CN102816465B - Novel mineral reflective thermal insulation coating for architecture and preparation method thereof - Google Patents
Novel mineral reflective thermal insulation coating for architecture and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a novel mineral reflective thermal insulation coating for architecture and a preparation method thereof. The coating comprises, by weight, 0.1-0.6% of a thickener, 0.2-1.2% of an antifoaming agent, 0.1-0.5% of a dispersing agent, 0.5-1.0% of a stabilizer, 6.0-20.0% of functional pigments, 5.0-27.0% of fillers, 4.0-10.0% of a modified emulsion with a concentration of 46-50wt%, 15.0-23.0% of potassium silicate with a concentration of 28-32wt%, 1.0-5.0% of a water repellent agent, 6.0-10.0% of ceramic microbeads, 0-1.5% of a rheological agent and the balance water. According to the coating and the preparation method thereof, defects of latex type reflective thermal insulation coatings are overcome, national standards are accorded with, and the advantages of being energy-saving, economical, environment-friendly, low-carbon, flame retardant, high temperature resistant, good anti-aging and anti-contamination performances and the like of inorganic coatings are maintained.
Description
Technical field:
The present invention relates to a kind of coating and preparation method thereof, more particularly, relate to a kind of mineral reflective heat-insulation paint for building and preparation method thereof.
Background technology:
Along with the release of every national Building Energy Conservation Policy, the raising of public security department to the fire protection requirement of architectural exterior insulation material, the traditional architecture energy-saving materials such as existing thermal insulation mortar and EPS outer heat preservation system because of the disadvantage such as leak, easily come off inflammable, easy to crack day by day obvious, and construct loaded down with trivial details, cost is high, be unsuitable for the construction of abnormal complex structure.A large amount of plate seams form heat bridge, are difficult to the energy-saving effect of further raising system.
Reflective heat-insulation paint for building has obvious advantage as a kind of novel environmental type energy-saving building materials compared with traditional energy-saving building materials.But latex type reflective heat-insulation paint and basic unit be only one deck epithelium against the chemical hydrogen bonded of physical adherence, intermolecular forces and part, under the effect of interior water, being with the passing of time heated is easy to bubbling, cracking, flakey and comes off or efflorescence.Only 250 ℃ of low temperature of ability of this kind of coating, it is more than 400 ℃ that organic binder bond volatilizees or charing, and film destroys, and the function of coating also disappears and takes off thereupon.
Summary of the invention:
The present invention is exactly for the problems referred to above, and a kind of environmental protection, fire-retardant, resistant to elevated temperatures mineral reflective heat-insulation paint for building and preparation method thereof are provided.
In order to realize above-mentioned purpose of the present invention, the present invention adopts following technical scheme: take potassium silicate as main film forming matter, (water-soluble, transparency is high, refraction coefficient is low, not carbon containing, need not organic film coalescence aid, has guaranteed that coating film has high reflectivity to sunlight heat); To play on a small quantity the low Tg value low elasticity emulsion of modifying function, as auxiliary film forming matter, (it both made potassium silicate stable as the protective colloid of potassium silicate, also in order to strengthen the wet cohesiveness of coating.Elastic emulsion particle has played " bridge formation " effect in the time of coating film forming, the be full of cracks that while having cushioned silicic acid particle film forming, contingent synersis causes, and the while has also strengthened the water resistant perviousness of film.By this kind of emulsion without film coalescence aid, thereby reached environmental protection, low-carbon (LC) requirement); And be aided with auxiliary agent (thickening material, dispersion agent, defoamer, stablizer, hydrophobizing agent, rheological agent etc.), functional color stuffing is formulated.
Its composition and weight proportion, count with 100%: thickening material 0.1～0.6%; Defoamer 0.2～1.2%; Dispersion agent 0.1～0.5%; Stablizer 0.5～1.0%; Functional pigment 6.0～20.0%; Filler 5.0～27.0%; Concentration is the modified emulsion 4.0～10.0% of 46～50wt%; Concentration is the potassium silicate 15.0～23.0% of 28～32wt%; Hydrophobizing agent 1.0～5.0%; Ceramic fine bead 6.0～10.0%; Rheological agent 0～1.5%; Surplus is water.
Its composition and weight proportion, be preferably in 100%: thickening material 0.2%; Defoamer 0.3%; Dispersion agent 0.2%; Stablizer 0.5%; Functional pigment 15.0%; Filler 20.0%; Concentration is the modified emulsion 8.5% of 50wt%; Concentration is the potassium silicate 21.0% of 30wt%; Hydrophobizing agent 1.0%; Ceramic fine bead 10.0%; Rheological agent 1.0%; Surplus is water.
One or both in the carboxymethyl cellulose that described thickening material is the Natvosol of viscosity 10000～30000mpas, xanthan gum that viscosity is 10000～30000mpas, viscosity is 10000～30000mpas.
Described defoamer is one or both in mineral oils, whiteruss class, oil-in-water-type polysiloxane-polyethers.
Mineral oils has Inocot610, Testbenzin K30, Agitan232, and whiteruss class has Foamex KS10, Agitan280, and oil-in-water-type polysiloxane-polyethers is TEGO foamex7447.
Described dispersion agent is potassium pyrophosphate or organic phosphoric acid potassium.
Potassium pyrophosphate is Lopon826, polyron TK, and organic phosphoric acid potassium is Lopon895, Sapetin D20.
Described stablizer is quaternary amine alkali or its modifier, is Lopon ST, Betolin Quart10, Betolin Quart15, Betolin Quart20, Betolin Quart25.
Described functional pigment is titanium dioxide, nickel titanium yellow, cobalt aluminate, chromoxide green, iron oxide red, iron oxide yellow or iron oxide black.
Titanium dioxide is R-902, R-706, CR501, R-575.
Described filler is the calcite of purity >=95%, whiteness >=95%, coarse whiting, chalk, silicate, barite, two or more in process white.
Silicate is wollastonite, mica powder or talcum powder.
Its particle diameter of described titanium dioxide is the spherical easy dispersion product of 0.001～0.3 micron.
Described modified emulsion be solid content 46～50%, saponification value 48～52mgkoH/g, Tg value is one or both in the benzene emulsion, pure-acrylic emulsion, organosilicon crylic acid latex of 0～8 ℃ of low elasticity;
Described potassium silicate be neutral several M that rub in 3≤M≤4, be 28～32% solid containing, sodium ions content is 0～0.1%.
Described hydrophobizing agent is one or both in alkylsilanol potassium, poly-alkylsiloxane emulsion, paraffin wax emulsions, stearic alcohols.
Alkylsilanol potassium is Wacker BS16, Betolin A11, TEGO SKS10, TEGOsivin K/M, poly-alkylsiloxane emulsion is Wacker BS1306, TEGO-phobe SK262, paraffin wax emulsions is Wukonil GL, and stearic alcohols is Lubranil A1520.
Described ceramic fine bead particle diameter is the hollow beads of 0.001～100 micron.
Described rheological agent is one or both in urethane, polyether glycol, is Rheolate350, Rheolate310.
Described water is distilled water or deionized water.
Concrete preparation process is:
(1) slurrying
According to described formula ratio, to 79.0～86.5% water, the thickening material that disperse to add successively in cylinder water gross weight, be stirred to completely and dissolve; Then add 2/3rds of defoamer weight, dispersion agent, stablizer, continue to be stirred to evenly; Then add functional pigment, filler in mixed solution; Finish, disperse the material of axle and casing wall to clean in cylinder with the water that accounts for water gross weight 4.6～6.8% by sticking in; Be under the condition of 1400～2000 revs/min at mixing speed, high speed dispersion 16～20 minutes.
Then, rotating speed is down to 400～600 revs/min, adds modified emulsion, stir after 5～10 minutes and shut down, promote and stir out liquid level, clean stirring, casing wall in cylinder with remaining water.
(2) painting
Cylinder is transferred under paddle stirrer, adjusts the pH value to 10 of slurry, under 300～400 revs/min of rotating speeds, adding concentration is the potassium silicate solution of 30wt%, stirs 5～10 minutes; Add again hydrophobizing agent, stir 2-3 minute; Then, add ceramic fine bead, after ceramic fine bead is all wetting, then add 1/3rd remaining defoamers, continue to stir 5 hours to evenly still in 200～300 revs/min.
The viscosity of adjusting system take rheological agent, as 85～95KU, finally adds mill base to mix colours, and continues to stir, and then crosses 80 mesh sieves, and weighing and bagging is finished product.
In step (2), use the potassium hydroxide of 20wt% or the pH value of Lopon ST adjustment system.
In order to make film more firm, tight in conjunction with obtaining after petrochemical industry is reacted with basic unit, design seal coat (thinner of the fabric of holding concurrently), to permeate and petrochemical industry reaction reinforcing basic unit occur and play the crosslinked petrifaction of forming a connecting link.
Mineral reflective heat-insulation paint for building must support the use with supporting seal coat (thinner of the fabric of holding concurrently).
Fabric construction when survives for twice, must " wet touch wet " construction, i.e. and first pass and be separated by for second time 5 hours and must assurance construction norm, completes in latter 48 hours and must not meet rain.
When actual use, composition and the weight proportion of supporting bottom closing paint (the fabric thinner of holding concurrently) are: the Acronal ECO502 (low elasticity of 50wt%; Tg, 5 ℃; Saponification value 49; Purchased from BASF) 10.0%; The potassium silicate (purchased from Beijing Ao Han Chemical Co., Ltd.) 25.0～35.0% of 30wt%; Lopon ST (purchased from Bake lucky Buddhist nun company) 0.5～1.0%; Inocot610 (purchased from German Fan Bairou silicate product company) 0.05～0.10%; Surplus is pure water.
Preferred composition and the weight proportion of supporting seal coat (thinner of the fabric of holding concurrently) are: the Acronal ECO50210.0% of 50wt%; The potassium silicate 35.0% of 30wt%; Lopon ST0.8%; Inocot610 is 0.05%; Surplus is pure water.
Beneficial effect of the present invention:
The present invention has avoided the disadvantage of latex type reflective heat-insulation paint, has both met national standard, has kept again that inorganic paint is energy-conservation, the feature such as economy, environmental protection, low-carbon (LC), fire-retardant, high temperature resistant, anti-aging and anti-stain characteristic are good.Became one properties excellence by reacting with the petrochemical industry of mineral basic unit with basic unit.
1, energy-saving and environmental protection are fabulous
Potassium silicate binding agent is water miscible, and the present invention is water-based, take water as dispersion medium.Its moiety is nontoxic, tasteless, non-environmental-pollution.Manufacturing, store, constructing of coating can not emitted peculiar smell, without irritated feature, do not damage people and biological health.Low-carbon (LC), energy-saving and environmental protection are fabulous.Paint but uses a large amount of resins and organic solvent; Emulsion paint uses a large amount of organic emulsions and film coalescence aid; Energy consumption is large, high carbon emission, and contaminative is large, and the present invention does not have the problems referred to above.
2, good economy performance, resource is almost unlimited
In the earth earth's crust, the abundance of oxygen accounts for 49.13% (quality Clarke number %, lower same), and the abundance of silicon accounts for 26%, and the abundance of carbon accounts for 0.03%, and the abundance of hydrogen accounts for 0.14%.The earth's crust is nearly all made up of silicate and silicon-dioxide, and its reserves can describe with Clarke number.(Clarke, Americanized scholar.Clarke number is that this numeral is far longer than astronomical figure with the elemental abundance of atomicity representative).The source of Here it is potassium silicate raw material processed.
And as some animals and plants (being substantially all hydrocarbon polymer) on oil, coal and earth's surface in the stratum of paint, emulsion paint raw material, its reserves cannot be compared with rock.
3, the present invention is Carbon Dioxide in Air curing, manufacture easy, and perviousness fabulous (can reach 0.5～2.0mm), with silicate minerals basic unit (as brick, stone, cement sand plaster, concrete etc.), silication (being petrochemical industry) occurs and react the stone being combined into one with siloxane bond, and performance is identical.There is identical expansion/coefficient of dilatation, can reflected light and thermal radiation and reduce the thermal pressure that buildings bears, prevent the be full of cracks that building surface causes because expanding with heat and contract with cold.The bond energy of the silicone atom key that petrochemical industry reaction generates is than the bond energy large (in table 1) with carbon-to-carbon combination between organic high molecular polymer atom, larger than intermolecular forces and hydrogen bond force.Therefore, hard, the wear-resisting and shock resistance of film of the present invention.
Table 1
As can be seen from Table 1, the bond energy of silica combination is than the large 119kJ/mol of bond energy (466-347) of carbon carbon combination; Than the large 53kJ/mol of hydrocarbon bond energy (466-413).
4, resin content of the present invention, below 5%, meets low-carbon (LC) requirement.And the resin particle absorption combination of the active silicic acid particle in reaction and active silica particle and emulsion, wrap up, and infiltration therein, make film reach difficulty and fire or do not fire, high temperature (in table 2) that can resistance to 800 ℃; And latex type coating, only 250 ℃ of heatproofs.Testing method is, the accurate uralite of label taking, and the coating while brush coating that generic latex paint, contrast sample (conventional latex type reflective heat-insulation paint for building on the market) and embodiment 1 are made two times, seasoning seven days, heatproof is 10 minutes.
Table 2
5, the resistance to solvent of the present invention, oil resistant dirt are strong, and film pollution rate is little, film hardly can because of ultraviolet ray and radioactive rays aging.
Because coating is strong basicity, therefore have anticorrosion, mildew-resistant and sterilizing ability, the mildew of can not growing.This coating can seal, reinforce capillary fracture and the inanimate matter surface of the porous that gets loose.
Steam breathability of the present invention is good, has again fabulous water-repellancy, can make building surface keep dry.
Pigment used is all acidproof, alkaline-resisting, weather-proof, ultraviolet-resistant aging, resistant to elevated temperatures inorganics, therefore prolonged colour-fast.The film of half dumb light makes color soft, beautiful.
6, effect of heat insulation of the present invention is stable.
Current, lagging material by industrial heat-insulation and heat-preservation be main be main transformation to building heat insulation.Buildings brushing thermal insulating external wall coating is one of Simple energy-saving mode of current building energy conservation.The present invention meets and exceedes GB GB/T25261-2010 " reflective heat-insulation paint for building " standard.It utilizes the exotic materials combination in film, and light and heat is had to very high double-sided reflecting and dissipation effect, greatly reduces the surface temperature that is coated with building, has again very low thermal conductivity.In summer, not only can reduce the temperature difference expansion/contraction distortion that structure thermal stress causes, improves the cracking resistance of structure, impervious and weather resistance, and can significantly reduce by roof and exterior wall and import indoor heat into.In winter, the inner face that indoor heat can be reached to reflective heat-insulation paint film by body of wall is reflected back indoor, has avoided heat loss, has guaranteed indoor original temperature, makes room cool in summer and warm in winter, has improved the cold and hot level of comfort of environment, has saved the energy.In film, compact arranged cenosphere is a complete hollow sealing coat, not only has good effect of heat insulation, also has excellent sound insulation function, can significantly reduce external noise, makes room peace and quiet.
The present invention is that a kind of thin layer is efficient, energy-saving and environmental protection, noise resistance, high rigidity, the excellent coating of aging-resistant, should widely popularize.
Embodiment:
Embodiment 1
(1) slurrying
To disperseing to add successively water 178.0g, Natrosol250MHR (purchased from Titan Corporations of the U.S.) 2.0g in cylinder, be stirred to completely and dissolve; Then add Inocot610 (purchased from German Fan Bairou silicate product company) 2.0g, Lopon826 (purchased from German Bake lucky Buddhist nun company) 2.0g, Lopon ST (purchased from German Bake lucky Buddhist nun company) 5.0g, continue to be stirred to evenly; Then add titanium dioxide R-706 (purchased from E.I.Du Pont Company) 150.0g, particle diameter are coarse whiting (purchased from the Haicheng Heshan company) 100.0g of 1.1 μ m, coarse whiting (purchased from Haicheng Heshan company) 40.0g that particle diameter is 10 μ m, particle diameter is 12 μ m wollastonite (purchased from Jilin pear tree wollastonite company limited) 60.0g in mixed solution; Finish, disperse the material of axle and casing wall to clean in cylinder with reserved water 15.0g by sticking in; Be under the condition of 1400-2000 rev/min at mixing speed, high speed dispersion 18 minutes.
Then, rotating speed is down to 400-600 rev/min, adding mass concentration is the benzene emulsion Acronol ECO502 (Tg of 50wt%; 5 ℃, saponification value 49, purchased from BASF AG) 85.0g, stirs after 10 minutes and shuts down; Then promote and stir out liquid level, clean stirring, casing wall in cylinder with remaining water 30.0g;
(2) painting
Cylinder is transferred under paddle stirrer, adjusts the pH value to 10 of slurry with the potassium hydroxide of 20wt%, under rotating speed 300-400 rev/min, adding concentration is the potassium silicate solution AH-K of 30wt%
1(purchased from Beijing Ao Han Chemical Co., Ltd., M=3.96; Sodium ion, 0.093%) 210.0g, stirs 10 minutes; Add again BS1306 (purchased from German Wa Ke company) 10.0g, stir 2-3 minute; Then, add ceramic fine bead T40 (purchased from Zhong Gang mine research institute, m) 100.0g of particle diameter 2-85 μ; After ceramic fine bead is all wetting, then add Inocot610 (purchased from German Fan Bairou silicate product company) 1.0g, continue to stir 5 hours to evenly still in 200-300 rev/min.
The viscosity that adds Rheolate310 (purchased from this company of U.S.'s hamming) 10.0g to adjust system is 95KU; Finally add mill base to mix colours, continue to stir, then cross 80 mesh sieves, weighing and bagging is finished product.
Embodiment 2
(1) slurrying
To disperseing to add successively in cylinder the Natvosol that water 185.6g, viscosity are HS30000yp (purchased from German Clariant company) 2.4g, be stirred to completely and dissolve; Then add Inocot610 (purchased from German Fan Bairou silicate product company) 2.0g, Lopon895 (purchased from German Bake lucky Buddhist nun company) 2.0g, Lopon ST (purchased from German Bake lucky Buddhist nun company) 5.0g, continue to be stirred to evenly; Then add titanium dioxide CR-501 (purchased from Jinzhou titanium dioxide company limited) 120.0g, particle diameter are calcite (purchased from the Haicheng Heshan company) 150.0g of 0.7 μ m, calcite (purchased from Haicheng Heshan company) 77.0g that particle diameter is 5 μ m, particle diameter is 38 μ m mica powder (purchased from Chuzhou Ge Rui company) 1g in mixed solution; Finish, disperse the material of axle and casing wall to clean in cylinder with reserved water 10.0g by sticking in; Be under the condition of 1400-200 rev/min at mixing speed, high speed dispersion 20 minutes.
Then, rotating speed is down to 400-600 rev/min, adding mass concentration is the benzene emulsion Acronol ECO50265.0g (saponification value 49 of 50wt%; Tg, 5 ℃; Purchased from BASF AG), stir after 5 minutes and shut down, promote and stir out liquid level, clean stirring, casing wall in cylinder with remaining water 20.0g.
(2) painting
Cylinder is transferred under paddle stirrer, and the pH value to 10 of adjusting slurry with Lopon ST (purchased from German Bake lucky Buddhist nun company) adds potassium silicate solution AH-K under rotating speed 300-400 rev/min
1(purchased from Beijing Ao Han Chemical Co., Ltd., 29%; M=3.94, sodium ions content 0.086%) 225.0g, stirs 5 minutes; Add BS16 (purchased from German Wa Ke company) 10.0g to stir 3 minutes; Then, add ceramic fine bead T40 (purchased from Zhong Gang mine research institute, m) 100.0g of 2-85 μ, after ceramic fine bead is all wetting, add again Inocot610 (purchased from German Fan Bairou silicate product company) 1.0g, continue to stir 5 hours to evenly still in 200-300 rev/min.
The viscosity that adds Rheolate310 (purchased from this company of U.S.'s hamming) 5.0g to adjust system is 85KU; Finally add mill base to mix colours, continue to stir, then cross 80 mesh sieves, weighing and bagging is finished product.
Embodiment 3 coating property tests
Chinese Research Institute for Building Sciences and the Chinese Academy of Space Technology combine to be detected embodiment 1, the results are shown in Table 3, embodiment, 1 properties and is all better than national technical indicator.
Table 3
Fill a prescription coating that pilot scale makes for x-ray fluoroscopy chamber, Panjin City Xinglongtai District disease prevention and control center by embodiment 1.Long 15.24 meters of this buildings, wide 4.64 meters, high 3.2 meters.Roof is mazarine curved surface color steel, and outer facade is the old emulsion paint of light gray.Total brushing area approximately 260 ㎡ of top and outer facade.Construction adopts roller coat, first brushes seal coat together, dry after (about 20min) by fill a prescription pilot product roller coat one time of embodiment 1, interval 12h roller coat completely hides and survives for second time.In 48h, avoid meeting rain.Before and after completion, measure of merit is in table 4.
Table 4
As can be seen from Table 4, the color steel roof temperature before and after decorating has declined 24.2 ℃, and the outer facade temperature in east declines 28.2 ℃, and room temperature declines 7 ℃.Hotter July 4,10.6 ℃ (same unadorned cabin, color steel temperature in roof is 47.2 ℃ on the same day) of roof temperature decline, room temp is 23.5 ℃, still keeps nice and cool than low 5.5 ℃ of ambient temperature.Visible cooling energy-saving is fairly obvious.
Embodiment 4
Embodiment 1 is contrasted with the reflective insulation performance of contrast sample, the results are shown in Table 5.
Table 5
Above-mentioned project is the leading indicator of coating heat-proof quality, and as shown in Table 5, the technical indicator of embodiment 1 is all better than contrasting sample, and therefore, the heat-proof quality of embodiment 1 is obviously better than contrasting sample.
The test of embodiment 5 reflective heat-insulation paint consumptions
Testing method is:
(1) get 36 of 420 × 300 × 4 standard cement asbestos plates, be polished flat gently fiber crops, dedusting in smooth one side with 120 order sand paper.Be coated with and brush one times with embodiment 1 and contrast sample supporting seal coat separately, under normal temperature, be dried two hours; Then embodiment 1 is respectively got to 1000 grams with contrast sample and be placed in two sealable little plastic tanks, punching is released to 30 seconds (being coated with 4 glasss) spray viscosities.
(2) respectively by 75 μ m, 80 μ m ... each thickness of 250 μ m, the one side of three of parallel samples of spraying, back side blank, seasoning one week is to be measured.
(3) dried cement asbestos test plate (panel) is put into airtight test box, test plate (panel) to be measured is tested by being thinned to the horizontal grillage of thick insertion one by one one by one by coating thickness, spray the one side of coating upwards, upper and lower position is put into in thermopair termination, opening incandescent light irradiates 10 minutes test panel, open thermocouple thermometer, record above and below temperature, the temperature head of top and bottom is in table 6.
Table 6
As can be seen from Table 6, when same coating thickness, the temperature difference of embodiment 1 is greater than the temperature difference that contrasts sample, illustrates that embodiment 1 heat-insulating cooling effect is apparently higher than contrast sample.When 100 microns of embodiment 1 brushing thickness, can reach the effect of reflective insulation.And contrast sample needs 200 microns, reflective insulation effect could be basicly stable.This explanation embodiment 1 and contrast sample are in the time being up to state standards equally, and embodiment 1 coating content used is only the half left and right of contrast sample, and this greatly reduces use cost.
Claims (9)
1. a mineral reflective heat-insulation paint for building, is characterized in that, its composition and weight proportion are counted thickening material 0.1～0.6% with 100%; Defoamer 0.2～1.2%; Dispersion agent 0.1～0.5%; Stablizer 0.5～1.0%; Functional pigment 6.0～20.0%; Filler 5.0～27.0%; Concentration is the modified emulsion 4.0～10.0% of 46～50wt%; Concentration is the potassium silicate 15.0～23.0% of 28～32wt%; Hydrophobizing agent 1.0～5.0%; Ceramic fine bead 6.0～10.0%; Rheological agent 0～1.5%; Surplus is water; Described modified emulsion be solid content 46～50%, saponification value 48～52mgkoH/g, Tg value is one or both in the benzene emulsion, pure-acrylic emulsion, organosilicon crylic acid latex of 0～8 ℃ of low elasticity; Described potassium silicate be neutral several M that rub in 3≤M≤4, be 28～32% solid containing, sodium ions content is 0～0.1%.
2. mineral reflective heat-insulation paint for building according to claim 1, is characterized in that, its composition and weight proportion are counted thickening material 0.2% with 100%; Defoamer 0.3%; Dispersion agent 0.2%; Stablizer 0.5%; Functional pigment 15.0%; Filler 20.0%; Concentration is the modified emulsion 8.5% of 50wt%; Concentration is the potassium silicate 21.0% of 30wt%; Hydrophobizing agent 1.0%; Ceramic fine bead 10.0%; Rheological agent 1.0%; Surplus is water.
3. mineral reflective heat-insulation paint for building according to claim 1, is characterized in that,
One or both in the carboxymethyl cellulose that described thickening material is the Natvosol of viscosity 10000～30000mpas, xanthan gum that viscosity is 10000～30000mpas, viscosity is 10000～30000mpas;
Described defoamer is one or both in mineral oils, whiteruss class, oil-in-water-type polysiloxane-polyethers.
4. mineral reflective heat-insulation paint for building according to claim 1, is characterized in that,
Described dispersion agent is potassium pyrophosphate or organic phosphoric acid potassium;
Described stablizer is quaternary amine alkali or its modifier.
5. mineral reflective heat-insulation paint for building according to claim 1, is characterized in that,
Described functional pigment is titanium dioxide, nickel titanium yellow, cobalt aluminate, chromoxide green, iron oxide red, iron oxide yellow or iron oxide black;
Described filler is the calcite of purity >=95%, whiteness >=95%, coarse whiting, chalk, silicate, barite, two or more in process white.
6. mineral reflective heat-insulation paint for building according to claim 5, is characterized in that, described titanium dioxide is that particle diameter is the spherical easy dispersion product of 0.001～0.3 micron.
7. mineral reflective heat-insulation paint for building according to claim 1, is characterized in that,
Described hydrophobizing agent is one or both in alkylsilanol potassium, poly-alkylsiloxane emulsion, paraffin wax emulsions, stearic alcohols;
Described ceramic fine bead is that particle diameter is the hollow beads of 0.001～100 micron;
Described rheological agent is one or both in urethane, polyether glycol;
Described water is distilled water or deionized water.
8. a preparation method for mineral reflective heat-insulation paint for building claimed in claim 1, is characterized in that, concrete preparation process is:
(1) slurrying
According to formula ratio described in claim 1, to 79.0～86.5% water, the thickening material that disperse to add successively in cylinder water gross weight, be stirred to completely and dissolve; Then add 2/3rds of defoamer weight, dispersion agent, stablizer, continue to be stirred to evenly; Then add functional pigment, filler in mixed solution; Finish, disperse the material of axle and casing wall to clean in cylinder with the water that accounts for water gross weight 4.6～6.8% by sticking in; Be under the condition of 1400～2000 revs/min at mixing speed, high speed dispersion 16～20 minutes;
Then, rotating speed is down to 400～600 revs/min, adds modified emulsion, stir after 5～10 minutes and shut down, promote and stir out liquid level, clean stirring, casing wall in cylinder with remaining water;
(2) painting
Cylinder is transferred under paddle stirrer, adjusts the pH value to 10 of slurry, under 300～400 revs/min of rotating speeds, adding concentration is the potassium silicate solution of 30wt%, stirs 5～10 minutes; Add again hydrophobizing agent, stir 2-3 minute; Then, add ceramic fine bead, after ceramic fine bead is all wetting, then add 1/3rd remaining defoamers, continue to stir 5 hours to evenly still in 200～300 revs/min;
The viscosity of adjusting system take rheological agent, as 85～95KU, finally adds mill base to mix colours, and continues to stir, and then crosses 80 mesh sieves, and weighing and bagging is finished product.
9. the preparation method of mineral reflective heat-insulation paint for building according to claim 8, is characterized in that, uses the potassium hydroxide of 20wt% or the pH value of Lopon ST adjustment system in step (2).
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| CN103881426A (en) * | 2013-06-07 | 2014-06-25 | 赵志海 | High-temperature-resistant heat insulation coating |
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| CN111269595A (en) * | 2020-03-26 | 2020-06-12 | 江西天态建材有限公司 | Flame-retardant reflective heat-insulation texture coating and preparation method thereof |
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| CN101250343B (en) * | 2008-04-03 | 2010-06-02 | 金小刚 | Polymer microsphere insulation heat-proof dry-powder paint |
| KR100953827B1 (en) * | 2008-04-25 | 2010-04-20 | 장동주 | Watersoluble ceramic paint composition having improved heat-block quality at high temperature |
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