CN105331220B - A kind of composite metal roof insulation water-repellent paint and preparation method thereof - Google Patents

A kind of composite metal roof insulation water-repellent paint and preparation method thereof Download PDF

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CN105331220B
CN105331220B CN201510898394.1A CN201510898394A CN105331220B CN 105331220 B CN105331220 B CN 105331220B CN 201510898394 A CN201510898394 A CN 201510898394A CN 105331220 B CN105331220 B CN 105331220B
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water
acrylic emulsion
metal roof
defoamer
parts
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CN105331220A (en
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程先政
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Shanghai Terra Engineering & Industry Co Ltd
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Shanghai Terra Engineering & Industry Co Ltd
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Abstract

The present invention relates to a kind of composite metal roof insulation water-repellent paint and preparation method thereof, it is made up of investment precoat and base layer dope, the raw material of investment precoat includes following components:Water, dispersant, defoamer, pigment, hollow glass micropearl, inorganic thixotropic thickening agent, inorganic filler, fluorine-silicon modified acrylic emulsion, acrylic emulsion, coalescents, pH value regulator, thickener, antifreeze;The raw material of base layer dope includes following components:Water, dispersant, defoamer, pigment, heat conduction functional stuffing, inorganic thixotropic thickening agent, inorganic filler, acrylic emulsion, pH value regulator, thickener, antifreeze.Compared with prior art, the present invention solve the problems, such as current waterproof material and metal base bond loosely, easy to aging, restricted lifetime, there is the advantages of waterproof, protection, antirust, heat-insulation integrative.

Description

A kind of composite metal roof insulation water-repellent paint and preparation method thereof
Technical field
The present invention relates to heat-insulating waterproof coating and preparation method thereof, prevents more particularly, to a kind of composite metal roof insulation Water paint and preparation method thereof.
Background technology
With China's rapid development of economy, steel building due to its from heavy and light, intensity is high, factory's prepackage degree is high, Construct the advantages that convenient, overall economic efficiency is notable, it is large-scale to be widely used in plant floor, logistics warehouse, physical culture place etc. It is architectural.
Steel construction advocates energy-saving and emission-reduction in the whole society now as an important component very important in building Overall situation under, effectively steel construction metal Roof is thermally shielded and the meaning of waterproof is particularly important.Steel construction metal Roof Material characteristic itself and corrosion leakage cause, the selection and construction technology for determining processing waterproof problem have necessarily special Property.Such as:Waterproof material has uvioresistant, ageing-resistant, and cementability is strong, elastomeric characteristic;Waterproof construction must have good Good heat-proof quality;The selection of material must reach " feature of environmental protection " requirement etc..
In the method used at present, there are SBS coiled materials, JS polymer cement waterproof paints, weather-proof silicone adhesive, polyurethane water-proof Coating etc., the anti-ultraviolet property of these conventional waterproof materials is poor, and cementability is low, easy to aging, and water-proof function keeps the time limit short, certainly Determine it and cannot be used for outdoor, be more not suitable for the waterproof problem of processing lightweight steel construction metal Roof.
Water-proof acrylic acid paint is as building water-proof paint, and its weatherability is poor, and photostability is poor, and water resistance is poor, does not have Effective heat-insulated, radiating composition, can not meet the requirement of the insulating water-proof, heat dissipation, energy conservation of metal Roof.
Chinese patent CN102993831A discloses a kind of Metal roof heat-insulation waterproof paint, including following weight proportion Component:It is water 5-10 parts, dispersant 0.5-1.5 parts, defoamer 0.2-1 parts, waterproofing agent of organosilicon 0.1-1 parts, pigment 5-15 parts, super Thin barium sulfate 5-10 parts, hollow glass micropearl 5-10 parts, inorganic filler 20-25 parts, Neoprene latex 25-45 parts, pH value are adjusted Save 0.05~0.1 part of agent, 0.02~0.05 part of thickener.But the functional stuffing of heat conductivility is not related in the patent, apply When material shaping exposes heated for a long time to the open air, in addition to the energy reflected, a large amount of absorbed heats coat inside cannot and When distribute and put aside, directly affect bonding and the life-span of itself of coating and basic unit.
The content of the invention
Prevent at present it is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind solves Water material and metal base bond loosely, easy to aging, restricted lifetime the problem of, accomplish waterproof, protection, antirust, heat-insulation integrative Composite metal roof insulation water-repellent paint and preparation method thereof.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of composite metal roof insulation water-repellent paint, is made up of investment precoat and base layer dope,
The raw material of described investment precoat includes the component of following parts by weight content:Water 5-10, dispersant 0.5-1.5, disappear Infusion 0.2-1, pigment 5-15, hollow glass micropearl 5-10, inorganic thixotropic thickening agent 5-10, inorganic filler 20-25, Si modification third Olefin(e) acid emulsion 5-43, acrylic emulsion 28-43, coalescents 0.5-1, pH value regulator 0.05-0.1, thickener 0.02- 0.05th, antifreeze 0.5-1;
The raw material of described base layer dope includes the component of following parts by weight content:Water 5-10, dispersant 0.5-1.5, disappear Infusion 0.2-1, pigment 5-10, heat conduction functional stuffing 18-27, inorganic thixotropic thickening agent 5-10, inorganic filler 8-12, Si modification third Olefin(e) acid emulsion 5-40, acrylic emulsion 25-40, pH value regulator 0.05-0.1, thickener 0.02-0.05, antifreeze 0.5-1.
In addition, base layer dope also includes the component of following parts by weight content:Antiager 0.1-1, levelling agent 0.15-1, Bactericide 0.2-1.
Described dispersant is anionic dispersing agent.
Described defoamer is nonionic defoamer.
Described inorganic thixotropic thickening agent is the one or more of attapulgite, organobentonite or calcined kaolin.
Described pigment is rutile type titanium white.
Described inorganic filler is the one or more in quartz sand, calcium carbonate or talcum powder.
Described pH value regulator is organic amine pH value regulator.
Described antifreeze is alcohols antifreeze.
Described thickener is the one or more in hydroxyethyl cellulose, methylcellulose, carboxymethyl cellulose.
Described coalescents are ester alcohol class coalescents.
Described heat conduction functional stuffing is one in aluminum oxide, magnesia, zinc oxide, aluminium nitride, boron nitride or carborundum Kind is several.
Described hollow glass micropearl is high intensity hollow glass micropearl, and main component is silica.
Described fluorine-silicon modified acrylic emulsion be organic silicon it is acrylic resin modified be main body emulsion, using containing double Organic silicon monomer γ-methacryloxypropyl trimethoxy silane of key and acrylic acid (ester) monomer radical combined polymerization, Acrylic resin is modified, silicone content 8-10wt%.
The glass transition temperature of described acrylic emulsion is between -10 DEG C to -40 DEG C.
The preparation method of composite metal roof insulation water-repellent paint, including the preparation of investment precoat and the system of base layer dope Standby two steps,
When prepared by investment precoat, at normal temperatures and pressures by dispersant, defoamer, pigment, be dissolved in formula ratio 40%-70% It is well mixed in the water of mass fraction, adds inorganic thixotropic thickening agent, inorganic filler, acrylic emulsion, coalescents stirring It is even, then add acrylic emulsion, pH value regulator, thickener, the well mixed hollow glass micropearl and remaining of being eventually adding Water stirs;Whole dispersion process mixer rotating speed is in 600~1200r/min.
When prepared by base layer dope, dispersant, defoamer, pigment, heat conduction functional stuffing are dissolved in and matched somebody with somebody at normal temperatures and pressures Side amount 40%-70% mass fractions water in be well mixed, add inorganic thixotropic thickening agent, inorganic filler, acrylic emulsion, into Film auxiliary agent stirs, and then adds acrylic emulsion, pH value regulator, and thickener is well mixed to be eventually adding remaining water Stir.Whole dispersion process mixer rotating speed is in 600~1200r/min.
Compared with prior art, the brushing base layer dope on metal Roof first when in use of the invention, is applied again after to be dried Brush finish coating, form composite metal roof insulation water-repellent paint.On top layer, insulating moulding coating reflected sunlight reduces roofing and inhaled While receiving energy, basic unit's heat radiation coating is effectively transmitted to metal Roof top layer by even heat so that roofing temperature is protected Reduced levels are held, whole system employs 2 kinds of formula systems.Investment precoat employs the formula system design of high reflection, surface layer The sun luminous reflectance and hemispherical emissivity of coating are above 0.8, and effect of heat insulation is obvious, and maximum temperature difference reaches more than 13 DEG C;Base Coating employs the formula system design of quick heat radiating, and the heat transfer efficiency of base layer dope is higher than conventional acrylic water-repellent paint, In time the heat of surface layer Assimilation and conductivity can be distributed uniformly in time to build in basic unit, so as to reduce the temperature of Bulk coat Degree, improve the service life of coating.This two kinds of formula systems design, ensureing high sun luminous reflectance, high hemispherical emissivity Meanwhile the service life of coating can be effectively improved, there is advantages below:
1. add rutile titanium white powder so that coating has sun-resistant, the good anti-exposure such as do not ftracture, be non-discolouring Energy.It has good chemical stability.
2. surface layer insulating moulding coating adds hollow glass micropearl, it has the high and good chemistry of light, low heat conduction, intensity Other reflection infrared rays and hot visible ray in the advantages that stability, with coating (sunray produces the major part of heat) Filler combine so that coating reaches heat-insulating and energy-saving performance.
3. basic unit's heat radiation coating adds the one or more kinds of of aluminum oxide, magnesia, zinc oxide, carborundum etc. and mixed Compound, its stable performance, thermal conductivity factor is high, the even heat that surface coating material absorbs can be transmitted into metal Roof basic unit, made Obtain surface coating material and be always maintained at the relatively low state of temperature.Whole coating protecting system and the temperature of metal Roof, the temperature difference keep one Cause so that coating is synchronous with the cold and hot deformation holding of metal Roof, so as to reduce the phenomenon of coating part hollowing or peeling.Directly Improve the volume life-span of coating.
4. all emulsions, filler, auxiliary agent have exceeded harmful material without any in formula, its environmental protection, security ensure that.
5. the novel organosilicon modified acrylic acid emulsion used, the functional stuffing of excellent thermal conductivity, UV resistant performance The extremely strong rutile titanium dioxide with albedo, substantially increase the ageing resistace of whole coating, heat dispersion, heat-insulated Effect.Why organosilicon-modified acrylic emulsion is used, be due to that organosilicon polymer has excellent weatherability, stain resistant Property and resistant of high or low temperature, the hydrophobicity of height, good water penetration.Acrylic resin has excellent adhesiveness and good power Performance, chemical stability are learned, but and water resistance and stain resistance extremely deeply grateful to temperature are poor.Therefore using organic-silicon-modified Acrylic resin, by both combine a little, it is greatly improved the performance of emulsion.
Embodiment
A kind of composite metal roof insulation water-repellent paint, is made up of investment precoat and base layer dope,
The raw material of investment precoat includes the component of following parts by weight content:Water 5-, dispersant 0.5-1.5, defoamer 0.2- 1st, pigment 5-15, hollow glass micropearl 5-10, inorganic thixotropic thickening agent 5-10, inorganic filler 20-25, fluorine-silicon modified acrylic emulsion 5-43, acrylic emulsion 28-43, coalescents 0.5-1, pH value regulator 0.05-0.1, thickener 0.02-0.05, antifreeze 0.5-1.The raw material of base layer dope includes the component of following parts by weight content:Water 5-10, dispersant 0.5-1.5, defoamer 0.2- 1st, pigment 5-10, heat conduction functional stuffing 18-27, inorganic thixotropic thickening agent 5-10, inorganic filler 8-12, fluorine-silicon modified acrylic emulsion 5-40, acrylic emulsion 25-40, pH value regulator 0.05-0.1, thickener 0.02-0.05, antifreeze 0.5-1.
In addition, base layer dope can further include the component of following parts by weight content:Antiager 0.1-1, stream Flat agent 0.15-1, bactericide 0.2-1.
In above each component raw material, dispersant is anionic dispersing agent.Defoamer is nonionic defoamer.It is inorganic to touch Change thickener into attapulgite, organobentonite or calcined kaolin one or more.Pigment is rutile type titanium white.Nothing Machine filler is the one or more in quartz sand, calcium carbonate or talcum powder.PH value regulator is organic amine pH value regulator.It is anti- Jelly agent is alcohols antifreeze.Thickener is the one or more in hydroxyethyl cellulose, methylcellulose, carboxymethyl cellulose. Coalescents are ester alcohol class coalescents.Heat conduction functional stuffing is aluminum oxide, magnesia, zinc oxide, aluminium nitride, boron nitride or carbon One or more in SiClx.Hollow glass micropearl is high intensity hollow glass micropearl, and main component is silica.Si modification Acrylic emulsion be organic silicon it is acrylic resin modified be main body emulsion, utilize organic silicon monomer γ-first containing double bond Base acryloxypropyl trimethoxy silane and acrylic acid (ester) monomer radical combined polymerization, change to acrylic resin Property, silicone content 8-10wt%.The glass transition temperature of acrylic emulsion is between -10 DEG C to -40 DEG C.
Composite metal roof insulation water-repellent paint includes the preparation of investment precoat and the preparation of base layer dope in the preparation Two steps,
When prepared by investment precoat, at normal temperatures and pressures by dispersant, defoamer, pigment, be dissolved in formula ratio 40%-70% It is well mixed in the water of mass fraction, adds inorganic thixotropic thickening agent, inorganic filler, acrylic emulsion, coalescents stirring It is even, then add acrylic emulsion, pH value regulator, thickener, the well mixed hollow glass micropearl and remaining of being eventually adding Water stirs;Whole dispersion process mixer rotating speed is in 600~1200r/min.
When prepared by base layer dope, dispersant, defoamer, pigment, heat conduction functional stuffing are dissolved in and matched somebody with somebody at normal temperatures and pressures Side amount 40%-70% mass fractions water in be well mixed, add inorganic thixotropic thickening agent, inorganic filler, acrylic emulsion, into Film auxiliary agent stirs, and then adds acrylic emulsion, pH value regulator, and thickener is well mixed to be eventually adding remaining water Stir.Whole dispersion process mixer rotating speed is in 600~1200r/min.
With reference to specific embodiment, the present invention is described in detail.
Embodiment 1
First, Preparation equipment
Speed governing disperses all-in-one, agitator
2nd, description of the process
Scattered form is added according to this area conventional technical means sequence requirement ratio, time according to formula.
3rd, formulation weight proportioning component
Water 5-10 parts, dispersant 0.5-1.5 parts, defoamer 0.2-1 parts, pigment 5-15 parts, hollow glass micropearl 5-10 parts, Inorganic thixotropic thickening agent 5-10 parts, inorganic filler 20-25 parts, fluorine-silicon modified acrylic emulsion 5-43, acrylic emulsion 28-43 parts, Coalescents 0.5-1 parts, pH value conditioning agent 0.05-0.1 parts, thickener 0.02-0.05 parts, antifreeze 0.5-1 parts.
Further, metal Roof top layer insulating moulding coating, in addition to antiager 0.1-1 parts, levelling agent 0.15-1 parts, kill Microbial inoculum 0.2-1 parts.
The formula of several metal Roof top layer insulating moulding coatings for specifically realizing the present invention given below:
Scheme 1
5 parts of water, 0.5 part of dispersant, 0.2 part of defoamer, 5 parts of pigment, 5 parts of hollow glass micropearl, inorganic thixotropic thickening agent 5 Part, 20 parts of inorganic filler, 10 parts of fluorine-silicon modified acrylic emulsion, 28 parts of acrylic emulsion, 0.5 part of coalescents, pH value conditioning agent 0.05 part, 0.02 part of thickener, 0.5 part of antifreeze, 0.5 part of antiager, 1 part of levelling agent, 0.5 part of bactericide.
Scheme 2
10 parts of water, 1 part of dispersant, 0.8 part of defoamer, 10 parts of pigment, 10 parts of hollow glass micropearl, inorganic thixotropic thickening agent 5 parts, 22 parts of inorganic filler, 12 parts of fluorine-silicon modified acrylic emulsion, 40 parts of acrylic emulsion, 1 part of coalescents, pH value conditioning agent 0.1 part, 0.05 part of thickener, 1 part of antifreeze.0.2 part of antiager, 0.5 part of levelling agent, 0.5 part of bactericide.
Embodiment 2
The metal Roof basic unit heat radiation coating of the present invention is prepared with the following method:
First, Preparation equipment
Speed governing disperses all-in-one, agitator
2nd, description of the process
Scattered form is added according to this area conventional technical means sequence requirement ratio, time according to formula.
3rd, formulation weight proportioning component
Water 5-10 parts, dispersant 0.5-1.5 parts, defoamer 0.2-1 parts, pigment 5-10 parts, heat conduction functional stuffing 18-27, Inorganic thixotropic thickening agent 5-10 parts, inorganic filler 8-12 parts, fluorine-silicon modified acrylic emulsion 5-40 parts, acrylic emulsion 25-40 parts, PH value conditioning agent 0.05-0.1 parts, thickener 0.02-0.05 parts, antifreeze 0.5-1 parts.
Further, described metal Roof basic unit heat radiation coating, in addition to antiager 0.1-1 parts, levelling agent 0.15- 1 part, bactericide 0.2-1 parts.
Several metal Roof basic unit heat radiation coatings for specifically realizing the present invention given below:
Embodiment 1
10 parts of water, 1.5 parts of dispersant, 1 part of defoamer, 10 parts of pigment, heat conduction functional stuffing 27, inorganic thixotropic thickening agent 8 Part, 10 parts of inorganic filler, 8 parts of fluorine-silicon modified acrylic emulsion, 37 parts of acrylic emulsion, 0.08 part of pH value conditioning agent, thickener 0.02 part, 1 part of antifreeze, 0.1 part of antiager, 0.45 part of levelling agent, 0.5 part of bactericide.
Embodiment 2
8 parts of water, 1 part of dispersant, 1 part of defoamer, 5 parts of pigment, heat conduction functional stuffing 20,10 parts of inorganic thixotropic thickening agent, 8 parts of inorganic filler, 14 parts of fluorine-silicon modified acrylic emulsion, 30 parts of acrylic emulsion, 0.1 part of pH value conditioning agent, 0.02 part of thickener, 0.5 part of antifreeze, 0.5 part of antiager, 1 part of levelling agent, 1 part of bactericide.
The composition form of the composite metal roof insulation water-repellent paint system of the present invention:
In the uniform paint metals roof-base heat radiation coating in metal Roof top layer of cleaning.After basic unit's heat radiation coating is dried, Paint metals roofing surface layer heat-insulating waterproof coating.It is compound that the coating of two coatings, which is completely dried the protective coating formed afterwards, Metal roof heat-insulation waterproof paint system.
Embodiment 3
A kind of composite metal roof insulation water-repellent paint, is made up of investment precoat and base layer dope,
The raw material of investment precoat includes the component of following parts by weight content:Water 5, dispersant 0.5, defoamer 0.2, pigment 5, Hollow glass micropearl 5, inorganic thixotropic thickening agent 5, inorganic filler 20,16 parts of fluorine-silicon modified acrylic emulsion, acrylic emulsion 28, into Film auxiliary agent 0.5, pH value regulator 0.05, thickener 0.02, antifreeze 0.5;
The raw material of base layer dope includes the component of following parts by weight content:Water 5, dispersant 0.5, defoamer 0.2, pigment 5, Heat conduction functional stuffing 18, inorganic thixotropic thickening agent 5, inorganic filler 8,21 parts of fluorine-silicon modified acrylic emulsion, acrylic emulsion 25, pH It is worth conditioning agent 0.05, thickener 0.02, antifreeze 0.5.
In above-mentioned raw materials, dispersant is anionic dispersing agent, and defoamer is nonionic defoamer, inorganic thixotroping thickening Agent is attapulgite, and pigment is rutile type titanium white, and inorganic filler is quartz sand, and pH value regulator is adjusted for organic amine pH value Agent is saved, antifreeze is alcohols antifreeze, and thickener is one kind in hydroxyethyl cellulose, methylcellulose, carboxymethyl cellulose It is or several.Coalescents are ester alcohol class coalescents, and heat conduction functional stuffing is aluminum oxide, and hollow glass micropearl is that high intensity is hollow Glass microballoon, main component are silica, and the glass transition temperature of acrylic emulsion is between -10 DEG C to -40 DEG C, Si modification Acrylic emulsion be organic silicon it is acrylic resin modified be main body emulsion, silicone content 8-10wt%.
Composite metal roof insulation water-repellent paint includes the preparation of investment precoat and the preparation of base layer dope in the preparation Two steps,
When prepared by investment precoat by dispersant, defoamer, pigment, be dissolved in formula ratio 40%-70% mass fractions, mix Close uniformly, add inorganic thixotropic thickening agent, inorganic filler, fluorine-silicon modified acrylic emulsion, acrylic emulsion, coalescents stirring It is even, then add acrylic emulsion, pH value regulator, thickener, the well mixed hollow glass micropearl and remaining of being eventually adding Water stirs;
Dispersant, defoamer, pigment, heat conduction functional stuffing are dissolved in formula ratio 40%-70% when prepared by base layer dope In the water of mass fraction, it is well mixed, adds inorganic thixotropic thickening agent, inorganic filler, fluorine-silicon modified acrylic emulsion, propylene yogurt Liquid, coalescents stir, and then add acrylic emulsion, pH value regulator, and thickener is well mixed to be eventually adding residue Water stir.
Embodiment 4
A kind of composite metal roof insulation water-repellent paint, is made up of investment precoat and base layer dope,
The raw material of investment precoat includes the component of following parts by weight content:Water 8, dispersant 1, defoamer 0.5, pigment 10, Hollow glass micropearl 8, inorganic thixotropic thickening agent 8, inorganic filler 22,15 parts of fluorine-silicon modified acrylic emulsion, acrylic emulsion 30, into Film auxiliary agent 0.8, pH value regulator 0.08, thickener 0.03, antifreeze 0.8;
The raw material of base layer dope includes the component of following parts by weight content:Water 8, dispersant 1, defoamer 0.8, pigment 7, lead Hot function filler 25, inorganic thixotropic thickening agent 7, inorganic filler 10,12 parts of fluorine-silicon modified acrylic emulsion, acrylic emulsion 33, pH It is worth conditioning agent 0.07, thickener 0.04, antifreeze 0.6, antiager 0.1, levelling agent 0.15, bactericide 0.2.
In above-mentioned raw materials, dispersant is anionic dispersing agent, and defoamer is nonionic defoamer, inorganic thixotroping thickening Agent is the mixture of organobentonite and calcined kaolin, and pigment is rutile type titanium white, and inorganic filler is calcium carbonate and cunning The mixture of stone flour, pH value regulator are organic amine pH value regulator, and antifreeze is alcohols antifreeze, and thickener is ethoxy One or more in cellulose, methylcellulose, carboxymethyl cellulose.Coalescents are ester alcohol class coalescents, heat conduction work( Can filler be magnesia and zinc oxide mixture, hollow glass micropearl is high intensity hollow glass micropearl, main component two Silica, for the glass transition temperature of acrylic emulsion between -10 DEG C to -40 DEG C, fluorine-silicon modified acrylic emulsion is organic silicon The acrylic resin modified emulsion for main body, silicone content 8-10wt%.
Composite metal roof insulation water-repellent paint includes the preparation of investment precoat and the preparation of base layer dope in the preparation Two steps,
By dispersant, defoamer, pigment, the water for being dissolved in formula ratio 40%-70% mass fractions when prepared by investment precoat In be well mixed, add inorganic thixotropic thickening agent, inorganic filler, acrylic emulsion, coalescents stir, then add third Olefin(e) acid emulsion, pH value regulator, thickener are well mixed to be eventually adding hollow glass micropearl and remaining water stirs;
Dispersant, defoamer, pigment, heat conduction functional stuffing are dissolved in formula ratio 40%-70% when prepared by base layer dope It is well mixed in the water of mass fraction, adds inorganic thixotropic thickening agent, inorganic filler, fluorine-silicon modified acrylic emulsion, propylene yogurt Liquid, coalescents stir, and then add acrylic emulsion, pH value regulator, and thickener is well mixed to be eventually adding residue Water stir.
Embodiment 5
A kind of composite metal roof insulation water-repellent paint, is made up of investment precoat and base layer dope,
The raw material of investment precoat includes the component of following parts by weight content:Water 10, dispersant 1.5, defoamer 1, pigment 15, Hollow glass micropearl 10, inorganic thixotropic thickening agent 10, inorganic filler 25,5 parts of fluorine-silicon modified acrylic emulsion, acrylic emulsion 43, Coalescents 1, pH value regulator 0.1, thickener 0.05, antifreeze 1;
The raw material of base layer dope includes the component of following parts by weight content:Water 10, dispersant 1.5, defoamer 1, pigment 10, Heat conduction functional stuffing 27, inorganic thixotropic thickening agent 10, inorganic filler 12,7 parts of fluorine-silicon modified acrylic emulsion, acrylic emulsion 40, PH value regulator 0.1, thickener 0.05, antifreeze 1, antiager 1, levelling agent 1, bactericide 1.
In above-mentioned raw materials, dispersant is anionic dispersing agent, and defoamer is nonionic defoamer, inorganic thixotroping thickening Agent is calcined kaolin, and pigment is rutile type titanium white, and inorganic filler is calcium carbonate, and pH value regulator is organic amine pH value Conditioning agent, antifreeze are alcohols antifreeze, and thickener is one in hydroxyethyl cellulose, methylcellulose, carboxymethyl cellulose Kind is several.Coalescents are ester alcohol class coalescents, and heat conduction functional stuffing is boron nitride, and hollow glass micropearl is that high intensity is empty Heart glass microballoon, main component are silica, and the glass transition temperature of acrylic emulsion is between -10 DEG C to -40 DEG C.Silicon changes Property acrylic emulsion be organic silicon it is acrylic resin modified, silicone content 8-10wt%.
Composite metal roof insulation water-repellent paint includes the preparation of investment precoat and the preparation of base layer dope in the preparation Two steps,
By dispersant, defoamer, pigment, the water for being dissolved in formula ratio 40%-70% mass fractions when prepared by investment precoat In be well mixed, add inorganic thixotropic thickening agent, inorganic filler, fluorine-silicon modified acrylic emulsion, acrylic emulsion, coalescents stir Mix uniformly, then add acrylic emulsion, pH value regulator, thickener is well mixed to be eventually adding hollow glass micropearl and remain Remaining water stirs;
Dispersant, defoamer, pigment, heat conduction functional stuffing are dissolved in formula ratio 40%-70% when prepared by base layer dope It is well mixed in the water of mass fraction, adds inorganic thixotropic thickening agent, inorganic filler, fluorine-silicon modified acrylic emulsion, propylene yogurt Liquid, coalescents stir, and then add acrylic emulsion, pH value regulator, and thickener is well mixed to be eventually adding residue Water stir.
The sheet metal roofing waterproof coating material obtained respectively to above-mentioned 5 embodiments carries out performance test, as a result as follows:
As can be seen from the above table, 5 real cases can meet standard requirement, and water absorption rate is in reduced levels, water-fast Excellent performance.Sun luminous reflectance and hemispherical emissivity are maintained at higher level.This hair can be seen that by above experimental data Composite metal roof insulation water-repellent paint system in bright is compared with prior art, more preferable with basic unit adhesive force, bonds more Firmly.Ageing-resistant performance is more excellent, and resistance to ultraviolet, weather resisteant protrudes, service life length.Heat-insulated protection effect is obvious, can effectively drop Low indoor temperature, energy-conserving and environment-protective.Product Green environmental protection, limit of harmful substance are substantially less than building coating class product requirement, without obvious Smell.
The content not being described in detail in description of the invention belongs to the known technology of professional and technical personnel in the field, this hair The bright protection content for being not limited to be related to shown in claim and instantiation, as long as created according to the design of the present invention Any invention come, should all be belonged within protection scope of the present invention.

Claims (8)

1. a kind of composite metal roof insulation water-repellent paint, it is characterised in that the coating is by investment precoat and base layer dope group Into,
The raw material of described investment precoat includes the component of following parts by weight content:Water 5-10, dispersant 0.5-1.5, defoamer 0.2-1, pigment 5-15, hollow glass micropearl 5-10, inorganic thixotropic thickening agent 5-10, inorganic filler 20-25, fluorine-silicon modified acrylic It is emulsion 5-43, acrylic emulsion 28-43, coalescents 0.5-1, pH value regulator 0.05-0.1, thickener 0.02-0.05, anti- Freeze agent 0.5-1;
The raw material of described base layer dope includes the component of following parts by weight content:Water 5-10, dispersant 0.5-1.5, defoamer 0.2-1, pigment 5-10, heat conduction functional stuffing 18-27, inorganic thixotropic thickening agent 5-10, inorganic filler 8-12, fluorine-silicon modified acrylic Emulsion 5-40, acrylic emulsion 25-40, pH value regulator 0.05-0.1, thickener 0.02-0.05, antifreeze 0.5-1;
Described fluorine-silicon modified acrylic emulsion be organic silicon it is acrylic resin modified be main body emulsion, using containing double bond Organic silicon monomer γ-methacryloxypropyl trimethoxy silane and acrylic acid (ester) monomer radical combined polymerization, to third Olefin(e) acid resin is modified, silicone content 8-10wt%;
Described heat conduction functional stuffing be aluminum oxide, magnesia, zinc oxide, aluminium nitride, boron nitride or carborundum in one kind or It is several.
A kind of 2. composite metal roof insulation water-repellent paint according to claim 1, it is characterised in that described basic unit Coating also includes the component of following parts by weight content:Antiager 0.1-1, levelling agent 0.15-1, bactericide 0.2-1.
3. a kind of composite metal roof insulation water-repellent paint according to claim 1, it is characterised in that described is scattered Agent is anionic dispersing agent, and described defoamer is nonionic defoamer, and described inorganic thixotropic thickening agent is concave convex rod The one or more of soil, organobentonite or calcined kaolin, described pigment is rutile type titanium white.
4. a kind of composite metal roof insulation water-repellent paint according to claim 1, it is characterised in that described is inorganic Filler is the one or more in quartz sand, calcium carbonate or talcum powder, and described pH value regulator is adjusted for organic amine pH value Agent, described antifreeze are alcohols antifreeze, and described thickener is hydroxyethyl cellulose, methylcellulose or carboxymethyl cellulose One or more in element.
A kind of 5. composite metal roof insulation water-repellent paint according to claim 1, it is characterised in that it is described into Film auxiliary agent is ester alcohol class coalescents.
6. a kind of composite metal roof insulation water-repellent paint according to claim 1, it is characterised in that described is hollow Glass microballoon is high intensity hollow glass micropearl, and main component is silica.
A kind of 7. composite metal roof insulation water-repellent paint according to claim 1, it is characterised in that described propylene The glass transition temperature of yogurt liquid is between -10 DEG C to -40 DEG C.
8. a kind of preparation method of composite metal roof insulation water-repellent paint as claimed in claim 1, it is characterised in that should Method includes the preparation of investment precoat and two steps of preparation of base layer dope,
Investment precoat mixes dispersant, defoamer, pigment dissolved when preparing in total amount 50-70wt% water, and grinding is uniform, Add inorganic thixotropic thickening agent, inorganic filler, fluorine-silicon modified acrylic emulsion, coalescents stir, then add acrylic acid Emulsion, pH value regulator, thickener are well mixed to be eventually adding hollow glass micropearl and remaining water stirs;
Dispersant, defoamer, pigment, heat conduction functional stuffing are dissolved in the 40-50wt% water of total amount by base layer dope when preparing It is well mixed, add inorganic thixotropic thickening agent, inorganic filler, fluorine-silicon modified acrylic emulsion, coalescents stir, Ran Houjia Enter acrylic emulsion, pH value regulator, thickener is well mixed to be eventually adding remaining water and stir.
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