is little, thermal conductivity is low, can hole effectively between particle filled composite with it, reduce paint film voidage, reduce the black body absorption effect in space as far as possible, thus effectively improving emittance and the reflectivity of coating, coating is had, and density is little, volume contains the feature high, heat insulation and preservation effect is good admittedly;
4. in B component, polyisocyanate resin is one or more in HDI biuret, HDI tripolymer, IPDI tripolymer, these polymeric functionality are all more than three, and relative molecular mass is little, has crosslinking activity high, drying is very fast, hardness of paint film is higher, solid divides higher, and viscosity is lower, high solid coating composition can be prepared and VOC release low, be the heat-reflecting insulating coating of a kind of environmental protection, energy-conservation, high-decoration, meet present green energy conservation environmental requirement.
Embodiment
Below in conjunction with embodiment, the present invention is described further, but is not limited to this.
Embodiment and comparative example raw materials are unless otherwise indicated commercially available industrial goods, buy by commercial channel, wherein:
In auxiliary agent, dispersant B YK 163 is German BYK Products; Infusion DF-22 is Canadian EDL Products; Anti-sag agent PLUS is this Products of U.S.'s hamming; Flow agent EFKA 3777 is Dutch EFKA auxiliary agent Products;
In heat reflection pigment, rutile TiO
2aLTIRIS 550 and rutile TiO
2aLTIRIS800 is Huntsman Corporation of U.S. product; Nickel titanium yellow PY-53 is that pigment Products is strangled by Chinese section; The particle size range of above-mentioned pigment is 0.55 ~ 1.2 μm;
Polyisocyanates HDI tripolymer N-3390 is Bayer A.G's product;
Embodiment 1 prepare modified hydroxyl acrylic resin
1. fill a prescription
In the modified hydroxyl acrylic resin of every 100 mass parts, 25 mass parts Hydroxylated acrylic resin S1196,75 mass parts modified resin CTR 6275, wherein: Hydroxylated acrylic resin S1196 is the product of Nuplex (China) company, its weight-average molecular weight is 4000 ~ 5000, solids content is 55 ~ 60wt%, and hydroxy radical content is 2.3 ~ 2.6wt%, and the viscosity that rotational viscosimeter records is 2400 ~ 3800mPas; Modified resin CTR 6275 is CNOOC Changzhou EP Coating Co., Ltd.'s product, they obtain using function monomer isobornyl methacrylate, cyclohexyl acrylate, tertiary carbonic acid glycidyl ester as comonomer, its weight-average molecular weight is 2000 ~ 2500, solids content is >=80wt%, hydroxy radical content is 4.0 ~ 4.2wt%, and the viscosity that rotational viscosimeter records is 2500 ~ 3000mPas.
2. preparation method
In dispersion tank, Hydroxylated acrylic resin and modified resin stirred, filter, pack, be modified hydroxyl acrylic resin, its solids content is 75wt%, saves backup.
Embodiment 2 prepares component A 1 (white, resin-pigment ratio 1.5)
1. fill a prescription
In the component A of every 100 mass parts, the obtained modified hydroxyl acrylic resin of 40 parts of embodiments 1,39 parts of heat reflection pigment (comprise 26 parts of rutile TiO
2aLTIRIS 550 and 13 parts of rutile TiO
2aLTIRIS 800), 6 parts of aerogel SJ, 1800,3 parts of auxiliary agents (comprising 1 part of dispersant B YK, 163,0.5 part of defoamer DF-220.5 part anti-sag agent PLUS and 1 part of flow agent EFKA 3777), 12 parts of organic solvents (comprising 6 parts of dimethylbenzene and 6 parts of N-BUTYL ACETATEs).
2. preparation method
In dispersion tank, add modified hydroxyl acrylic resin, organic solvent, dispersion agent, defoamer, add anti-sag agent PLUS after stirring, high-speed stirring 15min, anti-sag agent PLUS is fully soaked and dispersion, then add heat reflection pigment, aerogel, after stirring, move in sand mill, discharging when being 25 μm through grinding distribution to the fineness of slurry, stir, filter, pack, obtained component A 1, saves backup.
Embodiment 3 prepares component A 2 (light yellow, resin-pigment ratio 1.5)
1. fill a prescription
In the component A of every 100 mass parts, the obtained modified hydroxyl acrylic resin of 40 parts of embodiments 1,39 parts of heat reflection pigment (comprise 26 parts of rutile TiO
2aLTIRIS 550,13 parts of nickel titanium yellow PY-53), 6 parts of aerogel SJ, 1800,3 parts of auxiliary agents (comprising 1 part of dispersant B YK, 163,0.5 part of defoamer DF-22,0.5 part of anti-sag agent PLUS, 1 part of flow agent EFKA 3777), 12 parts of organic solvents (comprising 6 parts of dimethylbenzene and 6 parts of N-BUTYL ACETATEs).
2. preparation method
In dispersion tank, add modified hydroxyl acrylic resin, organic solvent, dispersion agent, defoamer, add anti-sag agent PLUS after stirring, high-speed stirring 15min, anti-sag agent PLUS is fully soaked and dispersion, then add heat reflection pigment, aerogel, after stirring, move in sand mill, discharging when being 25 μm through grinding distribution to the fineness of slurry, stir, filter, pack, obtained component A 2, saves backup.
Embodiment 4 prepares B component
1. fill a prescription
In the B component of every 100 mass parts, 88 parts of HDI tripolymer N-3390,12 parts of organic solvents (comprising 5 parts of dimethylbenzene, 5 parts of ammonia ester level N-BUTYL ACETATEs, 2 parts of 1-Methoxy-2-propyl acetates).
2. preparation method
Added by organic solvent in dispersion tank, add HDI tripolymer N-3390, stir under stirring, filter, packaging, obtains B component, saves backup.
Embodiment 5 prepares high-reflectivity acroleic acid polyurethane coating composition 1
During use, first component A 1 obtained for embodiment 2 and embodiment 4 are obtained after B component stirs respectively, take component A and B component by mass parts respectively than for 20:3, remix also stirs, and obtains high-reflectivity acroleic acid polyurethane coating composition 1.
Embodiment 6 prepares high-reflectivity acroleic acid polyurethane coating composition 2
During use, first component A 2 obtained for embodiment 3 and embodiment 4 are obtained after B component stirs respectively, take component A and B component by mass parts respectively than for 20:3, remix also stirs, and is high-reflectivity acroleic acid polyurethane coating composition 2.
Comparative example 1 prepares comparative example acroleic acid polyurethane coating I
1. comparative example 1A component is prepared
Component A 1 prepared by formula and embodiment 2 is substantially identical, and difference is, the modified hydroxyl acrylic resin replacing embodiment 1 obtained with 40 parts of Hydroxylated acrylic resin S1196 (solids content 60wt%); The method preparing component A by embodiment 2 obtains comparative example 1A component, saves backup;
2. comparative example 1 acroleic acid polyurethane coating I is prepared
The B component that comparative example 1A component step 1. obtained and embodiment 4 obtain stirs respectively, and take comparative example 1A component and B component by mass parts respectively than for 20:3, remix also, after stirring, obtains comparative example 1 acroleic acid polyurethane coating I.
Comparative example 2 prepares comparative example acroleic acid polyurethane coating II
1. comparative example 2A component is prepared
Fill a prescription substantially identical with the formula of comparative example 1A component, difference is: replace heat reflection pigment with 39 parts of rutile type R-902, replaces aerogel with 6 parts of glass microballons; The method preparing component A by embodiment 2 obtains comparative example 2A component, saves backup;
2. comparative example 2 acroleic acid polyurethane coating II is prepared
The B component that comparative example 2A component step 1. obtained and embodiment 4 obtain stirs respectively, and take comparative example 2A component and B component by mass parts respectively than for 20:3, remix also, after stirring, obtains comparative example 2 acroleic acid polyurethane coating II.
detect coating property
(1) performance of coating own is detected
1. detection method
Outward appearance, range estimation;
Volume solids content is pressed GB/T 9272-2007 and is measured;
VOC content is pressed GB/T 23985-2009 and is measured;
Snappiness is pressed GB/T 1731-1993 and is measured, and test plate (panel) is tinplate, coating thickness 20 ± 3 μm;
Shock test presses GB/T 1732-1993, and test plate (panel) is tinplate, thickness 20 ± 3 μm;
Pull open method adhesion test by GB/T 5210-2006, test plate (panel) is sandblasting steel plate, thickness 320 ± 20 μm.
2. detected result is in table 1.
Table 1
As shown in Table 1, high-reflectivity acroleic acid polyurethane coating composition of the present invention (embodiment 6 and embodiment 6 are made), the modified hydroxyl acrylic resin in technical scheme is employed due to component A, and with the addition of heat reflection pigment and aerogel, resin-pigment ratio >=1.5, coordinate with component A as B component with HDI tripolymer N-3390, make coating composition of the present invention and current acroleic acid polyurethane coating (comparative example 1, comparative example 2 is made) compare, there is higher volume solids content, lower VOC release, higher gloss, also has good mechanical property simultaneously.
(2) matching property of coating and coating system is detected
High-reflectivity acroleic acid polyurethane coating composition of the present invention can be used as the coating of bottom surface unification, also can with comprise the protective system matching operations such as epoxy primer, acrylic primer, epoxy zinc rich primer, epoxy micaceous iron paint, inorganic zinc silicate primer, composition very-high performance protection against corrosion, ageing-resistant heat insulating reflecting coating system.
What enumerate below is that coating composition of the present invention detects data as the heat insulating reflecting finish paint of chemical industry tank use in marine corrosion environment and the supporting coating of protection against corrosion priming paint:
1. sample making
For detecting embodiment 5 and 6, the test plate (panel) of the matching performance of comparative example 1 and 2 paint coatings system is the thick sandblasting steel plate of 3 ~ 5mm;
With MC-EP-1 epoxy zinc rich primer for priming paint, MC-EI-1 epoxy micaceous iron paint is intermediate coat, the coating that embodiment 5, embodiment 6 or comparative example 1, comparative example 2 obtain is that finish paint forms coating system, first spray-applied primer (dry film thickness 60 μm), then intermediate coat (dry film thickness 150 μm) and finish paint (dry film thickness 40 μm) is sprayed successively, the build of coating system 250 ± 20 μm.
2. detection method
Salt fog resistance test is undertaken by GB/T 1763;
Resistance to artificial weathering test is undertaken by the appendix A of ISO 20340-2009;
Solar reflectance is pressed GB/T 25261-2010 and is tested;
Hemispherical emissivity is pressed GB/T 2680-1994 and is tested;
Thermal conductivity is pressed GJB 1201.1-91 and is tested;
3. detected result is in table 2.
Table 2
From above-mentioned detected result: compare with existing acroleic acid polyurethane coating (comparative example 1 and 2), the high-reflectivity acroleic acid polyurethane coating composition of the embodiment of the present invention 5 and 6 is as the finish paint in supporting coating system, and making this coating system have excellent sticking power and erosion resistance and artificial weathering ageing resistance can; Especially there is excellent Solar reflectance, effectively can reflect solar heat, play the function of heat insulating reflecting and also have lower thermal conductivity, more excellent heat insulating effect can be played.Above-mentioned advantage proves that this coating may be used for the outer wall provide protection of LNG storage tank or various chemical industry storage tank completely; energy reflecting sun heat radiation; excellent reflective insulation effect and decorative effect are provided, effectively keep qualified Daily boil-off-rate, not only environmental protection and energy saving but also improve security.
Claims (6)
1. a high-reflectivity acroleic acid polyurethane coating composition, is characterized in that, is made up of component A and B component, and component A is 20:3 with the mass parts ratio of B component;
In the component A of 100 mass parts, modified hydroxyl acrylic resin 30 ~ 50 parts, auxiliary agent 2 ~ 6 parts, heat reflection pigment 35 ~ 45 parts, aerogel 4 ~ 8 parts, organic solvent 10 ~ 15 parts, its resin-pigment ratio >=1.5; In 100 mass parts B component, polyisocyanates 75 ~ 90 parts, organic solvent 10 ~ 25 parts;
It is more obtained than being that 1 ~ 3:1 carries out cold spelling by mass parts with Hydroxylated acrylic resin that described modified hydroxyl acrylic resin is modified resin, solids content >=the 75wt% of gained modified hydroxyl acrylic resin, wherein, modified resin is one or more in CTR 6275, the CTR 6287 of CNOOC Changzhou EP Coating Co., Ltd., and they are several obtained as polymerization single polymerization monomer using in function monomer isobornyl acrylate, isobornyl methacrylate, cyclohexyl acrylate, tertiary ethylene carbonate, tertiary carbonic acid glycidyl ester; Hydroxylated acrylic resin is the 878N of S1196 or the Arkema company of Nuplex company;
Described heat reflection pigment is rutile TiO
2aLTIRIS 800, rutile TiO
2one or more in ALTIRIS 550, nickel titanium yellow PY-53, titanium chrome yellow PBN-24, iron oxide red PR-101, the particle size range of above-mentioned pigment is 0.55 ~ 1.2 μm;
Described aerogel is silica aerogel, and it is a kind of porous silica, its particle diameter 1 ~ 80 μm, aperture 10 ~ 20nm, thermal conductivity≤0.015W/ (mk);
Described polyisocyanates is one or more in HDI biuret, HDI tripolymer, IPDI trimer curing agent.
2. high-reflectivity acroleic acid polyurethane coating composition according to claim 1, it is characterized in that, in component A, described Hydroxylated acrylic resin weight-average molecular weight is 4000 ~ 5000, solids content is 55 ~ 60wt%, hydroxy radical content is 2.3 ~ 2.6wt%, and the viscosity that rotational viscosimeter records is 2400 ~ 3800mPas; Described modified resin weight-average molecular weight is 2000 ~ 2500, and solids content is >=80wt%, and hydroxy radical content is 3.8 ~ 4.2wt%, and the viscosity that rotational viscosimeter records is 2500 ~ 3600mPas.
3. high-reflectivity acroleic acid polyurethane coating composition according to claim 1, is characterized in that, volume solids content >=75% of coating composition, VOC release≤250g/L, heat reflectivity >=0.9.
4. high-reflectivity acroleic acid polyurethane coating composition according to claim 1, it is characterized in that, in component A, described aerogel is one or more in the product SF of the product SJ 1800 of China factor high-tech company, the product SQ2 of Chinese dust Lik-Sang company, Chinese nano high-tech company.
5. high-reflectivity acroleic acid polyurethane coating composition according to claim 1, is characterized in that, in component A, described auxiliary agent is one or more in wetting dispersing agent, defoamer, flow agent, amine siccative, anti-settling agent, anti-sag agent.
6. high-reflectivity acroleic acid polyurethane coating composition according to claim 1, it is characterized in that, described organic solvent is one or more in dimethylbenzene, N-BUTYL ACETATE, vinyl acetic monomer, ethylene glycol ether acetate, 1-Methoxy-2-propyl acetate, pimelinketone, butanone, methyl iso-butyl ketone (MIBK), No. 100, aromatic solvent, No. 150, aromatic solvent, No. 200, aromatic solvent.
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| CN201410743240.0A CN104371531B (en) | 2014-12-08 | 2014-12-08 | High-reflective acrylic polyurethane coating composition |
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| CN201410743240.0A CN104371531B (en) | 2014-12-08 | 2014-12-08 | High-reflective acrylic polyurethane coating composition |
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| CN104371531A true CN104371531A (en) | 2015-02-25 |
| CN104371531B CN104371531B (en) | 2017-01-25 |
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| CN105238247A (en) * | 2015-10-21 | 2016-01-13 | 中国船舶重工集团公司第七二五研究所 | Preparation method of waterborne polyurethane reflective insulation coating |
| CN105419599A (en) * | 2015-12-03 | 2016-03-23 | 陕西宝塔山油漆股份有限公司 | High-solid-content aliphatic acrylic polyurethane paint and preparation method thereof |
| CN106543840A (en) * | 2016-11-04 | 2017-03-29 | 广东海顺新材料科技有限公司 | Water based acrylic resin and water soluble acrylic acid amino-stoving varnish and preparation method and metal works beneficial to deep processing |
| CN109054609A (en) * | 2018-06-15 | 2018-12-21 | 苏州益可泰电子材料有限公司 | Composite material and preparation method |
| CN109401476A (en) * | 2018-11-04 | 2019-03-01 | 广西南宁维防腐科技有限公司 | A kind of oil tank reflective heat-insulation paint and preparation method thereof |
| CN109401475A (en) * | 2018-11-04 | 2019-03-01 | 广西南宁维防腐科技有限公司 | A kind of oil tank outer wall heat insulating and corrosion two-component coating and preparation method thereof |
| CN109762455A (en) * | 2019-02-01 | 2019-05-17 | 赵娜 | Aqueous weather-proof anticorrosive paint of one kind and preparation method thereof |
| CN111036524A (en) * | 2019-11-27 | 2020-04-21 | 中国石油天然气股份有限公司 | Composite coating suitable for underground oil pipe and coating method thereof |
| CN113480929A (en) * | 2021-07-27 | 2021-10-08 | 河北三棵树涂料有限公司 | Primer-topcoat polyurethane coating and preparation method thereof |
| CN113717603A (en) * | 2021-10-11 | 2021-11-30 | 广西民族大学 | Modified fluorocarbon anticorrosive paint and preparation method thereof |
| CN113913086A (en) * | 2021-11-10 | 2022-01-11 | 金华联创塑粉科技有限公司 | High-reflectivity coating and preparation method and application thereof |
| CN114836099A (en) * | 2022-04-29 | 2022-08-02 | 江苏金陵特种涂料有限公司 | Super-weather-resistant heat-insulating reflective coating and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238247A (en) * | 2015-10-21 | 2016-01-13 | 中国船舶重工集团公司第七二五研究所 | Preparation method of waterborne polyurethane reflective insulation coating |
| CN105419599A (en) * | 2015-12-03 | 2016-03-23 | 陕西宝塔山油漆股份有限公司 | High-solid-content aliphatic acrylic polyurethane paint and preparation method thereof |
| CN106543840A (en) * | 2016-11-04 | 2017-03-29 | 广东海顺新材料科技有限公司 | Water based acrylic resin and water soluble acrylic acid amino-stoving varnish and preparation method and metal works beneficial to deep processing |
| CN106543840B (en) * | 2016-11-04 | 2018-01-02 | 广东海顺新材料科技有限公司 | Water based acrylic resin and water soluble acrylic acid amino-stoving varnish and preparation method and metal works beneficial to deep processing |
| CN109054609A (en) * | 2018-06-15 | 2018-12-21 | 苏州益可泰电子材料有限公司 | Composite material and preparation method |
| CN109401475A (en) * | 2018-11-04 | 2019-03-01 | 广西南宁维防腐科技有限公司 | A kind of oil tank outer wall heat insulating and corrosion two-component coating and preparation method thereof |
| CN109401476A (en) * | 2018-11-04 | 2019-03-01 | 广西南宁维防腐科技有限公司 | A kind of oil tank reflective heat-insulation paint and preparation method thereof |
| CN109762455A (en) * | 2019-02-01 | 2019-05-17 | 赵娜 | Aqueous weather-proof anticorrosive paint of one kind and preparation method thereof |
| CN111036524A (en) * | 2019-11-27 | 2020-04-21 | 中国石油天然气股份有限公司 | Composite coating suitable for underground oil pipe and coating method thereof |
| CN113480929A (en) * | 2021-07-27 | 2021-10-08 | 河北三棵树涂料有限公司 | Primer-topcoat polyurethane coating and preparation method thereof |
| CN113717603A (en) * | 2021-10-11 | 2021-11-30 | 广西民族大学 | Modified fluorocarbon anticorrosive paint and preparation method thereof |
| CN113717603B (en) * | 2021-10-11 | 2022-07-12 | 广西民族大学 | Modified fluorocarbon anticorrosive paint and preparation method thereof |
| CN113913086A (en) * | 2021-11-10 | 2022-01-11 | 金华联创塑粉科技有限公司 | High-reflectivity coating and preparation method and application thereof |
| CN114836099A (en) * | 2022-04-29 | 2022-08-02 | 江苏金陵特种涂料有限公司 | Super-weather-resistant heat-insulating reflective coating and preparation method thereof |
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