CN104497729B - Aerogel anti-dewing paint, and preparation method and application thereof - Google Patents

Aerogel anti-dewing paint, and preparation method and application thereof Download PDF

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Publication number
CN104497729B
CN104497729B CN201410771503.9A CN201410771503A CN104497729B CN 104497729 B CN104497729 B CN 104497729B CN 201410771503 A CN201410771503 A CN 201410771503A CN 104497729 B CN104497729 B CN 104497729B
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aerogel
coating
aeroge
antifogging
aqueous
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CN104497729A (en
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王璇
张格丰
王双
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SUZHOU TONGXUAN NEW MATERIAL Co Ltd
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SUZHOU TONGXUAN NEW MATERIAL Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D125/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
    • C09D125/02—Homopolymers or copolymers of hydrocarbons
    • C09D125/04—Homopolymers or copolymers of styrene
    • C09D125/08—Copolymers of styrene
    • C09D125/14—Copolymers of styrene with unsaturated esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/16—Antifouling paints; Underwater paints
    • C09D5/1687—Use of special additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Inorganic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

The invention discloses an aerogel anti-dewing paint, and a preparation method and application thereof. The aerogel anti-dewing paint comprises an aerogel powder material and a water-based adhesive used as main components and optionally added additives. The content of the aerogel powder material is preferably is 10-50 wt%, and the aerogel powder material is selected from silicon dioxide aerogel, titanium dioxide aerogel and graphene aerogel. When the temperature is 27 DEG C and the relative humidity is 85%, the heat conductivity coefficient of the anti-dewing coating formed by the paint is 0.02-0.055 W/m*K or so, and the density is 0.5-0.7 g/cm＜3＞ or so. The preparation and coating techniques of the slurry can be changed to regulate the hydrophilcity or hydrophobicity of the coating surface. The paint and anti-dewing coating formed by the paint have excellent anti-dewing performance and thermal-insulation property, can not have the problems of hygroscopic expansion, reduction of adhesive force and the like after long-term usage, and have the advantages of no mildewing, high biosafety and beautiful appearance.

Description

Aeroge antifogging coating, its preparation method and application
Technical field
The present invention be more particularly directed to a kind of aeroge antifogging coating, its preparation method and application, belong to nano material technology Field.
Technical background
There is the phenomenon of condensed water in surface when condensation refers to that body surface temperature is less than neighbouring air dew point temperature.In supply and discharge The tables such as waterpipe, high residential building basement, house outer bay window, warehouse, electric power, communication apparatus, machine room, control room, air-conditioning, cabinet Face, when air reaches certain humidity, and the position contacted with humid air is cool below the saturation temperature of humid air, in Qi Jie Vapor contained in air can condense into water and become water droplet near face, dew condensation phenomenon, this dew condensation phenomenon long-time occur Device damage, product can be brought to go mouldy or the harmful effect such as get rusty, serious meeting causes pernicious security incident.
At present, the means for producing that condense are prevented, mainly by equipment or the structure design in house, such as patent CN2881424 and patent 201801991U, disclose using special structure design, prevent the generation for condensing；Or to system Conditioning control, such as patent CN203734174U, patent CN201844138U and patent CN101975762A are carried out, it is open Using heated for controlling temperature or the mode of dehumidification design, the generation for condensing is prevented.
Except both the above method, by using antifogging coating, can also delay or prevent the generation for condensing.It is general and Speech, antifogging coating mainly has three kinds, and one kind is the hydrophily for improving surface by coating, reduces surface sweating phenomenon, such as specially Sharp EP1845141 reduces the contact angle on coating top layer by adding nano material；The water imbibition for being to utilize coating second, That is, when Coated Surface Temperature is below dew point, can quickly absorb a large amount of moisture or dew；When Coated Surface Temperature exists When more than dew point, the absorption water of part can be discharged again, so as to reach the purpose of anti-condensation, such as patent EP0908500 is disclosed The dew condensation phenomenon on the first-class surface of optical frames is reduced using the polymeric coating layer of strong absorptive；And for example patent CN101962505A is public Open using the anti-of loose porous bibulous dusty material, the macromolecular material of high-hydroscopicity and hydrophilic macromolecule emulsion Condensation coating；The third is to integrate water suction, mould proof and heat-insulated interior wall coating, and for example, patent CN101348630A is open Using hygroscopic material, heat-barrier material, anti-fungus material, inorganic filler interior wall coating, reduce the condensation of building surface and send out Mould phenomenon.
Using special construction design or the anti-condensation mode of conditioning control, not only cost is high, and is difficult to Used in the equipment or house being molded, therefore, by the way of antifogging coating, construction is simple, and cost is relatively low.So And, the antifogging coating of above-mentioned three types is based primarily upon moisture absorption or electro-wetting principle, there is condensation hidden danger, and for example absorb water saturation, Anti-condensation effect is reduced, and due to coating water swelling, the cohesive force between coating and substrate can be caused to reduce, it is impossible to be permanent Effectively.
The content of the invention
Present invention is primarily targeted at a kind of aeroge antifogging coating and preparation method thereof is provided, to overcome existing skill Deficiency in art.
Another object of the present invention is to provide the application of the aeroge antifogging coating.
To realize aforementioned invention purpose, the technical solution used in the present invention includes：
A kind of aeroge antifogging coating, it is included：As the aerogel powder material and aqueous binders of key component, And alternative addition or without additive.
In more preferred embodiment, the aeroge antifogging coating includes 10～50wt% aerogel powder materials Material.
Wherein, when the content of aerogel powder material is less than 10wt%, the heat-proof quality of antifogging coating is slightly poor, anti-caking Dew less effective, can use cooperatively with hygroscopicity antifogging coating, and aerogel powder material content be higher than 50wt% When, although heat-proof quality is excellent, anti-condensation excellent effect, but the mechanical performance of film is poor, and outward appearance is not good enough, Ke Yizuo Use for anti-condensation sandwich material.
Wherein, the aerogel powder material is the excellent nano-pore material of heat-proof quality, and its density is arrived in 0.05g/ml Between 0.3g/ml, at 0.1 micron between 2mm, specific surface is in 500m for particle size2/ g to 1200m2Between/g, thermal conductivity exists Between 0.01W/m.k to 0.04W/mk, and at least may be selected from aerosil, titania aerogel, Graphene gas Any one in gel, but not limited to this.
In more preferred embodiment, the aeroge antifogging coating includes 10～50wt% aqueous binders. Wherein main film forming substance of the aqueous binders system as antifogging coating.
The aqueous binders at least may be selected from aqueous pure-acrylic emulsion, aqueous acrylate and vinyl acetate emulsion, waterborne styrene-acrylic emulsion, aqueous third Any one in olefin(e) acid ester emulsion, aqueous polyurethane emulsion, aqueous epoxy resin emulsion, waterborne organic silicon emulsion, but be not limited to This.
Further, the additive includes inorganic filler and/or auxiliary agent.Wherein, inorganic filler is mainly to strengthen The intensity of coating so as to good workability and antifouling property.Auxiliary agent is mainly for by hydrophobic aerogel material Stable dispersion can further lift the workability and filming performance of film into aqueous base material, and by adding auxiliary agent.
In more preferred embodiment, the aeroge antifogging coating includes 0～10wt% inorganic fillers.
In more preferred embodiment, the aeroge antifogging coating includes 0～10wt% auxiliary agents.
When inorganic filler and/or auxiliary agent content be more than 10wt% when, can have a strong impact on aeroge antifogging coating every Hot property so as to which anti-condensation effect is deteriorated.
Further, the inorganic filler at least may be selected from white carbon, titanium dioxide, dicalcium powder, fine particle calcium carbonate, calcined kaolin, Any one in barite, talcum powder, expanded perlite, expanded vermiculite, diatomite, sepiolite powder, silicate powder fiber, But not limited to this.
Further, the auxiliary agent at least may be selected from defoamer, dispersant, levelling agent, thickener, wetting agent, film forming and help Any one in agent, pigment, but not limited to this.
Wherein, the defoamer may be selected from but be not limited to nonyl (pungent) base phenol polyethenoxy ether, soap salt, silicone oil, polyethers, height One or more in level alcohol, mineral oil, vegetable oil.
Wherein, the dispersant can be cationic surfactant, such as cetalkonium chloride, alkyl Pyridinium bromide, hexadecylpyridinium chloride, cetyl trimethylammonium bromide, hexadecyltrimethylammonium chloride etc., it is also possible to It is anion surfactant, such as SAS, SAS, alkylbenzenesulfonate, Teepol and alkane Mixture, Teepol of base benzene sulfonic acid sodium salt etc., or nonionic surfactant, such as sucrose monolaurate, Sucrose-mono-oleate, sucrose palmitic acid ester, polyglycol distearate, NPE, fatty alcohol polyoxy second One or more among alkene ether etc..
Wherein, the levelling agent can be but not limited to phorone, DAA, pure acrylic acid levelling agent, fluorine richness third One kind or several in olefin(e) acid levelling agent, phosphate modified acrylic acid levelling agent, fluorocarbons class levelling agent, organosilicon levelling agent Kind.
Wherein, the thickener can be but not limited to silica, potter's clay, clay, kaolin, hydroxymethyl cellulose, Hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, water soluble polymer synthetic thickening agent, the thickening of conclusion property One or more in agent.
Wherein, the wetting agent can be but not limited to hydrocarbon wetting agent, organic silicon polyether wetting agent, fluorine carbonization One or more in compound wetting agent.
Wherein, the coalescents can be but not limited to alcohols such as phenmethylol, alkoxide such as Lauryl Alcohol ester, alcohol ethers Such as butyl glycol ether, propane diols phenylate, one or more in alcohol ether esters such as hexylene glycol monobutyl ether acetate.
Wherein, the pigment can be but not limited to the oxide of metal, sulfide, sulfate, chromate, molybdate, One or more in AZOpigments, phthalein green grass or young crops pigment, Heterocyclics Pigments, mordant pigment, dyestuff, fluorescent whitening agent and fluorescent pigment.
Further, the viscosity of the aeroge antifogging coating is 3500mPa/s～4500mPa/s.
A kind of method for preparing the aeroge antifogging coating, it includes：At least by aerogel powder material with it is aqueous Binding agent uniformly mixes, and obtains the aeroge antifogging coating.
Further, the preparation method specifically may also include：By aqueous binders, auxiliary agent and inorganic filler mixing premixing, Add aerogel powder to continue to mix, until being well mixed.
In the preparation technology of the present invention, material mixed method can be that ball milling, mechanical agitation, sand milling, the grinding of three rollers etc. are mixed Any one or more in conjunction method, and not limited to this.
The antifogging coatling formed by the aeroge antifogging coating.
Further, the antifogging coatling thickness is 0.01～10mm, is 27 DEG C in temperature, and relative humidity is 85% Under the conditions of, thermal conductivity factor is 0.02～0.055W/mK, and density is 0.15～0.7g/cm3。
A kind of device, comprising described aeroge antifogging coating or described antifogging coatling.
Aeroge antifogging coating of the present invention mainly uses the extremely excellent heat-proof quality reality of aerogel material in coating Existing anti-condensation, rather than be, based on moisture absorption principle, in other words, that is, body surface to be improved by the excellent thermal insulation performance of coating Temperature, is allowed to be not less than the saturation temperature of humid air, so as to the generation for preventing from condensing.
Compared with prior art, advantages of the present invention includes：
1) phenomenon that the antifogging coating will not occur moisture expantion, adhesion is reduced, lifts the long-term of antifogging coating Using effect, reduces the potential safety hazard brought due to moisture expantion.
2) moisture is substantially free of inside the antifogging coatling for being formed by the antifogging coating, can effectively suppresses mould Deng the growth of microorganism, make coating not go mouldy, improve the aesthetic and biological safety of coating.
3) antifogging coatling formed by the antifogging coating not only has excellent anti-condensation performance, while also having very Good heat-proof quality.In the application of some occasions, such as building field, in addition to anti-condensation, additionally it is possible to effectively play The effect of heat-insulation and heat-preservation.
Description of the drawings
Fig. 1 is a kind of structural representation of coating anti-condensation test device in the embodiment of the present invention 1；
Fig. 2 is the photo of the anti-condensation effect of the aeroge antifogging coatling prepared by the embodiment of the present invention 1.
Specific embodiment
Below in conjunction with the technical solution of the present invention is further explained the explanation of some preferred embodiments and accompanying drawing.
Embodiment 1：20g waterborne styrene-acrylic emulsions (solid content is 50%), 2g dodecyl sodium sulfates, 2g white carbons are used Mechanical agitator mixes, mixing speed 100rpm, mixing time 5 minutes, and be uniformly mixed liquid, adds in this mixed liquor 3.5g silicon dioxide aerogel powders, the powder density is 0.07g/cc, and average grain diameter is 50 microns, and specific surface area is in 500m2/ G to 1200m2Between/g, mixing speed is 500rpm, and mixing time is 30 minutes, and milky white colour-stable slurry, slurry is obtained Viscosity is 4000mPa/s.This aeroge antifogging coating is brushed to required substrate surface, after being dried at room temperature for 24 hours, Just antifogging coatling is obtained, the thermal conductivity of coating is 0.045W/mk, and density is 0.65g/cc.The coating is smooth attractive in appearance, with Substrate is firmly combined with, even if long-time is in low temperature, high humidity environment, coating surface condensation is little, and rear nothing by long-term use Expansion, mildew phenomena, and keep good heat-insulated, insulation, anti-condensation effect.By Fig. 1 shown devices, test temperature is 15 DEG C, Relative humidity is 85%, and after seven hours, the volume dripped to without airsetting gel coating condensation in graduated cylinder is 14mL, is had under the same terms The condensation volume of airsetting gel coating is 4mL.
Embodiment 2 is by 20g aqueous polyurethane emulsions (solid content is 35%), 3g NPEs, 1g lightweight carbon Sour calcium is mixed using mechanical agitator, mixing speed 100rpm, mixing time 5 minutes, and be uniformly mixed liquid, in this mixed liquor Middle addition 2.5g titania aerogel powders, the powder density is 0.07g/cc, and average grain diameter is 50 microns, and mixing speed is 500rpm, mixing time is 30 minutes, and milky white colour-stable slurry is obtained, and slurry viscosity is 3500mPa/s.By this aeroge Antifogging coating is brushed to required substrate surface, after being dried at room temperature for 24 hours, antifogging coatling, the heat of coating is just obtained Conductance is 0.055W/mk, and density is 0.6g/cc.The coating is smooth attractive in appearance, is firmly combined with substrate, even if long-time is low Temperature, in high humidity environment, coating surface condensation is little, and with antibacterial and mouldproof effect, by long-term use after it is existing without expanding, going mouldy As, and keep good heat-insulated, insulation, anti-condensation effect.
Embodiment 3 is by the aqueous pure-acrylic emulsions of 20g (solid content is 50%), 3.5g hexadecylpyridinium chlorides, 3g alcohol esters ten Two are mixed using mechanical agitator, mixing speed 100rpm, mixing time 5 minutes, and be uniformly mixed liquid, in this mixed liquor 5g graphene aerogel powders are added, the powder density is 0.07g/cc, and average grain diameter is 50 microns, and mixing speed is 500rpm, mixing time is 30 minutes, and milky white colour-stable slurry is obtained, and slurry viscosity is 4500mPa/s.By this aeroge Antifogging coating sprays to required substrate surface, after being dried at room temperature for 8 hours, antifogging coatling, the heat of coating is just obtained Conductance is 0.035W/mk, and density is 0.62g/cc.The coating is smooth attractive in appearance, is firmly combined with substrate, even if long-time is low Temperature, in high humidity environment, coating surface condensation is little, and by long-term use after without expansion, mildew phenomena, and keep well every Heat, insulation, anti-condensation effect.For example, refer to shown in Fig. 2, temperature be 27 DEG C, relative humidity be 85% under conditions of, base Basal surface is not condensed in a large number by the region of the coating protection, and condensation does not occur completely in the region surface for having the coating protection.
It is one or more of preferred embodiment it should be appreciated that disclosed, the change or modification of every local And come from the technological thought of the present invention and be that the people for being familiar with the technology is easy to what is deduced, all without departing from the patent right of the present invention Scope.

Claims (7)

1. a kind of aeroge antifogging coating is included in preparing the purposes in antifogging coatling, the aeroge antifogging coating： As the aerogel powder material and aqueous binders of key component, and alternative addition or without additive；And And, in the aeroge antifogging coating, the content of aerogel powder material is 10wt%～50wt%, aqueous binders Content is 10wt%～50wt%；The density of the aerogel powder material is 0.05g/ml～0.3g/ml, and particle diameter is 0.1 micro- Rice～2mm, specific surface is 500m2/ g～1200m2/ g, thermal conductivity is 0.01W/mk～0.04W/mk.
2. purposes according to claim 1, it is characterised in that：The aerogel powder material is at least selected from silica gas Any one in gel, titania aerogel, graphene aerogel.
3. purposes according to claim 1, it is characterised in that：The aqueous binders at least selected from aqueous pure-acrylic emulsion, In aqueous acrylate and vinyl acetate emulsion, waterborne styrene-acrylic emulsion, aqueous polyurethane emulsion, aqueous epoxy resin emulsion, waterborne organic silicon emulsion Any one.
4. purposes according to claim 1, it is characterised in that：The additive bag is containing inorganic filler and/or auxiliary agent.
5. purposes according to claim 4, it is characterised in that：The aeroge antifogging coating comprising 0～10wt% without Machine filler, the inorganic filler is at least selected from white carbon, titanium dioxide, dicalcium powder, fine particle calcium carbonate, calcined kaolin, barite, talcum Any one in powder, expanded perlite, expanded vermiculite, diatomite, sepiolite powder, silicate powder fiber.
6. purposes according to claim 4, it is characterised in that：The aeroge antifogging coating is helped comprising 0～10wt% Agent, any one of the auxiliary agent at least in defoamer, dispersant, levelling agent, thickener, wetting agent, coalescents.
7. purposes according to claim 1, it is characterised in that：The thickness of the antifogging coatling is 0.01～10mm, Temperature be 27 DEG C, relative humidity be 85% under conditions of, thermal conductivity factor be 0.02～0.055W/mK, density be 0.15～ 0.7g/cm3。
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