CN102864884B - Exterior wall automatically cleaning heat insulating coat system - Google Patents
Exterior wall automatically cleaning heat insulating coat system Download PDFInfo
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- CN102864884B CN102864884B CN201110194575.8A CN201110194575A CN102864884B CN 102864884 B CN102864884 B CN 102864884B CN 201110194575 A CN201110194575 A CN 201110194575A CN 102864884 B CN102864884 B CN 102864884B
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- 238000011105 stabilization Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
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Abstract
The present invention relates to a kind of exterior wall automatically cleaning heat insulating coat system, it is included：A hydrophobicity priming coat that () is formed by the first coating composition, wherein first coating composition includes water based emulsion, and the permeability rate of the priming coat is at most 0.3mL/24 hours；B heat reflectivity finishing coat that () is formed by the second coating composition, wherein second coating composition includes heat reflection filler, and the sun reflectivity of the finishing coat is at least 85%, and/or hemisphere transmitting ratio is at least 85%；(c) is coated in the hydrophily finishing coat formed by the 3rd coating composition on the heat reflectivity finishing coat, wherein the 3rd coating composition includes nano titanium oxide and aqueous solvent.
Description
Technical field
The present invention relates to a kind of exterior wall automatically cleaning heat insulating coat system, can be (special for metope more particularly, to one kind
It is not wall face) automatically cleaning property is provided, is reduced the heat transfer coefficient of construction wall and/or is improved the simulation energy-conservation effect of construction wall
The automatically cleaning heat insulating coat system of rate.
Background technology
At present, with economical growing, energy consumption problem is increasingly paid close attention to by people.As the big of energy resource consumption
Family, building energy consumption accounts for the 30% to 40% or so of national energy consumption every year.Therefore, building energy consumption how is reduced as all kinds of energy-conservations
Most urgent in research, most problem demanding prompt solution.
Building energy conservation is mainly reflected in two aspects：It is incubated and heat-insulated, both in order to keep indoor with suitable
Temperature and the measure taken.Insulation refers generally to enclosed structure and prevents interior in the winter time to outdoor heat transfer, and makes indoor holding appropriate
Temperature；And the heat-insulated influence for being often referred to enclosed structure in summer isolation solar radiant heat and outdoor high temperature, protect its inner surface
Hold proper temperature.In heat-insulating material, heat insulating coat or coating system are because of easy to use, good heat-insulation effect and economically feasible
The advantages of and increasingly favored by people.
In the application process of coating or coating system, pollutant present in external environment (including dust, organic contamination
Thing etc.) inevitably adhere in its surface, so as to influence its performance (for example, to reflectivity of sunshine) and outward appearance.Cause
And, stain resistance is also one of important indicator of investigation coating or coating system performance.It has been found that can be by changing coating
The water sensitivity (such as hydrophobicity) on surface improves the stain resistance of coating or coating system.Due to thinking to cause outer wall coating
The main cause of pollution is that the dust in rainwater entrainment air falls coating surface, and tiny contaminant particles are led to rainwater
The hole crossed on coating is polluted into coat inside, thus have developed a kind of hydrophobicity with lotus leaf effect already
Coating.But this hydrophobic coating effect when in face of hydrophobic organic pollutant is undesirable.
The content of the invention
Present inventor considered that, demand of the external wall in terms of heat-proof quality and anti-pollution characteristic, so that providing
A kind of exterior wall heat insulating coat system, the coating system can not only be by reducing by the heat transfer coefficient of painting wall, the reflection sun
Light energy and for exterior wall provides good heat-proof quality, and heat-reflecting surface coating table can be ensured with surface self-cleaning
Face is cleaned, so as to keep the reflection to solar energy permanently effective.
In order to meet the demand, the invention provides a kind of exterior wall automatically cleaning heat insulating coat system, it is included：
A hydrophobicity priming coat that () is formed by the first coating composition, wherein first coating composition is comprising aqueous
Latex, and the permeability rate of the priming coat is at most 0.3mL/24 hours；
B heat reflectivity finishing coat that () is formed by the second coating composition, wherein second coating composition includes heat
Reflection filler, and the sun reflectivity of the finishing coat is at least 85%, and/or hemisphere transmitting ratio is at least 85%；With
C () is coated in the hydrophily finishing coat formed by the 3rd coating composition on the heat reflectivity finishing coat,
Wherein described 3rd coating composition includes nano titanium oxide and aqueous solvent.
Present invention also offers a kind of method for being coated with exterior wall, methods described includes：By exterior wall automatically cleaning of the invention
Heat insulating coat system is applied on the wall face of the exterior wall, so as to obtain being coated with the outer of the automatically cleaning heat insulating coat system
Wall.In a specific embodiment, the exterior wall includes following construction material, and the construction material includes concrete segment, gypsum
Plate, Dinas brickes, air entrained concrete, composite light-weight scutum, cement fibrolite plate and its any combination.
Inventors have surprisingly found that, when will be comprising hydrophobicity priming coat, heat reflectivity finishing coat and hydrophily cover
After the coating system of layer is coated on the wall face of exterior wall, synergy, wherein hydrophobicity are generated between these three coatings
Priming coat can reduce outside moisture to the infiltration in wall, while the moisture that can be improved in wall is outside in the form of water vapor
Diffusion, so that the heat transfer coefficient increased with water content of wall is reduced, and heat reflectivity finishing coat can effectively reflect too
Sunlight energy, both desired heat-proof quality for exterior wall is provided；At the same time, it is arranged on the hydrophily cover on finishing coat
Layer can effectively improve the contaminated resistance of finishing coat, ensure that heat-reflecting surface coating surface is cleaned, then to sunshine
The reflection of energy keeps permanently effective.
Generally, it is considered that one or more other coatings are coated with the surface of coating can be (such as anti-to the surface property of coating
Penetrating property, configuration of surface etc.) more or less impact.However, inventors have surprisingly found that, according to the present invention, in heat reflection
Scribble hydrophily finishing coat on the surface of property finishing coat, not only the heat reflectivity of the finishing coat not by finishing coat influenceed and under
Drop, and due to there is the hydrophily finishing coat with self-cleaning performance on heat reflectivity finishing coat, even if long-term (all in full
Week, several months or even several years) it is under the environmental condition of pollution, heat reflectivity higher is still kept, thus it is of the invention by hydrophobic
Property the heat insulating coat system that is formed of priming coat and heat reflectivity finishing coat remain to keep excellent heat-proof quality.
Thus, wall face is coated with the exterior wall of the coating system, compared with the exterior wall of the uncoated coating system, heat transfer
Coefficient have dropped at least 12%.In addition or or, wall face is coated with the exterior wall of the coating system, with the uncoated coating body
The exterior wall of system is compared, the simulation energy-saving efficiency under the meteorological condition in Guangzhou with least 20%/whole year, or in the gas in Shanghai
Have at least 15% as under the conditions of/annual simulation energy-saving efficiency, or have at least 6% under Pekinese's meteorological condition/complete
The simulation energy-saving efficiency in year.
Brief description of the drawings
Fig. 1 is the schematic diagram of simulant building building enclosure.
Specific embodiment
Unless stated otherwise herein, describing term " one " used herein or " one kind " up and down of the invention should be managed
Solution is to include plural number.
Composition be described as including or comprising specific components in the case of, however not excluded that said composition is comprising other are optional
Component, and unless clearly otherwise indicated, it is contemplated that said composition also can be constituted or constituted by involved specific components, or
Method be described as including or comprising specific process step in the case of, however not excluded that the method includes other optional techniques steps
Suddenly, and unless clearly otherwise indicated, it is contemplated that the method also can be constituted or constituted by involved specific process step.
For simplicity, some number ranges are only expressly disclosed herein.However, any lower limit can be with any upper limit group
Close the scope for being formed and being not known and record；And any lower limit can form the scope for being not known and recording with other lower values, together
Any upper limit of sample can combine the scope to be formed and not yet explicitly recorded with any other upper limit.Although additionally, be not known record,
Each point or single number between endpoints of ranges are included in the range of this.Thus, each point or single number can be as certainly
The lower limit or the upper limit of body combine or combine to be formed with other lower limits or the upper limit and not yet explicitly record with any other point or single number
Scope.
The invention provides a kind of exterior wall automatically cleaning heat insulating coat system, it is included：
A hydrophobicity priming coat that () is formed by the first coating composition, wherein first coating composition is comprising aqueous
Latex, and the permeability rate of the priming coat is at most 0.3mL/24 hours；
B heat reflectivity finishing coat that () is formed by the second coating composition, wherein second coating composition includes heat
Reflection filler, and the sun reflectivity of the finishing coat is at least 85%, and/or hemisphere transmitting ratio is at least 85%；With
C () is coated in the hydrophily finishing coat formed by the 3rd coating composition on the heat reflectivity finishing coat,
Wherein described 3rd coating composition includes nano titanium oxide and aqueous solvent.
Alternatively, exterior wall automatically cleaning heat insulating coat system of the invention is also included, and is arranged on the hydrophobicity priming coat
Under the hydrophobicity putty layer formed by the 4th coating composition, the 4th coating composition include organic silicon hydrophobic agent,
And the hydrophobicity putty layer has the at most water absorption rate of 1.6g/10min.
One of the invention preferred embodiment in, the permeability rate of the priming coat is small less than or equal to 0.2mL/24
When.
It is of the invention it is another preferred embodiment in, the sun reflectivity of the finishing coat is at least 88%, and/or
Hemisphere transmitting ratio is at least 87%.
It is of the invention another preferred embodiment in, the finishing coat, when according to stain resistance test method GB/
When T9780 is determined, decline with 10% or smaller average reflectance, and/or, the finishing coat is coated by oleic acid,
And it is 2.0mW/cm in intensity2, wavelength 340nm UV light under irradiation there is 15 degree or smaller of Static Water to connect for 24 hours afterwards
Feeler.
It is of the invention it is another preferred embodiment in, the finishing coat, when according to stain resistance test method GB/
When T9780 is determined, decline with 5% or smaller average reflectance.
It is of the invention it is another preferred embodiment in, the finishing coat is coated by oleic acid, and is in intensity
2.0mW/cm2, wavelength 340nm UV light under irradiation 24 hours afterwards have 10 degree or smaller Static water contact angles.
It is of the invention it is another preferred embodiment in, the finishing coat has the dry of 0.2-2 microns of theoretical calculation
Film thickness.
It is of the invention it is another preferred embodiment in, wall face is coated with the heat transfer system of the exterior wall of the coating system
Number, compared with the heat transfer coefficient of the exterior wall of the uncoated coating system, have dropped at least 12%.
In another embodiment of the present invention, wall face is coated with the exterior wall of the coating system, described with uncoated
The exterior wall of coating system is compared, the simulation energy-saving efficiency under the meteorological condition in Guangzhou with least 20%/whole year, or upper
There is the simulation energy-saving efficiency of at least 15%/whole year under the meteorological condition in sea, or have at least under Pekinese's meteorological condition
The simulation energy-saving efficiency of 6%/whole year.
Terminology used in this article " permeability rate " is to weigh coating hydrophobicity and measuring both porosity.Specifically
Ground, permeability rate refers to, at ambient conditions, such as under room temperature (25 DEG C), atmospheric pressure, in special time period, such as in 24 hours,
Penetrate through the water of coating.In general, the permeability rate of construction wall coating is less than or equal to 0.5mL/24 hours.At this
In invention, the permeability rate of hydrophobicity priming coat is at most 0.3mL/24 hours, but can be more than or equal to 0.15mL/24 hours,
Or more than or equal to 0.1mL/24 hours.
Term " sun reflectivity " used herein refers to that object reflexes to the solar radiation flux of half spherical space and enters
Penetrate the ratio of solar radiation flux on a surface of an.In the present invention, the sun reflectivity of heat-reflecting surface coating is at least
85%.
Term " hemispherical emissivity " used herein refers to, radiation source on half direction of bowl every penetrate emittance with
The ratio of the radiant exitance of the blackbody radiation source with same temperature.In the present invention, the hemisphere transmitting of heat-reflecting surface coating
Rate is at least 85%.
Term " average reflectance " used herein refer to project on object reflected radiation can with project thing
The contaminated thing of the ratio between integrated radiant emittance on body, wherein body surface stains the decline of the average reflectance that can cause the object.
In the present invention, being reduced by up to for the average reflectance of the finishing coat that the preparation ash being made by graphite powder stains and causes is 10%,
It is even more small.
Term " Static water contact angles " used herein is for weighing measuring for coating hydrophilic (or hydrophobicity).One
As for, hydrophobic coating is characterised by, Static water contact angles be 90 ° or higher；It is quiet and hydrophilic coating is characterised by
State water contact angle is less than 90 °.In the present invention, it is in intensity by the finishing coat that the hydrophobic organic pollutants such as oleic acid pollute
2.0mW/cm2, wavelength 340nm UV light under irradiation keep less than 15 degree of Static water contact angles afterwards within 24 hours, that is, keep good
Good hydrophily.
Term " thickness of dry film of theoretical calculation " used herein is obtained by theoretical calculation rather than actual measurement
Thickness of dry film.In practice, can be by being carried out as follows theoretical calculation：
In the present invention, hydrophily finishing coat has the thickness of dry film of 0.2 to 2 micron of theoretical calculation.
Term " water absorption rate " used herein is defined as coating in the systemic water of special time period.It is general and
Speech, the water absorption rate of construction wall coating is less than 2.0g/10min.In the present invention, the exterior wall water absorption rate of hydrophobicity putty layer
It is 1.6g/10min or lower.
Term " heat transfer coefficient " used herein refers to, in the Air Temperature of the building enclosure both sides being made up of construction wall
Degree difference is under conditions of 1K, by the heat output of unit area building enclosure within the unit interval, unit is W/ (m2.K).At this
In invention, wall face is coated with the heat transfer efficiency of the exterior wall of automatically cleaning heat insulating coat system of the invention, with the uncoated painting
The exterior wall of coating systems is compared, and have dropped at least 12%.
" simulation energy-saving efficiency " mentioned in this article be based on building enclosure model and architectural exterior-protecting construction parameter by from
Typical urban Guangzhou, Shanghai and Beijing that East China, south China, North China each department are chosen are simulated and obtain.Its specific determination side
Method referring to part of detecting simulation energy-saving efficiency.In the present invention, wall face is coated with automatically cleaning heat insulating coat body of the invention
The exterior wall of system, compared with the exterior wall of the uncoated coating system, has at least 20%/whole year under the meteorological condition in Guangzhou
Simulation energy-saving efficiency, or there is the simulation energy-saving efficiency of at least 15%/whole year under the meteorological condition in Shanghai, or in Beijing
Meteorological condition under have at least 6%/annual simulation energy-saving efficiency.For example, " in the meteorological condition Imitating energy-conservation in xx areas
Efficiency is a% " refer to that under the meteorological condition in xx areas, wall face is coated with the building enclosure of automatically cleaning heat insulating coat system
The cooling in summer energy consumption of structure and the summation (annual energy consumption) of winter heating's energy consumption, with the uncoated automatically cleaning heat insulating coat system
The annual energy consumption of architectural exterior-protecting construction compare, the percentage fraction of decline, the meteorological condition in wherein xx areas can be by U.S.'s energy
The AUTHORITATIVE DATA of source portion DOE is obtained, and the meteorological file in the Guangzhou for for example being obtained by DOE is " CHN_Guangzhou_IMEC ".Tool
Body ground, can be calculated by equation below：
Wherein：
A% represents simulation energy-saving efficiency, in terms of %；
Eu represents the annual energy consumption of the building enclosure of uncoated automatically cleaning heat insulating coat system, in terms of GJ；And
Ec represents the annual energy consumption of the building enclosure for being coated with automatically cleaning heat insulating coat system, in terms of GJ.
When being used in the context as " coating is coated on surface or base material ", term " above " includes
Coating is either directly or indirectly coated on surface or base material.Thus, for example coating is coated on the priming coat on base material quite
It is coated on base material in coating.
When being used in the context as " first coating is arranged under second coating ", term " ...
Under " include first coating be located at second coating lower section and with the second coating directly contact.Thus, for example hydrophobicity putty
Layer be arranged under hydrophobicity priming coat equivalent to putty layer below priming coat and with the priming coat directly contact.
Term " colloidal sol " refers to dispersion of the particle (such as titanium dioxide nanoparticle) in liquid carrier, the liquid
Supporting agent is additional comprising water or water and the aqueous solvent and optional dispersant, pH adjusting agent of solvent formation miscible with water etc.
Additive.
Hydrophobicity priming coat
Hydrophobicity priming coat of the invention is formed by the first coating composition, wherein first coating composition includes water
Property latex.
Term " water based emulsion " used herein refers to that synthetic resin (i.e. polymer) is in particulate form in aqueous medium
The dispersion of middle formation.Therefore, in this application when being used for polymer, unless otherwise stated, term " water based emulsion "
" water-borne dispersions " can be used alternatingly.Appropriate emulsion polymerization technique is known to persons of ordinary skill in the art, and it leads to
Often comprise the following steps：Can be selected in the presence of appropriate emulsifying agent and/or dispersion stabilizer and by means of stirring, make polymerizable
Monomer is dispersed into emulsion in water, and for example triggers the polymerization of monomer by adding initiator.In the present invention, Ke Yitong
The modification of such as organo-functional group (including, but are not limited to carboxyl, hydroxyl, amino, NCO, sulfonic group etc.) is crossed to poly-
Polymer beads are modified, so as to obtain the water based emulsion of the performance (such as dispersiveness) with needed for.Therefore, in the present invention,
Term " water based emulsion " not only includes non-modified polymer beads dispersion in an aqueous medium, also including through organic official
Can the modified polymer beads of group dispersion in an aqueous medium.The size of the polymer beads in water based emulsion can pass through
Equal particle diameters of z known in the field are measured, and it refers to, using dynamic light scattering method, for example with Marvlen
The size of the particle that the microcosmic particle size analyzers of Zetasizer 3000HS are determined.In the present invention, polymer particles in water based emulsion
The equal particle diameters of z of grain are at most 200nm, preferably at most 150nm, more preferably less than 130nm, to be also more preferably less than 125nm, very
To more preferably less than 110nm or smaller.But the equal particle diameters of the z of polymer beads are preferably at least 50nm in water based emulsion, preferably
At least 80nm or bigger.
In embodiments of the present invention, the water based emulsion in first coating composition includes vinyl acetate esters water
Property latex, acrylic compounds water based emulsion, organic silicon water based emulsion, polyurethanes water based emulsion, the aqueous breast of fluoropolymers
Glue or its combination.
In another embodiment of the present invention, the water based emulsion in first coating composition includes that organosilicon is aqueous
Latex, 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, acetic acid second
Alkene ester-ethene water based emulsion, vinyl acetate-acrylate-tertiary carbonic ester (such as tertiary ethylene carbonate VeoVa 10) are aqueous
Latex or its combination.
In specific embodiment of the invention, the water based emulsion in first coating composition includes pure acrylate
The combination of water based emulsion and cinnamic acrylic ester water based emulsion.
In the film forming procedure of coating composition, the polymer beads in water based emulsion are with moisture in coating composition
Evaporate and flock together, so as to form coating.On the one hand, the coating for being formed by the first coating composition of the invention has to be dredged
Aqueous, aqueous water is less susceptible to penetrate through the coating.On the other hand, due to aqueous latex particle tool in the first coating composition
There is appropriate grain size scope, thus the coating for being formed has certain porosity, so that the vapour molecule in wall can
Spread to outside with by these holes, and with appropriate cohesive strength.If the particle diameter of water based emulsion particle is excessive, example
Such as larger than 200nm or bigger, then the coating for being formed not enough fine and close, cohesive strength is not good；And if the particle diameter of water based emulsion particle
It is too small, be, for example, less than 50nm or smaller, then cannot form the coating with porosity in surface of wall.In the present invention, by this
The coating that first coating composition of invention is formed not only has hydrophobicity, and with certain porosity so that the painting
Layer has appropriate permeability rate, such as with the permeability rate of at most 0.3mL/24 hours when being determined according to JG/T210-2007,
Preferably have less than or the permeability rate equal to 0.2mL/24 hours, but can be more than or equal to 0.15mL/24 hours, or more than or
Equal to 0.1mL/24 hours.That is, hydrophobicity priming coat of the invention reduces outside due to being thus able to hydrophobicity
To the infiltration in wall, simultaneously because have certain porosity to be thus able to improve the outside diffusion of wall steam, this makes moisture
The wall that the coating must be coated with can for a long time have low water content, so as to inhibit due to wall caused by materials for wall water suction
The increase of body thermal conductivity factor (or heat transfer coefficient), and improve human body and be coated with the indoor comfortable of the coating composition
Degree.
As described above, water-based emulsion can use appropriate emulsion polymerisation process well known to those of ordinary skill in the art
Prepare.Or, as the example of water-based emulsion, it is possible to use any appropriate commercially available product, such as cinnamic acrylic ester
Water-based emulsion, such as purchased from the RS 998A or RS 968 of Ahmedabad richness Industrial Co., Ltd.；Pure acrylate water-based emulsion, for example
The PE-2133 of PolyWell companies.
Preferably, content of the water based emulsion in the first coating composition of the invention, relative to the first coating group
The gross weight of compound, in the range of about 30 to 90 weight %.Preferably, content of the water based emulsion in the first coating composition,
It is at least about 35 weight %, more preferably at least about 40 weight %, even more preferably based on the gross weight of first coating composition
At least about 45 weight % or most preferably at least about 50 weight %.And preferably, water based emulsion is in the first coating composition
Content, it is at most about 85 weight %, preferably at most about 80 weight %, more excellent based on the gross weight of first coating composition
Elect at most about 75 weight %, still more preferably up to about 70 weight %, even more preferably at most about 65 weight % or most preferably extremely as
Many about 60 weight %.If additionally, adding extra water during the preparation of inner-wall coating composition, then the amount of extra water
The gross weight of the water-based emulsion should be counted together with unborn water in water based emulsion.
First coating composition of the invention can further include one or more filler.Terms used herein " is filled out
Material " refers to any dilatation agent suitable for coating, and it can be organic or inorganic such as particle form.To the shape of particle
Shape is not particularly limited, and it can have any appropriate shape.The average grain diameter of filler can change in a wide range, for example
Change in the range of about 10 nanometers to about 50 microns.Some fillers are gone back in addition to the dilatation agent for playing a part of coating
Property needed for assigning one or more of composition and/or the coating that is formed as said composition.For example, some fillers can assign group
Color needed for compound and the coating obtained as said composition.In this case, this filler is also referred to as " pigment ".Some
Filler can improve chemistry and/or physical property, can especially improve the engineering properties of the coating obtained by said composition.At this
In the case of kind, this filler is also referred to as " reinforcer ".
Appropriate exemplary filler for example includes kaolin, diatomite, titanium oxide, calcium carbonate, talcum, barium sulfate, silicic acid
Magnalium, silica and its any combination.In a preferred embodiment, filler can include titanium oxide, diatomite, calcium carbonate or its
Combination.
According to the present invention, the total amount of filler can change in a wide range, and for example its total amount is relative to the composition
Gross weight is for about the weight % of 10 weight % to about 55, preferably from about the weight % of 20 weight % to about 50., according to the invention it is preferred to
The amount of the filler that one coating composition is included, can be at least about 25 weight %, more excellent relative to the gross weight of the composition
Choosing at least about 30 weight %, even more preferably at least about 35 weight %., according to the invention it is preferred to the first coating composition wrapped
The amount of the filler for containing, relative to the gross weight of the composition, can be at most about 45 weight %, more preferably up to about 40 weights
Amount %.
If desired, the first coating composition of the invention is optional comprising additional additives, these additives are adversely
Ground influence coating composition or solidify coating therefrom.Appropriate additive includes for example improving the processability of composition
The specific official of energy or manufacturing property, the aesthetic feeling of enhancing composition or improvement coating composition or solidification composition filling therefrom
Those reagents of energy property or characteristic (such as to the adhesiveness of base material).The additive that can be included is supporting agent, emulsifying agent, face
Material, metal dust or lotion, filler, anti-migration aids, antiseptic, chain extender, curing agent, lubricant, coagulating agent, lubricant,
Biocide, plasticizer, crosslinking agent, defoamer, colouring agent, wax, antioxidant, anticorrosive, flow control agent, thixotroping
Agent, dispersant, adhesion promoter, UV stabilizer, 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
Influence coating composition or solidify coating therefrom.In a preferred embodiment, the first coating composition of the invention
Can comprising thickener, dispersant, defoamer, pH adjusting agent, coalescents, solvent, bactericide, mould inhibitor, coupling agent or its
Any combination is used as additional additives.
According to the present invention, the total amount of additional additives can change in a wide range, and for example its total amount is relative to described group
The gross weight of compound is the weight % of 0 weight % to about 20, preferably from about the weight % of 0.1 weight % to about 20., according to the invention it is preferred to
The amount of additional additives that is included of the first coating composition, can be at least about 0.5 relative to the gross weight of the composition
Weight %, more preferably at least about 1.0 weight %, even more preferably at least about 2.0 weight %, most preferably at least about 2.5 weight %.
, according to the invention it is preferred to the amount of additional additives that is included of the first coating composition, relative to the gross weight of the composition,
About 15 weight %, more preferably up to about 12 weight %, even more preferably at most about 10 weight %, most preferably up to can be at most
About 8.0 weight %.
To the hydrophobic regulation of coating can by those skilled in the art by known methods or treatment technology is realized,
Hydrophobic coating is for example obtained by selecting appropriate fluoropolymer resin, or by the filler to being used in coating composition
Hydrophobic treatment is carried out, for example, silane coupled treatment is carried out to filler surface, the purpose of hydrophobic coating is obtained so as to reach.At this
In first coating composition of invention, organosilicon water-based emulsion or cinnamic acrylic ester water-based emulsion are used as water-based emulsion.
In film forming procedure, the methyl-monosilane base in the hydrophobic group in polymer emulsion molecule, such as organic silicon emulsion molecule, meeting
Point to the interface of coating and air.I.e. hydrophobic group covers in coating surface in tightly packed mode, so as to form hydrophobicity
Coating.
In addition to the common method that above two obtains hydrophobic coating, can also be hydrophobic to being added in coating composition
Agent.First coating composition of the invention is included, and based on the gross weight of first coating composition, 0.5 to 2.5wt%'s has
Machine Si hydrophobic agent, to strengthen the hydrophobicity of priming coat.The example of organic silicon hydrophobic agent is available from German Wacker Chemie AG
BS-1001.
The consumption of organic silicon hydrophobic agent can be passed through by those skilled in the art according to the hydrophobicity and coating character of required coating
Normal experiment determines.Generally, the consumption of organic silicon hydrophobic agent, based on the weight of the first coating composition of the invention, about 0.5
In the range of the weight of weight % to 2.5 %.If the consumption of organosilicon is less than 0.5 weight %, raising coating cannot be played and dredged
Aqueous effect；If the consumption of organosilicon is too high, such as higher than 2.5 weight %, the coating composition containing excessive water-repelling agent
May be encountered a difficulty in coating process.
In embodiments of the present invention, first coating composition is included, based on first coating composition
Gross weight,
The water based emulsion of 30 to 90 weight %；
The filler of 10 to 55 weight %；
The additional additives of 0 to 20 weight %, wherein the additional additives include thickener, dispersant, defoamer, pH
Conditioning agent, coalescents, solvent, bactericide, mould inhibitor or its any combination.
Preferably, first coating composition is also included, based on the gross weight of first coating composition, 0.5 to 2.5
The organic silicon hydrophobic agent of weight %.
In the specific embodiment of the present invention, first coating composition is included, and is applied relative to described first
The gross weight of feed composition,
The cinnamic acrylic ester water based emulsion of 10 to 50 weight %；
The pure acrylate water based emulsion of 10 to 50 weight %；
The described filler of 10 to 55 weight %；
The organic silicon hydrophobic agent of 0.5 to 2.5 weight %；With
The additional additives of 0.1 to 15 weight %, the additional additives include water-repelling agent, thickener, dispersant,
Wetting agent, defoamer, pH adjusting agent, coalescents, solvent, bactericide, mould inhibitor, coupling agent or its any combination.
In one of the invention special specific embodiment, first coating composition is included, relative to described
The gross weight of the first coating composition,
The cinnamic acrylic ester water based emulsion of 10 to 50 weight %；
The pure acrylate water based emulsion of 10 to 50 weight %；
The filler of 10 to 55 weight %；
The organic silicon hydrophobic agent of 0.5 to 2.5 weight %
The thickener of 0.4 to 1.0 weight %；
The dispersant of 0.2 to 2.0 weight %；
The wetting agent of 0.1 to 0.5 weight %；
The defoamer of 0.2 to 0.6 weight %；
The pH adjusting agent of 0.2 to 0.6 weight %；
The coalescents of 0.5 to 2.5 weight %；
The solvent of 0.5 to 2.5 weight %；
The bactericide of 0.1 to 0.3 weight %；
The mould inhibitor of 0.1 to 0.5 weight %；With
The coupling agent of 0.1 to 0.5 weight %.
Heat reflectivity finishing coat
Heat reflectivity finishing coat of the invention is formed by the second coating composition, wherein second coating composition is included
Heat reflection filler.
Term " heat reflection filler " used herein refers to, improves coating composition filling out to the albedo of sunshine
Material.In the present invention, the sun reflectivity of the finishing coat containing heat reflection filler is at least 85%, and/or hemisphere transmitting ratio is
At least 85%, it is preferable that the sun reflectivity of this finishing coat is at least 88%, and/or hemisphere transmitting ratio is at least 87%.
In embodiments of the present invention, the heat reflection filler in second coating composition includes titanium oxide, ceramics
Microballon or its any combination.In a preferred embodiment of the invention, the heat reflection filler in the second coating composition includes pottery
The combination of porcelain microballon and titanium dioxide, and this ceramic fine bead content, relative to the gross weight of second coating composition,
In the range of 5 to 15 weight %.
Ceramic fine bead of the invention can be translucent, high intensity tiny microballon.In one embodiment, it is described
Ceramic fine bead can be silicate ceramics microballon, preferably aluminum silicate ceramic microballon, more specifically alkaline silicate aluminum ceramic microspheres.
The average grain diameter of ceramic fine bead, such as D50, can change in a wide range, such as preferably in the range of about 1 to about 50 micron
Change, changes more preferably in the range of about 3 to about 45 microns.
In one embodiment, the ceramic fine bead can include solid ceramic microbeads, hollow ceramic microballon or its group
Close.In a preferred embodiment, the ceramic fine bead includes average grain diameter (D50) reality in about 3 microns to about 10 micrometer ranges
Heart ceramic fine bead.In another preferred embodiment, the ceramic fine bead includes average grain diameter (D50) at about 10 to about 50 microns
In the range of hollow ceramic microballon.
As the example of ceramic fine bead, it is possible to use any appropriate commercially available product, such as using purchased from 3M
The Zeeospheres of Corporation, USTMW-610 solid ceramic microbeads or purchased from Guangzhou Lian Jie trade Co., Ltds
LJTF-01 hollow ceramic microspheres.
Titanium dioxide of the invention is conventional to prepare reflection type thermal insulation coating composition filler in paint field.One
In individual implementation method, the titanium dioxide can be rutile titanium dioxide.
As the example of titanium dioxide, it is possible to use any appropriate commercially available product, such as using purchased from E.I.Du Pont Company
R706 rutile titanium white powder.
According to the present invention, the content of heat reflection filler, relative to the gross weight of second coating composition, in about 20 weights
In the range of amount % to about 40 weight %, preferably in the range of the weight % of about 20 weight % to about 30.Preferably, heat reflection is filled out
In material, the content of ceramic fine bead, relative to the gross weight of second coating composition, in the range of about 5 to 10 weight %.
Inventors have surprisingly found that, the second coating composition of the invention when contain 20 to 40wt% by rutile dioxy
When changing the heat reflection filler that titanium and ceramic fine bead are constituted, can be formed with the reflexive coating of excellent heat.Additionally, the present inventor
It has also been found that, combination of the heat reflection filler comprising hollow ceramic microspheres and solid ceramic microbeads can be substantially reduced as heat reflection filler
Ceramic fine bead consumption, without damage coating heat reflectivity.
Be not intended to be entangled in any theory, the present inventor it could be theoretically argued that：Formed in the coating of the second coating composition
During, the ceramic fine bead included in composition is often moved on coating surface so as to form the surface rich in ceramic fine bead
Layer, this can improve the surface nature of coating, such as increase the heat reflectivity on surface.
In addition to the heat reflection filler such as ceramic fine bead, titanium dioxide, mixing the second coating composition of the invention can be with
Comprising any other fillers being suitably employed in coating composition.Hereafter, for the ease of discussing, in incorporation inner-wall coating composition
Other fillers in addition to heat reflection filler ceramic fine bead be referred to as " additional filler ".Appropriate exemplary additional filler is for example
Including kaolin, diatomite, calcium carbonate, talcum, barium sulfate, aluminium-magnesium silicate, silica and its any combination.In the side of being preferable to carry out
In formula, filler can include kaolin, diatomite, calcium carbonate or its combination.
In the present invention, the consumption of the additional filler can as needed be determined by those skilled in the art.Preferably,
Two coating compositions are included, relative to the gross weight of second coating composition, the additional filler of 1 to 30 weight %.
Second coating composition of the invention further includes water based emulsion.The water based emulsion can have and foregoing the
The same or similar composition of water based emulsion being related in one coating composition is but it is also possible to be different water based emulsions.Preferably,
Water based emulsion in second coating composition is same or like with water based emulsion in the first coating composition, is beneficial to painting interlayer
Adhesion.
In embodiments of the present invention, the water based emulsion in second coating composition includes the aqueous breast of organosilicon
Glue, cinnamic acrylic ester water based emulsion, pure acrylate water based emulsion, organic-silicon-modified acrylic ester aquosity latex, vinegar
Vinyl acetate water based emulsion, vinyl acetate-acrylate water based emulsion, vinylacetate-ethylene water based emulsion, ethene-vinegar
Vinyl acetate water based emulsion, vinyl acetate-acrylate-tertiary carbonic ester (such as tertiary ethylene carbonate VeoVa) water based emulsion
Or its combination.
As described in hydrophobicity primary coat layer segment, water-based emulsion can be using well known to those of ordinary skill in the art appropriate
Emulsion polymerisation process prepare.Or, as the example of water-based emulsion, it is possible to use any appropriate commercially available product, such as
The GD56 of pure acrylate water-based emulsion, such as Henkel Corp..
Preferably, content of the water based emulsion in the second coating composition of the invention, relative to the second coating group
The gross weight of compound, in the range of about 30 to 78 weight %.Preferably, content of the water based emulsion in the second coating composition,
It is at least about 35 weight %, more preferably at least about 40 weight %, even more preferably based on the gross weight of second coating composition
At least about 45 weight % or most preferably at least about 50 weight %.And preferably, water based emulsion is in the second coating composition
Content, based on the gross weight of second coating composition, at most about 75 weight %, more preferably up to about 70 weight %, even
More preferably up to about 65 weight % or most preferably at most about 60 weight %.If additionally, added during the preparation of coating composition
Plus extra water, then the amount of extra water should count the water-based emulsion together with unborn water in water based emulsion
Gross weight.
If desired, the second coating composition of the invention is optional comprising additional additives, these additives are adversely
Ground influence coating composition or solidify coating therefrom.Appropriate additive includes for example improving the processability of composition
The specific official of energy or manufacturing property, the aesthetic feeling of enhancing composition or improvement coating composition or solidification composition filling therefrom
Those reagents of energy property or characteristic (such as to the adhesiveness of base material).The additive that can be included is supporting agent, emulsifying agent, face
Material, metal dust or lotion, filler, anti-migration aids, antiseptic, chain extender, curing agent, lubricant, coagulating agent, lubricant,
Biocide, plasticizer, crosslinking agent, defoamer, colouring agent, wax, antioxidant, anticorrosive, flow control agent, thixotroping
Agent, dispersant, adhesion promoter, UV stabilizer, 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
Influence coating composition or solidify coating therefrom.In a preferred embodiment, the second coating composition of the invention
Can comprising additional filler, thickener, dispersant, defoamer, pH adjusting agent, coalescents, solvent, bactericide, mould inhibitor or
Its any combination is used as additional additives.The species of the additive in the additional additives in addition to additional filler is dredged with above-mentioned
The additional additives used in water-borne base coat are similar to.Additionally, the consumption of these additives can by those skilled in the art according to
It needs to be determined that.
In embodiments of the present invention, second coating composition is included, based on second coating composition
Gross weight,
The water based emulsion of 30 to 80 weight %；
The heat reflection filler of 20 to 40 weight %；
The additional additives of 0 to 40 weight %, wherein the additional additives include additional filler, thickener, dispersant,
Defoamer, pH adjusting agent, coalescents, solvent, bactericide, mould inhibitor, coupling agent or its any combination.
In the specific embodiment of the present invention, second coating composition is included, based on second coating
The gross weight of composition,
The pure acrylate water based emulsion of 30 to 78 weight %；
The heat reflection filler of 20 to 40 weight %, the heat reflectivity filler includes solid ceramic microbeads, hollow pottery
Porcelain microballon, titanium dioxide or its combination；With
The additional additives of 0.1 to 40 weight %, the additional additives include additional filler, thickener, dispersion
Agent, defoamer, pH adjusting agent, coalescents, solvent, bactericide, mould inhibitor, coupling agent or its any combination.
In one of the invention special specific embodiment, second coating composition is included, relative to described
The gross weight of two coating compositions,
The pure acrylate water based emulsion of 30 to 70 weight %；
The heat reflection filler of 20 to 40 weight %, the heat reflectivity filler includes solid ceramic microbeads, hollow pottery
Porcelain microballon, titanium dioxide or its combination；
The additional filler of 1 to 30 weight %；
The thickener of 0.4 to 2.0 weight %；
The dispersant of 0.2 to 1.0 weight %；
The defoamer of 0.2 to 2.0 weight %；
The pH adjusting agent of 0.1 to 0.3 weight %；
The coalescents of 0 to 2.0 weight %；
The solvent of 0 to 2.0 weight %；
The bactericide of 0.1 to 0.3 weight %；
The mould inhibitor of 0.1 to 0.5 weight %；With
The coupling agent of 0.1 to 0.5 weight %.
Hydrophily finishing coat
Hydrophily finishing coat of the invention is formed by the 3rd coating composition, and is arranged on heat reflectivity of the invention
On finishing coat, wherein the 3rd coating composition includes nano titanium oxide and aqueous solvent.
Term " nano titanium oxide " used herein refers to, the titanium dioxide with nano-scale, such as particle diameter D50
Titanium dioxide in the range of 1 to 500nm, in the range of preferably 5 to 200nm, in the range of more preferably 10 to 150nm.
Term " aqueous solvent " used herein refers to, water and with the enough miscible various solvents of water energy, including, but do not limit
In water, alcohols solvent, ketones solvent, amide solvent etc. for example can be water；Methyl alcohol, ethanol, propyl alcohol, butanol；Acetone,
Butanone, methyl ethyl ketone；Dimethylformamide, dimethylacetylamide and combinations thereof.Preferably, aqueous solvent is water.In order to
Accelerate the rate of drying of coating composition, it is possible to use water and the mixture with the enough miscible solvents of water energy, such as water and ethanol
The combination of combination, water and acetone, etc..Those skilled in the art can determine the group of solvent mixed above by simple experiment
Into and ratio, so as to obtain the rate of drying of appropriate coating composition.
In the present invention, nano titanium oxide can form colloidal sol in aqueous solvent (such as water), such as be formed in room
The lower colloidal sol with 1.0 to 50.0mPa.s viscosity of temperature, i.e. the 3rd coating composition can be applied with solation.
In the present invention, the finishing coat containing nano titanium oxide not only has excellent hydrophily, and with excellent
Light (such as UV light) catalysis activity.In embodiments of the present invention, the finishing coat, when according to stain resistance test method
When GB/T9780 is determined, decline with 10% or smaller, preferably 5% or smaller average reflectance；And/or, the cover
Surface layer is coated by oleic acid, and is 2.0mW/cm in intensity2, wavelength 340nm UV light under irradiation 24 hours afterwards have 15
Degree or smaller, preferably 10 degree or smaller Static water contact angles.
Additionally, in the present invention, the finishing coat of the titanium dioxide granule containing nanoscale has 0.2 to 2 micron of reason
It is substantially transparent by the thickness of dry film for calculating, thus surface property to heat reflectivity finishing coat below will not make
Into any influence.In embodiments of the present invention, the heat reflectivity finishing coat of hydrophily finishing coat is coated with its surface
Sun reflectivity is at least 88%, and/or hemisphere transmitting ratio is at least 87%.
Although being not intended to be entangled in any theory, it is believed that the nanometer two being included in finishing coat of the present invention
Titanium oxide can form surface oxygen vacancies, and these surface oxygen vacancies by chemically or physically adsorbing after the radiation of UV light
Moisture in effect absorption air, so as to form hydrophilic surface, thus, its surface is difficult contaminated thing (including inorganic pollution
Thing and organic pollution) attachment.Even if the surface attachment of hydrophily finishing coat organic pollution (such as oleic acid), the pollutant
Also can be decomposed by the photocatalysis of nano titanium oxide, so as to realize the self-cleaning surface of finishing coat.
As the example in the source of nano titanium oxide, it is possible to use any appropriate commercially available product, purchase is such as used
From the nano titanium oxide complex sol SL101 of name paddy science and technology, its solid content is in the range of 0.1 to 5 weight %.
In embodiments of the present invention, the nano titanium oxide containing in the 3rd coating composition of the invention
Amount, relative to the gross weight of the 3rd coating composition, in the range of about 0.05 to 20 weight %.Preferably, nano titanium oxide
Content in the 3rd coating composition, based on the gross weight of the 3rd coating composition, is at least 0.06 weight %, is at least
0.1 weight %, be at least 1 weight %, be at least about 1.5 weight %, more preferably at least about 2 weight %, even more desirably at least
About 2.5 weight %.And preferably, content of the nano titanium oxide in the 3rd coating composition, based on the 3rd coating
The gross weight of composition, at most about 15 weight %, more preferably up to about 10 weight %, even more preferably at most about 8 weight %.To the greatest extent
The pipe bound of nano titanium oxide consumption defined above, but the consumption is not limited thereto.Those skilled in the art can
To determine the consumption of appropriate nano titanium oxide by normal experiment according to actual needs, for example, reduce nano titanium oxide
Consumption is reducing production cost, or increases the consumption of nano titanium oxide and urged with improving the hydrophily and light of hydrophily finishing coat
Change activity.
In embodiments of the present invention, content of the aqueous solvent in the 3rd coating composition of the invention, phase
For the gross weight of the 3rd coating composition, in the range of about 60 to 99.95 weight %.Preferably, aqueous solvent is applied the 3rd
Content in feed composition, is at least about 65 weight %, more preferably at least about 70 based on the gross weight of the 3rd coating composition
Weight %, even more preferably at least about 80 weight %.Likewise, the consumption of aqueous solvent is also not limited thereto.This area skill
Art personnel can determine the consumption of aqueous solvent by normal experiment according to actual needs, to obtain the nano titanium oxide of stabilization
Colloidal sol in aqueous solvent.
If desired, the 3rd coating composition of the invention is optional comprising additional additives, these additives are adversely
Ground influence coating composition or solidify coating therefrom.Appropriate additive includes for example improving the processability of composition
The specific official of energy or manufacturing property, the aesthetic feeling of enhancing composition or improvement coating composition or solidification composition filling therefrom
Those reagents of energy property or characteristic (such as to the adhesiveness of base material).The additive that can be included is emulsifying agent, pigment, metal
Powder or lotion, filler, anti-migration aids, antiseptic, chain extender, curing agent, lubricant, coagulating agent, lubricant, biocidal
Agent, plasticizer, crosslinking agent, defoamer, stabilizer, colouring agent, wax, antioxidant, anticorrosive, flow control agent, thixotropic agent,
Dispersant, adhesion promoter, UV stabilizer, scavenger, thickener, defoamer, pH adjusting agent, coalescents, solvent or its group
Close.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 influence
Coating composition or solidify coating therefrom.In a preferred embodiment, the 3rd coating composition of the invention can be with
Comprising dispersant, pH adjusting agent, stabilizer, defoamer, coalescents, bactericide, mould inhibitor and its any combination as additional
Additive.Additionally, the consumption of these additives can as needed be determined by those skilled in the art.
In embodiments of the present invention, the 3rd coating composition can be by being obtained as below：By the nanometer of high solids content
TiO 2 sol (such as purchased from the nano titanium oxide complex sol SL101 of name paddy science and technology) and extra aqueous solvent, attached
Doping (stabilizer, defoamer) etc. mixes, and has the 3rd coating group for expecting nanometer titanium dioxide Ti content to obtain
Compound；Or can be by the nano titanium dioxide powder of appropriate amount and aqueous solvent, additional additives (such as stabilizer, froth breaking
Agent) etc. mixing, with obtain have expect nanometer titanium dioxide Ti content the 3rd coating composition.
In embodiments of the present invention, the 3rd coating composition is included, based on the 3rd coating composition
Gross weight,
The nano titanium oxide of 0.05 to 20 weight %；
The aqueous solvent of 60 to 99.95 weight %；
The additional additives of 0 to 20 weight %, the additional additives include dispersant, defoamer, stabilizer, pH regulations
Agent, coalescents, bactericide, mould inhibitor or its any combination.
In the specific embodiment of the present invention, the 3rd coating composition is included, and is applied relative to the described 3rd
The gross weight of feed composition,
The nano titanium oxide of 0.05 to 20 weight %；
The aqueous solvent of 60 to 99 weight %；
The dispersant of 0.5 to 2.0 weight %；
The pH adjusting agent of 0.2 to 1.0 weight %；
The stabilizer of 0.1 to 1.0 weight %；With
The defoamer of 0.1 to 1.0 weight %.
In embodiments of the present invention, hydrophily finishing coat is arranged on heat reflectivity finishing coat, because it is
The bright heat reflectivity without negatively affecting heat reflectivity finishing coat, and due to self-cleaning performance, thus thereon
The heat reflectivity finishing coat of the hydrophily finishing coat is provided with, even if long-term (such as several weeks, several months or even several years) is in outside
Under environmental condition, heat reflectivity higher can be still kept, thus of the invention applied comprising hydrophobicity priming coat and heat reflectivity face
The heat insulating coat system of layer remains to keep excellent heat-proof quality.
Hydrophobicity putty layer
Hydrophobicity putty layer of the invention is formed by the 4th coating composition, and as conventional putty layer, is set
Put under hydrophobicity priming coat of the invention and be applied on base material, wherein the 4th coating composition is comprising organic
Si hydrophobic agent.
Term " organic silicon hydrophobic agent " used herein refers to, with silane functional and for coating composition is provided
Hydrophobic reagent.In the present invention, organic silicon hydrophobic agent refers to the redispersible silylation water-repelling agent with high activity, its
Lasting chemical bond is formed with splendid whipping performance and cement bonding agent, and can be taken with organic polymer rubber powder
With using.When organic silicon hydrophobic agent of the invention and finished ground cement and organic polymer rubber powder are used cooperatively, formed
Hydrophobicity putty layer has good hydrophobic performance, such as with 1.6g/10min or lower water absorption rate, well below building
Standard of the water absorption rate of defined less than 2.0g/10min in the professional standard of exterior wall putty.
In the present invention, because the hydrophobicity putty layer that the 4th coating composition comprising organic silicon hydrophobic agent is formed has
Hydrophobic micropore, thus reduce putty layer in itself and be coated with the water absorption rate of the exterior wall of the putty layer, while in exterior wall
Steam, constantly to air evaporation, is caused so as to inhibit by these hydrophobic micropores due to the construction material water suction of exterior wall
Wall thermal conductivity (or heat transfer coefficient) increase, improve energy-saving efficiency, and improve human body and be coated with the coating
The indoor comfort level of composition.
As the example of organic silicon hydrophobic agent, it is possible to use any appropriate commercially available product, such as purchased from Aksu promise
The organosilicon moisture repellent SEAL 80 of Bell Co..
Preferably, content of the organic silicon hydrophobic agent in the 4th coating composition of the invention, applies relative to the 4th
The gross weight of feed composition, in the range of about 0.1 to 10wt%.Preferably, organic silicon hydrophobic agent is in the 4th coating composition
Content, be at least about 0.2 weight %, at least about 0.3 weight %, at least about based on the gross weight of the 4th coating composition
0.5 weight %, at least about 1 weight %.And preferably, content of the organic silicon hydrophobic agent in the 4th coating composition is based on
The gross weight of the 4th coating composition, at most 9 weight %, preferably at most 8 weight %, more preferably up to 5 weight %.
Although the bound of organic silicon hydrophobic agent consumption defined above, the consumption is not limited thereto.Organic silicon hydrophobic agent
Consumption can be determined by normal experiment according to actual needs by those skilled in the art.
4th coating composition of the invention further includes binding agent." binding agent " refers to make painting herein
Each component (including but not limited to filler) even adhesion in feed composition is together and to assign the certain cohesion of coating composition strong
The material of degree.In the present invention, binding agent includes finished ground cement and organic polymer combination.
In embodiments of the present invention, the finished ground cement in binding agent includes well known to those of ordinary skill in the art
The finished ground cement of the labels such as the finished ground cement of various labels, 225#, 325#, 425#, 525#.Although being enumerated above cement
The species of powder, but the invention is not limited in this.Those skilled in the art can according to actual needs use variety classes
Finished ground cement.
In the present invention, the binding agent in the 4th coating composition also includes organic polymer, so that for putty layer is provided
Excellent pliability, and further improve the 4th coating composition adhesive property and cohesion.In embodiments of the present invention
In, organic polymer includes ethylene-vinyl acetate emulsion powder, Acrylic emulsion powder and combinations thereof.Of the invention
In preferred embodiment, organic polymer includes redispersible ethylene-vinyl acetate emulsion powder.
Above-mentioned emulsion powder can be prepared using appropriate emulsion polymerisation process well known to those of ordinary skill in the art
And be dried to obtain.Or, as the example of emulsion powder, it is possible to use any appropriate commercially available product.For example, as second
The example of alkene-vinyl acetate latex powder, it is possible to use EVA latex powders 60W, MP2050 of Akzo Nobel N.V.,
FX2350 etc..
In the present invention, the finished ground cement in binding agent can be by those skilled in the art according to normal with the ratio of emulsion powder
Rule experiment determines.
Preferably, content of the binding agent in the 4th coating composition of the invention, relative to the 4th Coating material composition
The gross weight of thing, in the range of about 20 to 40 weight %.Preferably, content of the binding agent in the 4th coating composition, is based on
The gross weight of the 4th coating composition, is at least about 22 weight %, more preferably at least about 25 weight %, even more desirably at least
About 28 weight % or most preferably at least about 30 weight %.And preferably, content of the binding agent in the 4th coating composition, base
In the gross weight of the 4th coating composition, at most about 38 weight %, more preferably up to about 35 weight % or most preferably at most
About 34 weight %.
4th coating composition of the invention can further include one or more filler.Described filler has and first
The same or similar composition of coating composition.Preferably, described filler includes quartz sand, calcium carbonate and combinations thereof.
According to the present invention, the total amount of filler can change in a wide range, and such as its total amount is relative to the 4th coating
The gross weight of composition is for about the weight % of 40 weight % to about 78, preferably from about the weight % of 45 weight % to about 70.According to the present invention,
The amount of the filler that preferred 4th coating composition is included, can be at least about 48 weights relative to the gross weight of the composition
Amount %, more preferably at least about 50 weight %, even more preferably at least about 55 weight %., according to the invention it is preferred to the 4th coating
The amount of the filler that composition is included, relative to the gross weight of the composition, can be at most about 68 weight %, more preferably up to
About 66 weight %.
If desired, the 4th coating composition of the invention is optional comprising additional additives, these additives are adversely
Ground influence coating composition or solidify coating therefrom.Appropriate additive includes for example improving the processability of composition
The particular functional property or characteristic of energy or manufacturing property or improvement coating composition or solidification composition filling therefrom are (such as
To the adhesiveness of base material) those reagents.The additive that can be included be emulsifying agent, pigment, metal dust or lotion, filler,
Anti-migration aids, antiseptic, chain extender, curing agent, lubricant, coagulating agent, lubricant, biocide, plasticizer, crosslinking
Agent, defoamer, colouring agent, wax, antioxidant, preservative, flow control agent, thixotropic agent, dispersant, adhesion promoter, UV are steady
Determine agent, scavenger, thickener, water-loss reducer, defoamer, pH adjusting agent, coalescents, antifreeze, slipping agent, water reducer, 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 is adversely
Ground influence coating composition or solidify coating therefrom.In a preferred embodiment, the 4th Coating material composition of the invention
Thing can be comprising thickener, water-loss reducer, preservative, antifreeze, slipping agent, water reducer and its any combination as additional addition
Agent.Additionally, the consumption of these additives can as needed be determined by those skilled in the art.
In embodiments of the present invention, the 4th coating composition is included, based on the 4th coating composition
Gross weight,
The binding agent of 20 to 40wt%, the binding agent includes finished ground cement and organic polymer；
The filler of 40 to 78wt%；
The organic silicon hydrophobic agent of 0.1 to 10wt%；With
The additional additives of 0 to 10wt%, the additional additives include thickener, water-loss reducer, preservative, antifreeze,
Slipping agent, water reducer or its any combination.
In the specific embodiment of the present invention, the 4th coating composition is included, and is applied relative to the described 4th
The gross weight of feed composition,
The binding agent of 20 to 40wt%, the binding agent includes finished ground cement and organic polymer；
The filler of 40 to 78wt%；
The organic silicon hydrophobic agent of 0.1 to 10wt%；With
The thickener of 0.1 to 2.0wt%.
In the present invention, coating composition can include thickener.Appropriate thickener include cellulose ethers thickener,
The thickener of resistance to salt, starch ethers thickener, alkali swelling type thickener, polyurethane-type thickener, the non-polyurethane of hydrophobically modified
Type thickener or its any combination.All types of thickeners are all commercially available commodity.For example, being thickened as cellulose ethers
The example of agent, it is possible to use purchased from the methyl hydroxyethylcellulose ethers thickener HEC of U.S. Aqualon Company
250HBR；Or purchased from the lignocellulosic ZZC500 of German JRS companies.As the thickener of resistance to salt, it is possible to use purchased from the U.S.
The HCMC 75000S of Tao Shi chemical industry.As starch ethers thickener, it is possible to use purchased from the Casucol 301 of Dutch Ai Weibei.
As the example of alkali swelling type thickener, it is possible to use purchased from the TT935 of Rohm＆Haas companies of the U.S. or using purchased from Coatex
The Rheotech 3500 of company.As the example of polyurethane-type thickener, it is possible to use limited purchased from upper nautical mile specialization industry science skill
The RHEOLATE 278 of company.
In a preferred embodiment, first coating composition, relative to the gross weight of the composition, comprising about 0.4
The thickener of the weight % of weight % to about 1.0.In another preferred embodiment, second coating composition, relative to institute
The gross weight of composition is stated, the thickener comprising the weight % of about 0.4 weight % to about 2.0.In another preferred embodiment, institute
The 4th coating composition is stated, relative to the gross weight of the composition, the thickener comprising 0.1 to 2.0 weight %.
In the present invention, coating composition can include dispersant.Appropriate dispersant can include anionic dispersion
Agent, cationic dispersing agent, non-ionic dispersing agent, amphoteric dispersant or its any combination.All types of dispersants are all
Commercially available commodity.In a preferred embodiment, appropriate dispersant includes polyacrylic acid dipersant, polymethylacrylic acid
Dipersant, polycarboxylate salt dispersant or its any combination.As the example of polyacrylic acid dipersant, it is possible to use purchased from U.S.
The polyacrylic acid dipersant 731A of Rohm＆Haas companies of state, or the polyacrylate purchased from LG-DOW chemical industry can be used
Dispersant 120V.
In a preferred embodiment, first coating composition, relative to the gross weight of the coating composition, comprising about
The dispersant of the weight % of 0.2 weight % to about 2.0.In another preferred embodiment, second coating composition, relatively
In the gross weight of the coating composition, the dispersant comprising the weight % of about 0.2 weight % to about 1.0.In another preferred implementation
In mode, the 3rd coating composition, relative to the gross weight of the coating composition, comprising about 0.5 weights of weight % to 2.0
Measure the dispersant of %.
In the present invention, coating composition can include wetting agent.Appropriate wetting agent is commercially available commodity, is such as purchased
From the CF-10 of LG-DOW chemical industry.
In the present invention, coating composition can include defoamer.Appropriate defoamer includes organosiloxane class froth breaking
Agent, grease type defoamer, polyethers defoamer, polyether-modified organic silicon defoamer or its any combination.It is all types of
Defoamer is all commercially available commodity.As the example of organosiloxane class defoamer, it is possible to use purchased from Japanese Nuo Puke's
SN154.As the example of grease type defoamer, it is possible to use purchased from the 122NS of Japanese Nuo Puke.
In a preferred embodiment, first coating composition, relative to the gross weight of the coating composition, comprising about
The defoamer of the weight % of 0.2 weight % to about 0.6.In another preferred embodiment, second coating composition, relatively
In the gross weight of the coating composition, the defoamer comprising 0.2 to 2.0 weight %.In another preferred embodiment, it is described
3rd coating composition, relative to the gross weight of the coating composition, the froth breaking comprising the weight % of about 0.1 weight % to about 1.0
Agent.
In the present invention, coating composition can include pH adjusting agent.Appropriate pH adjusting agent includes inorganic pH adjusting agent,
Such as natrium carbonicum calcinatum, NaOH, potassium hydroxide, sodium acid carbonate, hydramine, ammoniacal liquor, triethylamine, or organic pH adjusting agent,
Such as organosilicon pH adjusting agent.In a preferred embodiment, pH adjusting agent includes organosilicon pH adjusting agent BS-16.
In a preferred embodiment, first coating composition or the second coating composition, relative to the coating
The gross weight of composition, can include about the pH adjusting agent of 0.2 to about 0.6 weight %.In another preferred embodiment, it is described
3rd coating composition, relative to the gross weight of the coating composition, the pH adjusting agent comprising about 0.2 to about 1.0 weight %.
In the present invention, coating composition includes coalescents.Appropriate coalescents include dodecane alcohol ester.
In a preferred embodiment, first coating composition, relative to the gross weight of the coating composition, bag
Coalescents containing about 0.5 to about 2.5 weight %.In another preferred embodiment, second coating composition, relatively
In the gross weight of the coating composition, the coalescents comprising 0 to 2.0 weight %.
In the present invention, coating composition can include solvent.Appropriate solvent include alcohols solvent, ketones solvent or its
Combination.As the example of alcohols solvent, it is possible to use general industry product propane diols, ethylene glycol.
In a preferred embodiment, first coating composition, relative to the gross weight of the coating composition, comprising
The solvent of about 0.5 to 2.5 weight %.In another preferred embodiment, second coating composition, relative to the painting
The gross weight of feed composition, the solvent comprising about 0 to 2.0 weight %.
In the present invention, coating composition can include bactericide.Appropriate bactericide includes quaternary ammonium salt bactericide, contains
Chlorbenside microbial inoculum, peroxide bactericide, oxazoline series bactericidal agent, aldehydes bactericide or its arbitrary composition.All types of sterilizations
Agent is all commercially available commodity.For example, as the example of oxazoline series bactericidal agent, it is possible to use purchased from Chinese Ou Mo companies
BIT20.Or as the example of bactericide, it is possible to use purchased from the A203 of Guangzhou Tian Chen microorganisms Co., Ltd.
In a preferred embodiment, first coating composition or second coating composition, relative to described
The gross weight of coating composition, can include about the bactericide of 0.1 to about 0.3 weight %.
In the present invention, coating composition can include mould inhibitor.Appropriate mould inhibitor includes phenols mould inhibitor, chlorophenols
Mould inhibitor, esters 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 are all commercially available commodity.For example, as the example of bactericide, it is possible to use W350,
Or the FA39 purchased from Singapore PCTS can be used
In a preferred embodiment, first coating composition or second coating composition, relative to described
The gross weight of coating composition, can include about the mould inhibitor of 0.1 to about 0.5 weight %.
In the present invention, coating composition can include coupling agent.Appropriate coupling agent includes silane coupler.For example,
As the example of silane coupler, it is possible to use purchased from the WD60 of Beijing An Tenapu companies.
In a preferred embodiment, first coating composition or second coating composition, relative to described
The gross weight of coating composition, can include about the coupling agent of 0.1 to 0.5 weight %.
In the present invention, coating composition can include stabilizer.Any appropriate stabilizer is all commercially available.As
The example of stabilizer, it is possible to use purchased from the sub- freeze thawing resistance stabilizer FT-100 in U.S. sieve ground.
In a preferred embodiment, the 3rd coating composition, relative to the gross weight of the coating composition, bag
Stabilizer containing about 0.1 to 1.0 weight %.In the present invention, the preparation of coating composition can use ordinary skill
Any appropriate mixed method known to personnel is realized.For example coating composition can could be made by：By all groups
Divide and be all added in container, be then stirred until homogeneous gained mixture.Or coating composition can could be made by：
Constituent part is first mixed, remaining other components are then added again, so as to form uniform mixture.
In a preferred embodiment of the invention, the first coating group of hydrophobicity priming coat and heat reflectivity finishing coat is formed
Compound and the second coating composition could be made by：Part additional additives are mixed with filler, aqueous breast is then added again
Liquid and remaining additional additives, so as to form uniform mixture.In a preferred embodiment of the invention, form hydrophilic
Property finishing coat and hydrophobicity putty layer the 3rd coating composition and the 4th coating composition by by whole components put into mix
It is in container and well mixed and be made.
Coating composition of the invention can be by conventional method sequential application known to persons of ordinary skill in the art.Example
Such as, coating composition can be coated by spray gun, roller, scraper or brushing.
In the present invention, the automatically cleaning heat insulating coat system comprising priming coat, finishing coat and finishing coat or comprising putty
The automatically cleaning heat insulating coat system of layer, priming coat, finishing coat and finishing coat can be coated on various construction walls, built with improving
The heat-proof quality and contaminated resistance of walling body.In a specific embodiment, the construction wall includes following construction material, institute
Construction material is stated including concrete segment, plasterboard, Dinas brickes, air entrained concrete, composite light-weight scutum, cement fibrolite plate and its is appointed
Meaning combination.
Describe the present invention in detail by the following examples.However, the present invention is not limited to these embodiments.
Embodiment
Part of detecting
Permeability rateRegulation in building industry professional standard JG/T 210-2007 is carried out.
Sun reflectivityThe regulation of the method 210 in GJB GJB 2502-1996 is carried out.
Hemispherical emissivityThe regulation of the method 310 in GJB GJB 2502-1996 is carried out.
Average reflectance declinesRegulation in standard GB/T/T 9780-2005 is carried out
Static water contact anglesIt is following to determine：On the instruments of Dataphysics OCA 30, by the use of deionized water as test
Liquid, (~21 DEG C) measure Static water contact angles at room temperature, and are surveyed by three differences on each sample surfaces
The average value of numerical quantity determines.
Water absorption rateRegulation in building industry professional standard JG/T157-2009 is carried out.
Heat transfer coefficientAccording to standard GB/T/T 23483-2009《Building exterior-protected and heating
Quantity measuring method》In regulation carry out.
Simulation energy-saving efficiencyBased on following building maintenance structures and architectural exterior-protecting construction parameter is safeguarded, using USDOE
Exploitation simulation of energy consumption software Energyplus (http://www.eere.energy.gov/buildings/ envergyplus/) carry out, wherein AUTHORITATIVE DATA of the meteorological data in each city from DOE (USDOE).Specific choosing
The city for taking such as table 1 below：
District Representative's urban meteorological file
East China Shanghai CHN_Shanghai_SWERA
South China Guangzhou CHN_Guangzhou_IWEC
North China Beijing CHN_Beijing_SWERA
The structure of architectural exterior-protecting construction is as follows：The building is 2 layers, and 100 square metres, 3.2 meters of floor height, main body court are accumulated per aspect
To being south orientation.East, west, south orientation are provided with horizontal external sunshade.Window-wall ratio is 0.25.Concrete structure is referring to accompanying drawing 1.
Design of Retaining Structure parameter used in simulation process：
Exterior wall Class1 (heat transfer coefficient k=0.857w/m2.K)
Exterior wall type 2 (heat transfer coefficient k=1.413w/m2.K)
Exterior wall type 3 (heat transfer coefficient k=2.120w/m2.K)
Exterior wall type 4 (heat transfer coefficient k=1.242w/m2.K)
Exterior wall type 5 (heat transfer coefficient k=0.973w/m2.K)
Interior wall (heat transfer coefficient k=1.99w/m2.K)
Exterior window (6+13+6) (heat transfer coefficient k=2.4w/m2.K)
Roof (heat transfer coefficient k=0.69w/m2.K)
Ground (heat transfer coefficient k=0.46w/m2.K)
Indoor design：Winter：18℃
Summer：26℃
Putty layer
The raw material included in the 4th coating composition for forming putty layer is listed in as in table 1 below.
Table 1
| Trade name | Supplier/retailer | Description |
| 42.5 cement | General industry product | Binding agent |
| 200 mesh quartz sands | General industry product | Filler |
| 325 mesh powdered whitings | General industry product | Filler |
| FX 2350 | Akzo Nobel N.V. | Ethylene-vinyl acetate binding agent |
| HPMC 75000S | LG-DOW chemical industry | Cellulose thickener |
| Casucol 301 | Dutch Ai Weibei | Starch ether thickener |
| ZZC 500 | German JRS companies | Cellulose thickener |
| Seal 80 | Akzo Nobel N.V. | Organic silicon hydrophobic agent |
Embodiment 1
The 4th coating composition for forming hydrophobicity putty layer is carried out as follows preparation.By cement, quartz sand, heavy carbon
Sour calcium, EVA rubber powders, HCMC 75000S, starch ether Casucol 301, lignocellulosic ZZC500 and water-repelling agent Seal 80 according to
In secondary addition dry-powder putty mixing and blending machine, and stir, so as to obtain the coating composition of putty layer.The use of embodiment 1
The consumption of each component in the 4th coating composition for forming putty layer is listed in Table 2.
Table 2. is used for the composition and its performance of the 4th coating composition for forming putty layer
By with the result of upper table 2 it can be clearly seen that including organic silicon hydrophobic for forming the coating composition of putty layer
Agent, and there is strong-hydrophobicity micropore by the putty layer that this coating composition is formed, wherein water absorption rate is only 1.6g/10min,
Well below standard of the water absorption rate less than 2.0g/10min that the putty layer of building trade specifies.
Priming coat
The raw material included in the coating composition for forming hydrophobicity priming coat is listed in as in table 3 below.
Table 3
| Trade name | Supplier/retailer | Description |
| RS-998A | Ahmedabad richness Industrial Co., Ltd. | Cinnamic acrylic ester latex |
| PE-2133 | PolyWell companies | Pure acrylate emulsion |
| R298 | Shanghai Yan Tai Industrial Co., Ltd.s | Rutile titanium white powder |
| CELITE 350 | Shanghai He Hui titanium whites industrial corporation | Diatomite |
| GF117 | Chinese wide Fujian material | Powdered whiting |
| TA-800 | Kunshan Xin Xin superfine powders Co., Ltd | Talcum powder |
| HEC 250HBR | U.S. Aqualon Company | Cellulose ethers thickener |
| RHEOLATE 278 | This company of U.S.'s hamming | Modified polyurethane type thickener |
| 120V | LG-DOW chemical industry | Polyacrylic acid dipersant |
| CF-10 | LG-DOW chemical industry | Wetting agent |
| SN154 | Japanese Nuo Puke | Organosiloxane class defoamer |
| CF246 | Beijing Sai Deli Science and Technology Ltd.s | Grease type defoamer |
| BS-16 | German Wa Ke companies | Organosilicon pH adjusting agent |
| BS-1001 | German Wa Ke companies | Organic silicon hydrophobic agent |
| WD60 | Beijing An Tepuna companies | Silane coupler |
| BIT20 | Chinese Shanghai Ou Mo chemical industry | Bactericide |
| ROCIMA350 | Rohm＆Haas companies of the U.S. | Mould inhibitor |
| Dodecane alcohol ester | General industry product | Coalescents |
| Ethylene glycol | General industry product | Solvent |
| Deionized water |
Embodiment 2
The first coating composition for forming hydrophobicity priming coat is carried out as follows preparation.
Under the stirring at low speed of 350-450rpm/ minutes, to addition 200g deionized waters and thickener HEC in agitator
250HBR, dispersant 120V, wetting agent CF-10, defoamer SN154, pH adjusting agent BS-16, and stir 5-10 minutes, so that
It is even.Then to addition titanium dioxide R298, CELITE530, GF117, TA-800 and deionized water in mixture, and with 800-
High-speed stirred 20-30 minutes 1250rpm/ minutes, so as to form uniform sizing material.The last middling speed at 500-700rpm/ minutes is stirred
Mix down, to addition defoamer CF-246, ethylene glycol, dodecane alcohol ester, organic silicon hydrophobic agent BS-1001, emulsion in uniform sizing material
Combination (using the combination of pure acrylate emulsion 2133 and styrene-acrylate emulsion RS-998A), BIT20 bactericide,
W350 mould inhibitors, thickener 278, silane coupler WD60 and remaining portions of de-ionized water, until uniform, so as to form
One coating composition.The consumption of each component in the coating composition of embodiment 2 is listed in Table 4.
Table 4：Composition and its performance for forming the second coating composition of hydrophobicity priming coat
By with the result of upper table 4 it can be clearly seen that the aqueous breast of the coating composition for forming hydrophobicity priming coat
Glue has the appropriate low equal particle diameters of z, and has hydrophobicity and certain porosity by the priming coat that this coating composition is formed,
Wherein permeability rate is 0.2mL/24 hours, thus this priming coat can produce air-permeable, hydrophobic effect.And use the common painting of tradition
The permeability rate of the coating that feed composition is obtained is not ideal, it is impossible to obtain the hydrophobic, air-permeability that the present invention is obtained.
Finishing coat
The raw material included in the coating composition for forming heat reflectivity finishing coat is listed in as in table 3 below.
Table 5
| Trade name | Supplier/retailer | Description |
| GD56 | Henkel Corp. | Pure acrylate emulsion |
| LJTF-01 | Guangzhou Lian Jie trade Co., Ltds | Hollow ceramic microspheres |
| W-610 | Minnesota Mining and Manufacturing Company | Solid ceramic microballoon |
| R706 | E.I.Du Pont Company | Rutile titanium white powder |
| 499 | Yuyao City chemical company's tomorrow | Diatomite |
| HEC 250HBR | U.S. Aqualon Company | Cellulose ethers thickener |
| Rheotech 3500 | Coatex companies | Alkali swelling type thickener |
| 731A | Rohm＆Haas companies of the U.S. | Polyacrylic acid dipersant |
| SN154 | Japanese Nuo Puke | Organosiloxane class defoamer |
| 122NS | Japanese Nuo Puke | Grease type defoamer |
| CF246 | Beijing Sai Deli Science and Technology Ltd.s | Grease type defoamer |
| BS-16 | German Wa Ke companies | Organosilicon pH adjusting agent |
| WD60 | Beijing An Tepuna companies | Silane coupler |
| A203 | Guangzhou Tian Chen microorganisms Co., Ltd | Bactericide |
| FA39 | Singapore PCTS | Mould inhibitor |
| Dodecane alcohol ester | General industry product | Coalescents |
| Propane diols | General industry product | Solvent |
| Deionized water |
Embodiment 3
Coating composition for forming heat reflectivity finishing coat is carried out as follows preparation.
Under the stirring at low speed of 350-450rpm/ minutes, to addition 160g deionized waters and thickener HEC in agitator
250HBR, dispersant 731A, 12g defoamer SN154 and 2g defoamer 122NS, pH adjusting agent BS-16, and stir 5-10 minutes,
So as to uniform.Then it is micro- to titanium dioxide R706, diatomite 499, solid ceramic microbeads W-610, hollow ceramic is added in mixture
Pearl LJTF-01 and deionized water, and with high-speed stirred 20-30 minutes 800-1250rpm/ minutes, so as to form uniform sizing material.Most
Afterwards under the moderate-speed mixer of 500-700rpm/ minutes, to addition 4g defoamer CF-246 and 2g defoamers SN in uniform sizing material
154th, dodecane alcohol ester, A203 bactericide, FA39 mould inhibitors, pure acrylate emulsion GD56, thickener COATEX 3500, third
Glycol, silane coupler WD 60 and remaining portions of de-ionized water, until uniform, so as to form the second coating composition.It is real
The consumption for applying each component in the second coating composition of example 2 is listed in Table 6.
Table 6：Composition and its performance for forming the second coating composition of heat reflectivity finishing coat
By with the result of upper table 6 it can be clearly seen that the coating composition of embodiment 3 contains hollow ceramic microspheres, solid
The heat reflection filler such as ceramic fine bead and rutile titanium white powder, and there is heat-flash by the priming coat that this coating composition is formed
Reflectivity.
Hydrophily finishing coat
The raw material included in the coating composition for forming hydrophily finishing coat is listed in as in table 7 below.
Table 7
Embodiment 4
Coating composition for forming hydrophily finishing coat can be by being carried out as follows preparation.At 350-450rpm/ points
Under the stirring at low speed of clock, to addition deionized water, nano titanic oxide sol SL101, optional stabilizer FT- in agitator
100 and optional defoamer SN154, and stir, so as to obtain the coating composition for hydrophily finishing coat.
Or, purchased from the scientific and technological nano titanium oxide complex sol SL101 of name paddy, (wherein the solid content of the colloidal sol is 0.1
To 5 weight %) can be directly used as being formed the coating composition of hydrophily finishing coat.
Consumption for each component in the coating composition for forming hydrophily finishing coat is listed in Table 8.
Table 8：Composition and its performance for forming the coating composition of hydrophily finishing coat
By with the result of upper table 8 it can be clearly seen that containing dioxy for forming the coating composition of hydrophily finishing coat
Change titanium, and there is self-cleaning property by the hydrophily finishing coat that this coating composition is formed.
Coating system
Three cities with characteristic feature in East China, south China, North China are chosen respectively：Shanghai, Guangzhou, Beijing.Wherein, north
Capital and District of Shanghai design are using wall Class1 (k=0.857w/m2.K), and In Guangzhou Area then selects another heat transfer system
Number wall type 2 (k=1.413w/m2.K) higher.By coating system of the invention (including priming coat, finishing coat and hydrophilic
Property finishing coat) be applied on outer face of wall, then determine gained exterior wall heat transfer coefficient.Test result is listed in Table 9.
Table 9. is coated with the comparative result with the heat transfer coefficient of the exterior wall of uncoated coating system of the present invention
| Area | It is not coated with coating system | The wall face of exterior wall |
| Shanghai | 1.083w/m2.K | 0.857w/m2.K |
| Beijing | 1.083w/m2.K | 0.857w/m2.K |
| Guangzhou | 1.643w/m2.K | 1.413w/m2.K |
From result above, compared with the wall of uncoated coating system, coating system of the invention is coated with thereon
Wall have substantially reduce heat transfer coefficient.That is, the heat transfer coefficient for being coated with the wall of coating system of the present invention is almost approached
Design load.
In addition, as described in part of detecting, the exterior wall that external metope is coated with coating system of the invention carries out annual energy consumption
Test.Result is listed in Table 10.
Table 10. is coated with the comparative result with the simulation energy-saving efficiency of the exterior wall of uncoated coating system of the present invention
| Area | Benchmark (GJ) | Wall outer side (GJ) | Whole year 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% |
From result above, coating system of the invention has significant energy-saving effect.In particular, in building energy consumption master
It is more notable with the area based on summer air-conditioning cooling, such as Guangzhou, energy-saving efficiency.
And, above coating system, when being determined according to stain resistance test method GB/T9780, only with 5% it is flat
Equal reflectivity declines；Also, coated by oleic acid, and be 2.0mW/cm in intensity2, wavelength 340nm UV light under irradiate 24
Only there are 15 degree of Static water contact angles after hour.That is, coating system of the invention also has excellent automatically cleaning
Characteristic.
As can be seen here, the coating containing hydrophobicity priming coat, heat-reflecting surface coating and hydrophily finishing coat of the invention
System not only has excellent heat-proof quality also with outstanding automatically cleaning characteristic.It is additionally, since depositing for self-cleaning property finishing coat
Even if coating system of the invention is exposed to the external environment for a long time to remain to keep its excellent heat-proof quality.
Although the present invention is described with reference to a large amount of implementation methods and embodiment, those of ordinary skill in the art according to
Present disclosure is able to recognize that can design other embodiment, and this is without departing from protection scope of the present invention and essence
God.
Claims (23)
1. a kind of exterior wall automatically cleaning heat insulating coat system, it is included：
A hydrophobicity priming coat that () is formed by the first coating composition, wherein first coating composition includes water based emulsion,
And the permeability rate of the priming coat is at most 0.3mL/24 hours；
B heat reflectivity finishing coat that () is formed by the second coating composition, wherein second coating composition includes heat reflection
Filler, and the sun reflectivity of the finishing coat is at least 85%, and/or hemisphere transmitting ratio is at least 85%；With
C () is coated in the hydrophily finishing coat formed by the 3rd coating composition on the heat reflectivity finishing coat, wherein
3rd coating composition includes nano titanium oxide and aqueous solvent,
The water based emulsion in wherein described first coating composition is not less than 50nm and not higher than 200nm comprising the equal particle diameters of z
Polymer beads.
2. exterior wall as claimed in claim 1 automatically cleaning heat insulating coat system, wherein, the finishing coat, when according to stain resistant
Property test method GB/T9780 when determining, decline with 10% or smaller average reflectance, and/or, the finishing coat
Coated by oleic acid, and be 2.0mW/cm in intensity2, wavelength 340nm UV light under irradiation 24 hours afterwards have 15 degree or
Smaller Static water contact angles.
3. exterior wall as claimed in claim 1 automatically cleaning heat insulating coat system, wherein, the finishing coat, when according to stain resistant
Property test method GB/T9780 when determining, decline with 5% or smaller average reflectance.
4. exterior wall as claimed in claim 1 automatically cleaning heat insulating coat system, wherein, the finishing coat is coated by oleic acid,
And it is 2.0mW/cm in intensity2, wavelength 340nm UV light under irradiation there is 10 degree or smaller of Static Water to connect for 24 hours afterwards
Feeler.
5. exterior wall as claimed in claim 1 automatically cleaning heat insulating coat system, wherein, the finishing coat has 0.2-2 microns
Theoretical calculation thickness of dry film.
6. exterior wall as claimed in claim 1 automatically cleaning heat insulating coat system, wherein, the sun reflectivity of the finishing coat is
At least 88%, and/or hemisphere transmitting ratio is at least 87%.
7. exterior wall as claimed in claim 1 automatically cleaning heat insulating coat system, wherein, the permeability rate of the priming coat be less than or
Equal to 0.2mL/24 hours.
8. exterior wall as claimed in any of claims 1 to 7 in one of claims automatically cleaning heat insulating coat system, wherein, described first applies
The water based emulsion in feed composition includes 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-ethylene water based emulsion, ethylene-vinyl acetate water based emulsion, vinyl acetate-acrylate-
Tertiary carbonic ester water based emulsion or its combination.
9. exterior wall as claimed in any of claims 1 to 7 in one of claims automatically cleaning heat insulating coat system, wherein, described first applies
Feed composition is included, based on the gross weight of first coating composition,
The water based emulsion of 30 to 90 weight %；
The filler of 10 to 55 weight %；
The organic silicon hydrophobic agent of 0.5 to 2.5 weight %；With
The additional additives of 0 to 20 weight %, wherein the additional additives include thickener, dispersant, wetting agent, froth breaking
Agent, pH adjusting agent, solvent, coalescents, bactericide, mould inhibitor, coupling agent or its any combination.
10. exterior wall as claimed in claim 9 automatically cleaning heat insulating coat system, wherein, first coating composition is included,
Relative to the gross weight of first coating composition,
The cinnamic acrylic ester water based emulsion of 10 to 50 weight %；
The pure acrylate water based emulsion of 10 to 50 weight %；
The described filler of 10 to 55 weight %；
The organic silicon hydrophobic agent of 0.5 to 2.5 weight %；With
The additional additives of 0.1 to 15 weight %, the additional additives include thickener, dispersant, wetting agent, froth breaking
Agent, pH adjusting agent, coalescents, solvent, bactericide, mould inhibitor, coupling agent or its any combination.
11. exterior walls as claimed in any of claims 1 to 7 in one of claims automatically cleaning heat insulating coat system, wherein, described second applies
The heat reflection filler in feed composition includes ceramic fine bead, titanium dioxide and combinations thereof.
12. exterior walls as claimed in claim 11 automatically cleaning heat insulating coat system, wherein, the ceramic fine bead includes solid pottery
Porcelain microballon, hollow ceramic microballon or its combination.
13. exterior walls as claimed in claim 11 automatically cleaning heat insulating coat system, wherein, the titanium dioxide includes rutile
Type titanium dioxide.
14. exterior walls as claimed in any of claims 1 to 7 in one of claims automatically cleaning heat insulating coat system, wherein, described second applies
Feed composition is included, based on the gross weight of second coating composition,
The water based emulsion of 30 to 80 weight %；
The heat reflection filler of 20 to 40 weight %；
The additional additives of 0 to 40 weight %, wherein the additional additives include additional filler, thickener, dispersant, froth breaking
Agent, pH adjusting agent, coalescents, solvent, bactericide, mould inhibitor, coupling agent or its any combination.
15. exterior walls as claimed in any of claims 1 to 7 in one of claims automatically cleaning heat insulating coat system, wherein, the described 3rd applies
The nano titanium oxide in feed composition has photocatalytic activity.
16. exterior walls as claimed in any of claims 1 to 7 in one of claims automatically cleaning heat insulating coat system, wherein, the described 3rd applies
Feed composition is included, based on the gross weight of the 3rd coating composition,
The nano titanium oxide of 0.05 to 20wt%；
The aqueous solvent of 60 to 99.95wt%；With
The additional additives of 0 to 20wt%, the additional additives include dispersant, pH adjusting agent, defoamer, coalescents,
Bactericide, mould inhibitor or its any combination.
17. exterior walls as claimed in any of claims 1 to 7 in one of claims automatically cleaning heat insulating coat system, also comprising being arranged on
The hydrophobicity putty layer formed by the 4th coating composition under hydrophobicity priming coat is stated, the 4th coating composition is included
Organic silicon hydrophobic agent, and the hydrophobicity putty layer has the at most water absorption rate of 1.6g/10min.
18. exterior walls as claimed in claim 17 automatically cleaning heat insulating coat system, wherein, the 4th coating composition bag
Contain, relative to the gross weight of the 4th coating composition,
The binding agent of 20 to 40wt%, the binding agent includes finished ground cement and organic polymer；
The filler of 40 to 78wt%；
The organic silicon hydrophobic agent of 0.1 to 10wt%；With
The additional additives of 0 to 10wt%, the additional additives include thickener, water-loss reducer, preservative, antifreeze, smooth
Agent, water reducer or its any combination.
19. exterior walls as claimed in any of claims 1 to 7 in one of claims automatically cleaning heat insulating coat system, wherein, the exterior wall bag
Containing following construction material, the construction material includes concrete segment, plasterboard, Dinas brickes, air entrained concrete, composite light
Plate, cement fibrolite plate and its any combination.
20. exterior walls as claimed in any of claims 1 to 7 in one of claims automatically cleaning heat insulating coat system, wherein, wall face coating
There is the heat transfer coefficient of the exterior wall of the coating system, compared with the heat transfer coefficient of the exterior wall of the uncoated coating system, decline
At least 12%.
21. exterior walls as claimed in any of claims 1 to 7 in one of claims automatically cleaning heat insulating coat system, wherein, wall face coating
There is the exterior wall of the coating system, compared with the exterior wall of the uncoated coating system, have extremely under the meteorological condition in Guangzhou
The simulation energy-saving efficiency of few 20%/whole year, or there is at least 15%/annual simulation energy-conservation to imitate under the meteorological condition in Shanghai
Rate, or there is the simulation energy-saving efficiency of at least 6%/whole year under Pekinese's meteorological condition.
A kind of 22. methods for being coated with exterior wall, methods described includes：Exterior wall described in any one in claim 1 to 21 is used
Automatically cleaning heat insulating coat system is applied on the wall face of the exterior wall, so as to obtain being coated with the automatically cleaning heat insulating coat body
The exterior wall of system.
23. methods as claimed in claim 22, wherein, the exterior wall includes following construction material, and the construction material includes
Concrete segment, plasterboard, Dinas brickes, air entrained concrete, composite light-weight scutum, cement fibrolite plate and its any combination.
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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 |
| CN105086560B (en) * | 2014-05-20 | 2018-10-26 | 广东华润涂料有限公司 | Heat reflectivity, imitation stone effect coating system |
| CN107629650A (en) * | 2017-09-07 | 2018-01-26 | 广州市泰宇科技发展有限公司 | A kind of self-cleaning paint, its preparation method and application method for ceramic tile substrate |
| CN107674482B (en) * | 2017-10-16 | 2019-08-09 | 厦门广福鑫实业有限公司 | Cleaning material and its application method in a kind of metal works spraying process |
| CN111171641A (en) * | 2020-01-20 | 2020-05-19 | 广东施彩新材料科技有限公司 | Double-layer structured photocatalytic environment-friendly coating and preparation method thereof |
| CN113429841B (en) * | 2021-06-22 | 2022-06-21 | 广东华润涂料有限公司 | Water-based coating composition for forming wall heat-insulating coating and wall reflection heat-insulating coating system containing heat-insulating coating |
| CN114195425A (en) * | 2021-12-09 | 2022-03-18 | 浙江农林大学 | Efficient multipurpose gypsum-based material additive |
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| CN102864884A (en) | 2013-01-09 |
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Effective date of registration: 20231201 Address after: No. 536 Rongle East Road, Industrial Development Zone, Songjiang District, Shanghai, 2017 Patentee after: AkzoNobel Paints (Shanghai) Co.,Ltd. Address before: 528399 No. 7, Wusha Section, Shunfan Road, Daliang Street, Shunde District, Foshan City, Guangdong Province Patentee before: Vesper Paint (Guangdong) Co.,Ltd. |
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