CN104086150A - Heat-insulated aerogel material for building and preparation method of heat-insulated aerogel material - Google Patents
Heat-insulated aerogel material for building and preparation method of heat-insulated aerogel material Download PDFInfo
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- CN104086150A CN104086150A CN201410329168.7A CN201410329168A CN104086150A CN 104086150 A CN104086150 A CN 104086150A CN 201410329168 A CN201410329168 A CN 201410329168A CN 104086150 A CN104086150 A CN 104086150A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
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- Organic Chemistry (AREA)
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- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
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Abstract
The invention discloses a heat-insulated aerogel material for a building and a preparation method of the heat-insulated aerogel material. The heat-insulated aerogel material for the building is characterized by comprising the following raw materials in parts by weight: 70-90 parts of silica sol, 10-28 parts of polyvinyl alcohol hot melt adhesive and 1-2 parts of a hydrophobing agent. According to the method, the silica sol is taken as a main body; the polyvinyl alcohol hot melt adhesive is taken as thermoplastic molten colloid; an inert gas is taken as a support body; the gel is extruded in a container by instantaneous high temperature and high pressure of a continuous kneading screw reaction machine; liquid components in the wet gel expand in a die orifice because of instantaneous evaporation; the inert gas is taken as an aerogel support body when the liquid components volatilize. Thus the intact skeleton structure of the aerogel is prevented from collapsing, and transformation from the wet gel to the aerogel is finished. By adopting the preparation process disclosed by the invention, a complicated process of a supercritical drying method is avoided; the defect of collapse of an aerogel duct in an ambient pressure drying process is also avoided; the preparation method has a simple production process, a stable operation and continuous large-scale production; the obtained aerogel has good strength, high porosity and excellent thermal insulation properties, and can be applied to the fields of insulation boards for the buildings, thermal mortar, thermal insulation coatings and the like.
Description
Technical field
The present invention relates to building heat preservation lagging material field, be specifically related to the heat insulation aerogel material of a kind of building heat preservation and preparation method.
Background technology
Energy problem of the world today has become the significant problem interfereing with the development, because architectural energy consumption accounts for 30%～40% in whole energy consumption, so building energy conservation is significant.Building heat preservation lagging material is important measures of building energy conservation, and the insulation form that domestic market is most widely used is external wall outer insulation, and because organic insulation material thermal conductivity is low, heat preservation and insulation is good, is widely used at present building energy conservation.But organic insulation material exists all drawbacks, such as starting material use petroleum resources, the feature of environmental protection is poor, inflammable, weathering resistance is poor, easily aging etc.Especially along with applying further deeply, the inflammable defect of organic insulation material progressively exposes, the serious safety that threatens people.Therefore the lagging material that low thermal conductivity, high temperature do not fire becomes the development trend in building thermal-insulation energy-saving field.
Aerogel has three-D nano-porous structure, and hole ratio is high, and specific surface area is large, thermal conductivity is low, is the solid-state material that current thermal conductivity is minimum, has excellent heat-insulating property and fire resistance, be the ideal substitute of traditional lagging material, have a good application prospect, shown great attention to by domestic and international.But aerogel is because of its complicated process of preparation, and production cost costliness, all the time only in high-end field application such as space flight and aviation, military project, medical carriers.Be applied to building thermal-insulation energy-saving field face and the Bottleneck Restrictions that cost is high, yield poorly.At present, the preparation of aerogel is conventionally by sol-gel process and supercritical drying processing, in sol-gel process, by controlling hydrolysis and the polycondensation condition of solution, in solution, form the nano atomic group of multi-pore channel structure, between nano atomic group, mutually bonding forms gelinite, and the solid-state skeleton of gelinite is full of remaining liquid reagent after chemical reaction around.In order to prevent micro-void collapse in gel drying process, conventionally adopt supercritical drying art breading.Supercritical drying drying process can keep the porous network structure of gel preferably, but the required condition of supercritical drying is very harsh, preparation cycle length consuming time, high to equipment requirements, energy consumption is large, cannot realize continuous production, causes the price of aerogel product extremely expensive.Although aerogel has good insulation, heat insulation, fire resistance, the aerogel that prior art is produced, cannot be in building heat preservation field large-scale application due to high cost.In order to break through the restriction of aerogel cost in the application of the heat insulation field of building heat preservation, in recent years, constantly occur that employing non-supercritical desiccating method prepares aerogel.
China Patent Publication No. is a kind of preparation and the method that CN102557577A discloses silicon dioxide silica aerogel composite material.The method is done strongthener with fiber, has obtained aerosil by segmentation constant pressure and dry under washing, differing temps, not only needs a large amount of solvents, and length consuming time.
China Patent Publication No. is the low cost preparation method that CN201310000374 discloses a kind of aerosil.The preparation of this aerogel adopts tensio-active agent, liquid/gas interface is eliminated or is converted into the interface of less sticking power, it is destroyed in limited range the integrated degree of network structure in drying process, but along with the increase of aerogel duct rate and the size of a large amount of tiny pores are in nano level, capillary effect causes dry difficulty, and is difficult to obtain the aerogel of porous.
Up to the present, adopt non-supercritical desiccating method to prepare aerogel technology and mainly concentrate on the support strength that improves gel structure network structure and the impact that reduces capillary absorption power, also not forming comparatively proven technique scheme, cannot be that aerogel material is dry ensureing that the non-destructive prerequisite of aerogel network structure is issued to completely.The present invention proposes a kind of technical scheme, so as to reaching aerogel successive drying, high strength, key index cheaply for this reason.Make aerogel material can substitute the application of existing organic heat-insulating plate in external thermal insulation system; substitute inorganic glass bead and be applied to thermal insulation mortar; sneak into coating and cause coating to possess heat insulating effect, reach the widespread use of aerogel material in wall thermal insulating field.
Summary of the invention
The present invention is directed to that current aerogel intensity is low, the defect of complicated process of preparation, cost costliness, a kind of heat insulation aerogel material of building heat preservation that can be used for building energy saving field is provided.The heat insulation aerogel of described building heat preservation is made up of silicon dioxide gel and polyvinyl alcohol hot melt adhesive.
Further aim of the present invention is to provide the preparation method of the heat insulation aerogel material of a kind of building heat preservation, the method is taking silicon dioxide gel as main body, taking polyvinyl alcohol hot melt adhesive as thermoplasticity melten gel body, taking rare gas element as supporter, by the TRANSIENT HIGH TEMPERATURE of continuous kneading formula spiro rod reaction machine, high pressure, gel is extruded in container, liquid component in wet gel produces expansion at die orifice because of the evaporation of moment, in liquid component volatilization, rare gas element is as aerogel supporter, guarantee the not collapse of skeleton structure that aerogel is complete, complete the transformation of wet gel to aerogel.
The heat insulation aerogel of a kind of building heat preservation of the present invention, provides following solution:
1, the heat insulation aerogel material of a kind of building heat preservation of the present invention, is characterized in that raw material composition (weight part) is: silicon dioxide gel 70-90 part, polyvinyl alcohol hot melt adhesive 10-28 part, hydrophobizing agent 1-2 part.
2, above-mentioned silicon dioxide gel be by methyl silicate or teos hydrolysis and colloidal sol, solid content 50-60%.
3, above-mentioned polyvinyl alcohol hot melt adhesive is to grind by mechanical force and chemical the fines that modification obtains by polyvinyl alcohol, glycerol, Polyethylene glycol-2000, linking agent, wherein polyvinyl alcohol is selected the 17-88 of fineness 200 orders, alcoholysis degree 87%～89%, and linking agent is at least one in hexanodioic acid, succinic acid, MALEIC ANHYDRIDE, borax.
4, hydrophobizing agent described above is at least one in isopropoxy three (dioctyl pyrophosphate) titanium, second two ester groups (dioctyl pyrophosphate) titanium, distearyl ethylene titanium.
5, the preparation method of the heat insulation aerogel material of a kind of building heat preservation of the present invention has the following steps:
(1) prepare silicon dioxide gel;
(2) prepare polyvinyl alcohol hot melt adhesive;
(3) prepare ageing wet gel;
(4) prepare the heat insulation aerogel of building heat preservation.
6, as described in above-mentioned preparation method, prepare silicon dioxide gel, that the methyl silicate of 50-60 weight part or tetraethoxy, 20-30 weight part alcoholic solvent are joined and in container, stir 5-10 minute, add 5-10 weight part Union carbide A-162, add 10-15 part water, stir 3-5 minute, adding hydrochloric acid conditioning solution pH is 3-5, sets 80-100 DEG C of container oil temperature Heating temperature and continues to stir hydrolysis 30-60 minute and obtain.
7, as described in above-mentioned preparation method, prepare polyvinyl alcohol hot melt adhesive, that the polyvinyl alcohol of 80-90 part, 5-10 part glycerol, 2-8 part Polyethylene glycol-2000,1-3 part linking agent are ground to modification by mechanical force and chemical and obtain, shredder adopts erratic current grinding mill, make polyvinyl alcohol and the abundant stripping reaction of properties-correcting agent by eddying flow, and be 1000-1200r/min by rotary tray motor governor adjustment rotary speed, be that the pva powder that reaches certain particle size and reaction is discharged continuously, there is the production effect of continuous high-efficient.
8, the preparation ageing wet gel as described in above-mentioned preparation method, that 10-28 weight account polyethylene alcohol hot melt adhesive, 1-2 part hydrophobizing agent are added to 70-90 part silicon dioxide gel liquid, adding trolamine adjusting pH value is 8～10, stir, polyvinyl alcohol hot melt adhesive at high temperature has thermoplasticity, in water solvent, there is solvability, can be dispersed in wet gel, then put into airtight ageing tank ageing and within 24 hours, obtain ageing wet gel simultaneously.
9, as described in above-mentioned preparation method, prepare the heat insulation aerogel of building heat preservation, continuous kneading formula spiro rod reaction machine drum body temperature is risen to 100-120 DEG C, open circulating cooling water valve, control flypress temperature and maintain 100-120 DEG C, ageing wet gel is added to continuous kneading formula spiro rod reaction machine, wet gel constantly adds spiro rod reaction machine, pump into inert gas source simultaneously, wet gel becomes instantaneous molten state under the stretching of polyvinyl alcohol hot melt adhesive, the wet gel that enters die head produces expansion at die orifice because of the evaporation of moment due to liquid component, in liquid component volatilization, rare gas element is as aerogel supporter, complete the transformation of wet gel to aerogel, cut off and form uniform particulate state aerogel by dicing machine.
10, inert gas source described above is sodium bicarbonate, and it pumps in the time that wet gel enters die head, and sustained release rare gas element under instantaneous high pressure, hot conditions is guaranteed the not collapse of skeleton structure that aerogel is complete.
11, continuous kneading formula spiro rod reaction machine described above is tapering type single-screw machine, screw diameter is reduced to Φ 40mm from being fed to discharging by Φ 60cm, screw slenderness ratio is 5:1-8:1, it can carry out Fast Compression to melt material, the wetting agents such as water are evaporated rapidly from weave construction, make the countless microvoid structures of the inner formation of wet gel, there is continuous high-efficient devolatilization function.
The present invention is auxiliary using thermoplasticity melten gel body as molten state, using rare gas element as support, by kneading formula spiro rod reaction machine realized continuously, the heat insulation aerogel material of High-efficient Production building heat preservation, its outstanding feature is:
1, intensity is good.Not only assisted gas gel rapid drying under molten state of thermoplasticity melten gel body that the present invention uses, and after aerogel forms, thermoplasticity melten gel body forms continuous reticulated structure, reaches aerogel material toughness reinforcing.
2, porosity is high, heat-insulating property excellence.The present invention adopts inert gas source, in aerogel Quick drainage process, sustainable supply source of the gas, maintain complete aerogel nano bone shelf structure, thermal conductivity is lower than 0.02 W/ (m K), porosity can be greater than 96%, and specific surface area is greater than 800 m2/g, has fabulous thermal and insulating performance.
3, production technique is simply efficient.The continuous kneading formula of the present invention spiro rod reaction machine makes wet gel wink-dry and produces expansion, in liquid component volatilization, rare gas element is as aerogel supporter, guarantee the not collapse of skeleton structure that aerogel is complete, complete the transformation of wet gel to aerogel, preparation technology has avoided the complicated technology of supercritical drying, the defect that while also having avoided constant pressure and dry, aerogel duct subsides.Production technique is simple, stable operation, can produce by continuous large-scale.
4, be widely used.The present invention has the advantages that can continuous large-scale to produce, and effectively reduces aerogel cost, impels in building energy saving field widespread use, can be applicable to the fields such as heat preservation plate material, thermal insulation mortar, thermal insulation coatings.
Embodiment
Below by embodiment, the present invention is described in further detail, but this should be interpreted as to scope of the present invention only limits to following example.In the situation that not departing from aforesaid method thought of the present invention, various replacements or the change made according to ordinary skill knowledge and customary means, all should be within the scope of the present invention.
embodiment 1
1) methyl silicate of 60 weight parts, 20 weight part ethylene glycol are joined in container and stirred 10 minutes, add 10 weight part Union carbide A-162s, add 10 parts of water, stir 3 minutes, adding hydrochloric acid conditioning solution pH is 5, set 100 DEG C of container oil temperature Heating temperatures and continue to stir hydrolysis 60 minutes, obtain silicon dioxide gel;
2) 1788,10 parts of glycerol of the polyvinyl alcohol of 80 parts, 2 parts of Polyethylene glycol-2000s, 1 part of borax are obtained to polyvinyl alcohol hot melt adhesive powder by grinding modification;
3) 10 weight account polyethylene alcohol hot melt adhesive powder, 2 parts of second two ester groups (dioctyl pyrophosphate) titanium are added to 88 parts of silicon dioxide gel liquid, adding trolamine adjusting pH value is 10, stir, polyvinyl alcohol hot melt adhesive powder is dispersed in to wet gel, then puts into airtight ageing tank ageing and within 24 hours, obtain ageing wet gel;
4) continuous JS-60 type kneading formula spiro rod reaction machine drum body temperature is risen to 120 DEG C, open circulating cooling water valve, control flypress temperature and maintain 120 DEG C, ageing wet gel is added to continuous kneading formula spiro rod reaction machine, wet gel constantly adds spiro rod reaction machine, pump into inert gas source simultaneously, wet gel becomes instantaneous molten state under the stretching of polyvinyl alcohol hot melt adhesive, the wet gel that enters die head produces expansion at die orifice because of the evaporation of moment due to liquid component, in liquid component volatilization, rare gas element is as aerogel supporter, complete the transformation of wet gel to aerogel, cut off and form uniform particulate state aerogel by dicing machine.
By test property indices as following table:
| Interventions Requested | Standard-required | The present embodiment test result |
| Porosity | ≥96% | 98 |
| Inner aperture | ≤60nm | 20 |
| Thermal conductivity | ≤0.02 W/(m·K) | 0.015 |
| Specific surface area | ≥800 m2/g | 960 |
| Young's modulus | ≥10MPa | 23 |
This aerogel is mixed after cement plate according to volume ratio 30%, and the thermal conductivity of cement plate is reduced to 0.2 W/ (mK) by 0.8W/ (mK).
embodiment 2
1) tetraethoxy of 55 weight parts, 20 weight part ethylene glycol are joined in container and stirred 10 minutes, add 10 weight part Union carbide A-162s, add 15 parts of water, stir 3 minutes, adding hydrochloric acid conditioning solution pH is 5, set 100 DEG C of container oil temperature Heating temperatures and continue to stir hydrolysis 50 minutes, obtain silicon dioxide gel;
2) polyvinyl alcohol of 90 parts 1788,5 glycerol, 2 parts of Polyethylene glycol-2000s, 3 parts of succinic acid are obtained to polyvinyl alcohol hot melt adhesive powder by grinding modification;
3) 25 parts of polyvinyl alcohol hot melt adhesive powder, 2 parts of isopropoxies three (dioctyl pyrophosphate) titanium are added to 73 parts of silicon dioxide gel liquid, adding trolamine adjusting pH value is 10, stir, polyvinyl alcohol hot melt adhesive powder is dispersed in to wet gel, then puts into airtight ageing tank ageing and within 24 hours, obtain ageing wet gel;
4) continuous JS-60 type kneading formula spiro rod reaction machine drum body temperature is risen to 120 DEG C, open circulating cooling water valve, control flypress temperature and maintain 120 DEG C, ageing wet gel is added to continuous kneading formula spiro rod reaction machine, wet gel constantly adds spiro rod reaction machine, pump into inert gas source simultaneously, wet gel becomes instantaneous molten state under the stretching of polyvinyl alcohol hot melt adhesive, the wet gel that enters die head produces expansion at die orifice because of the evaporation of moment due to liquid component, in liquid component volatilization, rare gas element is as aerogel supporter, complete the transformation of wet gel to aerogel, cut off and form uniform particulate state aerogel by dicing machine, it is the spherical of 3-5mm that aerogel is diameter.
By test property indices as following table:
| Interventions Requested | Standard-required | The present embodiment test result |
| Porosity | ≥96% | 98 |
| Inner aperture | ≤60nm | 15 |
| Thermal conductivity | ≤0.02 W/(m·K) | 0.018 |
| Specific surface area | ≥800 m2/g | 1000 |
| Young's modulus | ≥10MPa | 35 |
By 0.5 cube of this aerogel and 42.5R cement 350kg, grey calcium powder 125kg, 40-70 order sand 500kg, resin rubber powder 15kg, is mixed with thermal insulation mortar, and product meets the technical requirements of GB GB/T26000-2010 completely:
| Test event | Performance index |
| Dry density (Kg/m 3） | 200 |
| Thermal conductivity (W/m.k) | 0.05 |
| Ultimate compression strength (MPa) | 1.0 |
| Fire-protection rating (according to GB5464 standard) | A level |
embodiment 3
1) tetraethoxy of 50 weight parts, 25 weight part ethylene glycol are joined in container and stirred 5 minutes, add 5 weight part Union carbide A-162s, add 10 parts of water, stir 3 minutes, adding hydrochloric acid conditioning solution pH is 5, set 100 DEG C of container oil temperature Heating temperatures and continue to stir hydrolysis 30 minutes, obtain silicon dioxide gel;
2) polyvinyl alcohol of 85 parts 1788,8 glycerol, 4 parts of Polyethylene glycol-2000s, 3 parts of hexanodioic acids are obtained to polyvinyl alcohol hot melt adhesive powder by grinding modification;
3) 20 parts of polyvinyl alcohol hot melt adhesive powder, 2 parts of isopropoxies three (dioctyl pyrophosphate) titanium are added to 78 parts of silicon dioxide gel liquid, adding trolamine adjusting pH value is 9, stir, polyvinyl alcohol hot melt adhesive powder is dispersed in to wet gel, then puts into airtight ageing tank ageing and within 24 hours, obtain ageing wet gel;
4) continuous JS-60 type kneading formula spiro rod reaction machine drum body temperature is risen to 120 DEG C, open circulating cooling water valve, control flypress temperature and maintain 120 DEG C, ageing wet gel is added to continuous kneading formula spiro rod reaction machine, wet gel constantly adds spiro rod reaction machine, pump into inert gas source simultaneously, wet gel becomes instantaneous molten state under the stretching of polyvinyl alcohol hot melt adhesive, the wet gel that enters die head produces expansion at die orifice because of the evaporation of moment due to liquid component, in liquid component volatilization, rare gas element is as aerogel supporter, complete the transformation of wet gel to aerogel, cut off and form uniform particulate state aerogel by dicing machine, it is the spherical of 3-5mm that aerogel is diameter.
By test property indices as following table:
| Interventions Requested | Standard-required | The present embodiment test result |
| Porosity | ≥96% | 97 |
| Inner aperture | ≤60nm | 10 |
| Thermal conductivity | ≤0.02 W/(m·K) | 0.013 |
| Specific surface area | ≥800 m2/g | 1200 |
| Young's modulus | ≥10MPa | 60 |
This aerogel stirring at low speed is refined to 50-70 order for coating, and after tested, the coating after 2mm can effectively suppress the heat by conduction of heat, and heat-insulation and heat-preservation efficiency can reach 80%, and coating heat transfer coefficient only has 0.03W/mK.
Claims (8)
1. the heat insulation aerogel material of building heat preservation, is characterized in that raw material composition (weight part) is:
Silicon dioxide gel 70-90 part
Polyvinyl alcohol hot melt adhesive 10-28 part
Hydrophobizing agent 1-2 part
Wherein, described silicon dioxide gel be by methyl silicate or teos hydrolysis and colloidal sol, solid content 50-60%;
Described polyvinyl alcohol hot melt adhesive is to grind by mechanical force and chemical the fines that modification obtains by polyvinyl alcohol, glycerol, Polyethylene glycol-2000, linking agent, wherein polyvinyl alcohol is selected the 17-88 of fineness 200 orders, alcoholysis degree 87%～89%, and linking agent is selected at least one in hexanodioic acid, succinic acid, MALEIC ANHYDRIDE, borax;
Described hydrophobizing agent is at least one in isopropoxy three (dioctyl pyrophosphate) titanium, second two ester groups (dioctyl pyrophosphate) titanium, distearyl ethylene titanium.
2. the method for preparing the heat insulation aerogel material of a kind of building heat preservation described in claim 1, is characterized in that preparing in accordance with the following steps:
(1) prepare silicon dioxide gel;
(2) prepare polyvinyl alcohol hot melt adhesive;
(3) prepare ageing wet gel;
(4) prepare the heat insulation aerogel of building heat preservation.
3. prepare the method for the heat insulation aerogel material of a kind of building heat preservation described in claim 1, it is characterized in that the silicon dioxide gel of preparing claimed in claim 2, that the methyl silicate of 50-60 weight part or tetraethoxy, 20-30 weight part alcoholic solvent are joined and in container, stir 5-10 minute, add 5-10 weight part Union carbide A-162, add 10-15 part water, stir 3-5 minute, adding hydrochloric acid conditioning solution pH is 3-5, sets 80-100 DEG C of container oil temperature Heating temperature and continues to stir hydrolysis 30-60 minute and obtain.
4. prepare the method for the heat insulation aerogel material of a kind of building heat preservation described in claim 1, it is characterized in that the polyvinyl alcohol hot melt adhesive of preparing claimed in claim 2, is that the polyvinyl alcohol of 80-90 part, 5-10 part glycerol, 2-8 part Polyethylene glycol-2000,1-3 part linking agent are ground to modification by mechanical force and chemical and obtain.
5. prepare the method for the heat insulation aerogel material of a kind of building heat preservation described in claim 1, it is characterized in that preparation ageing wet gel claimed in claim 2, that 10-28 weight account polyethylene alcohol hot melt adhesive, 1-2 part hydrophobizing agent are added to 70-90 part silicon dioxide gel liquid, adding trolamine adjusting pH value is 8～10, stir, polyvinyl alcohol hot melt adhesive at high temperature has thermoplasticity, in water solvent, there is solvability simultaneously, can be dispersed in wet gel, then put into airtight ageing tank ageing and within 24 hours, obtain ageing wet gel.
6. prepare the method for the heat insulation aerogel material of a kind of building heat preservation described in claim 1, it is characterized in that the heat insulation aerogel of building heat preservation of preparing claimed in claim 2, that continuous kneading formula spiro rod reaction machine drum body temperature is risen to 100-120 DEG C, open circulating cooling water valve, control flypress temperature and maintain 100-120 DEG C, ageing wet gel is added to continuous kneading formula spiro rod reaction machine, wet gel constantly adds spiro rod reaction machine, pump into inert gas source simultaneously, wet gel becomes instantaneous molten state under the stretching of polyvinyl alcohol hot melt adhesive, the wet gel that enters die head produces expansion at die orifice because of the evaporation of moment due to liquid component, in liquid component volatilization, rare gas element is as aerogel supporter, complete the transformation of wet gel to aerogel, cut off and form uniform particulate state aerogel by dicing machine.
7. the heat insulation aerogel material of a kind of building heat preservation as claimed in claim 6, it is characterized in that the inert gas source in preparation method is sodium bicarbonate, it pumps in the time that wet gel enters die head, sustained release rare gas element under instantaneous high pressure, hot conditions, guarantees the not collapse of skeleton structure that aerogel is complete.
8. the heat insulation aerogel material of a kind of building heat preservation as claimed in claim 6, it is characterized in that described in preparation method, continuous kneading formula spiro rod reaction machine is tapering type single-screw machine, screw diameter is reduced to Φ 40mm from being fed to discharging by Φ 60cm, and screw slenderness ratio is 5:1-8:1.
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| CN201410329168.7A CN104086150B (en) | 2013-07-26 | 2014-07-11 | A kind of heat insulation aerogel material of building heat preservation and preparation method |
| PCT/CN2014/083024 WO2015010651A1 (en) | 2013-07-26 | 2014-07-25 | Building thermal insulation aerogel material and method of preparation |
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| CN2013103293777 | 2013-07-26 | ||
| CN201410329168.7A CN104086150B (en) | 2013-07-26 | 2014-07-11 | A kind of heat insulation aerogel material of building heat preservation and preparation method |
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| CN105502493A (en) * | 2015-12-23 | 2016-04-20 | 成都新柯力化工科技有限公司 | Method for preparing aerogel through magnetization and normal-pressure drying |
| CN105540598A (en) * | 2015-12-23 | 2016-05-04 | 成都新柯力化工科技有限公司 | Silica aerogel normal-pressure preparation method with expandable microcapsules |
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| CN103408279A (en) * | 2013-07-26 | 2013-11-27 | 成都新柯力化工科技有限公司 | Thermal insulation aerogel material for buildings, and preparation method of aerogel material |
| CN104029429A (en) * | 2014-06-18 | 2014-09-10 | 航天海鹰(镇江)特种材料有限公司 | Aerogel composite cloth taking hot melt adhesive as binder and preparation method for composite cloth |
| CN105314933B (en) * | 2014-08-04 | 2017-07-18 | 天津武铄科技有限公司 | A kind of low heat conductivity heat-insulating mortar |
| CN111138130B (en) * | 2020-01-03 | 2022-02-18 | 登封市嵩基水泥有限公司 | Heat-insulation cement |
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| CN101456569A (en) * | 2008-07-22 | 2009-06-17 | 绍兴纳诺气凝胶新材料研发中心有限公司 | Method for quick-speed preparing aerogel by hydro-thermal synthesis at low cost |
| CN102617101A (en) * | 2012-03-22 | 2012-08-01 | 陕西盟创纳米新型材料股份有限公司 | Method for preparing heat insulation board for exterior walls |
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| CN102079949A (en) * | 2010-12-22 | 2011-06-01 | 李志� | Preparation method of nanometer aerogel heat-insulation coating |
| CN102557577B (en) * | 2011-11-01 | 2014-03-19 | 厦门纳美特新材料科技有限公司 | Preparation method of silicon dioxide aerogel composite material |
| CN103408279A (en) * | 2013-07-26 | 2013-11-27 | 成都新柯力化工科技有限公司 | Thermal insulation aerogel material for buildings, and preparation method of aerogel material |
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- 2013-07-26 CN CN2013103293777A patent/CN103408279A/en active Pending
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- 2014-07-11 CN CN201410329168.7A patent/CN104086150B/en active Active
- 2014-07-25 WO PCT/CN2014/083024 patent/WO2015010651A1/en active Application Filing
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| CN101096273A (en) * | 2007-06-05 | 2008-01-02 | 南京工业大学 | Blocky low-density gel heat-insulation composite material |
| CN101456569A (en) * | 2008-07-22 | 2009-06-17 | 绍兴纳诺气凝胶新材料研发中心有限公司 | Method for quick-speed preparing aerogel by hydro-thermal synthesis at low cost |
| CN103130231A (en) * | 2011-11-25 | 2013-06-05 | 航天特种材料及工艺技术研究所 | Silica aerogel material and preparation method thereof |
| CN102617101A (en) * | 2012-03-22 | 2012-08-01 | 陕西盟创纳米新型材料股份有限公司 | Method for preparing heat insulation board for exterior walls |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105502493A (en) * | 2015-12-23 | 2016-04-20 | 成都新柯力化工科技有限公司 | Method for preparing aerogel through magnetization and normal-pressure drying |
| CN105540598A (en) * | 2015-12-23 | 2016-05-04 | 成都新柯力化工科技有限公司 | Silica aerogel normal-pressure preparation method with expandable microcapsules |
| CN105502493B (en) * | 2015-12-23 | 2017-01-18 | 成都新柯力化工科技有限公司 | Method for preparing aerogel through magnetization and normal-pressure drying |
| CN106431168A (en) * | 2016-09-29 | 2017-02-22 | 成都新柯力化工科技有限公司 | Method for preparing bulk-shaped flexible aerogel through normal-pressure drying |
| CN108383468A (en) * | 2018-03-29 | 2018-08-10 | 重庆渝茁科技有限公司 | Composite incubation material for building |
| CN114602395A (en) * | 2022-02-24 | 2022-06-10 | 西安理工大学 | Organic aerogel sheet having surface wrinkles and method for preparing the same |
| CN114602395B (en) * | 2022-02-24 | 2022-11-08 | 西安理工大学 | Organic aerogel sheet having surface wrinkles and method for preparing the same |
| CN114804818A (en) * | 2022-05-24 | 2022-07-29 | 巩义市泛锐熠辉复合材料有限公司 | Low-cost aerogel composite material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015010651A1 (en) | 2015-01-29 |
| CN104086150B (en) | 2016-06-29 |
| CN103408279A (en) | 2013-11-27 |
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