CN101210146B - Composition of reflective insulation dope, double-layer heat insulation dope and preparing method thereof - Google Patents
Composition of reflective insulation dope, double-layer heat insulation dope and preparing method thereof Download PDFInfo
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- CN101210146B CN101210146B CN200610172322XA CN200610172322A CN101210146B CN 101210146 B CN101210146 B CN 101210146B CN 200610172322X A CN200610172322X A CN 200610172322XA CN 200610172322 A CN200610172322 A CN 200610172322A CN 101210146 B CN101210146 B CN 101210146B
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Abstract
The invention provides a composition of reflection thermal insulation coatings, a double-layer thermal insulation coating and a preparation method thereof. The double-layer thermal insulation coating comprises a porous thermal insulation layer and a reflection thermal insulation layer formed over the porous thermal insulation layer. In the double-layer thermal insulation coating, the reflectivity of the reflection thermal insulation layer towards visible light and near infrared is more than 96 percent and the coefficient of heat conduction of the porous thermal insulation layer is between 0.01 to 0.03W/m.k. Furthermore, the coefficient of heat conduction of the double-layer thermal insulation coating is between 0.01-0.05W/m.k.
Description
Technical field
The present invention is about thermal insulating coating, particularly about a kind of double thermal insulation coating with high heat-insulating capability.
Background technology
Thermal insulating coating can be widely used in dwelling house, factory building, vehicle, boats and ships, grain warehouse storehouse and petrochemical complex storage tank, and isolated extraneous heat energy is to keep inner lower temperature.The general thermal insulating coating that uses can add the Ceramic Balls weighting material of time micron/micron, to increase the heat-insulating capability of thermal insulating coating.Yet above-mentioned Ceramic Balls only can reduce the heat-conduction coefficient of thermal insulating coating limitedly, and the heat-conduction coefficient of above-mentioned thermal insulating coating is generally between 0.1～0.3W/m.k, and the reflectivity of thermal insulating coating is between 80～90%.Generally speaking, if will reduce the decline that heat-conduction coefficient all can cause reflectivity.
Therefore, needing badly will a kind of thermal insulating coating that has low heat conduction coefficient and high-reflectivity simultaneously.
Summary of the invention
In view of this, one of the present invention purpose is for providing a kind of composition of reflective heat-insulation paint.The composition of above-mentioned reflective heat-insulation paint comprises resin, and it accounts between the 30wt% to 60wt% of this reflective heat-insulation paint gross weight; The powder weighting material, it accounts between the 5wt% to 30wt% of this reflective heat-insulation paint gross weight; The hollow ball weighting material, it accounts between the 10wt% to 55wt% of this reflective heat-insulation paint gross weight; And tackiness agent, it accounts between the 10wt% to 20wt% of this reflective heat-insulation paint gross weight.In above-mentioned reflective heat-insulation paint, tackiness agent can coat the surface of hollow weighting material, and can be bonded to each other between each hollow weighting material that is coated by tackiness agent, forms transparent film with the near surface at reflective heat-insulation paint.When the rayed reflective heat-insulation paint in the external world, can reflex to the external world by the reflection weighting material more earlier through above-mentioned transparent film, with the reflectivity that promotes reflective heat-insulation paint at least greater than 96%.
Another object of the present invention is provides a kind of double thermal insulation coating, and it comprises the porousness thermal insulation layer; And the reflective insulation layer, be formed at the top of this porousness thermal insulation layer.Above-mentioned double thermal insulation coating, wherein the porousness thermal insulation layer more comprises, aerogel powder, it accounts between the 20wt% to 30wt% of this porousness thermal insulation layer gross weight; Dispersion liquid, it accounts between the 0.1wt% to 1wt% of this porousness thermal insulation layer gross weight; Tackiness agent, it accounts between the 10wt% to 20wt% of this porousness thermal insulation layer gross weight; And first resin, it accounts between the 40wt% to 60wt% of this porousness thermal insulation layer gross weight, and the viscosity of this first resin is between 500 to 1500 centipoises.Above-mentioned double thermal insulation coating, wherein the reflective insulation layer comprises second resin, and it accounts between the 30wt% to 60wt% of gross weight; The powder weighting material, it accounts between the 5wt% to 30wt% of gross weight; The hollow ball weighting material, it accounts between the 10wt% to 55wt% of gross weight; And tackiness agent, it accounts between the 10wt% to 20wt% of gross weight.In above-mentioned double thermal insulation coating, the reflective insulation layer has reflectivity to visible light and near infrared light greater than 96%, and the heat-conduction coefficient of porousness thermal insulation layer is between 0.01 to 0.03W/m.k.Moreover the heat-conduction coefficient of double thermal insulation coating is between 0.01～0.05W/m.k.
The formation method that another object of the present invention is coated with for a kind of double thermal insulation is provided, it comprises provides base material.Then, form the porousness thermofin on this base material, and form the top of reflective insulation layer again in above-mentioned porousness thermofin.
Description of drawings:
Fig. 1 is the synoptic diagram of the double thermal insulation coating of one embodiment of the invention, and wherein 1 is double thermal insulation coating; 2 is base material;
5 is thermal insulation layer;
10 are the reflective insulation layer;
15 is the hollow ball weighting material;
20 is the reflective powder weighting material;
25 is the nanoporous weighting material.
Embodiment
The preparation of porousness thermal insulation layer
With the mixed with resin stir about of the tackiness agent (binder) of the dispersion liquid of aerogel (aerogel) powder of 20wt% to 30wt% (gross weight with the porousness thermal insulation layer is a benchmark), 0.1wt% to 1wt%, 10wt% to 20wt% and 40wt% to 60wt% 0.3 to 0.8 hour, with preparation porousness thermal insulation layer.
In preferred embodiments, above-mentioned aerogel powder is preferably nano level size, and can be silicon oxide (silicon oxide) for example, the mineral-type aerogel powder of titanium dioxide (titanium dioxide) or zirconium white (zirconiumoxide), also can be carbon for example, resorcinol formaldehyde (resorcinolformaldehyde), organic class aerogel powder of urethane (polyurethane) or polystyrene (polystyrene), and the mixture of above-mentioned organic aerogel powder and inorganic gel powder, after the nanometer processing via for example sol-gel method (sol-gel), prepared nanoporous aerogel powder.
Above-mentioned mode with Prepared by Sol Gel Method nanoporous aerogel powder, in the embodiment of silicon oxide that silane oxide or silicon salt is soluble in water, (Hydrolysis) and condensation (Condensation) reaction that is hydrolyzed is to form silica gel.Then, silica gel is carried out drying and calcination processing, to form nano oxidized Si powder.The specific surface area of above-mentioned nanoporous aerogel powder preferably can be between between the 400m2/g to 1200m2/g.
Above-mentioned dispersion liquid preferably can be polyvinylpyrrolidone (Polyvinylpyrrolidone; PVP), and molecular weight ranges is between 20000g/mole～60000g/mole, and wherein above-mentioned dispersion liquid preferably can be the solution that with ethanol (industrial ethyl alcohol) the polyvinylpyrrolidone dissolving is formed earlier.In preferred embodiments, above-mentioned tackiness agent can be the alkyd of for example poly-ethanol or propylene, and the water that adds 1～5 times of alkyd forms.The molecular weight ranges of above-mentioned tackiness agent is preferably between between the 80000g/mole to 90000g/mole.
In one embodiment, the stable on heating in this way resin of above-mentioned resin preference, and can be for example polymethylmethacrylate (also can be described as acryl resin), propylene-styrene resin or acrylonitril butadiene styrene resin, and the viscosity of above-mentioned resin can be between 500 to 1500 centipoises, preferably is about 1000 centipoises.
Because, above-mentioned porousness thermal insulation layer has and is preferably greater than 90% porosity, and the porousness thermal insulation layer has preferred pore diameter range between 10 to 30 nanometers, makes the heat-conduction coefficient scope of porousness thermal insulation layer preferably to be about 0.018W/m.k between 0.01 to 0.03W/m.k.Therefore, above-mentioned porousness thermal insulation layer has good heat insulating function.
Merit attention is in the preparation of above-mentioned porousness thermal insulation layer, also can optionally add carbon black particle, to reduce the infrared radiation heat biography of porousness thermal insulation layer more.
The preparation of reflective heat-insulation paint
Hollow ball weighting material, the powder weighting material of 5wt% to 30wt% and the dispersion liquid of 0.1wt% to 1wt% that will about 10wt% to 55wt% (gross weight with reflective heat-insulation paint becomes benchmark) place container, mix stirring.Then, the tackiness agent that adds about 10% to 20wt% (gross weight with reflective heat-insulation paint becomes benchmark) again mixed stir about 0.5 to 1 hour in said vesse, make tackiness agent can coat the surface of hollow ball weighting material.Then, the resin that adds about 30wt%～60wt% (gross weight with reflective heat-insulation paint becomes benchmark) mixed stir about 0.2 to 0.4 hour in said vesse, with the preparation reflective heat-insulation paint.
In addition, the preparation method of above-mentioned reflective heat-insulation paint, also can optionally add the foam-type resin of 5～10wt% (gross weight with reflective heat-insulation paint is a benchmark) before adding resin, with the hole among the increase reflective heat-insulation paint, making increases the effect of heat insulation of reflective heat-insulation paint.Above-mentioned foam-type resin preferably can be Polyurethane (polyurethane; PU), and range of viscosities between 50 to 100 centipoises.
In a preferred embodiment, above-mentioned dispersion liquid can be the solution prepared of polyvinylpyrrolidone (Polyvinylpyrrolidone) and ethanol for example, and main purpose is that the hollow ball weighting material is dispersed among the reflective heat-insulation paint.Above-mentioned tackiness agent can be identical with tackiness agent in the above-mentioned porousness thermal insulation layer.
Above-mentioned hollow ball weighting material preferably can be a borosilicate, and its particle size range can be between 10 to 400 μ m.When above-mentioned borosilicate particle diameter preferably is about 100 μ m, has preferred heat-conduction coefficient condition.And the powder weighting material preferably can be titanium oxide or the zinc oxide with reflection potential, with the weighting material as reflects infrared light.In another preferred embodiment, the powder weighting material also can comprise the weighting material with light reflection ultraviolet ability of zirconium white for example or lime carbonate.In yet another embodiment, also can cooperate and add general weighting material, for example magnesiumcarbonate, lime carbonate or mica, because general weighting material price comparison is cheap, therefore, can not reduce under reflection and the heat-insulating capability, use with reflective powder weighting material and the collocation of hollow weighting material, to reduce cost of manufacture.
In a preferred embodiment, above-mentioned resin can be with above-mentioned porousness thermal insulation layer in identical resin material, but the viscosity of the resin in reflective heat-insulation paint is preferably more than 3000 centipoises.
In above-mentioned reflective heat-insulation paint, tackiness agent can coat the surface of hollow weighting material, and can be bonded to each other between each hollow weighting material that is coated by tackiness agent, forms transparent film with the near surface at reflective heat-insulation paint.When the rayed reflective heat-insulation paint in the external world, can reflex to the external world by the reflection weighting material more earlier through above-mentioned transparent film, (380～2000nm) reflectivity is at least greater than 96% to visible light and near infrared light to promote reflective heat-insulation paint.
The making of double thermal insulation coating
In Fig. 1, provide base material 2.Then, utilize the mode of high pressure painting the porousness thermal insulation layer 5 of above-mentioned preparation to be formed at the top of above-mentioned base material.Afterwards, again with reflective insulation layer 10 high pressure painting of above-mentioned preparation in the top of porousness thermal insulation layer 5, above base material 2, to form double thermal insulation coating 1.Above-mentioned base material 2 preferably can be a metal.In a preferred solid yardage case, the thickness of porousness thermal insulation layer 5 is between 0.2 to 0.25mm, and the thickness of reflective insulation layer 10 is preferably between 0.2 to 0.25mm.
And for example shown in Figure 1, hollow weighting material 15, reflection weighting material 20 and general weighting material 25 are formed among the reflective insulation layer 10, and 15 in hollow weighting material can be bonded to each other, form transparent film with near surface at the reflective insulation layer, making increases the reflectivity of reflective insulation layer 10 reflect visible light and near infrared light at least about 96%, shown in Fig. 1 arrow.Moreover, at the low heat conduction coefficient of the porousness thermal insulation layer 5 below the reflective insulation layer 10 between 0.01 to 0.03W/m.k.
In above-mentioned double thermal insulation coating, because the reflective insulation layer has high-reflectivity, make and to produce heat at the reflective insulation layer substantially, adding bottom porousness thermal insulation layer has high every the adiabatic ability, therefore, the heat transfer transmissibility factor in conjunction with reflective insulation layer and the formed double thermal insulation coating of porousness thermal insulation layer has splendid heat-insulating properties between about 0.01～0.05W/m.k.It should be noted that above-mentioned reflective insulation layer and porousness thermal insulation layer also can be distinctly to separate use, also have reflection and heat insulation ability certainly.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the invention; change and retouching when doing some, so the present invention's protection domain defines and is as the criterion when looking the accompanying Claim scope.
Claims (19)
1. the composition of a reflective heat-insulation paint comprises:
Resin, it accounts between the 30wt% to 60wt% of this reflective heat-insulation paint gross weight, and wherein this resin is polymethylmethacrylate, propylene-styrene resin or acrylonitril butadiene styrene resin, and the viscosity of this resin is greater than 3000 centipoises;
The powder weighting material, it accounts between the 5wt% to 30wt% of this reflective heat-insulation paint gross weight; Wherein this powder weighting material comprises lime carbonate, zinc oxide, titanium oxide or zirconium white;
The hollow ball weighting material, it accounts between the 10wt% to 55wt% of this reflective heat-insulation paint gross weight; And
Alkyd, it accounts between the 10wt% to 20wt% of this reflective heat-insulation paint gross weight, and wherein the molecular weight of this alkyd is between between the 8000g/mol to 90000g/mol;
Described composition more comprises dispersion liquid, and it accounts between the 0.1wt% to 1wt% of this reflective heat-insulation paint gross weight; Wherein this dispersion liquid comprises polyvinylpyrrolidone, and the molecular weight of this polyvinylpyrrolidone is between between the 20000g/mol to 60000g/mol.
2. the composition of reflective heat-insulation paint as claimed in claim 1 more comprises foam-type resin, and it accounts between the 5wt% to 10wt% of this reflective heat-insulation paint gross weight.
3. the composition of reflective heat-insulation paint as claimed in claim 1, wherein this hollow ball weighting material comprises the hollow sphere of borosilicate.
4. the composition of reflective heat-insulation paint as claimed in claim 1, wherein the particle diameter of this hollow ball weighting material is between 10 μ m to 400 μ m.
5. the composition of reflective heat-insulation paint as claimed in claim 1, wherein this alkyd can coat this hollow ball weighting material, makes that this hollow ball weighting material can be bonded to each other, to form transparent film.
6. double thermal insulation coating comprises:
The porousness thermal insulation layer; And
The reflective insulation layer is formed at the top of this porousness thermal insulation layer;
This porousness thermal insulation layer wherein comprises:
Aerogel powder, it accounts between the 20wt% to 30wt% of this porousness thermal insulation layer gross weight;
Dispersion liquid, it accounts between the 0.1wt% to 1wt% of this porousness thermal insulation layer gross weight;
Alkyd, it accounts between the 10wt% to 20wt% of this porousness thermal insulation layer gross weight, and wherein the molecular weight of this alkyd is between between the 8000g/mol to 90000g/mol; And
First resin, it accounts between the 40wt% to 60wt% of this porousness thermal insulation layer gross weight, and the viscosity of this first resin is between 500～1500 centipoises, and wherein this first resin is polymethylmethacrylate, propylene-styrene resin or acrylonitril butadiene styrene resin;
This reflective insulation layer wherein comprises:
Second resin, it accounts between the 30wt% to 60wt% of reflective insulation layer gross weight, and the viscosity of this second resin is greater than 3000 centipoises, and wherein this second resin is polymethylmethacrylate, propylene-styrene resin or acrylonitril butadiene styrene resin;
The powder weighting material, it accounts between the 5wt% to 30wt% of reflective insulation layer gross weight; Wherein this powder weighting material comprises lime carbonate, zinc oxide, titanium oxide or zirconium white;
The hollow ball weighting material, it accounts between the 10wt% to 55wt% of reflective insulation layer gross weight; And
Alkyd, it accounts between the 10wt% to 20wt% of reflective insulation layer gross weight, and wherein the molecular weight of this alkyd is between between the 8000g/mol to 90000g/mol.
7. double thermal insulation coating as claimed in claim 6, wherein this aerogel powder system is selected from and comprises silicon oxide, titanium dioxide, zirconium white, carbon, resorcinol formaldehyde, urethane and polystyrene.
8. double thermal insulation coating as claimed in claim 6, wherein the specific surface area of this aerogel powder is between 400m
2/ g to 1200m
2Between/the g.
9. double thermal insulation coating as claimed in claim 6, wherein the aperture of this porousness thermal insulation layer is between between the 10nm to 30nm.
10. double thermal insulation coating as claimed in claim 6, wherein this alkyd system is coated on this hollow ball weighting material, makes that this hollow ball weighting material can be bonded to each other, to form transparent film.
11. double thermal insulation coating as claimed in claim 6, wherein the thickness of this porousness thermal insulation layer is between between the 0.2mm to 0.25mm.
12. double thermal insulation coating as claimed in claim 6, wherein the heat-conduction coefficient of this porousness thermal insulation layer is between between the 0.01W/m.k to 0.03W/m.k.
13. double thermal insulation coating as claimed in claim 6, wherein the thickness of this reflective insulation layer is between between the 0.2mm to 0.25mm.
14. double thermal insulation coating as claimed in claim 6, wherein the reflectivity of this reflective insulation layer is greater than 96%.
15. double thermal insulation coating as claimed in claim 6, wherein the heat-conduction coefficient of this double thermal insulation coating is between between the 0.01W/m.k to 0.05W/m.k.
16. the making method of a double thermal insulation coating comprises:
Base material is provided;
Form the porousness thermofin on this base material; And
Form the reflective insulation layer in the top of this porousness thermofin;
This porousness thermal insulation layer wherein comprises:
Aerogel powder, it accounts between the 20wt% to 30wt% of this porousness thermal insulation layer gross weight;
Dispersion liquid, it accounts between the 0.1wt% to 1wt% of this porousness thermal insulation layer gross weight;
Alkyd, it accounts between the 10wt% to 20wt% of this porousness thermal insulation layer gross weight, and wherein the molecular weight of this alkyd is between between the 8000g/mol to 90000g/mol; And
First resin, it accounts between the 40wt% to 60wt% of this porousness thermal insulation layer gross weight, and the viscosity of this first resin is between 500～1500 centipoises, and wherein this first resin is polymethylmethacrylate, propylene-styrene resin or acrylonitril butadiene styrene resin;
This reflective insulation layer wherein comprises:
Second resin, it accounts between the 30wt% to 60wt% of this reflective insulation layer gross weight, and the viscosity of this second resin is greater than 3000 centipoises, and wherein this second resin is polymethylmethacrylate, propylene-styrene resin or acrylonitril butadiene styrene resin;
The powder weighting material, it accounts between the 5wt% to 30wt% of this reflective insulation layer gross weight, and wherein this powder weighting material comprises lime carbonate, zinc oxide, titanium oxide or zirconium white;
The hollow ball weighting material, it accounts between the 10wt% to 55wt% of this reflective insulation layer gross weight; And
Alkyd, it accounts between the 10wt% to 20wt% of this reflective insulation layer gross weight, and wherein the molecular weight of this alkyd is between between the 8000g/mol to 90000g/mol.
17. the making method of double thermal insulation coating as claimed in claim 16, wherein this substrate comprises metal.
18. the making method of double thermal insulation coating as claimed in claim 16, the mode that wherein forms this porousness thermofin are to be finished by the mode of high pressure painting.
19. the making method of double thermal insulation coating as claimed in claim 16, the mode that wherein forms this reflective insulation layer are to be finished by the method for high pressure painting.
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| CN108424629A (en) * | 2018-01-31 | 2018-08-21 | 华南理工大学 | A kind of heat-insulating flame-retardant plastics and preparation method thereof |
| CN109530184A (en) * | 2018-09-28 | 2019-03-29 | 东北大学秦皇岛分校 | A kind of preparation method and spraying process of phase-change thermal storage-reflective insulation double thermal insulation coating |
| CN109594748A (en) * | 2018-11-14 | 2019-04-09 | 四川伟才高新材料有限公司 | Reflective heat-insulation paint and its construction technology |
| CN111040547A (en) * | 2019-12-27 | 2020-04-21 | 苏州晟德亿节能环保科技有限公司 | Thermal insulation aerogel coating and preparation method thereof |
| CN111269605A (en) * | 2020-01-20 | 2020-06-12 | 广东施彩新材料科技有限公司 | Reflective heat-insulation stone-like paint with double-layer structure and preparation method thereof |
| CN113773109A (en) * | 2021-08-26 | 2021-12-10 | 江苏金环科技有限公司 | Efficient metal reflection type heat insulation material |
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