CN201793378U - Microwave-reaction-prepared SiO2 nanometer porous material with aerogel characteristic - Google Patents
Microwave-reaction-prepared SiO2 nanometer porous material with aerogel characteristic Download PDFInfo
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- CN201793378U CN201793378U CN2009201933551U CN200920193355U CN201793378U CN 201793378 U CN201793378 U CN 201793378U CN 2009201933551 U CN2009201933551 U CN 2009201933551U CN 200920193355 U CN200920193355 U CN 200920193355U CN 201793378 U CN201793378 U CN 201793378U
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Abstract
The utility model relates to a microwave-reaction-prepared SiO2 nanometer porous material with aerogel characteristic and a preparation process thereof, and provides a microwave-reaction-prepared SiO2 nanometer porous material with aerogel characteristic, which consists of silicon dioxide frameworks (1) and vesicular nanometer holes (2), and the vesicular nanometer holes (2) are distributed among the silicon dioxide frameworks (1). The preparation process includes silicon dioxide sol preparation, wet gel preparation, mother liquor ageing and constant-pressure drying, wherein the silicon dioxide sol preparation adopts the following process: organo-siloxane, organic solvent, water and acid catalyst are adopted as raw materials and are mixed in a container according to specific proportion, and hydrolysis condensation polymerization is realized via microwave irradiation during mixing or mixture after being mixed in hydrolysis condensation polymerization via microwave irradiation. As microwave irradiation process is adopted, a large quantity of microscopic bubbles are prepared in the silicon dioxide sol, a large quantity of nanometer vesicular holes are formed on a silicon dioxide substrate, and simultaneously, silicon dioxide space frameworks are kept, so that the silicon dioxide porous material with huge specific surface area is obtained and further has higher strength. In addition, carbon dioxide supercritical drying process is not required, so that production cost is greatly reduced.
Description
Technical field
The utility model relates to a kind of preparation porous silica material and preparation technology thereof, belongs to the functional materials preparation field.
Background technology
SiO
2Aerogel is a kind of novel nano porous superinsulation material, has Powderedly and block, is the nano-meter porous amorphous attitude material of a kind of low density, and its typical structure has hole (with reference to figure 1) for the spheroidal particle by nanoscale is deposited in together between the particle.(1～100nm), solid-state network structure elements is of a size of 1～200nm, and typical bore hole size is 1～100nm, has great specific surface area (500～1200m because aerosil includes the particle of nanoscale and pore texture
2/ g), very high porosity (80%～99.8%), very low density (1～500kg/m
3) and very low thermal conductivity (0.02Wm
-1k
-1) etc. characteristics, all show unique character at aspects such as mechanics, acoustics, calorifics, optics, aspect heat preserving and insulating material, the optics, aspects such as electricity aspect, specific acoustic resistance coupling material, catalysis, pharmaceutical carrier, environment protection have been widely used.Simultaneously because aerosil is a particle packing by nano-grade size forms, so its intensity is very low, and is broken easily, thereby limited its purposes.
Prior art for preparing SiO
2The raw material that aerogel adopted mainly is following three kinds: silicon source, solvent, catalyzer.Above-mentioned silicon source is typically siliceous raw material water glass, methyl silicate, tetraethoxy, multi-polysiloxane, silicon sol etc., is mainly organo-siloxane or inorganic silicon raw material.Above-mentioned solvent mainly is alcohols, hydro carbons and ketone, comprises methyl alcohol, ethanol, isopropylcarbinol, acetone etc.; Above-mentioned catalyzer mainly is some mineral acids or alkali, as hydrofluoric acid, hydrochloric acid, ammoniacal liquor etc.Above raw material is prepared SiO by preparing gel, gel ageing, three processes of gel drying
2Aerogel.Preparation technology's flow process common in the prior art is referring to Fig. 3.
The silicon gel prepares by sol-gel method, and is general by the catalytic hydrolysis preparation to siliceous solution.Dispersion medium according to preparation can be divided into the water-sol, alcosol.The gel ageing is meant colloidal sol ageing for some time in mother liquor, to strengthen its network structure, so that the contraction in the drying process is minimized.Drying process will be removed the solvent in the colloidal sol nanoaperture structure, will ensure that simultaneously pore structure does not change, and therefore needs special drying process.
In the research in the past, main research emphasis is placed on the process of silicon gel drying, guarantee that the nanostructure and the nanoaperture that form in the gel are not destroyed in drying process, the solvent that nanoaperture contains in the wet gel need leave gel with suitable manner, avoids the phenomenon generation that the solvent surface tension is crossed the havoc nanoaperture in the capillary structure as far as possible.Drying process commonly used mainly comprises: supercritical drying, solvent replacing constant pressure and dry.(1) supercritical drying is divided into high temperature supercritical drying, low temperature supercritical drying.The high temperature supercritical drying is meant the supercritical fluid drying of alcogel solvent (for example ethanol).With the ethanol supercritical drying is example, Tc=241.15 ℃ of alcoholic acid supercritical state, Pc=6.38MPa.The low temperature supercritical drying relatively replaces the original solvent of gel near the fluid of room temperature with super critical point before referring to drying, carries out supercritical drying again.CO
2Supercritical drying is the most frequently used low temperature supercritical drying fluid, CO
2C=31.2 ℃ of supercritical state temperature T and Pc=7.38Mpa.Generally speaking, the temperature of carbonic acid gas need be controlled at 40 ℃, pressure 100bar keeps for some time, and solvent (as ethanol, acetone etc.) is replaced, and slowly is adjusted to normal temperature and pressure, finishes drying process.Be that any supercritical drying drying process all exists and needs highly compressed equipment, energy consumption is big, complex manufacturing, and the production time is long, the manufacturing cost costliness.(2) constant pressure and dry is mainly under the thermograde that slowly changes, desiccant gel under the atmospheric pressure state.But because contain a large amount of solvents and water in the gel, its surface tension is bigger, and evaporative process causes the subsiding of nanoaperture structure of aerogel inside easily.Therefore, the dry needs before reduces the gel cracking with the little solvent replacing of surface tension.But the solvent replacing process often needs 1 to time a few days, and the production cycle is long, and the organic solvent of used replacement usefulness has increased production cost or environment is caused certain pollution.Higher according to its cost of aerosil that above-mentioned prior art is made, usually up to thousands of dollars of per kilogram.The purpose of this utility model is intended to overcome the existing shortcoming that aerosil intensity is low, manufacturing cost is expensive, provide the technical feature of aerosil of a kind of technical feature and prior art for preparing suitable, and lower-cost silica nanometer level porous material and preparation method.
Summary of the invention
The utility model purpose is to overcome the prior art deficiency, and a kind of novel SiO with aerogel property is provided
2Nanoscale porous material and preparation method.This preparation method's core content is to have increased by one microwave treatment technology in the general preparation technology of aerosil, has obtained the novel silica nanometer level porous material that a kind of and existing aerosil has diverse micromechanism.This preparation technology's reaction conditions realizes that easily with short production cycle, cost is low, preparation technology is easy and simple to handle, and product property is stable, and microtexture is held survivable, and the specific surface area of gained silica nanometer level porous material is very big, and technical feature has met or exceeded existing SiO
2The technical feature of the resulting aerosil of aerogel production technique.
The realization the technical solution of the utility model is:
The SiO with aerogel property of prepared by microwave reaction
2Nanoscale porous material, described nanoscale porous material is made up of silicon dioxide skeleton and blister nano level hole, and blister nano level hole is distributed between the silicon dioxide skeleton.
Further, described blister nano level hole is meant bubble do not break the as yet mixture of the hole that forms of the hole that forms and/or bubble that breaks.
Described silicon dioxide skeleton is engraved the space three-dimensional tridimensional network that the back forms by blister nano level hole.
The SiO with aerogel property of the utility model prepared by microwave reaction
2The preparation technology of nanoscale porous material has comprised silicon dioxide gel preparation, wet gel preparation, mother liquor ageing, four steps of constant pressure and dry.Following technology has been adopted in described silicon dioxide gel preparation:
A. contain: organo-siloxane, organic solvent, water, the raw material of acid catalyst;
B. described raw material mixes in container by specified proportion;
C. blended is simultaneously through microwave exposure generation hydrolysis condensation reaction or mixed mixture process microwave exposure generation hydrolysis condensation reaction.
Further, described organo-siloxane is selected from: methyl silicate (Tetramethoxysilane), tetraethoxy (Tetraethoxysilane), Union carbide A-162 (Methyltriethoxysilane), methyltrimethoxy silane (Methyltrimethoxysilane), dimethyldiethoxysilane (Dimethyldiethoxysilane), aminopropyl triethoxysilane (Aminopropyltriethoxysilane), n-octyl triethoxyl silane (N-octyltriethoxysilane), polydimethylsiloxane (Polydimethylsiloxane) gathers diethoxy siloxanes (Polydiethoxysiloxane), polyethoxye silane (Polyethoxydisiloxane), perfluoroalkyl siloxanes (Perfluoroaklysilane) etc.
Described organic solvent is selected from: lower alcohol such as methyl alcohol, ethanol, propyl alcohol, butanols or normal heptane, pentane, hexane, octane, hexanaphthene, acetone, pimelinketone etc.
Described acid catalyst is selected from: hydrofluoric acid, nitric acid, sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid, citric acid, tartrate etc.
Further, described specified proportion is meant the mol ratio between component, wherein:
A. the ratio of organo-siloxane and water is between 1: 3～1: 20, and its optimum value is between 1: 4～1: 10;
B. organic solvent can make organo-siloxane and water dissolve each other, and the ratio of organo-siloxane and organic solvent is between 1: 1～1: 30, and its optimum value is between 1: 3～1: 10;
C. acid catalyst is used to regulate the pH value of mixture, and the pH value that makes mixture is 1～7, and the optimum value of its pH value is between 2～5.
The power of described microwave exposure is: the power of every ml mixture microwave exposure is between 0.1W～100W watt, be 1 second～1 hour its action time, its optimum value be the power of every ml mixture microwave exposure between 0.5W～3.5W, be 2min～30min its action time.
The invention also discloses a kind of preparation and have the hydrophobicity SiO of aerogel property
2The method of nanoscale porous material contains hydrophobic agents in the described raw material; Hydrophobic agents and organo-siloxane, organic solvent, water, acid catalyst are mixed together, blended is simultaneously through microwave exposure generation hydrolysis condensation reaction and hydrophobically modified reaction, or mixed mixture prepares the hydrophobicity wet gel through microwave exposure generation hydrolysis condensation reaction and hydrophobically modified reaction; Or the alcoholic solution that contains the hydrophobic agents of organic functional group soaks the wetting ability wet gel that has prepared.The wet gel of above-mentioned two kinds of methods preparation is through the mother liquor ageing, and constant pressure and dry is handled the hydrophobicity SiO with aerogel property of the prepared by microwave reaction that obtains the utility model
2Nanoscale porous material.
Further, described hydrophobic agents is the hydrophobic agents that contains organic functional group.
The described hydrophobic agents that contains organic functional group is RnSiX
4-n type (n=1-3, R=CH
3, C
2H
5Or phenyl etc., X=OCH
3, OC
2H
5, or Cl etc.) silicoorganic compound, can be used as multipolymer or the properties-correcting agent of deriving.Can be silane coupling agents such as organochlorosilanes such as trimethylchlorosilane, dimethyldichlorosilane(DMCS) or hexamethyldisilazane (HMDZ), hexamethyldisiloxane (HMDSO), octamethylcyclotetrasiloxane, vinyltriethoxysilane.
The utility model provides a kind of SiO with aerogel property of prepared by microwave reaction
2Nanoscale porous material and preparation method thereof, owing to adopted microwave exposure technology, a large amount of microbubbles have been made, on the matrix of silicon-dioxide, formed a large amount of nano level blister holes, simultaneously owing to kept the silicon-dioxide spatial skeleton, thereby not only obtained the porous silica material of great specific surface area, and higher intensity is arranged.In addition, because of need not the CO 2 supercritical drying process, so lowered production cost significantly.
This preparation method's characteristics are that the microwave hydrolysis polyreaction generates aerosil.The microwave hydrolysis polyreaction is compared with the traditional heating polymerization methods, microwave heating is a kind of intramolecularly type of heating of uniqueness, be after polar molecule is accepted microwave radiation energy, produce internal heat effect by the molecular dipole high speed rotating, and there is an influence of some specific non-thermal effect, promoted the polymerization of silica chemistry of silicones key effectively, microwave has caused colloid inside to produce a large amount of nano grade air bubbles simultaneously, in follow-up ageing and constant pressure and dry process, a large amount of nano grade air bubbles breaks and keeps, assemble, formed unique nano level blister hole, and engrave by nano level blister hole and to have formed silicon dioxide skeleton, finally formed unique microstructure that nano level blister hole combines with silicon dioxide skeleton.The SiO with aerogel property of the prepared by microwave reaction of the utility model
2Nanoscale porous material can be widely used as sound-proof material, lagging material; And the additive of macromolecular material such as plastics, resin, be used to improve heat insulation, the soundproof effect of macromolecular materials such as plastics, resin; The additive that also can be used for simultaneously material of construction such as cement is used to improve heat insulation, the sound-proofing properties of material of construction such as cement, can also be combined into the various coating heat insulation, sound-proofing properties that are intended to improve with various binding agents; At aspects such as aerospace, daily life, industry, agriculturals extensive use is arranged.
Description of drawings
The SiO that Fig. 1 prior art is made
2The microstructure synoptic diagram of aerogel.
The SiO with aerogel property of the prepared by microwave reaction of Fig. 2 the utility model
2The microstructure synoptic diagram of nanoscale porous material.
The SiO with aerogel property of the prepared by microwave reaction of Fig. 3 the utility model
2The process flow sheet of nanoscale porous material.
Among the above-mentioned figure, 1 is silicon dioxide skeleton, and 2 is blister nano level hole; 10 is the spherical SiO of nanoscale
2Particle, 11 is spherical SiO
2Hole is arranged between the particle.
Embodiment
Embodiment 1: silicon dioxide gel is carried out microwave exposure handle the SiO with aerogel property that makes
2Nanoscale porous material
According to the technical scheme of the utility model, with organo-siloxane, organic solvent, water, acid catalyst are the SiO that the microwave reaction type of raw material manufacturing the utility model has aerogel property
2Nanoscale porous material.Wherein:
Organo-siloxane is selected from: methyl silicate (Tetramethoxysilane), tetraethoxy (Tetraethoxysilane), Union carbide A-162 (Methyltriethoxysilane), methyltrimethoxy silane (Methyltrimethoxysilane), dimethyldiethoxysilane (Dimethyldiethoxysilane), aminopropyl triethoxysilane (Aminopropyltriethoxysilane), n-octyl triethoxyl silane (N-octyltriethoxysilane), polydimethylsiloxane (Polydimethylsiloxane) gathers diethoxy siloxanes (Polydiethoxysiloxane), polyethoxye silane (Polyethoxydisiloxane), perfluoroalkyl siloxanes (Perfluoroaklysilane) etc.
Organic solvent is selected from: lower alcohol such as methyl alcohol, ethanol, propyl alcohol, butanols or normal heptane, pentane, hexane, octane, hexanaphthene, acetone, pimelinketone etc.
Acid catalyst is selected from: hydrofluoric acid, nitric acid, sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid, citric acid, tartrate etc.
In addition, organo-siloxane, organic solvent, water, the mol ratio between 4 components of acid catalyst meets following rule, wherein:
The ratio of A, organo-siloxane and water is between 1: 3～1: 20, and its optimum value is between 1: 4～1: 10;
B, organic solvent can make organo-siloxane and water dissolve each other, and the ratio of organo-siloxane and organic solvent is between 1: 1～1: 30, and its optimum value is between 1: 3～1: 10;
C, acid catalyst are used to regulate the pH value of mixture, and the pH value that makes mixture is 1～7, and the optimum value of its pH value is between 2～5.
Particularly, in the present embodiment, organo-siloxane is selected from tetraethoxy (Tetraethoxysilane), and organic solvent is selected ethanol for use, and acid catalyst is selected hydrochloric acid for use, wet concentration distilled water.Mol ratio between each component is:
Organo-siloxane: organic solvent: water=1: 3: 6
, stir, mix tetraethoxy, ethanol, water proportioning according to above-mentioned mol ratio, and add appropriate hydrochloric acid and make the pH value of mixed solution adjust to pH value=4, promptly obtain silicon dioxide gel.
The silicon dioxide gel that obtains is placed in the microwave reactor reacts.The power of microwave exposure is according to following rule: the power of every ml mixture microwave exposure is between 0.1W～100W watt, be 1 second～1 hour its action time, its optimum value be the power of every ml mixture microwave exposure between 0.5W～3.5W, be 2min～30min its action time.Specific to present embodiment, the microwave heating temperature of reaction is controlled at 50 ℃～53 ℃, microwave heating reaction times 20min.During the mixed solution of irradiation 150ml, the power setting of microwave reactor is at 300W.
After microwave exposure finishes, pour product into beaker, add ammoniacal liquor (alkaline catalysts) and make silica wet gel, with dehydrated alcohol ageing 24 hours, constant pressure and dry makes the transparent cake solid, has promptly obtained the SiO with aerogel property of the prepared by microwave reaction of the utility model
2Nanoscale porous material.
Through detecting the SiO with aerogel property of the prepared by microwave reaction of the utility model that present embodiment obtains
2The specific surface area of nanoscale porous material is 1092m
2/ g, pore size distribution is at 2.0～20nm.Its microstructure is rendered as the SiO with aerogel property of the prepared by microwave reaction of the utility model under electron microscope
2The unique microstructure of nanoscale porous material promptly is made up of silicon dioxide skeleton (1) and blister nano level hole (2), and blister nano level hole (2) is distributed between the silicon dioxide skeleton (1).A large amount of blister nano level holes (2) be the continuous explosion of the ultrafine bubble that forms of the interior thermal response because of microwave form unique pattern---it is silicon dioxide skeleton (1) that nano level blister hole (2) is engraved silica substrate, finally formed unique 3 D stereo porous microstructure that nano level blister hole (2) combines with silicon dioxide skeleton (1).With reference to figure 2.
The SiO with aerogel property of the prepared by microwave reaction of the utility model
2Nanoscale porous material, sound insulation, good heat-insulation effect, cost is cheap, can be widely used as sound-proof material, lagging material; And the additive of macromolecular material such as plastics, resin, be used to improve heat insulation, the sound-proofing properties of macromolecular materials such as plastics, resin; Also can be used for simultaneously brick, watt, the additive of material of construction such as plasterboard, cement, be used to improve heat insulation, the sound-proofing properties of material of construction such as cement, can also be combined into the various coating heat insulation, sound-proofing properties that are intended to improve with various binding agents; At aspects such as aerospace, daily life, industry, agriculturals extensive use is arranged.
Embodiment 2: to the SiO with aerogel property that mixes and microwave exposure reflection synchronously makes
2Nanoscale porous material
Present embodiment is substantially the same manner as Example 1, and its difference is: organo-siloxane, organic solvent, water, these 4 components of acid catalyst stir in microwave reactor on one side, mix, and carry out microwave exposure simultaneously, directly obtain the silicon dioxide gel through microwave exposure after the reaction.Add alkaline catalysts, obtain silica wet gel.Used the dehydrated alcohol ageing again 24 hours, constant pressure and dry makes the transparent cake solid, has promptly obtained the SiO with aerogel property of the prepared by microwave reaction of the utility model
2Nanoscale porous material.
Particularly, with tetraethoxy, ethanol, water, good according to 1: 4: 4 mol ratio proportioning, adding appropriate hydrochloric acid makes the pH value of mixed solution adjust to pH value=4.6, mixed solution is placed in the microwave reactor, stir, mix on one side, carry out microwave exposure on one side.The microwave heating temperature of reaction is controlled at 60 ℃ ± 1 ℃, microwave heating reaction times 10min.During the mixed solution of irradiation 150ml, the power setting of microwave reactor is at 300W.
After microwave exposure finishes, pour product into beaker, add alkaline catalysts (selecting ammoniacal liquor for use) and make silica wet gel, with dehydrated alcohol ageing 24 hours, constant pressure and dry makes the transparent cake solid, has promptly obtained the SiO with aerogel property of the prepared by microwave reaction of the utility model
2Nanoscale porous material.
Through detecting the SiO with aerogel property of the prepared by microwave reaction of the utility model that present embodiment obtains
2The specific surface area of nanoscale porous material is 1083m
2/ g, pore size distribution is at 1.5～25nm.Its microstructure is rendered as the SiO with aerogel property of the prepared by microwave reaction of the utility model under electron microscope
2The unique microstructure of nanoscale porous material promptly is made up of silicon dioxide skeleton (1) and blister nano level hole (2), and blister nano level hole (2) is distributed between the silicon dioxide skeleton (1).With reference to figure 2.
Embodiment 3: the influence of microwave exposure technology contrast table area
The technical scheme of present embodiment is substantially the same manner as Example 1, only is in microwave exposure processing parameter difference.Its main raw material(s), organo-siloxane are selected tetraethoxy (Tetraethoxysilane) for use, and organic solvent is selected ethanol for use, and acid catalyst is selected sulfuric acid for use, wet concentration distilled water.The specified proportion " organo-siloxane: organic solvent: water " of the component of batching sees table 1 for details, adds an amount of sulfuric acid and makes the pH value of mixed solution adjust to pH value=5.The cumulative volume of mixed solution is 150ml, and the power setting of microwave reactor is at 300W.Experimental result sees Table 1.This experimental result shows, different microwave exposure technology has obtained the SiO2 nanoscale porous material with aerogel property of prepared by microwave reaction of the utility model of different specific surface areas, and according to the difference of microwave exposure technology, its specific surface area is at 778.36m
2/ g to 1025.27m
2Between/the g, differ 246.91m between maximum value and the minimum value
2/ g, maximum value exceeds 31.72% than minimum value.
Can seem thus, microwave exposure technology is for the SiO with aerogel property of the utility model
2The formation of the blister nano level hole (2) in the nanoscale porous material, distribution, pattern etc. have great shadow to, thereby also influenced the space structure of silicon dioxide skeleton (1); The sound-proofing properties of remote effect material, heat-proof quality and the strength of materials.Certainly, influence the SiO with aerogel property of the utility model
2The specific surface area of nanoscale porous material also comprise raw-material proportioning ratio, the pH value of mixed solution, aftertreatment technology etc., but microwave exposure technology is one of key factor.
Table 1: microwave exposure technology contrast table area
Embodiment 4: the SiO with aerogel property of the hydrophobicity prepared by microwave reaction of the utility model
2The preparation of nanoscale porous material
The basic skills of present embodiment is with embodiment 1, difference is to pour the silica dioxide gel behind the microwave exposure into beaker, add ammoniacal liquor (selecting for use) and make silica wet gel as alkaline catalysts, with dehydrated alcohol ageing 24 hours, the properties-correcting agent (as the hydrophobic agents that contains organic functional group) that adds trimethylchlorosilane, hexanaphthene and dehydrated alcohol preparation again, hydrophobically modified 24h, constant pressure and dry make the SiO with aerogel property of the hydrophobicity prepared by microwave reaction of transparent cake the utility model
2Nanoscale porous material, it reaches specific surface area 967m
2/ g, aperture 1.0～15nm.
Make the SiO with aerogel property of the hydrophobicity prepared by microwave reaction of the utility model
2Another preparation method of nanoscale porous material is: will be added on raw material organo-siloxane, organic solvent, water as the trimethylchlorosilane of the hydrophobic agents that contains organic functional group, in the mother liquor of acid catalyst, mix, carry out the microwave exposure reaction then, make silica dioxide gel.Pour the silica dioxide gel behind the microwave exposure into beaker, add ammoniacal liquor (selecting for use) and make silica wet gel as alkaline catalysts, with dehydrated alcohol ageing 24 hours, constant pressure and dry made the SiO with aerogel property of the hydrophobicity prepared by microwave reaction of transparent cake the utility model
2Nanoscale porous material, it reaches specific surface area 850～1200m
2/ g, aperture 1.0～30nm.
In addition, the hydrophobic agents that contains organic functional group is RnSiX
4-n type (n=1-3, R=CH
3, C
2H
5Or phenyl etc., X=OCH
3, OC
2H
5, or Cl etc.) silicoorganic compound, can be used as multipolymer or the properties-correcting agent of deriving.Can be silane coupling agents such as organochlorosilanes such as trimethylchlorosilane, dimethyldichlorosilane(DMCS) or hexamethyldisilazane (HMDZ), hexamethyldisiloxane (HMDSO), octamethylcyclotetrasiloxane, vinyltriethoxysilane.
Should be noted that herein openly can replace with the identical structure of other effect that the embodiment that while the utility model is introduced realizes unique structure of the present utility model with the structure of explanation.Though preferential embodiment of the present utility model is introduced in this article and is illustrated; but those skilled in the art know and know that these embodiment illustrate; those skilled in the art can make countless variations, improvement and replacement; and can not break away from the utility model; therefore, should be according to the next qualification protection domain of the present utility model of the spirit and scope of the utility model appending claims.
Claims (3)
1. the SiO with aerogel property of prepared by microwave reaction
2Nanoscale porous material is characterized in that described nanoscale porous material is made up of silicon dioxide skeleton (1) and blister nano level hole (2), and blister nano level hole (2) is distributed between the silicon dioxide skeleton (1).
2. according to the SiO with aerogel property of the described prepared by microwave reaction of claim 1
2Nanoscale porous material is characterized in that described blister nano level hole (2) is meant bubble do not break the as yet mixture of the hole that forms of the hole that forms and/or bubble that breaks.
3. according to the SiO with aerogel property of the described prepared by microwave reaction of claim 1
2Nanoscale porous material is characterized in that the space three-dimensional tridimensional network that forms after described silicon dioxide skeleton (1) is engraved by blister nano level hole (2).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303930A (en) * | 2013-06-26 | 2013-09-18 | 陕西盟创纳米新型材料股份有限公司 | Aerogel paperboard and preparation method thereof |
| WO2015132418A1 (en) | 2014-03-07 | 2015-09-11 | Enersens | Process for producing aerogels by dielectric heating |
| CN108172785A (en) * | 2017-12-22 | 2018-06-15 | 东莞东阳光科研发有限公司 | A kind of carbon/silicon/carbon composite and its preparation method and application |
-
2009
- 2009-08-25 CN CN2009201933551U patent/CN201793378U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303930A (en) * | 2013-06-26 | 2013-09-18 | 陕西盟创纳米新型材料股份有限公司 | Aerogel paperboard and preparation method thereof |
| CN103303930B (en) * | 2013-06-26 | 2015-02-18 | 陕西盟创纳米新型材料股份有限公司 | Aerogel paperboard and preparation method thereof |
| WO2015132418A1 (en) | 2014-03-07 | 2015-09-11 | Enersens | Process for producing aerogels by dielectric heating |
| US10058836B2 (en) | 2014-03-07 | 2018-08-28 | Enersens | Process for producing aerogels by dielectric heating |
| CN108172785A (en) * | 2017-12-22 | 2018-06-15 | 东莞东阳光科研发有限公司 | A kind of carbon/silicon/carbon composite and its preparation method and application |
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