CN102864883A - Heat insulating coat system for building wall - Google Patents
Heat insulating coat system for building wall Download PDFInfo
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- CN102864883A CN102864883A CN201110194564XA CN201110194564A CN102864883A CN 102864883 A CN102864883 A CN 102864883A CN 201110194564X A CN201110194564X A CN 201110194564XA CN 201110194564 A CN201110194564 A CN 201110194564A CN 102864883 A CN102864883 A CN 102864883A
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- coating composition
- based emulsion
- water based
- construction wall
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- 239000008199 coating composition Substances 0.000 claims abstract description 181
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 151
- 239000000945 filler Substances 0.000 claims abstract description 69
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 35
- 238000002310 reflectometry Methods 0.000 claims abstract description 24
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- 238000000576 coating method Methods 0.000 claims description 83
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- 238000010276 construction Methods 0.000 claims description 71
- 239000000919 ceramic Substances 0.000 claims description 46
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- 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 4
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
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- 239000010936 titanium Substances 0.000 description 3
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- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 3
- 239000004970 Chain extender Substances 0.000 description 2
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical group O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 2
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- WMGSQTMJHBYJMQ-UHFFFAOYSA-N aluminum;magnesium;silicate Chemical compound [Mg+2].[Al+3].[O-][Si]([O-])([O-])[O-] WMGSQTMJHBYJMQ-UHFFFAOYSA-N 0.000 description 2
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- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 description 1
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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Images
Abstract
The invention relates to a heat insulating coat system for a building wall. The heat insulating coat system comprises: (a) a hydrophobic base coat formed by a first coating composition, wherein the first coating composition comprises a water-based latex and the water permeability rate of the base coat is at most 0.5ml per 24 hours; and (b) a heat-reflective finishing coat formed by a second coating composition, wherein the second coating composition comprises a heat-reflective filler, and the sun reflectivity of the finishing coat is at least 83%, and/or the semispherical emission ratio of the finishing coat is at least 85%.
Description
Technical field
The present invention relates to a kind of construction wall heat insulating coat system, more specifically, relate to a kind of heat insulating coat system that can reduce the thermal transmittance of construction wall and/or improve the simulation energy-saving efficiency of construction wall.
Background technology
At present, growing along with economy, energy consumption problem more and more receives people's concern.As the rich and influential family of energy consumption, building energy consumption accounts for about 30% to 40% of national energy consumption every year.Therefore, how to reduce building energy consumption and become the most urgent in all kinds of energy-conservation researchs, problem demanding prompt solution.
Building energy conservation is mainly reflected in two aspects: insulation and heat insulation, the both Adopts measure in order to have suitable temperature in the holding chamber.Insulation refers generally to enclosed structure and stops in the winter time indoorly to outdoor heat transfer, and makes the suitable temperature of indoor maintenance; And the heat insulation enclosed structure that is often referred to is isolated the impact of solar radiant heat and outdoor high temperature in summer, makes its inner surface keep proper temperature.In the thermal isolation material, heat insulating coat or coating system more and more are subject to people's favor because of advantages such as easy to use, good heat-insulation effect and economically feasibles.
Summary of the invention
The inventor has considered, according to heat insulation mechanism and heat insulation mode, thermal isolation coating or coating system can be divided into isolation-type heat insulating coat or coating system, reflection type thermal insulation coating or coating system and radiation type heat-insulation coating or coating system, thereby have designed the synergistic coating system with good effect of heat insulation of a kind of two or more heat insulation mechanism.
Particularly, the invention provides a kind of heat insulating coat system, it comprises:
(a) the hydrophobicity scratch coat that is formed by the first coating composition, wherein said the first coating composition comprises water based emulsion, and the permeability rate of described scratch coat is 0.5mL/24 hour at the most; With
(b) the heat reflectivity finishing coat that is formed by the second coating composition, wherein said the second coating composition comprises the heat reflection filler, and the sun reflectivity of described finishing coat is at least 83%, and/or the hemisphere transmitting ratio is at least 85%.
The present invention also provides a kind of method that is coated with construction wall, and described method comprises: construction wall of the present invention is applied on the described construction wall with the heat insulating coat system, thereby obtains being coated with the construction wall of described heat insulating coat system.In the specific embodiment, described construction wall comprises following constructional materials, and described constructional materials comprises concrete block, gypsum plank, sandlime brick, gas concrete, composite light-weight scutum, cement fibrolite plate and any combination thereof.
The inventor surprisingly finds, after the coating system that will comprise hydrophobicity scratch coat and heat reflectivity finishing coat is coated at least one side of construction wall, these two coatings have produced collaborative energy-conserving action, wherein the hydrophobicity scratch coat can reduce the infiltration of outside moisture in the body of wall, simultaneously can improve the outside diffusion of body of wall steam, and heat reflectivity finishing coat reflected sunlight energy effectively.Thereby at least one side is coated with the construction wall of this coating system and compares with the construction wall of uncoated described coating system, and thermal transmittance has descended at least 10%.In addition or or, at least one side, preferably at least the outside, the construction wall that is coated with this coating system is compared with the construction wall of uncoated described coating system, under the meteorological condition in Guangzhou, has at least 20%/annual simulation energy-saving efficiency, perhaps under the meteorological condition in Shanghai, have at least 15%/annual simulation energy-saving efficiency, perhaps under Pekinese's meteorological condition, have at least 6%/annual simulation energy-saving efficiency.Preferably, both sides are coated with the construction wall of coating system of the present invention, and uncoated construction wall is compared, and above-mentioned simulation energy-saving efficiency even can be higher for example has under the meteorological condition in Guangzhou up to 26%/annual simulation energy-saving efficiency.The inventor also surprisingly finds, building energy consumption mainly take summer energy consumption for cooling as main area (for example Guangzhou), when coating system of the present invention is coated on the construction wall, the gained construction wall is compared the simulation energy-saving efficiency with uncoated construction wall more remarkable.
Description of drawings
Fig. 1 is the schematic diagram of simulant building space enclosing structure.
Fig. 2 is the equal particle diameter test result of the z of pure acrylate water-based emulsion 2133.
Fig. 3 is the equal particle diameter test result of the z of cinnamic acrylic ester water-based emulsion RS968.
The specific embodiment
Unless this paper has statement in addition, describe the term " " that uses in the context of the present invention or " a kind of " and be appreciated that and comprise plural number.
Be described to comprise or comprise in the situation of specific components at composition, do not get rid of said composition and comprise other selectable components, unless and indicate in addition clearly, estimate that said composition also can be made of related specific components or form, perhaps be described to comprise or comprise in the situation of specific process step in method, do not get rid of the optional processing step that the method comprises other, unless and indicate in addition clearly, estimate that the method also can be made of related specific process step or form.
For easy, this paper only discloses some number ranges clearly.Yet lower limit can be combined to form not the clearly scope of record with any upper limit arbitrarily; And lower limit can be combined to form not the clearly scope of record with other lower limit arbitrarily, and the same arbitrarily upper limit can be combined to form not the clearly scope of record with any other upper limit.In addition, although not clearly record, each point or single numerical value between endpoints of ranges are included in this scope.Thereby each point or single numerical value can be used as lower limit or the upper limit and arbitrarily other point or the single combinations of values or be combined to form not the clearly scope of record with other lower limit or the upper limit of self.
The invention provides a kind of construction wall heat insulating coat system, it comprises:
(a) the hydrophobicity scratch coat that is formed by the first coating composition, wherein said the first coating composition comprises water based emulsion, and the permeability rate of described scratch coat is 0.5mL/24 hour at the most; With
(b) the heat reflectivity finishing coat that is formed by the second coating composition, wherein said the second coating composition comprises the heat reflection filler, and the sun reflectivity of described finishing coat is at least 83%, and/or the hemisphere transmitting ratio is at least 85%.
Of the present invention preferred embodiment in, the permeability rate of described scratch coat is less than or equal to 0.3mL/24 hour.Preferably, described scratch coat also has the Static Water contact angle greater than 100 degree, preferably greater than or equal to the Static Water contact angle of 120 degree.
Of the present invention another preferred embodiment in, the sun reflectivity of described finishing coat is at least 84%, and/or the hemisphere transmitting ratio is at least 87%.
In another preferred embodiment of the present invention, at least one side is coated with the thermal transmittance of the construction wall of coating system of the present invention, compares with the thermal transmittance of the construction wall of uncoated coating system of the present invention, has descended at least 10%.
In another preferred embodiment of the present invention, at least one side, preferably at least the outside, be coated with the construction wall of coating system of the present invention, compare with the construction wall of uncoated coating system of the present invention, under the meteorological condition in Guangzhou, have at least 20%/annual simulation energy-saving efficiency, perhaps under the meteorological condition in Shanghai, have at least 15%/annual simulation energy-saving efficiency, perhaps under Pekinese's meteorological condition, have at least 6%/annual simulation energy-saving efficiency.
The term " permeability rate " that uses in this article is to weigh the two measure of coating hydrophobicity and porosity.Particularly, permeability rate refers to that under ambient conditions, for example under room temperature (25 ℃), the atmospheric pressure, in the special time period, for example in 24 hours, infiltration is by the water yield of coating.Generally speaking, construction wall is less than or equal to 0.5mL/24 hour with the permeability rate of coating.In the present invention, the permeability rate of hydrophobicity scratch coat can be less than or equal to 0.3mL/24 hour.
Term used herein " Static Water contact angle " is to weigh measuring of coating hydrophilic (or hydrophobicity).Generally speaking, hydrophobic coating is characterised in that the Static Water contact angle is 90 ° or higher.In the present invention, the Static Water contact angle of hydrophobicity scratch coat is greater than 100 degree.
Term used herein " sun reflectivity " refers to that object reflexes to the solar radiation flux and the ratio that is incident on the solar radiation flux on the body surface of half spherical space.In the present invention, the sun reflectivity of heat-reflecting surface coating is at least 83%.
Term used herein " hemispherical emissivity " refers to, the ratio of the radiant exitance of a radiation source on half direction of bowl and the radiant exitance of the blackbody radiation source with same temperature.In the present invention, the hemispherical emissivity of heat-reflecting surface coating is at least 85%.
Term used herein " thermal transmittance " refers to that the difference in air temperature in the space enclosing structure both sides that are made of construction wall is under the condition of 1K, and by the heat output of unit area space enclosing structure, unit is W/ (m within the unit interval
2.K).In the present invention, at least one side is coated with the heat transfer efficiency of the construction wall of heat insulating coat system of the present invention, compares with the construction wall of uncoated described coating system, has descended at least 10%.
" the simulation energy-saving efficiency " mentioned herein based on building enclosure model and architectural exterior-protecting construction parameter by to from East China, south China, each department, North China typical urban Guangzhou, Shanghai and Beijing of choosing simulates and obtains.It determines that specifically method is referring to the simulation energy-saving efficiency of part of detecting.In the present invention, at least one side, preferably at least the outside, be coated with the construction wall of heat insulating coat system of the present invention, compare with the construction wall of uncoated described coating system, under the meteorological condition in Guangzhou, have at least 20%/annual simulation energy-saving efficiency, perhaps under the meteorological condition in Shanghai, have at least 15%/annual simulation energy-saving efficiency, perhaps under Pekinese's meteorological condition, have at least 6%/annual simulation energy-saving efficiency.For example, " the meteorological condition Imitating energy-saving efficiency in the xx area is a% " refers to, under the meteorological condition in xx area, at least one side, preferably at least the outside, be coated with the energy consumption for cooling and the summation (annual energy consumption) of winter heating's energy consumption in summer of the architectural exterior-protecting construction of heat insulating coat system, compare with the annual energy consumption of the architectural exterior-protecting construction of uncoated this heat insulating coat system, the percentage mark that descends, wherein the meteorological condition in xx area can be obtained by the AUTHORITATIVE DATA of the DOE of USDOE, and the meteorological file in the Guangzhou that is for example obtained by DOE is " CHN_Guangzhou_IMEC ".Particularly, can calculate by following formula:
Wherein:
A% represents to simulate energy-saving efficiency, in %;
Eu represents the annual energy consumption of the space enclosing structure of uncoated heat insulating coat system, in GJ; And
Ec represents to be coated with the annual energy consumption of the space enclosing structure of heat insulating coat system, in GJ.
The hydrophobicity scratch coat
Hydrophobicity scratch coat of the present invention is formed by the first coating composition, and wherein said the first coating composition comprises water based emulsion.
Term used herein " water based emulsion " refers to, the dispersion that synthetic resin (being polymer) forms in aqueous medium with particulate form.Therefore, when using for polymer, unless otherwise stated, term " water based emulsion " and " water-borne dispersions " can be used alternatingly in this application.For example, polyurethane aqueous latex also can be called the water-borne dispersions of polyether polyols with reduced unsaturation.Suitable emulsion polymerization technique is known to persons of ordinary skill in the art, it comprises following steps usually: can be selected under the effect of suitable emulsifier and/or dispersion stabilizer and by means of stirring, make polymerisable monomer in water, be dispersed into emulsion, and for example by adding the polymerization of initator trigger monomer.In the present invention, can (comprise by for example organo-functional group, but be not limited to carboxyl, hydroxyl, amino, NCO, sulfonic group etc.) modification polymer beads is carried out modification, thereby obtain the to have desired properties water based emulsion of (for example dispersed).Therefore, in the present invention, term " water based emulsion " not only comprises the dispersion of polymer beads in aqueous medium of non-modified, also comprises the dispersion of polymer beads in aqueous medium through the organo-functional group modification.The size of the polymer beads in the water based emulsion can be measured by the equal particle diameter of z known in the field, and it refers to, adopts dynamic light scattering method, for example adopts the size of the particle of Marvlen Zetasizer3000HS microcosmic particle size analyzer mensuration.In the present invention, the equal particle diameter of the z of polymer beads is 200nm at the most in the water based emulsion, is preferably at the most 150nm, is more preferably less than 130nm, also will be more preferably less than 125nm, even be more preferably less than 110nm or less.But the equal particle diameter of the z of polymer beads is preferably at least 50nm in the water based emulsion, is preferably at least 80nm or larger.
In embodiments of the present invention, the water based emulsion in described the first coating composition comprises vinylacetate class water based emulsion, acrylic compounds water based emulsion, silicone based water based emulsion, polyurethanes water based emulsion, fluoropolymers water based emulsion or its combination.
In another embodiment of the present invention, the water based emulsion in described the first coating composition comprises organosilicon water based emulsion, cinnamic acrylic ester water based emulsion, pure acrylate water based emulsion, organic-silicon-modified acrylic ester aquosity latex, vinylacetate water based emulsion, vinyl acetate-acrylate water based emulsion, ethylene-vinyl acetate water based emulsion, vinylacetate-ethene water based emulsion, vinyl acetate-acrylate-tertiary carbon acid esters (for example tertiary ethylene carbonate VeoVa 10) water based emulsion or its combination.
In the specific embodiment of the present invention, water based emulsion in described the first coating composition comprises the combination of organosilicon water based emulsion and cinnamic acrylic ester water based emulsion, perhaps the combination of pure acrylate water based emulsion and cinnamic acrylic ester water based emulsion.
In the film forming procedure of coating composition, the polymer beads in the latex flocks together along with the evaporation of moisture in the coating composition, thereby forms coating.The coating that is formed by the first coating composition of the present invention has hydrophobicity, and aqueous water permeates not too easily by this coating.On the other hand, because the water based emulsion particle has suitable grain size scope in the first coating composition, thereby formed coating has certain porosity, thereby helps the vapour molecule in the body of wall to spread to the outside, and has suitable cohesive strength.If the particle diameter of water based emulsion particle is excessive, for example greater than 200nm or larger, the coating that then forms is fine and close not, cohesive strength is not good; And if the particle diameter of water based emulsion particle is too small, for example less than 50nm or less, then can't form the coating with porosity at surface of wall.In the present invention, the coating that is formed by the first coating composition of the present invention not only has hydrophobicity, and has a certain porosity, so that the gained coating has suitable permeability rate, for example when measuring according to JG/T210-2007, have at the most 0.5mL/24 hour permeability rate, preferably have and be less than or equal to 0.3mL/24 hour permeability rate.Preferably, the hydrophobicity scratch coat that is formed by the first coating composition of the present invention for example has at least 100 Static Water contact angles of spending, preferably greater than or equal to the Static Water contact angles of 120 degree.That is to say, hydrophobicity scratch coat of the present invention is owing to have hydrophobicity thereby can reduce the infiltration of outside moisture in the body of wall, simultaneously owing to have certain porosity thereby can improve the outside diffusion of body of wall steam, this can have low water content for a long time so that be coated with the body of wall of this coating, thereby suppressed the increase of the wall thermal conductivity (or thermal transmittance) that causes owing to materials for wall suction, and improved human body and be coated with the indoor comfort level of this coating composition.
As mentioned above, water-based emulsion can adopt suitable emulsion polymerisation process preparation well known to those of ordinary skill in the art.Perhaps, as the example of water-based emulsion, can use arbitrarily suitable commercially available product, such as the organosilicon water-based emulsion, for example available from the BS-45 of German Wacker Chemie AG; The cinnamic acrylic ester water-based emulsion is for example available from RS 998A or the RS 968 of the well-off industry of Ahmedabad Co., Ltd; Pure acrylate water-based emulsion, for example PE-2133 of PolyWell company.
Preferably, the content of described water based emulsion in the first coating composition of the present invention is with respect to the gross weight of the first coating composition, in the scope of about 30 to 90 % by weight.Preferably, the content of water based emulsion in the first coating composition based on the gross weight of described the first coating composition, is at least about 35 % by weight, more preferably at least about 40 % by weight even more preferably at least about 45 % by weight or best at least about 50 % by weight.And preferably, the content of water based emulsion in the first coating composition, based on the gross weight of described the first coating composition, for about 85 % by weight at the most, be preferably at the most about 80 % by weight, more preferably at the most about 75 % by weight, also more preferably at the most about 70 % by weight even more preferably at the most about 65 % by weight or best about 60 % by weight at the most.In addition, if add extra water during the preparation of inner-wall coating composition, the amount of so extra water unborn water in water based emulsion should count the gross weight of described water-based emulsion.
The first coating composition of the present invention can further comprise one or more fillers.Term used herein " filler " refers to be applicable to any dilatation agent of coating, and it can be organic or inorganic for example particle form.Shape to particle does not have particular restriction, and it can have any suitable shape.The average grain diameter of filler can change in wide region, for example changes to about 50 microns scope in about 10 nanometers.One or more required character of coating that some fillers are also given composition and/or formed by said composition except the effect of the dilatation agent of playing coating.For example, some fillers coating required color that can give composition and be obtained by said composition.In this case, this filler is also referred to as " pigment ".Some fillers can improve chemistry and/or physical property, can improve especially the engineering properties of the coating that is obtained by said composition.In this case, this filler is also referred to as " reinforcer ".
Suitable exemplary filler for example comprises kaolin, kieselguhr, titanium oxide, calcium carbonate, talcum, barium sulfate, aluminium-magnesium silicate, silica and any combination thereof.In a preferred embodiment, filler can comprise titanium oxide, kieselguhr, calcium carbonate or its combination.
According to the present invention, the total amount of filler can change in wide region, and for example its total amount is extremely about 55 % by weight of about 10 % by weight with respect to the gross weight of described composition, is preferably about 20 % by weight to about 50 % by weight.According to the present invention, the amount of the filler that preferred the first coating composition comprises with respect to the gross weight of described composition, can be at least about 25 % by weight, more preferably at least about 30 % by weight even more preferably at least about 35 % by weight.According to the present invention, the amount of the filler that preferred the first coating composition comprises with respect to the gross weight of described composition, can be about 45 % by weight at the most, more preferably about 40 % by weight at the most.
If necessary, the optional additional additives that comprises of the first coating composition of the present invention, these additives can not adversely affect coating composition or solidified coating therefrom.Suitable additive comprises the aesthetic feeling of the processing characteristics that for example can improve composition or manufacturing property, enhancing composition or improves coating composition or those reagent of the particular functional character of hardening composition therefrom or characteristic (such as the adhesiveness to base material).The additive that can comprise is supporting agent, emulsifier, pigment, metal dust or lotion, filler, anti-migration aids, antiseptic, chain extender, curing compound, sliding agent, coagulating agent, sliding agent, biocide, plasticizing agent, crosslinking agent, defoamer, colorant, wax, antioxidant, anticorrosive, flow control agent, thixotropic agent, dispersing agent, adhesion promoter, UV stabilizing agent, scavenger, thickener, defoamer, pH adjusting agent, coalescents, solvent or its combination.The content of each optional member is enough to play it and is intended to achieve the goal, but preferably, such content can not adversely affect coating composition or solidified coating therefrom.In preferred embodiment, the first coating composition of the present invention can comprise thickener, dispersing agent, defoamer, pH adjusting agent, coalescents, solvent, bactericide, mould inhibitor or its any combination as additional additives.
According to the present invention, the total amount of additional additives can change in wide region, and for example its total amount is extremely about 20 % by weight of 0 % by weight with respect to the gross weight of described composition, is preferably about 0.1 % by weight to about 20 % by weight.According to the present invention, the amount of the additional additives that preferred the first coating composition comprises, with respect to the gross weight of described composition, can be at least about 0.5 % by weight, more preferably at least about 1.0 % by weight in addition more preferably at least about 2.0 % by weight, most preferably at least about 2.5 % by weight.According to the present invention, the amount of the additional additives that preferred the first coating composition comprises, with respect to the gross weight of described composition, can be about 15 % by weight at the most, more preferably at the most about 12 % by weight even more preferably at the most about 10 % by weight, about 8.0 % by weight at the most most preferably.
To the hydrophobic adjusting of coating can by those skilled in the art by known methods or treatment technology realize, for example by selecting suitable fluoropolymer resin to obtain hydrophobic coating, perhaps by the filler that uses in the coating composition is carried out hydrophobic treatments, for example filling surface is carried out silane coupled processing, thereby reach the purpose that obtains hydrophobic coating.In the first coating composition of the present invention, organosilicon water-based emulsion or cinnamic acrylic ester water-based emulsion are used as water-based emulsion.In film forming procedure, the hydrophobic group in the polymer emulsion molecule, the methyl-monosilane base in the organic silicon emulsion molecule for example can point to the interface of coating and air.Be that hydrophobic group covers in coating surface in tightly packed mode, thereby form hydrophobic coating.
Except the common method of above-mentioned two kinds of acquisition hydrophobic coatings, can also in coating composition, add water-repelling agent.The first coating composition of the present invention comprises, and based on the gross weight of described the first coating composition, 0.5 to 2.5wt% organic silicon hydrophobic agent is to strengthen the hydrophobicity of scratch coat.The example of organic silicon hydrophobic agent is the BS-1001 available from German Wacker Chemie AG.
The consumption of organic silicon hydrophobic agent can be determined by normal experiment according to hydrophobicity and the coating character of required coating by those skilled in the art.Usually, the consumption of organic silicon hydrophobic agent is based on the weight of the first coating composition of the present invention, in the scope of about 0.5 % by weight to 2.5 % by weight.If organosilyl consumption is lower than 0.5 % by weight, then can't plays and improve the hydrophobic effect of coating; If organosilyl consumption is too high, for example be higher than 2.5 % by weight, the coating composition that contains excessive water-repelling agent may encounter a difficulty at coating process.
In embodiments of the present invention, described the first coating composition comprises, based on the gross weight of described the first coating composition,
The water based emulsion of 30 to 90 % by weight;
The filler of 10 to 55 % by weight;
The additional additives of 0 to 20 % by weight, wherein said additional additives comprise thickener, dispersing agent, defoamer, pH adjusting agent, coalescents, solvent, bactericide, mould inhibitor or its any combination.
Preferably, described the first coating composition also comprises, based on the gross weight of described the first coating composition, and the organic silicon hydrophobic agent of 0.5 to 2.5 % by weight.
In a specific embodiment of the present invention, described the first coating composition comprises, with respect to the gross weight of described the first coating composition,
The organosilicon water based emulsion of 30 to 80 % by weight;
The cinnamic acrylic ester water based emulsion of 0 to 5 % by weight;
The described filler of 10 to 55 % by weight;
0.5 the described organic silicon hydrophobic agent to 2.5 % by weight; With
0.1 to the described additional additives of 15 % by weight, described additional additives comprises thickener, dispersing agent, defoamer, pH adjusting agent, coalescents, solvent, bactericide, mould inhibitor or its any combination.
In a concrete especially embodiment of the present invention, described the first coating composition comprises, with respect to the gross weight of described the first coating composition,
The organosilicon water based emulsion of 30 to 80 % by weight;
The cinnamic acrylic ester water based emulsion of 0 to 5 % by weight;
The filler of 10 to 55 % by weight;
0.4 the thickener to 1.0 % by weight;
0.2 the dispersing agent to 1.0 % by weight;
0.2 the defoamer to 0.6 % by weight;
0.2 the pH adjusting agent to 0.6 % by weight;
0.5 the coalescents to 2.5 % by weight;
0.5 the solvent to 2.5 % by weight;
0.1 the bactericide to 0.3 % by weight;
0.1 the mould inhibitor to 0.5 % by weight; With
0.5 the described organic silicon hydrophobic agent to 2.5 % by weight.
In another specific embodiment of the present invention, described the first coating composition comprises, with respect to the gross weight of described the first coating composition,
The cinnamic acrylic ester water based emulsion of 30 to 80 % by weight;
The pure acrylate water based emulsion of 0 to 5 % by weight;
The described filler of 10 to 55 % by weight;
0.5 the described organic silicon hydrophobic agent to 2.5 % by weight; With
0.1 to the described additional additives of 15 % by weight, described additional additives comprises thickener, dispersing agent, defoamer, pH adjusting agent, coalescents, solvent, bactericide, mould inhibitor or its any combination.
In another concrete especially embodiment of the present invention, described the first coating composition comprises, with respect to the gross weight of described the first coating composition,
The cinnamic acrylic ester water based emulsion of 30 to 80 % by weight;
The pure acrylate water based emulsion of 0 to 5 % by weight;
The filler of 10 to 55 % by weight;
0.4 the thickener to 1.0 % by weight;
0.2 the dispersing agent to 1.0 % by weight;
0.2 the defoamer to 0.6 % by weight;
0.2 the pH adjusting agent to 0.6 % by weight;
0.5 the coalescents to 2.5 % by weight;
0.5 the solvent to 2.5 % by weight;
0.1 the bactericide to 0.3 % by weight;
0.1 the mould inhibitor to 0.5 % by weight; With
0.5 the organic silicon hydrophobic agent to 2.5 % by weight.
The heat reflectivity finishing coat
Heat reflectivity finishing coat of the present invention is formed by the second coating composition, the heat reflection filler that wherein said the second coating composition comprises.
Term used herein " heat reflection filler " refers to, improves coating composition to the filler of the albedo of sunshine.In the present invention, the sun reflectivity that contains the finishing coat of heat reflection filler is at least 83%, and/or the hemisphere transmitting ratio is at least 85%, and preferably, the sun reflectivity of this finishing coat is at least 84%, and/or the hemisphere transmitting ratio is at least 87%.
In embodiments of the present invention, the heat reflection filler in described the second coating composition comprises titanium oxide, ceramic fine bead or its any combination.In preferred embodiment of the present invention, the heat reflection filler in the second coating composition comprises the combination of ceramic fine bead and titanium dioxide, and the content of this ceramic fine bead, with respect to the gross weight of described the second coating composition, in the scope of 5 to 10 % by weight.
Ceramic fine bead of the present invention can be translucent, high-intensity tiny microballon.In one embodiment, described ceramic fine bead can be the silicate ceramics microballon, is preferably the aluminum silicate ceramic microballon, more specifically is the alkaline silicate aluminum ceramic microspheres.The average grain diameter of ceramic fine bead, for example D
50, can in wide region, change, for example preferably change to about 50 microns scope about 1, more preferably change to about 45 microns scope about 3.
In one embodiment, described ceramic fine bead can comprise solid ceramic microballon, hollow ceramic microballon or its combination.In a preferred embodiment, described ceramic fine bead comprises average grain diameter (D
50) at about 3 microns solid ceramic microballons to about 10 micrometer ranges.In another preferred embodiment, described ceramic fine bead comprises average grain diameter (D
50) at about 10 hollow ceramic microballons to about 50 micrometer ranges.
As the example of ceramic fine bead, can use arbitrarily suitable commercially available product, such as using available from 3M Corporation the Zeeospheres of US
TMW-610 solid ceramic microballon or join the LJTF-01 hollow ceramic microspheres of clean trade Co., Ltd available from Guangzhou.
Titanium dioxide of the present invention is to be preparation reflection type thermal insulation coating composition filler commonly used in the paint field.In one embodiment, described titanium dioxide can be rutile titanium dioxide.
As the example of titanium dioxide, can use arbitrarily suitable commercially available product, such as the R298 rutile titanium white powder that uses available from Shanghai face titanium Industrial Co., Ltd..
According to the present invention, the content of heat reflection filler, with respect to the gross weight of described the second coating composition, in about 20 % by weight to the scope of about 40 % by weight, preferably in about 20 % by weight to the scope of about 30 % by weight.Preferably, in the heat reflection filler, the content of ceramic fine bead is with respect to the gross weight of described the second coating composition, in the scope of about 5 to 10 % by weight.
The inventor surprisingly finds, the second coating composition of the present invention can form and has the reflexive coating of excellent heat when the heat reflection filler that is comprised of rutile titanium dioxide and ceramic fine bead that contains 20 to 40wt%.In addition, the inventor also finds, the combination that the heat reflection filler comprises hollow ceramic microspheres and solid ceramic microballon can reduce the consumption as the ceramic fine bead of heat reflection filler greatly, and can not damage the heat reflectivity of coating.
Do not wish to be entangled in any theory, the inventor thinks in theory: in the coating forming procedure of the second coating composition, thereby the ceramic fine bead that comprises in the composition tends to move to and forms the surface course that is rich in ceramic fine bead on the coating surface, this can improve the surface nature of coating, such as having increased surperficial heat reflectivity.
Except the heat reflection fillers such as ceramic fine bead, titanium dioxide, mix the present invention's the second coating composition and can also comprise any other filler that is suitable for being used in the coating composition.After this, for the ease of discussing, other filler except heat reflection filler ceramic fine bead that mixes in the inner-wall coating composition is called as " additional filler ".Suitable exemplary additional filler for example comprises kaolin, kieselguhr, calcium carbonate, talcum, barium sulfate, aluminium-magnesium silicate, silica and any combination thereof.In a preferred embodiment, filler can comprise kaolin, calcium carbonate or its combination.
In the present invention, the consumption of described additional filler can be determined as required by those skilled in the art.Preferably, the second coating composition comprises, with respect to the gross weight of described the second coating composition, and the additional filler of 5 to 30 % by weight.
The second coating composition of the present invention further comprises water based emulsion.Described water based emulsion can have with aforementioned the first coating composition in the identical or similar composition of water based emulsion that relates to, but also can be different water based emulsions.Preferably, the water based emulsion in the second coating composition is identical or similar with water based emulsion in the first coating composition, is beneficial to be coated with the adhesion of interlayer.
In embodiments of the present invention, the water based emulsion in described the second coating composition comprises organosilicon water based emulsion, cinnamic acrylic ester water based emulsion, pure acrylate water based emulsion, organic-silicon-modified acrylic ester aquosity latex, vinylacetate water based emulsion, vinyl acetate-acrylate water based emulsion, vinylacetate-ethene water based emulsion, ethylene-vinyl acetate water based emulsion, vinyl acetate-acrylate-tertiary carbon acid esters (for example tertiary ethylene carbonate VeoVa) water based emulsion or its combination.
As described in hydrophobicity scratch coat part, water-based emulsion can adopt suitable emulsion polymerisation process preparation well known to those of ordinary skill in the art.Perhaps, as the example of water-based emulsion, can use arbitrarily suitable commercially available product, such as the pure acrylate water-based emulsion, the ECO 612AP of BASF AG for example.
Preferably, the content of described water based emulsion in the second coating composition of the present invention is with respect to the gross weight of the second coating composition, in the scope of about 30 to 78 % by weight.Preferably, the content of water based emulsion in the second coating composition based on the gross weight of described the second coating composition, is at least about 35 % by weight, more preferably at least about 40 % by weight even more preferably at least about 45 % by weight or best at least about 50 % by weight.And preferably, the content of water based emulsion in the second coating composition, based on the gross weight of described the second coating composition, be about 75 % by weight at the most, more preferably at the most about 70 % by weight even more preferably at the most about 65 % by weight or best about 60 % by weight at the most.In addition, if add extra water during the preparation of coating composition, the amount of so extra water unborn water in water based emulsion should count the gross weight of described water-based emulsion.
If necessary, the optional additional additives that comprises of the second coating composition of the present invention, these additives can not adversely affect coating composition or solidified coating therefrom.Suitable additive comprises the aesthetic feeling of the processing characteristics that for example can improve composition or manufacturing property, enhancing composition or improves coating composition or those reagent of the particular functional character of hardening composition therefrom or characteristic (such as the adhesiveness to base material).The additive that can comprise is supporting agent, emulsifier, pigment, metal dust or lotion, filler, anti-migration aids, antiseptic, chain extender, curing compound, sliding agent, coagulating agent, sliding agent, biocide, plasticizing agent, crosslinking agent, defoamer, colorant, wax, antioxidant, anticorrosive, flow control agent, thixotropic agent, dispersing agent, adhesion promoter, UV stabilizing agent, scavenger, thickener, defoamer, pH adjusting agent, coalescents, solvent or its combination.The content of each optional member is enough to play it and is intended to achieve the goal, but preferably, such content can not adversely affect coating composition or solidified coating therefrom.In preferred embodiment, the second coating composition of the present invention can comprise additional filler, thickener, dispersing agent, defoamer, pH adjusting agent, coalescents, solvent, bactericide, mould inhibitor or its any combination as additional additives.The additional additives that uses in the kind of the additive in the described additional additives except additional filler and the above-mentioned hydrophobicity scratch coat is similar.In addition, the consumption of these additives can be determined as required by those skilled in the art.
The second coating composition of the present invention can also further comprise the organic silicon hydrophobic agent.The organic silicon hydrophobic agent of using in the kind of described organic silicon hydrophobic agent and consumption and the above-mentioned hydrophobicity scratch coat is similar.
In embodiments of the present invention, described the second coating composition comprises, based on the gross weight of described the second coating composition,
The water based emulsion of 30 to 80 % by weight;
The heat reflection filler of 20 to 40 % by weight;
The additional additives of 0 to 40 % by weight, wherein said additional additives comprise additional filler, thickener, dispersing agent, defoamer, pH adjusting agent, coalescents, solvent, bactericide, mould inhibitor or its any combination.
Preferably, described the second coating composition also comprises, based on the gross weight of described the second coating composition, and the organic silicon hydrophobic agent of 0.5 to 2.5 % by weight.
In a specific embodiment of the present invention, described the second coating composition comprises, based on the gross weight of described the second coating composition,
The pure acrylate water based emulsion of 30 to 78 % by weight;
The described heat reflection filler of 20 to 40 % by weight, described heat reflectivity filler comprises solid ceramic microballon, hollow ceramic microspheres, titanium dioxide or its combination;
0.5 the described organic silicon hydrophobic agent to 2.5 % by weight; With
0.1 to the described additional additives of 40 % by weight, described additional additives comprises additional filler, thickener, dispersing agent, defoamer, pH adjusting agent, coalescents, solvent, bactericide, mould inhibitor or its any combination.
In a special specific embodiment of the present invention, described the second coating composition comprises, with respect to the gross weight of described the second coating composition,
The pure acrylate water based emulsion of 30 to 70 % by weight;
The described heat reflection filler of 20 to 40 % by weight, described heat reflectivity filler comprises solid ceramic microballon, hollow ceramic microspheres, titanium dioxide or its combination;
The additional filler of 5 to 30 % by weight;
0.4 the thickener to 2.0 % by weight;
0.2 the dispersing agent to 1.0 % by weight;
0.2 the defoamer to 0.6 % by weight;
0.1 the pH adjusting agent to 0.3 % by weight;
The coalescents of 0 to 1.0 % by weight;
The solvent of 0 to 1.0 % by weight;
0.1 the bactericide to 0.3 % by weight;
0.1 the mould inhibitor to 0.5 % by weight; With
0.5 the organic silicon hydrophobic agent to 2.5 % by weight.
In the present invention, coating composition can comprise thickener.Suitable thickener comprises polyurethane-type thickener or its any combination of cellulose ethers thickener, alkali swelling type thickener, polyurethane-type thickener, hydrophobically modified.All types of thickeners all are commercially available commodity.For example, as the example of cellulose ethers thickener, can use the methyl hydroxyethylcellulose ethers thickener HEC 250HBR available from U.S. Aqualon Company.As the example of alkali swelling type thickener, can use the Rohm﹠amp available from the U.S.; The TT935 of Haas company or use are available from the Rheotech 2800 of Coatex company.As the example of polyurethane thickener, can use the L-150 available from ROCKWOOD company.
In a preferred embodiment, described the first coating composition with respect to the gross weight of described composition, comprises about 0.4 % by weight to the thickener of about 1.0 % by weight.In another preferred embodiment, described the second coating composition with respect to the gross weight of described composition, comprises about 0.4 % by weight to the thickener of about 2.0 % by weight.
In the present invention, coating composition can comprise dispersing agent.Suitable dispersing agent can comprise anionic dispersing agent, cationic dispersing agent, non-ionic dispersing agent, amphoteric dispersant or its any combination.All types of dispersing agents all are commercially available commodity.In preferred embodiment, suitable dispersing agent comprises polyacrylic acid dipersant, poly-methyl acrylate dispersing agent, polycarboxylate salt dispersant or its any combination.As the example of polyacrylic acid dipersant, can use the Rohm﹠amp available from the U.S.; The polyacrylic acid dipersant 731A of Haas company.
In a preferred embodiment, described the first coating composition or described the second coating composition with respect to the gross weight of described coating composition, can comprise about 0.2 % by weight to the dispersing agent of about 1.0 % by weight.
In the present invention, coating composition can comprise defoamer.Suitable defoamer includes organic siloxane defoamer, grease defoamer, polyethers defoamer, polyether-modified silicone based defoamer or its any combination.All types of defoamers all are commercially available commodity.As the example of organosiloxane defoamer, can use the SN154 available from Japanese Nuo Puke.As the example of grease defoamer, can use the 122NS available from Japanese Nuo Puke.
In a preferred embodiment, described the first coating composition or the second coating composition with respect to the gross weight of described coating composition, can comprise about 0.2 % by weight to the defoamer of about 0.6 % by weight.
In the present invention, coating composition can comprise pH adjusting agent.Suitable pH adjusting agent comprises inorganic pH adjusting agent, and such as natrium carbonicum calcinatum, NaOH, potassium hydroxide, sodium acid carbonate, hydramine, ammoniacal liquor, triethylamine, perhaps organic pH adjusting agent is such as the organosilicon pH adjusting agent.In a preferred embodiment, pH adjusting agent comprises the organosilicon pH adjusting agent.
In preferred embodiment, described the first coating composition or the second coating composition with respect to the gross weight of described coating composition, can comprise about 0.2 pH adjusting agent to about 0.6 % by weight.
In the present invention, coating composition comprises coalescents.Suitable coalescents comprises the dodecane alcohol ester.
In preferred embodiment, described the first coating composition with respect to the gross weight of described coating composition, comprises about 0.5 coalescents to about 2.5 % by weight.Another preferred embodiment in, described the second coating composition with respect to the gross weight of described coating composition, comprises the coalescents of 0 to 1.0 % by weight.
In the present invention, coating composition can comprise solvent.Suitable solvent comprises alcohols solvent, ketones solvent or its combination.As the example of alcohols solvent, can use general industry product propane diols.
In preferred embodiment, described the first coating composition with respect to the gross weight of described coating composition, comprises the solvent of about 0.5 to 2.5 % by weight.Another preferred embodiment in, described the second coating composition with respect to the gross weight of described coating composition, comprises the solvent of about 0 to 1.0 % by weight.
In the present invention, coating composition can comprise bactericide.Suitable bactericide comprises quaternary ammonium salt bactericide, chloride bactericide, peroxide bactericide, azoles quinoline series bactericidal agent, aldehydes bactericide or its arbitrary composition.All types of bactericide all are commercially available commodity.For example, as the example of azoles quinoline series bactericidal agent, can use the BIT20 available from Chinese Ou Mo company.
In preferred embodiment, described the first coating composition or described the second coating composition with respect to the gross weight of described coating composition, can comprise about 0.1 bactericide to about 0.3 % by weight.
In the present invention, coating composition can comprise mould inhibitor.Suitable mould inhibitor comprises phenols mould inhibitor, chlorophenols mould inhibitor, ester class mould inhibitor, heterocyclic mould inhibitor, amide-type mould inhibitor, organic metal salt mould inhibitor, inorganic salts mould inhibitor or its any combination.All types of mould inhibitors all are commercially available commodity.For example, as the example of bactericide, can use W350.
In preferred embodiment, described the first coating composition or described the second coating composition with respect to the gross weight of described coating composition, can comprise about 0.1 mould inhibitor to about 0.5 % by weight.
In the present invention, the preparation of coating composition can adopt any suitable mixed method well known to those of ordinary skill in the art to realize.For example coating composition can be made by following: the additional additive of water-based emulsion, filler and existence is added in the container, then the gained mixture is stirred to evenly.Perhaps coating composition can be made by following: the part additional additives is mixed with filler, and then add water-based emulsion and remaining additional additives, thereby form uniform mixture.If necessary, can during the preparation of inner-wall coating composition, add extra water.The extra water yield should count the gross weight of described water-based emulsion.
The first and second coating compositions of the present invention can sequentially be coated with by conventional method known to persons of ordinary skill in the art.For example, coating composition can apply by spray gun, roller or brushing.By this way, form respectively scratch coat and finishing coat by the first coating composition of the present invention and the second coating composition, i.e. the heat insulating coat system.
In the present invention, the heat insulating coat system that comprises scratch coat and top coat can be coated on the various construction walls, to improve the heat-proof quality of construction wall.In the specific embodiment, described construction wall comprises following constructional materials, and described constructional materials comprises concrete block, gypsum plank, sandlime brick, gas concrete, composite light-weight scutum, cement fibrolite plate and any combination thereof.
Describe by the following examples the present invention in detail.Yet the present invention is not limited to these embodiment.
Embodiment
Part of detecting
Permeability rateCarry out according to the regulation among the construction industry industry standard JG/T 210-2007.
The Static Water contact angleFollowing mensuration: on Dataphysics OCA 30 instruments, utilize deionized water as test liquid, at room temperature (～21 ℃) measure the Static Water contact angle, and determine by the average of three differences measurement numerical value on each sample surfaces.
Sun reflectivityRegulation according to the method 210 among the GJB GJB 2502-1996 is carried out.
Hemispherical emissivityRegulation according to the method 310 among the GJB GJB 2502-1996 is carried out.
Thermal transmittanceCarry out according to the regulation among standard GB/T/T 23483-2009 " building exterior-protected and heating quantity measuring method ".
The simulation energy-saving efficiencyBased on the following building maintenance structure of maintenance and architectural exterior-protecting construction parameter, the simulation of energy consumption software Energyplus of employing USDOE exploitation (
Http:// www.eere.energy.gov/buildings/envergyplus/) carry out, wherein the meteorological data in each city derives from the AUTHORITATIVE DATA of DOE (USDOE).The city of specifically choosing such as following table 1:
The meteorological file in District Representative city
Shanghai, East China CHN_Shanghai_SWERA
Guangzhou, south China CHN_Guangzhou_IWEC
Beijing, North China CHN_Beijing_SWERA
The structure of architectural exterior-protecting construction is as follows: this building is 2 layers, long-pending 100 square metres of every aspect, 3.2 meters of floor heights, and main body is oriented south orientation.In east, west, south orientation be provided with horizontal external sunshade.Window-wall ratio is 0.25.Concrete structure is referring to accompanying drawing 1.
Used Design of Retaining Structure parameter in the simulation process:
Exterior wall Class1 (thermal transmittance k=0.857w/m2.K)
Exterior wall type 2 (thermal transmittance k=1.413w/m2.K)
Exterior wall type 3 (thermal transmittance k=2.120w/m2.K)
Exterior wall type 4 (thermal transmittance k=1.242w/m2.K)
Exterior wall type 5 (thermal transmittance k=0.973w/m2.K)
Interior wall (thermal transmittance k=1.99w/m2.K)
Exterior window (6+13+6) (thermal transmittance k=2.4w/m2.K)
Roof (thermal transmittance k=0.69w/m2.K)
Ground (thermal transmittance k=0.46w/m2.K)
Indoor design: winter: 18 ℃
Summer: 26 ℃
Scratch coat
Forming the raw material that comprises in the first coating composition of scratch coat is listed in as in the following table 1.
Table 1
| Trade name | Supplier | Describe |
| BS-45 | Germany's watt gram | The organosilicon latex |
| RS-998A | The well-off industry of Ahmedabad Co., Ltd | The cinnamic acrylic ester latex |
| RS-968 | The well-off industry of Ahmedabad Co., Ltd | The cinnamic acrylic ester latex |
| PE-2133 | PolyWell company | The pure acrylate emulsion |
| Aquabead525 | Micro Powders | The wax emulsion |
| R298 | Shanghai face titanium Industrial Co., Ltd. | The rutile titanium white powder |
| HS801A | China Hua Sheng company | Kieselguhr |
| GF117 | China's wide Fujian material | Powdered whiting |
| HEC 250HBR | U.S. Aqualon Company | The cellulose ethers thickener |
| TT935 | U.S. Rohm﹠Haas company | Alkali swelling type thickener |
| 731A | U.S. Rohm﹠Haas company | The polyacrylic acid dipersant |
| SN154 | Japan Nuo Puke | The organosiloxane defoamer |
| 122NS | Japan Nuo Puke | The grease defoamer |
| BS-16 | Germany Wa Ke company | The organosilicon pH adjusting agent |
| BS-1001 | Germany Wa Ke company | The organic silicon hydrophobic agent |
| BIT20 | Chinese Shanghai Ou Mo chemical industry | Bactericide |
| ROCIMA350 | U.S. Rohm﹠Haas company | Mould inhibitor |
| The dodecane alcohol ester | The general industry product | Coalescents |
| Propane diols | The general industry product | Solvent |
| Deionized water |
Be used to form following being prepared of the first coating composition of scratch coat.
Under 350-450rpm/ minute stirring at low speed, add 200g deionized water and thickener HEC 250HBR, dispersing agent 731A, defoamer SN154, pH adjusting agent BS-16 in the agitator, and stirred 5-10 minute, thereby evenly.Then in mixture, add titanium dioxide R298, HS801A, GF117, and with 800-1250rpm/ minute high-speed stirred 20-30 minute, thereby uniform sizing material formed.Under 500-700rpm/ minute middling speed stirring, in uniform sizing material, add defoamer 122NS, propane diols, dodecane alcohol ester, wax latex A quabead 525, organic silicon hydrophobic agent BS-1001, the emulsion combination (combination of use organic silicon emulsion BS-45 and cinnamic acrylic ester emulsion 998A in embodiment 1 at last; The combination of pure the third acrylic acid ester emulsion 2133 of use and cinnamic acrylic ester emulsion RS-968 in embodiment 2), BIT20 bactericide, W350 mould inhibitor, thickener TT935 and remaining part deionized water, until evenly, thereby form the first coating composition.The amounts specified of each component in embodiment 1 and 2 the first coating composition is in table 2.
Table 2: the composition of the first coating composition and performance thereof
Be can clearly be seen that by above table 2 result, the water based emulsion of embodiment 1 and 2 coating composition has the suitably low equal particle diameter of z, and the scratch coat that is formed by this coating composition has strong-hydrophobicity, wherein permeability rate be only for the contact of 0.2mL/24 hour and water can reach up to 120 degree, thereby this scratch coat can produce the air-permeable, hydrophobic effect.And adopt permeability rate and the water contact angle of the coating that traditional common coating composition obtains not ideal, for example water contact angle is low to moderate 65 degree usually, can't obtain the hydrophobic, air-permeability that the present invention obtains.
Finishing coat
Forming the raw material that comprises in the second coating composition of finishing coat is listed in as in the following table 3.
Table 3
| Trade name | Supplier | Describe |
| ECO 612 AP | BASF | The pure acrylate emulsion |
| Aquabead525 | Micro Powders | The wax emulsion |
| LJTF-01 | Guangzhou joins clean trade Co., Ltd | Hollow ceramic microspheres |
| W-610 | Minnesota Mining and Manufacturing Company | The solid ceramic microballoon |
| R298 | Shanghai face titanium Industrial Co., Ltd. | The rutile titanium white powder |
| HS801A | China Hua Sheng company | Calcined kaolin/kieselguhr |
| GF117 | China's wide Fujian material | Powdered whiting |
| HEC 250HBR | U.S. Aqualon Company | The cellulose ethers thickener |
| Rheotech 2800 | Coatex company | Alkali swelling type thickener |
| L-150 | ROCKWOOD company | The polyurethane-type thickener |
| 731A | U.S. Rohm﹠Haas company | The polyacrylic acid dipersant |
| SN154 | Japan Nuo Puke | The organosiloxane defoamer |
| 122NA | Japan Nuo Puke | The grease defoamer |
| BS-16 | Germany Wa Ke company | The organosilicon pH adjusting agent |
| BS-1001 | Germany Wa Ke company | The organic silicon hydrophobic agent |
| BIT20 | Chinese Shanghai Ou Mo chemical industry | Bactericide |
| ROCIMA350 | U.S. Rohm﹠Haas company | Mould inhibitor |
| The dodecane alcohol ester | The general industry product | Coalescents |
| Propane diols | The general industry product | Solvent |
| Deionized water |
Be used to form following being prepared of the second coating composition of finishing coat.
Under 350-450rpm/ minute stirring at low speed, add 150g deionized water and thickener HEC 250HBR, dispersing agent 731A, defoamer SN154, pH adjusting agent BS-16 in the agitator, and stirred 5-10 minute, thereby evenly.Then in mixture, add titanium dioxide R298, HS801A, solid ceramic microballon W-610, hollow ceramic microspheres LJTF-01 and GF117, and with 800-1250rpm/ minute high-speed stirred 20-30 minute, thereby uniform sizing material formed.At last under 500-700rpm/ minute middling speed stirring, in uniform sizing material, add defoamer 122NS, dodecane alcohol ester, wax latex A quabead 525, BIT20 bactericide, W350 mould inhibitor, organic silicon hydrophobic agent BS-1001, pure acrylate emulsion ECO612AP, thickener COATEX 2800, thickener L-150, propane diols and remaining part deionized water, until evenly, thereby form the second coating composition.The amounts specified of each component in the second coating composition of embodiment 3 is in table 4.
Table 4: the composition of the second coating composition and performance thereof
Be can clearly be seen that by above table 4 result the coating composition of embodiment 3 contains the heat reflection fillers such as hollow ceramic microspheres, solid ceramic microballon and rutile titanium white powder, and have the heat-flash reflectivity by the scratch coat that this coating composition forms.
Coating system
Choose respectively three cities with characteristic feature in East China, south China, North China: Shanghai, Guangzhou, Beijing.Wherein, body of wall Class1 (k=0.857w/m2.K) is adopted in Beijing and District of Shanghai design, and In Guangzhou Area is then selected the higher body of wall type 2 (k=1.413w/m2.K) of another thermal transmittance.Coating system of the present invention (comprising scratch coat and finishing coat) is applied on the inner surface or external surface of body of wall, then measures the thermal transmittance of gained body of wall.Test result is listed in the table 5.
The comparative result of the thermal transmittance of the body of wall of table 5. coating and uncoated coating system of the present invention
| The area | Coating layer system not | Body of wall is inboard | Wall outer side |
| Shanghai | 1.083w/m2.K | 0.937w/m2.K | 0.857w/m2.K |
| Beijing | 1.083w/m2.K | 0.937w/m2.K | 0.857w/m2.K |
| Guangzhou | 1.643w/m2.K | 1.473w/m2.K | 1.413w/m2.K |
By above result as seen, compare with the body of wall of uncoated coating system, the body of wall that is coated with coating system of the present invention on it has the thermal transmittance of obvious reduction.Especially, when coating system of the present invention was coated on wall outer side, the effect that reduces thermal transmittance was more obvious.That is, be coated with the thermal transmittance of body of wall of coating system of the present invention almost near design load.
In addition, as described in part of detecting, the body of wall that the outside or both sides is coated with coating system of the present invention carries out annual energy consumption testing.The results are shown in the table 6.
The comparative result of the simulation energy-saving efficiency of the body of wall of table 6. coating and uncoated coating system of the present invention
| The area | Benchmark (GJ) | Wall outer side (GJ) | Annual simulation fractional energy savings |
| Shanghai | 24.88 | 21.47 | 15.41％ |
| Beijing | 36.5 | 34.3 | 6.03％ |
| Guangzhou | 29.15 | 22.54 | 22.68％ |
| Benchmark (GJ) | Body of wall both sides (GJ) | Annual simulation fractional energy savings | |
| Shanghai | 25.38 | 20.42 | 19.54％ |
| Beijing | 36.5 | 34.3 | 6.03％ |
| Guangzhou | 29.15 | 21.58 | 25.97％ |
By above result as seen, coating system of the present invention has significant energy-saving effect.In particular, at building energy consumption mainly take the summer air-conditioning cooling as main area, Guangzhou for example, energy-saving efficiency is more remarkable.
Although the present invention is described with reference to a large amount of embodiments and embodiment, those of ordinary skills can recognize according to content disclosed by the invention can design other embodiment, and this does not break away from protection scope of the present invention and spirit.
Claims (26)
1. construction wall heat insulating coat system, it comprises:
(a) the hydrophobicity scratch coat that is formed by the first coating composition, wherein said the first coating composition comprises water based emulsion, and the permeability rate of described scratch coat is 0.5mL/24 hour at the most; With
(b) the heat reflectivity finishing coat that is formed by the second coating composition, wherein said the second coating composition comprises the heat reflection filler, and the sun reflectivity of described finishing coat is at least 83%, and/or the hemisphere transmitting ratio is at least 85%.
2. construction wall as claimed in claim 1 heat insulating coat system, wherein, the permeability rate of described scratch coat is less than or equal to 0.3mL/24 hour.
3. construction wall as claimed in claim 1 heat insulating coat system, wherein, the Static Water contact angle of described scratch coat is greater than 100 degree.
4. construction wall as claimed in claim 1 heat insulating coat system, wherein, the Static Water contact angle of described scratch coat is more than or equal to 120 degree.
5. construction wall as claimed in claim 1 heat insulating coat system, wherein, the sun reflectivity of described finishing coat is at least 84%, and/or the hemisphere transmitting ratio is at least 87%.
6. such as the described construction wall of any one in the claim 1 to 5 heat insulating coat system, wherein, the described water based emulsion in described the first coating composition comprises the equal particle diameter of z and is the polymer beads of 200nm at the most.
7. such as the described construction wall of any one in the claim 1 to 5 heat insulating coat system, wherein, the described water based emulsion in described the first coating composition comprises vinylacetate class water based emulsion, acrylic compounds water based emulsion, silicone based water based emulsion, polyurethanes water based emulsion, fluoropolymers water based emulsion or its combination.
8. such as the described construction wall of any one in the claim 1 to 5 heat insulating coat system, wherein, the described water based emulsion in described the first coating composition comprises organosilicon water based emulsion, cinnamic acrylic ester water based emulsion, pure acrylate water based emulsion, organic-silicon-modified acrylic ester aquosity latex, vinylacetate water based emulsion, vinyl acetate-acrylate water based emulsion, vinylacetate-ethene water based emulsion, ethylene-vinyl acetate water based emulsion, vinyl acetate-acrylate-tertiary carbon acid esters water based emulsion or its combination.
9. such as the described construction wall of any one in the claim 1 to 5 heat insulating coat system, wherein, described heat reflection filler comprises ceramic fine bead, titanium dioxide and combination thereof.
10. construction wall as claimed in claim 9 heat insulating coat system, wherein, described heat reflection filler comprises the combination of ceramic fine bead and titanium dioxide, and the content of described ceramic fine bead, with respect to the gross weight of described the second coating composition, in the scope of 5 to 10 % by weight.
11. such as claim 9 or 10 described construction wall heat insulating coat systems, wherein, described ceramic fine bead comprises solid ceramic microballon, hollow ceramic microballon or its combination.
12. such as claim 9 or 10 described construction wall heat insulating coat systems, wherein, described titanium dioxide comprises rutile titanium dioxide.
13. such as the described construction wall of any one in the claim 1 to 5 heat insulating coat system, wherein, described the first coating composition comprises, based on the gross weight of described the first coating composition,
The described water based emulsion of 30 to 90 % by weight;
The filler of 10 to 55 % by weight;
The additional additives of 0 to 20 % by weight, wherein said additional additives comprise thickener, dispersing agent, defoamer, pH adjusting agent, coalescents, solvent, bactericide, mould inhibitor or its any combination.
14. construction wall as claimed in claim 13 heat insulating coat system, wherein, described the first coating composition also comprises, based on the gross weight of described the first coating composition, and the organic silicon hydrophobic agent of 0.5 to 2.5 % by weight.
15. such as the described construction wall of any one in the claim 13 to 14 heat insulating coat system, wherein, described the first coating composition comprises, with respect to the gross weight of described the first coating composition,
The organosilicon water based emulsion of 30 to 80 % by weight;
The cinnamic acrylic ester water based emulsion of 0 to 5 % by weight;
The described filler of 10 to 55 % by weight;
0.5 the described organic silicon hydrophobic agent to 2.5 % by weight; With
0.1 to the described additional additives of 15 % by weight, described additional additives comprises thickener, dispersing agent, defoamer, pH adjusting agent, coalescents, solvent, bactericide, mould inhibitor or its any combination.
16. such as the described construction wall of any one in the claim 13 to 14 heat insulating coat system, wherein, described the first coating composition comprises, with respect to the gross weight of described the first coating composition,
The cinnamic acrylic ester water based emulsion of 30 to 80 % by weight;
The pure acrylate water based emulsion of 0 to 5 % by weight;
The described filler of 10 to 55 % by weight;
0.5 the described organic silicon hydrophobic agent to 2.5 % by weight; With
0.1 to the described additional additives of 15 % by weight, described additional additives comprises thickener, dispersing agent, defoamer, pH adjusting agent, coalescents, solvent, bactericide, mould inhibitor or its any combination.
17. such as the described construction wall of any one in the claim 1 to 5 heat insulating coat system, wherein, described the second coating composition comprises, based on the gross weight of described the second coating composition,
The water based emulsion of 30 to 80 % by weight;
The described heat reflection filler of 20 to 40 % by weight;
The additional additives of 0 to 40 % by weight, wherein said additional additives comprise additional filler, thickener, dispersing agent, defoamer, pH adjusting agent, coalescents, solvent, bactericide, mould inhibitor or its any combination.
18. construction wall as claimed in claim 17 heat insulating coat system, the described water based emulsion in described the second coating composition comprise organosilicon water based emulsion, cinnamic acrylic ester water based emulsion, pure acrylate water based emulsion, organic-silicon-modified acrylic ester aquosity latex, vinylacetate water based emulsion, vinyl acetate-acrylate water based emulsion, vinylacetate-ethene water based emulsion, ethylene-vinyl acetate water based emulsion, vinyl acetate-acrylate-tertiary carbon acid esters water based emulsion or its combination.
19. such as claim 17 or 18 described construction wall heat insulating coat systems, wherein, described the second coating composition also comprises, based on the gross weight of described the second coating composition, and the organic silicon hydrophobic agent of 0.5 to 2.5 % by weight.
20. such as the described heat insulating coat system of any one in the claim 17 to 19, wherein, described the second coating composition comprises, with respect to the gross weight of described the second coating composition,
The pure acrylate water based emulsion of 30 to 78 % by weight;
The described heat reflection filler of 20 to 40 % by weight, described heat reflectivity filler comprises solid ceramic microballon, hollow ceramic microspheres, titanium dioxide or its combination; With
0.5 the described organic silicon hydrophobic agent to 2.5 % by weight;
0.1 to the described additional additives of 40 % by weight, described additional additives comprises additional filler, thickener, dispersing agent, defoamer, pH adjusting agent, coalescents, solvent, bactericide, mould inhibitor or its any combination.
21. such as the described construction wall of any one in the claim 1 to 5 heat insulating coat system, wherein, described construction wall comprises following constructional materials, and described constructional materials comprises concrete block, gypsum plank, sandlime brick, gas concrete, composite light-weight scutum, cement fibrolite plate and any combination thereof.
22. such as the described construction wall of any one in the claim 1 to 21 heat insulating coat system, wherein, described heat insulating coat system is as interior wall coating system and/or outer wall coating system.
23. such as the described construction wall of any one in the claim 1 to 22 heat insulating coat system, wherein, at least one side is coated with the thermal transmittance of the construction wall of described coating system, compares with the thermal transmittance of the construction wall of uncoated described coating system, has descended at least 10%.
24. such as the described heat insulating coat system of any one in the claim 1 to 23, wherein, at least one side is coated with the construction wall of described coating system, compare with the construction wall of uncoated described coating system, under the meteorological condition in Guangzhou, has at least 20%/annual simulation energy-saving efficiency, perhaps under the meteorological condition in Shanghai, have at least 15%/annual simulation energy-saving efficiency, perhaps under Pekinese's meteorological condition, have at least 6%/annual simulation energy-saving efficiency.
25. a method that is coated with construction wall, described method comprises: the described construction wall of any one in the claim 1 to 24 is applied on the described construction wall with the heat insulating coat system, thereby obtains being coated with the construction wall of described heat insulating coat system.
26. method as claimed in claim 25, wherein, described construction wall comprises following constructional materials, and described constructional materials comprises concrete block, gypsum plank, sandlime brick, gas concrete, composite light-weight scutum, cement fibrolite plate and any combination thereof.
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| CN103788778A (en) * | 2014-02-10 | 2014-05-14 | 广东华兹卜化学工业有限公司 | Antifouling and heat-insulating outer wall paint |
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| CN104673031B (en) * | 2015-02-04 | 2017-02-01 | 张泽荣 | Coating material for inorganic non-metallic or metallic surfaces |
| CN104673031A (en) * | 2015-02-04 | 2015-06-03 | 张泽荣 | Coating material for inorganic non-metallic or metallic surfaces |
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| CN105331220B (en) * | 2015-12-08 | 2017-12-12 | 上海台安实业集团有限公司 | A kind of composite metal roof insulation water-repellent paint and preparation method thereof |
| CN105331220A (en) * | 2015-12-08 | 2016-02-17 | 上海台安实业集团有限公司 | Compound-type metal roof thermal-insulation waterproof coating and preparing method thereof |
| CN106147459A (en) * | 2016-08-31 | 2016-11-23 | 常熟市优德爱涂料有限公司 | A kind of aqueous low permeability rate priming paint and preparation method thereof |
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| CN110204970A (en) * | 2019-01-21 | 2019-09-06 | 文光洲 | A kind of exterior wall reflective heat-insulation paint and preparation method thereof |
| CN112625527A (en) * | 2020-12-18 | 2021-04-09 | 成都富思特新材料有限公司 | Maintenance-free coating wallboard and preparation method thereof |
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