CN107265962A - A kind of superthermal insulation aerogel foam concrete and preparation method thereof - Google Patents
A kind of superthermal insulation aerogel foam concrete and preparation method thereof Download PDFInfo
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- CN107265962A CN107265962A CN201610214826.7A CN201610214826A CN107265962A CN 107265962 A CN107265962 A CN 107265962A CN 201610214826 A CN201610214826 A CN 201610214826A CN 107265962 A CN107265962 A CN 107265962A
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
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Abstract
The invention discloses a kind of superthermal insulation aerogel foam concrete and preparation method thereof, it is characterized in that, aerogel foam concrete is made up of aerogel powder and foam concrete, the aerogel powder is made up of inner hydrophobic layer and surface hydrophilic layer, and the surface hydrophilic thickness degree is 0.1 ~ 100 μm.The preparation method of the superthermal insulation aerogel foam concrete of the present invention comprises the following steps：（1）Aerogel powder is modified；（2）By step（1）Obtained aerogel powder is dry-mixed with binder materials, and then add water wet mixing；（3）By step（2）Obtained wet compound is mixed with foaming agent, stirring.The aerogel foam concrete of the present invention can be widely applied to the fields such as wall thermal insulating, fire prevention, sound insulation and steel structure fireproofing.
Description
Technical field
The present invention relates to a kind of preparation method of building thermal insulation material, more particularly toA kind of superthermal insulation aerogel foam concrete and preparation method thereof, belong to the fields such as lightweight, thermal insulation, fire prevention, acoustic material.
Background technology
With the development of the society, being on the rise the problems such as energy crisis, environmental degradation.2006,《It is nationalEconomy and social development 11th Five-Year Plan outline》" energy-saving and emission-reduction " concept is proposed first, it is proposed that the Eleventh Five-Year Plan period（2006-2010）Energy consumption per unit reduction by 20% or so, total emissions of major pollutants reduces by 10% the binding indicator." energy-conservation " promotion " emission reduction ", is produced in total energy consumption, building energy consumption accounts for 33%, and building energy conservation is the most important thing of China's energy-saving and emission-reduction cause at home.According to statistics, the heat loss of wall body structure takes wall the committed step that heat insulation measure is building energy conservation with respect to highest.
Conventional wall heat insulation material has expanded polystyrene (EPS), polyurathamc, rock wool, thermal insulation mortar, foamed glass, conventional foam concrete etc..Expanded polystyrene (EPS) and polyurathamc heat-proof quality are excellent, but it meets fiery inflammable, generation asphyxiating smog, serious to threaten owner's safety；Rock wool heat-proof quality is excellent, but meets water failure, and difficulty of construction is big；Thermal insulation mortar fire protecting performance is good, but thermal conductivity factor is of a relatively high；Foamed glass is easily scaling-off, and cost is higher, influences its engineer applied.
Compared with existing insulation material, foam concrete belongs to A grades of insulation materials, and with intensity height, the low advantage of cost, still, its heat preservation and insulation is not as good as organic foam insulation material.Therefore, the thermal and insulating performance for further improving foam concrete is significant.
Aeroge is a kind of light-weight inorganic solid material with three-dimensional network skeleton structure and nanoscale hole hole, with high porosity, specific surface area, extremely low density and solid content, chemical inertness and noninflammability, the characteristics such as excellent lightweight, insulation, fire prevention, sound insulation, damping energy-absorbing are shown, thermal conductivity factor can as little as 0.013W/mK.Therefore, it is expected to break through the bottleneck that restriction further improves foam concrete heat preservation and insulation in foam concrete if aeroge is added to.
However, running into following technical bottleneck when researching and developing aerogel foam concrete：（1）Because aerogel powder and concrete density difference are big, in mixed process, easily occurs phenomenon of phase separation therebetween, it is difficult to be evenly distributed in concrete system to cause aeroge, foam concrete mechanical property degradation is caused, and heat-insulating property improves unobvious；（2）In foam concrete preparation process, aeroge nano-porous structure is easily destroyed by additive in the water and cement raw material in concrete etc., loses the excellent heat-insulating property that aeroge comes by nano-porous structure characteristic strip；（3）Usually cause foam concrete mechanical property to significantly reduce, and be easily caused aerogel powder to come off from concrete substrate because boundary strength is low between aeroge and binder materials.
The content of the invention
For above-mentioned technical problem, the present invention is proposedA kind of superthermal insulation aerogel foam concrete and preparation method thereof。
A kind of superthermal insulation aerogel foam concrete, is made up of aerogel powder and foam concrete, and the aerogel powder is made up of inner hydrophobic layer and surface hydrophilic layer, and the surface hydrophilic thickness degree is 0.1 ~ 100 μm.
A kind of preparation method of superthermal insulation aerogel foam concrete, comprises the following steps：
（1）Aerogel powder is modified；
（2）By step（1）Obtained aerogel powder is dry-mixed with binder materials, and then add water wet mixing；
（3）By step（2）Obtained wet compound is mixed with foaming agent, stirring.
In one of the embodiments, the step（1）Including hydrophobically modified step；The hydrophobically modified is to carry out hydrophobically modified to aerogel powder in closed hydrophobic modifier gaseous environment；The hydrophobic modifier be trim,ethylchlorosilane, HMDS, HMDO, MTMS, MTES, dimethyldimethoxysil,ne, dimethyldiethoxysilane, γ-aminopropyltrimethoxysilane, gamma-aminopropyl-triethoxy-silane, γ-（The oxygen of 2,3- epoxies third）Propyl trimethoxy silicane, γ-methacryloxypropyl trimethoxy silane, N-（β-aminoethyl）One or more in-gamma-aminopropyl-triethoxy-silane.
In one of the embodiments, the step（1）Also include surface hydrophilic modification step；The surface hydrophilic modification is that hydrophobic aerogel powder surface is modified using surface hydrophilic modification solution；The surface hydrophilic modification solution is surfactant and the aqueous solution or the aqueous solution of low surface tension solvent of low surface tension solvent；The surfactant is the one or more in anionic surfactant, cationic surface active agent, amphoteric surfactant, nonionic surface active agent；The anionic surfactant is the one or more in fatty alcohol phosphates, aliphatic alcohol polyoxyvinethene phosphate salt, alkyl sulfate, fatty alcohol polyoxyethylene ether sulfate, fatty acid glyceride sulfate, sulphation ricinoleate, cycloalkanes sulfate, fatty acid amide alkyl sulfate, alkylbenzenesulfonate, alkylsulfonate, fatty acid methyl ester ethoxylate sulfonate, MES, aliphatic alcohol polyethenoxy ether carboxylate；The cationic surface active agent is aliphatic ammonium salt；The amphoteric surfactant is the one or more in alkyl amino acid, carboxylic acid group's glycine betaine, sulfobetaines, phosphate glycine betaine, alkyl hydroxy amine oxide；The nonionic surface active agent is the one or more in aliphatic polyester, APES, high-carbon fatty alcohol polyoxyethylene ether, polyoxyethylene carboxylate, fatty acid methyl ester ethoxylate, the oxireme addition product of polypropylene glycol, sorbitan ester, sucrose fatty ester, alkyl esteramides；The low surface tension solvent is one or more mixtures in acetone, n-hexane, pentane, normal heptane, ethanol, isopropanol, the tert-butyl alcohol, propane diols, glycerine.
In one of the embodiments, in the surface hydrophilic modification step, in addition to additional physical field action step；The additional physical field action step is one kind in far infrared radiation, stirring, ultrasonication, ball milling.
In one of the embodiments, the step（1）Also include drying process step；The drying process step is one kind in far-infrared ray drying, spray drying, microwave drying, constant pressure and dry, supercritical drying, subcritical drying, freeze-drying.
In one of the embodiments, the binder materials is the one or more in portland cement, aluminate cement, sulphate aluminium cement, magnesia oxychloride cement, gypsum, lime, waterglass, acrylic emulsion, polyaminoester emulsion, epoxy resin latex, silicone resin emulsion, fluorocarbon resin emulsion, polyvinyl alcohol emulsions, ethylene/vinyl acetate copolymer emulsion.
In one of the embodiments, the step（2）And/or the step（3）In can also add the one or more in phase-changing energy storage material, lightweight aggregate, admixture, fiber, fire retardant, wood powder, additive.
In one of the embodiments, the phase-changing energy storage material is the one or more in the inorganic water and salt, higher aliphatic hydrocarbon, polyalcohol, multi-hydroxy carboxy acid of microcapsule coated；The lightweight aggregate is haydite, clinker, expanded vermiculite, pelelith, expanded perlite, glass bead, light weight sand, polyurethane foam particles, the one or more of polystyrene foam particles；The admixture is the one or more in adding calcium fly ash, II grade of flyash, silicon ash, ground slag powder, phosphorus slag powder；The fiber is the one or more in styroflex, polypropylene fibre, lignin fibre, alkali-resistant glass fibre, steel fibre；The fire retardant is one or both of magnesium hydroxide, aluminium hydroxide；The additive is the one or more in the surfactant, water reducer, hydrophober, coagulant, retarder, thickener, foam stabilizer, preservative；The water reducer is the one or more in polycarboxylic acids dehydragent, lignin sulfonic acid sodium salt water reducer, naphthalene water reducer, aliphatic water reducing agent, amino water reducer；The hydrophober is the one or more in hard sulfonate hydrophober, organosilicon moisture repellent；The coagulant is the one or more in sodium metasilicate, aluminum sulfate, sodium nitrate, calcium nitrate, sodium sulphate, sodium carbonate, lithium carbonate；The retarder is the one or more in citric acid, sodium polyphosphate, bone glue protein, borax；The thickener is the one or more in methylcellulose, ethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, bentonite, white carbon, starch；The foam stabilizer is the one or more in polyacrylamide, polyvinyl alcohol, silicones polyethers emulsion, DDAO, alkylolamides；The preservative is the one or more in 1,2- benzisothiazole-3-ketones, CMIT, MIT, 1,3,5- tri- (2- ethoxys) s-triazine, hexahydro -1,3,5- triethyl groups-triazine.
In one of the embodiments, the foaming agent is the one or more in rosin foaming agent, synthesis class surfactant foaming agent, vegetable protein foaming agent, animal protein foaming agent, dioxygen water foaming agent, ammonium hydrogen carbonate foaming agent, azodicarbonamide foaming agent, aluminium powder foaming agent.
A kind of thermal conductivity factor of above-mentioned superthermal insulation aerogel foam concrete is 0.03 ~ 0.09 W/mK, and compression strength is 0.5 ~ 15.0MPa, can be widely applied to the fields such as wall thermal insulating, fire prevention, sound insulation and steel structure fireproofing.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, the embodiment below to the present invention is described in detail.Many details are elaborated in the following description to fully understand the present invention.But the invention can be embodied in many other ways as described herein, those skilled in the art can make similar improvements without departing from the spirit of the invention, therefore the present invention is not limited to the specific embodiments disclosed below.
A kind of embodiment of the superthermal insulation aerogel foam concrete of the present invention, is made up of aerogel powder and foam concrete, and the aerogel powder is made up of inner hydrophobic layer and surface hydrophilic layer, and the surface hydrophilic thickness degree is 0.1 ~ 100 μm.
In this way, the present invention compounds aerogel powder and foam concrete so that aerogel powder is uniformly distributed in foam concrete, and aerogel powder still keeps nano-porous structure, has good interface cohesion between aerogel powder and concrete；Compared with the existing foam concrete of in the market, the aerogel foam concrete of the present invention is not on the premise of mechanical property is reduced, thermal and insulating performance is significantly improved, the field such as green building and super low energy consumption and exterior wall, self heat insulation wall, floor dividing plate and the steel structure fireproofing of nearly zero energy consumption building is widely portable to.
A kind of preparation method of superthermal insulation aerogel foam concrete, comprises the following steps：
（1）Aerogel powder is modified；
（2）By step（1）Obtained aerogel powder is dry-mixed with binder materials, and then add water wet mixing；
（3）By step（2）Obtained wet compound is mixed with foaming agent, stirring.
In addition, particle diameter is applied to the present invention for 1 ~ 10000 μm of aerogel powder.
In addition, step of the present invention（2）Can also be that binder materials is dry-mixed, then added water wet mixing, and step is added during wet mixing（1）Obtained aerogel powder.
In this way, the preparation method of the aerogel foam concrete of the present invention has the advantages such as technique is simple, process cycle is short, sharp useless environmental protection, it is adapted to industrialized production.
In the present embodiment, the step（1）Including hydrophobically modified step；The hydrophobically modified step is to carry out hydrophobically modified to aerogel powder in closed hydrophobic modifier gaseous environment；The hydrophobic modifier be trim,ethylchlorosilane, HMDS, HMDO, MTMS, MTES, dimethyldimethoxysil,ne, dimethyldiethoxysilane, γ-aminopropyltrimethoxysilane, gamma-aminopropyl-triethoxy-silane, γ-（The oxygen of 2,3- epoxies third）Propyl trimethoxy silicane, γ-methacryloxypropyl trimethoxy silane, N-（β-aminoethyl）One or more in-gamma-aminopropyl-triethoxy-silane.
So, because in existing aeroge preparation method, precursor, displacement solvent and drying process have significant effect to the hydrophobicity of aeroge, if the surface of aeroge and the contact angle of water are more than 90 °, hydrophobically modified can not be carried out in advance, directly carry out surface hydrophilic modification；If the surface of aeroge and the contact angle of water are less than 90 °, need to carry out hydrophobically modified in advance；Hydrophobically modified is carried out to aerogel powder in closed hydrophobic modifier gaseous environment, modified effect except significantly improving aerogel powder, ensure that inside nano-porous structure is not destroyed outer during follow-up hydrophilic modifying, also significantly improves modification efficiency and production efficiency, reduces production cost.
In the present embodiment, the step（1）Also include surface hydrophilic modification step；The surface hydrophilic modification step is that hydrophobic aerogel powder surface is modified using surface hydrophilic modification solution；The surface hydrophilic modification solution is surfactant and the aqueous solution or the aqueous solution of low surface tension solvent of low surface tension solvent；The surfactant is the one or more in anionic surfactant, cationic surface active agent, amphoteric surfactant, nonionic surface active agent；The anionic surfactant is the one or more in fatty alcohol phosphates, aliphatic alcohol polyoxyvinethene phosphate salt, alkyl sulfate, fatty alcohol polyoxyethylene ether sulfate, fatty acid glyceride sulfate, sulphation ricinoleate, cycloalkanes sulfate, fatty acid amide alkyl sulfate, alkylbenzenesulfonate, alkylsulfonate, fatty acid methyl ester ethoxylate sulfonate, MES, aliphatic alcohol polyethenoxy ether carboxylate；The cationic surface active agent is aliphatic ammonium salt；The amphoteric surfactant is the one or more in alkyl amino acid, carboxylic acid group's glycine betaine, sulfobetaines, phosphate glycine betaine, alkyl hydroxy amine oxide；The nonionic surface active agent is the one or more in aliphatic polyester, APES, high-carbon fatty alcohol polyoxyethylene ether, polyoxyethylene carboxylate, fatty acid methyl ester ethoxylate, the oxireme addition product of polypropylene glycol, sorbitan ester, sucrose fatty ester, alkyl esteramides；The low surface tension solvent is the one or more in acetone, n-hexane, pentane, normal heptane, ethanol, isopropanol, the tert-butyl alcohol, propane diols, glycerine.
So, using the aqueous solution of the aqueous solution or low surface tension solvent of surfactant and low surface tension solvent, in hydrophilic modifying processing procedure is carried out to hydrophobic aerogel powder surface there is surface to cooperate with hydrophilic modifying effect, it is remarkably improved wetting spreading rate of the surface hydrophilic modification solution on aerogel powder surface, significantly slow simultaneously to the wetting extension inside aerogel powder, by the consumption for regulating and controlling modified solution, the regulation and control to aerogel powder surface hydrophilic thickness degree can accurately be realized, low surface tension solvent not only with water and surfactant there is surface to cooperate with hydrophilic modifying effect, and the capillary force into the hydrophilic modifying solution in the nano-pore of aerogel powder top layer can be greatly reduced, it is easy to that the hydrophilic modifying solution in the nano-pore of aerogel powder top layer is evaporated by drying process, without destroying its nano-porous structure, inner hydrophobic is presented in the aerogel powder of the present invention, surface hydrophilic, surface hydrophilic layer still retains the architectural feature that nano-porous structure and surface hydrophilic thickness degree are 0.1 ~ 100 μm, there is good interface cohesion between binder materials；The technique has the features such as step is simple, the cycle is short, production efficiency is high, it is adaptable to industrialized production.
In the present embodiment, in the surface hydrophilic modification step, in addition to additional physical field action step；The additional physical field action step is one kind in far infrared radiation, stirring, ultrasonication, ball milling.
In this way, additional physics field action can significantly improve the activity and the contact probability with aerogel powder of surface hydrophilic modification solution, dosage of surfactant is reduced, the surface hydrophilic modification speed of aerogel powder is improved, cost is reduced, production efficiency is improved.
In the present embodiment, the step（1）Also include drying process step；The drying process step is one kind in far-infrared ray drying, spray drying, microwave drying, constant pressure and dry, supercritical drying, subcritical drying, freeze-drying.
If in this way, aerogel powder and binder materials compound tense after hydrophilic modifying, the remaining hydrophilic modifying solution in top layer can influence interface cohesion, processing need to be pre-dried；Utilize above-mentioned drying process, on the premise of ensuring that aerogel powder top layer nano-pore structure is not destroyed, surface hydrophilic modification solution remaining in the nano-pore of aerogel powder top layer is evaporated, the interface bond strength between aerogel powder and binder materials is improved.
In the present embodiment, the binder materials is the one or more in portland cement, aluminate cement, sulphate aluminium cement, magnesia oxychloride cement, gypsum, lime, waterglass, acrylic emulsion, polyaminoester emulsion, epoxy resin latex, silicone resin emulsion, fluorocarbon resin emulsion, polyvinyl alcohol emulsions, ethylene/vinyl acetate copolymer emulsion.
In the present embodiment, the step（2）And/or the step（3）In can also add the one or more in phase-changing energy storage material, lightweight aggregate, admixture, fiber, fire retardant, wood powder, additive.
In this way, the step of the present invention（2）Using two step hybrid techniques of dry-mixed-wet mixing, solve because aerogel powder with the difference in specific gravity of other materials is big mix when cause layering, realize uniform mixing of the modified aerogels powder in concrete, influence of the aerogel powder to foaming process is reduced simultaneously, be conducive to controlling foaming quality, realize low thermal conductivity factor.
In the present embodiment, the phase-changing energy storage material is the one or more in the inorganic water and salt, higher aliphatic hydrocarbon, polyalcohol, multi-hydroxy carboxy acid of microcapsule coated；The lightweight aggregate is haydite, clinker, expanded vermiculite, pelelith, expanded perlite, glass bead, light weight sand, polyurethane foam particles, the one or more of polystyrene foam particles；The admixture is the one or more in adding calcium fly ash, II grade of flyash, silicon ash, ground slag powder, phosphorus slag powder；The fiber is the one or more in styroflex, polypropylene fibre, lignin fibre, alkali-resistant glass fibre, steel fibre；The fire retardant is one or both of magnesium hydroxide, aluminium hydroxide；The additive is the one or more in the surfactant, water reducer, hydrophober, coagulant, retarder, thickener, foam stabilizer, preservative；The water reducer is the one or more in polycarboxylic acids dehydragent, lignin sulfonic acid sodium salt water reducer, naphthalene water reducer, aliphatic water reducing agent, amino water reducer；The hydrophober is the one or more in hard sulfonate hydrophober, organosilicon moisture repellent；The coagulant is the one or more in sodium metasilicate, aluminum sulfate, sodium nitrate, calcium nitrate, sodium sulphate, sodium carbonate, lithium carbonate；The retarder is the one or more in citric acid, sodium polyphosphate, bone glue protein, borax；The thickener is the one or more in methylcellulose, ethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, bentonite, white carbon, starch；The foam stabilizer is the one or more in polyacrylamide, polyvinyl alcohol, silicones polyethers emulsion, DDAO, alkylolamides；The preservative is the one or more in 1,2- benzisothiazole-3-ketones, CMIT, MIT, 1,3,5- tri- (2- ethoxys) s-triazine, hexahydro -1,3,5- triethyl groups-triazine.
So, phase-changing energy storage material can be absorbed or be discharged a large amount of heat energy by phase transformation, with energy storage effect, the aerogel foam concrete of the present invention is used for building masonry wall, architecture indoor temperature can be adjusted, comfortable quality of building is improved, the energy is saved, also, the freezing and thawing performance of aerogel foam concrete of the present invention can be improved by adding phase-changing energy storage material；Lightweight aggregate has low density, high compression strength, good heat-insulating property, and addition lightweight aggregate can improve aerogel foam mechanical performance of concrete, heat-insulating property, substantially not increase or decrease its density；The workability of concrete can be improved using admixture, poly- property is sticked, and reduced the slump of concrete, be conducive to the even aperture distribution of aerogel foam concrete, and then improve the mechanical property and heat-insulating property of aerogel foam concrete；Also, be conducive to the use of industrial waste using admixture, reduce the cost of aerogel foam concrete, energy-conserving profit waste；Addition fiber can improve the mechanical properties such as the anti-folding of aerogel foam concrete；Addition fire retardant can improve the fire-protection rating of the aerogel foam concrete of the present invention, and meeting fire due to fire retardants such as magnesium hydroxide, aluminium hydroxides occurs the dehydration endothermic reaction, extends the elevated speed of substrate temperature；Addition wood powder can improve the intensity between aerogel foam concrete and anchoring piece, screw；Addition surfactant can improve wetting efficiency of the binder materials to surfaces such as fiber, lightweight aggregates, and then improve the interface bond strength between binder materials and fiber, binder materials and lightweight aggregate；Addition water reducer can improve concrete flowability and slump, reduce water consumption, improve the mechanical property of aerogel foam concrete；Addition hydrophober can significantly reduce the water absorption rate of aerogel foam concrete, particularly the aerogel foam concrete with through-hole structure, improve the freeze-thaw resistance and weatherability of aerogel foam concrete；Add the solidification rate that coagulant accelerates binder materials, the presetting period of aerogel foam concrete can be reduced, reduce aerogel foam concrete aperture so that aerogel foam concrete even aperture distribution, improve aerogel foam mechanical performance of concrete and heat-insulating property；Addition retarder can slow down the solidification rate of binder materials, when using gypsum, because gypsum speed is too fast, it is necessary to add retarder regulation firm time；Addition thickener can increase concrete viscosity, improve the stability and porosity of foam concrete abscess so that the shape of aerogel foam concrete abscess is generally the ball-type of rule, and then improves the mechanical property and heat-insulating property of aerogel foam concrete；Addition foam stabilizer can improve the cell stability and porosity of aerogel foam concrete, and then improve the mechanical property and heat-insulating property of aerogel foam concrete；Addition preservative can avoid aerogel foam concrete from going mouldy, and improve its service life and durability.
In the present embodiment, the foaming agent is the one or more in rosin foaming agent, synthesis class surfactant foaming agent, vegetable protein foaming agent, animal protein foaming agent, dioxygen water foaming agent, ammonium hydrogen carbonate foaming agent, azodicarbonamide foaming agent, aluminium powder foaming agent.
So, blowing agent type has considerable influence to the pass of aerogel foam concrete, pore-size distribution, water absorption rate, heat-insulating property, the present invention can both prepare aerogel foam concrete by physical blowing mode, and aerogel foam concrete can also be prepared by chemical blowing mode.Physical blowing mode is to use air compressor machine or mechanical agitation mode by physical blowing agent（One kind in rosin foaming agent, synthesis class surfactant foaming agent, vegetable protein foaming agent, animal protein foaming agent）, polymer emulsion（One kind in acrylic emulsion, polyaminoester emulsion, epoxy resin latex, silicone resin emulsion, fluorocarbon resin emulsion, polyvinyl alcohol emulsions, ethylene/vinyl acetate copolymer emulsion）And the foaming agent solution that the foaming agent solution or physical blowing agent and water of water composition are constituted is prepared into preformed foam, then mixes preformed foam with wet compound, mechanical agitation uniformly produces aerogel foam concrete；Chemical blowing mode is by wet compound and CBA（One kind in dioxygen water foaming agent, ammonium hydrogen carbonate foaming agent, azodicarbonamide foaming agent, aluminium powder foaming agent）Mixing, stirring produces aerogel foam concrete.
A kind of thermal conductivity factor of above-mentioned superthermal insulation aerogel foam concrete is 0.03 ~ 0.09 W/mK, and compression strength is 0.5 ~ 15.0MPa, can be widely applied to the fields such as wall thermal insulating, fire prevention, sound insulation and steel structure fireproofing.
It is specific embodiment part below.
Embodiment 1
SiO is prepared using following steps2Aerogel foam concrete：
（1）Pending SiO is detected using contact angle measurement2Aerogel powder surface and the contact angle of water, testing result are 55 °, are then 56 μm of SiO by particle diameter2Aerogel powder is positioned in vacuum furnace, the HMDS after weighing is positioned in vacuum furnace with container, heating and gasifying, and hydrophobically modified 1.5h obtains hydrophobic SiO2Aerogel powder, hydrophobic SiO is detected with contact angle measurement2Aerogel powder surface and the contact angle of water, testing result are 147 °；
（2）At room temperature, in mass ratio 1:1:100 weigh ethanol, n-hexane and deionized water, are well mixed, are configured to surface hydrophilic modification solution；
（3）By hydrophobic SiO2The volume ratio 1 of aerogel powder and surface hydrophilic modification solution:3, surface modification solution is weighed, and pour into corresponding container, step will be passed through（1）Hydrophobic SiO2Aerogel powder is mixed with surface hydrophilic modification solution, after ball-milling treatment 25min, takes out filtering；
（4）By step（3）Contain the SiO of hydrophilic modifying solution in obtained surface2Aerogel powder is positioned in far infrared drying stove, at a temperature of 120 DEG C, dries 0.5h, furnace cooling is to taking-up after less than 50 DEG C, to SiO2The cross section of aerogel powder is detected that testing result is shown, surface hydrophilic thickness degree is 7.9 μm；
（5）Step is weighed successively by proportioning（4）SiO2Aerogel powder, 425 Portland cements, haydite, redispersable latex powder, hydroxymethyl cellulose, polycarboxylic acids dehydragent, sodium sulphate, aluminium hydroxide, the paraffin of microcapsule coated, carry out dry mixed, obtain dry mixture；
（6）By step（5）Obtained dry mixture adds water and hexahydro -1,3, and 5- triethyl groups-triazine preservative carries out wet-mixing, obtains wet compound；
（7）The aqueous solution containing animal protein foaming agent is foamed using foaming machine, the volume ratio of animal protein foaming agent and water is 1:20, foams are made；
（8）By step（6）Obtained wet compound is mixed with foams, and mechanical agitation 1min produces SiO2Aerogel foam concrete,Table 1The SiO made from the present embodiment2Performance indications of the aerogel foam concrete Jing Guo 28d standard curings.
Table 1 SiO2The performance indications of aerogel foam concrete
Embodiment 2
SiO is prepared using following steps2Aerogel foam concrete：
（1）Pending SiO is detected using contact angle measurement2Aerogel powder surface and the contact angle of water, testing result are 45 °, are then 67 μm of SiO by particle diameter2Aerogel powder is positioned in vacuum furnace, the trim,ethylchlorosilane after weighing is positioned in vacuum furnace with container, heating and gasifying, and hydrophobically modified 1.5h obtains hydrophobic SiO2Aerogel powder, hydrophobic SiO is detected with contact angle measurement2Aerogel powder surface and the contact angle of water, testing result are 146 °；
（2）At room temperature, in mass ratio 1:1:1000 weigh sodium sulfate of polyethenoxy ether of fatty alcohol, sodium alkyl benzene sulfonate, n-hexane and deionized water, are well mixed, are configured to surface hydrophilic modification solution；
（3）By hydrophobic SiO2The volume ratio 1 of aerogel powder and surface hydrophilic modification solution:3, surface modification solution is weighed, and pour into corresponding container, step will be passed through（1）Hydrophobic SiO2Aerogel powder is put into the container being made up of screen pack, is together immersed in surface hydrophilic modification solution, is taken out after 2min；
（4）By step（3）Contain the SiO of hydrophilic modifying solution in obtained surface2Aerogel powder is positioned in air dry oven, at a temperature of 120 DEG C, dries 0.5h, furnace cooling is to taking-up after less than 50 DEG C, to SiO2The cross section of aerogel powder is detected that testing result is shown, surface hydrophilic thickness degree is 1.3 μm；
（5）Step is weighed successively by proportioning（4）SiO2Aerogel powder, 425 Portland cements, haydite, redispersable latex powder, hydroxyethyl cellulose, polycarboxylic acids dehydragent, sodium nitrate, polypropylene fibre, progress dry mixed, obtain dry mixture；
（6）By step（5）Obtained dry mixture adds water carry out wet-mixing, obtains wet compound；
（7）Prepared by foams, the aqueous solution containing vegetable protein foaming agent is foamed using foaming machine, and the volume ratio of vegetable protein foaming agent and water is 1:30, foams are made；
（8）By step（6）Obtained wet compound is mixed with foams, and mechanical agitation 1min produces SiO2Aerogel foam concrete.Table 2The SiO made from the present embodiment2Performance indications of the aerogel foam concrete Jing Guo 28d standard curings.
Table 2 SiO2The performance indications of aerogel foam concrete
Embodiment 3
SiO is prepared using following steps2Aerogel foam concrete：
（1）Pending SiO is detected using contact angle measurement2Aerogel powder surface and the contact angle of water, testing result are 45 °, then by SiO of the particle diameter for 0.1mm2Aerogel powder is positioned in vacuum furnace, the HMDS after weighing is positioned in vacuum furnace with container, heating and gasifying, and hydrophobically modified 1.5h obtains hydrophobic SiO2Aerogel powder, hydrophobic SiO is detected with contact angle measurement2Aerogel powder surface and the contact angle of water, testing result are 146 °；
（2）At room temperature, in mass ratio 1:4:10 weigh n-hexane, sodium alkyl benzene sulfonate and deionized water, are well mixed, are configured to surface hydrophilic modification solution；
（3）By hydrophobic SiO2The volume ratio 1 of aerogel powder and surface hydrophilic modification solution:3, surface modification solution is weighed, and pour into corresponding container, step will be passed through（1）Hydrophobic SiO2Aerogel powder is put into the container being made up of screen pack, is together immersed in surface hydrophilic modification solution, is taken out after 1min；
（4）By step（3）Contain the SiO of hydrophilic modifying solution in obtained surface2Aerogel powder is positioned in far infrared drying stove, at a temperature of 120 DEG C, dries 0.5h, furnace cooling is to taking-up after less than 50 DEG C, after fractureing, to SiO2The cross section of aerogel powder is detected that testing result is shown, surface hydrophilic thickness degree is 99.7 μm；
（5）Step is weighed successively by proportioning（4）SiO2Aerogel powder, 425 Portland cements, haydite, starch, polycarboxylic acids dehydragent, aluminum sulfate, carry out dry mixed, obtain dry mixture；
（6）By step（5）Obtained dry mixture adds water and carries out wet-mixing with acrylic emulsion, obtains wet compound；
（7）Prepared by foams, the aqueous solution containing lauryl sodium sulfate foaming agent and acrylic emulsion is foamed using foaming machine, and the volume ratio of lauryl sodium sulfate foaming agent and water is 1:80, foams are made；
（8）By step（6）Obtained wet compound is mixed with foams, and mechanical agitation 3min produces SiO2Aerogel foam concrete.Table 3The SiO made from the present embodiment2Performance indications of the aerogel foam concrete Jing Guo 28d standard curings.
Table 3 SiO2The performance indications of aerogel foam concrete
Embodiment 4
SiO is prepared using following steps2Aerogel foam concrete：
（1）Pending SiO is detected using contact angle measurement2Aerogel powder surface and the contact angle of water, testing result are 31 °, then by SiO of the particle diameter for 1.2mm2Aerogel powder is positioned in vacuum furnace, the trim,ethylchlorosilane after weighing is positioned in vacuum furnace with container, heating and gasifying, and hydrophobically modified 1.5h obtains hydrophobic SiO2Aerogel powder, hydrophobic SiO is detected with contact angle measurement2Aerogel powder surface and the contact angle of water, testing result are 150 °；
（2）At room temperature, in mass ratio 1:0.5:1000 weigh n-hexane, sodium alkyl benzene sulfonate and deionized water, are well mixed, are configured to surface hydrophilic modification solution；
（3）By hydrophobic SiO2The volume ratio 1 of aerogel powder and surface hydrophilic modification solution:3, surface modification solution is weighed, and pour into corresponding container, step will be passed through（1）Hydrophobic SiO2Aerogel powder is put into the container being made up of screen pack, is together immersed in surface hydrophilic modification solution, is taken out after 1min；
（4）By step（3）Contain the SiO of hydrophilic modifying solution in obtained surface2Aeroge sheet material is positioned in far infrared drying stove, at a temperature of 120 DEG C, dries 0.5h, furnace cooling is to taking-up after less than 50 DEG C, to SiO2The cross section of aerogel powder is detected that testing result is shown, surface hydrophilic thickness degree is 0.1 μm；
（5）Step is weighed successively by proportioning（4）SiO2Aerogel powder, 425 Portland cements, glass bead, redispersable latex powder, hydroxymethyl cellulose, polycarboxylic acids dehydragent, lithium carbonate, organosilicon moisture repellent, carry out dry mixed, obtain dry mixture；
（6）By step（5）Obtained dry mixture adds water carry out wet-mixing, obtains wet compound；
（7）Prepared by foams, the aqueous solution containing animal protein foaming agent is foamed using foaming machine, and the volume ratio of animal protein foaming agent and water is 1:15, foams are made；
（8）By step（6）Obtained wet compound is mixed with foams, and mechanical agitation 1min produces SiO2Aerogel foam concrete.Table 4The SiO made from the present embodiment2Performance indications of the aerogel foam concrete Jing Guo 28d standard curings.
Table 4 SiO2The performance indications of aerogel foam concrete
Embodiment 5
SiO is prepared using following steps2Aerogel foam concrete：
（1）The SiO that pending particle diameter is 77 μm is detected using contact angle measurement2Aerogel powder surface and the contact angle of water, testing result are 140 °, then the SiO2Aerogel powder has hydrophobicity；
（2）At room temperature, in mass ratio 1:0.6:150 weigh sldium lauryl sulfate, acetone and deionized water, are well mixed, are configured to surface hydrophilic modification solution；
（3）By hydrophobic SiO2The volume ratio 1 of aerogel powder and surface hydrophilic modification solution:3, surface modification solution is weighed, and pour into corresponding container, step will be passed through（1）Hydrophobic SiO2Aerogel powder is mixed with surface hydrophilic modification solution, after ball-milling treatment 25min, takes out filtering；
（4）By step（3）Contain the SiO of hydrophilic modifying solution in obtained surface2Aerogel powder is positioned in air dry oven, at a temperature of 120 DEG C, dries 0.5h, furnace cooling is to taking-up after less than 50 DEG C, to SiO2The cross section of aerogel powder is detected that testing result is shown, surface hydrophilic thickness degree is 6.9 μm；
（5）Step is weighed successively by proportioning（4）SiO2Aerogel powder, 425 Portland cements, flyash, haydite, redispersable latex powder, hydroxyethyl cellulose, polycarboxylic acids dehydragent, sodium sulphate, carry out dry mixed, obtain dry mixture；
（6）By step（5）Obtained dry mixture adds water carry out wet-mixing, obtains wet compound；
（7）By step（6）Obtained wet compound is mixed with aluminium powder foaming agent, mechanical agitation 10min, foaming, produces SiO2Aerogel foam concrete.Table 5The SiO made from the present embodiment2Performance indications of the aerogel foam concrete Jing Guo 28d standard curings.
Table 5 SiO2The performance indications of aerogel foam concrete
Embodiment 6
SiO is prepared using following steps2Aerogel foam concrete：
（1）The SiO that pending particle diameter is 75 μm is detected using contact angle measurement2Aerogel powder surface and the contact angle of water, testing result are 141 °, then the SiO2Aerogel powder has hydrophobicity；
（2）At room temperature, in mass ratio 1:0.3:100 weigh NPE, n-hexane and deionized water, are well mixed, are configured to surface hydrophilic modification solution；
（3）By hydrophobic SiO2The volume ratio 1 of aerogel powder and surface hydrophilic modification solution:3, surface modification solution is weighed, and pour into corresponding container, step will be passed through（1）Hydrophobic SiO2Aerogel powder is mixed with surface hydrophilic modification solution, after ball milling 15min, takes out filtering；
（4）By step（3）Contain the SiO of hydrophilic modifying solution in obtained surface2Aerogel powder is positioned in far infrared drying stove, at a temperature of 120 DEG C, dries 0.5h, furnace cooling is to taking-up after less than 50 DEG C, to SiO2The cross section of aerogel powder is detected that testing result is shown, surface hydrophilic thickness degree is 11.1 μm；
（5）Step is weighed successively by proportioning（4）SiO2Aerogel powder, 425 Portland cements, flyash, haydite, redispersable latex powder, starch, polycarboxylic acids dehydragent, sodium sulphate, organosilicon moisture repellent, carry out dry mixed, obtain dry mixture；
（6）By step（5）Obtained dry mixture adds water carry out wet-mixing, obtains wet compound；
（7）By step（6）Obtained wet compound is mixed with dioxygen water foaming agent, mechanical agitation 2min, foaming, produces SiO2Aerogel foam concrete.Table 6The SiO made from the present embodiment2Performance indications of the aerogel foam concrete Jing Guo 28d standard curings.
Table 6 SiO2The performance indications of aerogel foam concrete
Embodiment 7
SiO is prepared using following steps2Aerogel foam concrete：
（1）The SiO that pending particle diameter is 0.3mm is detected using contact angle measurement2Aerogel powder surface and the contact angle of water, testing result are 148 °, then the SiO2Aerogel powder has hydrophobicity；
（2）At room temperature, in mass ratio 1:0.4:0.3:130 weigh AESA, n-hexane, ethanol and deionized water, are well mixed, are configured to surface hydrophilic modification solution；
（3）By hydrophobic SiO2The volume ratio 1 of aerogel powder and surface hydrophilic modification solution:3, surface modification solution is weighed, and pour into corresponding container, step will be passed through（1）Hydrophobic SiO2Aerogel powder is mixed with surface hydrophilic modification solution, after mechanical agitation 15min, and rotating speed is 2500 turns/min, filtering；
（4）By step（3）Contain the SiO of hydrophilic modifying solution in obtained surface2Aerogel powder is positioned in far infrared drying stove, at a temperature of 120 DEG C, dries 0.5h, furnace cooling is to taking-up after less than 50 DEG C, to SiO2The cross section of aerogel powder is detected that testing result is shown, surface hydrophilic thickness degree is 11.1 μm；
（5）Step is weighed successively by proportioning（4）SiO2Aerogel powder, 525 Portland cements, sulphate aluminium cement, haydite, redispersable latex powder, hydroxymethyl cellulose, polycarboxylic acids dehydragent, sodium sulphate, carry out dry mixed, obtain dry mixture；
（6）By step（5）Obtained dry mixture adds water carry out wet-mixing, obtains wet compound；
（7）By step（6）Obtained wet compound is mixed with ammonium hydrogen carbonate foaming agent, mechanical agitation 2min, foaming, produces SiO2Aerogel foam concrete.Table 7The SiO made from the present embodiment2Performance indications of the aerogel foam concrete Jing Guo 28d standard curings.
Table 7 SiO2The performance indications of aerogel foam concrete
Embodiment 8
TiO is prepared using following steps2Aerogel foam concrete：
（1）The TiO that pending particle diameter is 59 μm is detected using contact angle measurement2Aerogel powder surface and the contact angle of water, testing result are 145 °, then the TiO2Aerogel powder has hydrophobicity；
（2）At room temperature, in mass ratio 1:0.8:120 weigh acetone, n-hexane and deionized water, are well mixed, are configured to surface hydrophilic modification solution；
（3）By hydrophobic TiO2The volume ratio 1 of aerogel powder and surface hydrophilic modification solution:3, surface modification solution is weighed, and pour into corresponding container, step will be passed through（1）Hydrophobic TiO2Aerogel powder is mixed with surface hydrophilic modification solution, after mechanical agitation 15min, and rotating speed is 2000 turns/min, filtering；
（4）By step（3）Contain the TiO of hydrophilic modifying solution in obtained surface2Aerogel powder is positioned in air dry oven, at a temperature of 120 DEG C, dries 0.5h, furnace cooling is to taking-up after less than 50 DEG C, to TiO2The cross section of aerogel powder is detected that testing result is shown, surface hydrophilic thickness degree is 8.4 μm；
（5）Step is weighed successively by proportioning（4）TiO2Aerogel powder, 425 Portland cements, flyash, haydite, redispersable latex powder, hydroxymethyl cellulose, polycarboxylic acids dehydragent, sodium sulphate, organosilicon moisture repellent, carry out dry mixed, obtain dry mixture；
（6）By step（5）Obtained dry mixture adds water carry out wet-mixing, obtains wet compound；
（7）By step（6）Obtained wet compound is mixed with dioxygen water foaming agent, mechanical agitation 2min, foaming, produces TiO2Aerogel foam concrete.Table 8The TiO made from the present embodiment2Performance indications of the aerogel foam concrete Jing Guo 28d standard curings.
Table 8 TiO2The performance indications of aerogel foam concrete
Embodiment 9
SiO is prepared using following steps2Aerogel foam concrete：
（1）Pending SiO is detected using contact angle measurement2Aerogel powder surface and the contact angle of water, testing result are 31 °, are then 22 μm of SiO by particle diameter2Aerogel powder is positioned in vacuum furnace, the HMDS after weighing is positioned in vacuum furnace with container, heating and gasifying, and hydrophobically modified 2.5h obtains hydrophobic SiO2Aerogel powder, hydrophobic SiO is detected with contact angle measurement2Aerogel powder surface and the contact angle of water, testing result are 150 °；
（2）At room temperature, in mass ratio 1:0.5:1000 weigh n-hexane, glycerine and deionized water, are well mixed, are configured to surface hydrophilic modification solution；
（3）By hydrophobic SiO2The volume ratio 1 of aerogel powder and surface hydrophilic modification solution:3, surface modification solution is weighed, and pour into corresponding container, step will be passed through（1）Hydrophobic SiO2Aerogel powder is put into the container being made up of screen pack, is together immersed in surface hydrophilic modification solution, is taken out after 1min；
（4）By step（3）Contain the SiO of hydrophilic modifying solution in obtained surface2Aeroge sheet material is positioned in far infrared drying stove, at a temperature of 120 DEG C, dries 0.5h, furnace cooling is to taking-up after less than 50 DEG C, to SiO2The cross section of aerogel powder is detected that testing result is shown, surface hydrophilic thickness degree is 2.2 μm；
（5）Step is weighed successively by proportioning（4）SiO2Aerogel powder, 425 Portland cements, semi-hydrated gypsum, polycarboxylic acids dehydragent, sodium citrate, magnesium hydroxide, microcapsule coated octadecane, carry out dry mixed, obtain dry mixture；
（6）By step（5）Obtained dry mixture adds water and carries out wet-mixing with acrylic emulsion, obtains wet compound；
（7）Prepared by foams, the foaming agent solution being made up of foaming agent, acrylic emulsion and water is foamed using foaming machine, and the volume ratio of animal protein foaming agent and water is 1:0.05:80, foams are made；
（8）By step（6）Obtained wet compound is mixed with foams, and mechanical agitation 1min produces SiO2Aerogel foam concrete.Table 9The SiO made from the present embodiment2Performance indications of the aerogel foam concrete Jing Guo 28d standard curings.
Table 9 SiO2The performance indications of aerogel foam concrete
Embodiment 10
SiO is prepared using following steps2Aerogel foam concrete：
（1）The SiO that pending particle diameter is 177 μm is detected using contact angle measurement2Aerogel powder surface and the contact angle of water, testing result are 141 °, then the SiO2Aerogel powder has hydrophobicity；
（2）At room temperature, in mass ratio 1:100 weigh acetone and deionized water, are well mixed, are configured to surface hydrophilic modification solution；
（3）By hydrophobic SiO2The volume ratio 1 of aerogel powder and surface hydrophilic modification solution:3, surface modification solution is weighed, and pour into corresponding container, step will be passed through（1）Hydrophobic SiO2Aerogel powder is mixed with surface hydrophilic modification solution, after ball-milling treatment 25min, takes out filtering；
（4）By step（3）Contain the SiO of hydrophilic modifying solution in obtained surface2Aerogel powder is positioned in air dry oven, at a temperature of 120 DEG C, dries 0.5h, furnace cooling is to taking-up after less than 50 DEG C, to SiO2The cross section of aerogel powder is detected that testing result is shown, surface hydrophilic thickness degree is 6.5 μm；
（5）Step is weighed successively by proportioning（4）SiO2Aerogel powder, flyash, redispersable latex powder, hydroxyethyl cellulose, polycarboxylic acids dehydragent, polypropylene fibre, carry out dry mixed, obtain dry mixture；
（6）By step（5）Add water glass and water of obtained dry mixture carries out wet-mixing, obtains wet compound；
（7）By step（6）Obtained wet compound is mixed with aluminium powder foaming agent, mechanical agitation 5min, foaming, produces SiO2Aerogel foam concrete.Table 10 is SiO made from the present embodiment2Performance indications after aerogel foam concrete is fully hardened.
Table 10 SiO2The performance indications of aerogel foam concrete
Above-described embodiment is the present invention preferably embodiment; but embodiments of the present invention are simultaneously not restricted to the described embodiments; other any Spirit Essences without departing from the present invention and the change made under principle, modification, replacement, combine, simplification; equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (10)
1. a kind of superthermal insulation aerogel foam concrete, it is characterised in that be made up of aerogel powder and foam concrete, the aerogel powder is made up of inner hydrophobic layer and surface hydrophilic layer, the surface hydrophilic thickness degree is 0.1 ~ 100 μm.
2. a kind of preparation method of superthermal insulation aerogel foam concrete, it is characterised in that comprise the following steps：
（1）Aerogel powder is modified；
（2）By step（1）Obtained aerogel powder is dry-mixed with binder materials, and then add water wet mixing；
（3）By step（2）Obtained wet compound is mixed with foaming agent, stirring.
3. a kind of preparation method of superthermal insulation aerogel foam concrete according to claim 2, it is characterised in that the step（1）Including hydrophobically modified step；The hydrophobically modified step is to carry out hydrophobically modified to aerogel powder in closed hydrophobic modifier gaseous environment；The hydrophobic modifier be trim,ethylchlorosilane, HMDS, HMDO, MTMS, MTES, dimethyldimethoxysil,ne, dimethyldiethoxysilane, γ-aminopropyltrimethoxysilane, gamma-aminopropyl-triethoxy-silane, γ-（The oxygen of 2,3- epoxies third）Propyl trimethoxy silicane, γ-methacryloxypropyl trimethoxy silane, N-（β-aminoethyl）One or more in-gamma-aminopropyl-triethoxy-silane.
4. a kind of preparation method of superthermal insulation aerogel foam concrete according to claim 2, it is characterised in that the step（1）Also include surface hydrophilic modification step；The surface hydrophilic modification step is that hydrophobic aerogel powder surface is modified using surface hydrophilic modification solution；The surface hydrophilic modification solution is surfactant and the aqueous solution or the aqueous solution of low surface tension solvent of low surface tension solvent；The surfactant is the one or more in anionic surfactant, cationic surface active agent, amphoteric surfactant, nonionic surface active agent；The anionic surfactant is the one or more in fatty alcohol phosphates, aliphatic alcohol polyoxyvinethene phosphate salt, alkyl sulfate, fatty alcohol polyoxyethylene ether sulfate, fatty acid glyceride sulfate, sulphation ricinoleate, cycloalkanes sulfate, fatty acid amide alkyl sulfate, alkylbenzenesulfonate, alkylsulfonate, fatty acid methyl ester ethoxylate sulfonate, MES, aliphatic alcohol polyethenoxy ether carboxylate；The cationic surface active agent is aliphatic ammonium salt；The amphoteric surfactant is the one or more in alkyl amino acid, carboxylic acid group's glycine betaine, sulfobetaines, phosphate glycine betaine, alkyl hydroxy amine oxide；The nonionic surface active agent is the one or more in aliphatic polyester, APES, high-carbon fatty alcohol polyoxyethylene ether, polyoxyethylene carboxylate, fatty acid methyl ester ethoxylate, the oxireme addition product of polypropylene glycol, sorbitan ester, sucrose fatty ester, alkyl esteramides；The low surface tension solvent is the one or more in acetone, n-hexane, pentane, normal heptane, ethanol, isopropanol, the tert-butyl alcohol, propane diols, glycerine.
5. a kind of preparation method of superthermal insulation aerogel foam concrete according to claim 4, it is characterised in that in the surface hydrophilic modification step, in addition to additional physical field action step；The additional physical field action step is one kind in far infrared radiation, stirring, ultrasonication, ball milling.
6. a kind of preparation method of superthermal insulation aerogel foam concrete according to claim 2, it is characterised in that the step（1）Also include drying process step；The drying process step is one kind in far-infrared ray drying, spray drying, microwave drying, constant pressure and dry, supercritical drying, subcritical drying, freeze-drying.
7. a kind of preparation method of superthermal insulation aerogel foam concrete according to claim 2, characterized in that, the binder materials is the one or more in portland cement, aluminate cement, sulphate aluminium cement, magnesia oxychloride cement, gypsum, lime, waterglass, acrylic emulsion, polyaminoester emulsion, epoxy resin latex, silicone resin emulsion, fluorocarbon resin emulsion, polyvinyl alcohol emulsions, ethylene/vinyl acetate copolymer emulsion.
8. a kind of preparation method of superthermal insulation aerogel foam concrete according to claim 2, it is characterised in that the step（2）And/or the step（3）In can also add the one or more in phase-changing energy storage material, lightweight aggregate, admixture, fiber, fire retardant, wood powder, additive.
9. a kind of preparation method of superthermal insulation aerogel foam concrete according to claim 8, it is characterised in that the phase-changing energy storage material is the one or more in the inorganic water and salt, higher aliphatic hydrocarbon, polyalcohol, multi-hydroxy carboxy acid of microcapsule coated；The lightweight aggregate is haydite, clinker, expanded vermiculite, pelelith, expanded perlite, glass bead, light weight sand, polyurethane foam particles, the one or more of polystyrene foam particles；The admixture is the one or more in adding calcium fly ash, II grade of flyash, silicon ash, ground slag powder, phosphorus slag powder；The fiber is the one or more in styroflex, polypropylene fibre, lignin fibre, alkali-resistant glass fibre, steel fibre；The fire retardant is one or both of magnesium hydroxide, aluminium hydroxide；The additive is the one or more in the surfactant, water reducer, hydrophober, coagulant, retarder, thickener, foam stabilizer, preservative；The water reducer is the one or more in polycarboxylic acids dehydragent, lignin sulfonic acid sodium salt water reducer, naphthalene water reducer, aliphatic water reducing agent, amino water reducer；The hydrophober is the one or more in hard sulfonate hydrophober, organosilicon moisture repellent；The coagulant is the one or more in sodium metasilicate, aluminum sulfate, sodium nitrate, calcium nitrate, sodium sulphate, sodium carbonate, lithium carbonate；The retarder is the one or more in citric acid, sodium polyphosphate, bone glue protein, borax；The thickener is the one or more in methylcellulose, ethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, bentonite, white carbon, starch；The foam stabilizer is the one or more in polyacrylamide, polyvinyl alcohol, silicones polyethers emulsion, DDAO, alkylolamides；The preservative is the one or more in 1,2- benzisothiazole-3-ketones, CMIT, MIT, 1,3,5- tri- (2- ethoxys) s-triazine, hexahydro -1,3,5- triethyl groups-triazine.
10. a kind of preparation method of superthermal insulation aerogel foam concrete according to claim 2, characterized in that, the foaming agent is the one or more in rosin foaming agent, synthesis class surfactant foaming agent, vegetable protein foaming agent, animal protein foaming agent, dioxygen water foaming agent, ammonium hydrogen carbonate foaming agent, azodicarbonamide foaming agent, aluminium powder foaming agent.
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