CN107043224A - Foam glass-SiO2Method for producing aerogels - Google Patents
Foam glass-SiO2Method for producing aerogels Download PDFInfo
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- CN107043224A CN107043224A CN201710197888.6A CN201710197888A CN107043224A CN 107043224 A CN107043224 A CN 107043224A CN 201710197888 A CN201710197888 A CN 201710197888A CN 107043224 A CN107043224 A CN 107043224A
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- foam glass
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- sio
- ethanol
- aerogel
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- 239000004964 aerogel Substances 0.000 title claims abstract description 20
- 239000006260 foam Substances 0.000 title claims abstract description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 95
- 239000011494 foam glass Substances 0.000 claims abstract description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 27
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 26
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 26
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 26
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 26
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 26
- 238000002360 preparation method Methods 0.000 claims abstract description 19
- 230000006835 compression Effects 0.000 claims abstract description 11
- 238000007906 compression Methods 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 10
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000005470 impregnation Methods 0.000 claims abstract description 6
- 235000019441 ethanol Nutrition 0.000 claims description 24
- 239000000499 gel Substances 0.000 claims description 18
- 230000032683 aging Effects 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 13
- 238000000352 supercritical drying Methods 0.000 claims description 10
- 238000001291 vacuum drying Methods 0.000 claims description 9
- 239000002904 solvent Substances 0.000 claims description 8
- 239000012445 acidic reagent Substances 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 239000011240 wet gel Substances 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000004108 freeze drying Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims 1
- 239000011159 matrix material Substances 0.000 abstract description 22
- 238000009413 insulation Methods 0.000 abstract description 6
- 150000001875 compounds Chemical class 0.000 abstract description 4
- 239000012774 insulation material Substances 0.000 abstract description 4
- 239000000919 ceramic Substances 0.000 abstract description 2
- 239000002243 precursor Substances 0.000 abstract 3
- 238000005903 acid hydrolysis reaction Methods 0.000 abstract 1
- 238000013329 compounding Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 238000001879 gelation Methods 0.000 abstract 1
- 238000011031 large-scale manufacturing process Methods 0.000 abstract 1
- 238000002791 soaking Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 5
- 239000011810 insulating material Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 206010000269 abscess Diseases 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000013335 mesoporous material Substances 0.000 description 1
- 239000007783 nanoporous material Substances 0.000 description 1
- 239000004763 nomex Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
- C03C23/0095—Solution impregnating; Solution doping; Molecular stuffing, e.g. of porous glass
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Silicon Compounds (AREA)
- Glass Compositions (AREA)
Abstract
The invention relates to foam glass-SiO2A preparation method of aerogel. The invention uses the vacuum impregnation process to fully compound the aerogel and the hard porous foam glass, thereby not only overcoming the defects of no strength and no bearing of aerogel materials, but also further improving the heat insulation performance of the foam glass materials, and being used as high-performance external wall heat insulation materials and kiln heat insulation structures. The foam glass-SiO prepared2The density of the aerogel thermal insulation material is 0.23-0.52 g/cm2The compression strength is 0.6-1.2 MPa, and the normal-temperature thermal conductivity is 0.042-0.068 W.m‑1·K‑1In the meantime. The preparation method comprises the steps of taking alkaline silica sol as a precursor, compounding the precursor with a foam ceramic matrix by using a vacuum impregnation method after acidic hydrolysis, soaking the precursor in ethanol for several days after gelation, and finally drying. The preparation method has the advantages of simple and cheap materials, simple process and easy large-scale production.
Description
Technical field
The invention belongs to the preparation technology field of nano-porous materials, and in particular to a kind of high temperature resistant, the bubble of lower thermal conductivity
Foam glass-SiO2The preparation method of aeroge.
Background technology
SiO2Aeroge is a kind of solid material with three-D nano-porous network structure, and the material has high-ratio surface
The characteristics of product, high porosity, low-density and lower thermal conductivity, it is widely used in heat-insulation and heat-preservation field.Because its fragility is larger, by force
Spend it is low, it is general to carry out compound fiber reinforced flexible SiO being made with it using Nomex2Aeroge, but the flexible SiO2Aeroge
Felt does not possess resistance to compression and flexural capacity, it is impossible in certain special cases as the direct load-bearing of structural material.Foam glass is logical
Solid waste material is made by high temperature foaming, has porosity height, density low and the low feature of thermal conductivity, and with certain anti-
Compressive Strength, can be used as the insulation material and materials for wall of building and industrial equipment.
The content of the invention
A kind of foam glass-SiO is provided the invention aims to improve the deficiencies in the prior art2The system of aeroge
Preparation Method.
The technical scheme is that：Using foam glass as matrix, with reference to vacuum impregnation technique, foam glass is prepared
Glass composite S iO2Aerogel heat-insulating material.SiO2Aeroge is sufficient filling with its hole, effectively improves the heat-insulated effect of matrix material
Really, while making aeroge possess resistance to compression folding ability, it can be used in some specific structures and make load-bearing material.The material can carry out machinery
Processing, various shaped pieces are processed to adapt to different use environment requirements.
The present invention concrete technical scheme be：A kind of foam glass-SiO2The preparation method of aeroge, its specific steps is such as
Under：
(1) preparation of colloidal sol
Alkaline silica sol, absolute ethyl alcohol are mixed and added into container in proportion, stirred after adding acid reagent regulation pH value
Certain time, stir to form SiO2Colloidal sol；
(2) vacuum impregnation technology composite foam glass
Rigid foam glass material is placed in mould or container, by obtained SiO in step (1)2Colloidal sol is poured into
In container, not have matrix material to be defined, container is put into vacuum drying chamber, regulation is waited to coagulate to steady temperature after vacuumizing
Glue；
(3) aging of gel
After after sample gel in step (2), its immersion in ethanol, is entered after the external wet gel of foam glass-based is peeled off
Row aging and solvent replacement process；
(4) drying process
Foam glass after step (3) aging is combined wet gel processing is dried, so as to obtain light foam glass
Glass-SiO2Aerogel material.
The pH value of alkaline silica sol used in preferred steps (1) is 8~10, and quality solid content is 28%~33%.
Acid reagent described in preferred steps (1) is HCl, HNO3Or H2SO4Ethanol solution in one kind；Acidity examination
The concentration of agent is between 1mol/L~5mol/L.
Ludox and absolute ethyl alcohol volume ratio are 1 in preferred steps (1):(0.5~2)；PH is adjusted after adding acid reagent
To 6~7,0.5~1h of mixing time.
The rigid foam glass material porosity used in preferred steps (2) is between 50%~85%, and density exists
0.20~0.46g/cm3Between.
Vacuum drying chamber temperature setting described in preferred steps (2) is 20 DEG C~50 DEG C；Vacuum is set to as 10~
30KPa。
Soak time is 48~72 hours in preferred steps (3)；Solvent is replaced into changes an ethanol every 10~12h.
Drying means described in preferred steps (4) is conventional constant pressure and dry, freeze-drying, CO2Supercritical drying or
One kind in ethanol supercritical drying.
Above-mentioned constant pressure and dry, need to carry out immersion treatment, so by the wet gel after aging in the ethanol solution of n-hexane
Spontaneously dry 24h or so at normal temperatures afterwards, dried in 50 DEG C~60 DEG C baking ovens.
Above-mentioned freeze-drying need to use liquid nitrogen that wet gel is carried out into quenching, then be less than 100Pa's in vacuum
Dried in freeze drier.
Above-mentioned supercritical drying mode is CO2Or one kind in ethanol supercritical drying；Wherein ethanol supercritical drying
Drying temperature be 260~280 DEG C, pressure be 8~12MPa, 2~3h of extraction time；CO2The drying temperature of supercritical drying is
40~50 DEG C, pressure is 10~12MPa, 8~16h of extraction time.
Foam glass-SiO obtained by the present invention2The density of aerogel material is 0.23~0.52g/cm3, compression strength
0.60~1.20MPa, normal temperature thermal conductivity factor is in 0.042~0.086Wm-1·K-1Between.
Beneficial effect：
(1) it is compared to traditional fiber needled felt composite S iO2Aeroge sample, the foam glass that the present invention is prepared
Glass composite aerogel sample excellent in mechanical performance, there is certain compression strength, available for the direct load-bearing of structural material.
(2) it is compared to foam cement, the hard insulating material such as calcium silicate board with microporous, foam glass/SiO prepared by the present invention2
Aerogel material has more preferable heat-proof quality, and thermal conductivity is lower.
(3) vacuum impregnation technique is used, aeroge is sufficient filling with the pore structure of foamed ceramics, further improves material
Expect effect of heat insulation, called for building with kiln field of thermal insulation, response energy-saving and emission-reduction.
Brief description of the drawings
Fig. 1 is prepared foam glass-SiO in example 12The photo in kind and section cutaway view of aerogel heat-insulating material
Piece；Wherein a is photo in kind, and b is that section splits picture；
Fig. 2 is prepared foam glass-SiO in example 22The high resolution scanning Electronic Speculum of aerogel heat-insulating material is shone
Piece；
Fig. 3 is prepared sample SiO in example 32The BET pore-size distribution figure lines of aerogel component.
Embodiment
With reference to example, the invention will be further described, but protection domain is not limited to this.
Example 1
It is 8 that pH value is added in beaker, and solid content is 31.5% alkaline silica sol 158ml, absolute ethyl alcohol 80ml, stirring
2mol/LH is added under state2SO4Ethanol solution adjust to pH be 6, continue stir 1h after form SiO2Colloidal sol is stand-by.By gas
Porosity 85%, density are 0.21g/cm3Foam glass matrix be put into mould container, and pour into what is just prepared thereto
SiO2Colloidal sol, not have matrix material to be defined.Container is put into vacuum drying chamber, 40 DEG C is adjusted the temperature to, is evacuated down to
20KPa.After treating sample gel, by SiO unnecessary outside matrix2Gel soaks in ethanol after peeling off, and carries out aging and solvent
Replacement process, soak time 48h, wherein changing an ethanol Ageing solution per 10h.Plural gel is put into reactor and carries out ethanol
Supercritical drying, drying temperature is set to 260 DEG C, after temperature is gone up, and pressure maintains state under 12MPa, constant temperature and pressure
Lower maintenance 3h, then remains a constant speed in 30min and to release gas, waits temperature of reaction kettle to take out container after falling, is steeped
Foam glass/SiO2Aerogel heat-insulating material.Prepared density of material is 0.23g/cm3, compression strength is 0.62MPa, normal temperature heat
Conductance is 0.042Wm-1·K-1。
Fig. 1 is foam glass-SiO2Aerogel material pictorial diagram and section amplification figure, are clearly visible SiO2Aeroge with
Foam glass matrix is fully combined, and is uniformly filled in the foaming pore structure of matrix, for material convection heat transfer' heat-transfer by convection play compared with
Good iris action.
Example 2
It is 10 that pH value is added in beaker, and solid content is 28% alkaline silica sol 63ml, absolute ethyl alcohol 125ml, stirring
1mol/LHNO is added under state3Ethanol solution adjust to pH be 7, continue stir 0.5h after form SiO2Colloidal sol is stand-by.Will
The porosity 50%, density are 0.46g/cm3Foam glass matrix be put into mould container, and pour into what is just prepared thereto
SiO2Colloidal sol, not have matrix material to be defined.Container is put into vacuum drying chamber, 20 DEG C is adjusted the temperature to, is evacuated down to
10KPa.After treating sample gel, by SiO unnecessary outside matrix2Gel soaks in ethanol after peeling off, and carries out aging and solvent
Replacement process, soak time 60h, wherein changing an ethanol Ageing solution per 12h.Plural gel is put into reactor and carries out CO2
Supercritical drying, drying temperature is set to constant pressure 10MPa under 40 DEG C, certain outgassing rate and maintains 8h, closes air inlet and will react
In kettle after pressure release, foam glass/SiO is obtained2Aeroge.Prepared density of material is 0.52g/cm3, compression strength is
1.20MPa, normal temperature thermal conductivity is 0.086Wm-1·K-1。
Fig. 2 is prepared foam glass-SiO2The high resolution scanning electromicroscopic photograph of aerogel composite, it can be seen that
SiO2Aeroge is uniform porous material, sticks agglomeration in the absence of bulky grain.
Example 3
It is 9 that pH value is added in beaker, and solid content is 33% alkaline silica sol 76ml, absolute ethyl alcohol 100ml, stirs shape
It is 7 that addition 4mol/LHCl ethanol solution, which is adjusted to pH, under state, continues to form SiO after stirring 1h2Colloidal sol is stand-by.By stomata
Rate 76%, density are 0.30g/cm3Foam glass matrix be put into mould container, and pour into the SiO just prepared thereto2
Colloidal sol, not have matrix material to be defined.Container is put into vacuum drying chamber, 50 DEG C is adjusted the temperature to, is evacuated down to 30KPa.
After treating sample gel, by SiO unnecessary outside matrix2Gel soaks in ethanol after peeling off, and carries out aging and solvent is transposed
Journey, soak time 72h, wherein changing an ethanol Ageing solution per 11h.Plural gel is put into reactor and carries out Ethanol supercritical
Dry, drying temperature is set to 280 DEG C, after temperature is gone up, and pressure is maintained and maintained under 10MPa, constant temperature and pressure under state
2h, then remains a constant speed in 30min and to release gas, waits temperature of reaction kettle to take out container after falling, obtain foam glass/
SiO2Aeroge.Prepared density of material is 0.38g/cm3, compression strength is 0.89MPa, and normal temperature thermal conductivity is 0.053W
m-1·K-1。
Fig. 3 is SiO in prepared material2The BET pore-size distribution figure lines of aerogel component, sample aperture is distributed in 1-80nm
In the range of, it is concentrated mainly within 10nm, belongs to typical mesoporous material.Aerogel component is sufficient filling with the hair in matrix material
In abscess, limit heat motion of gas molecules to improve the effect of heat insulation of composite by its nano-pore.
Example 4
It is 8 that pH value is added in beaker, and solid content is 29% alkaline silica sol 110ml, absolute ethyl alcohol 76ml, stirs shape
5mol/LHNO is added under state3Ethanol solution adjust to pH be 7, continue stir 1h after form SiO2Colloidal sol is stand-by.By stomata
Rate 62%, density are 0.38g/cm3Foam glass matrix be put into mould container, and pour into the SiO just prepared thereto2
Colloidal sol, not have matrix material to be defined.Container is put into vacuum drying chamber, 30 DEG C is adjusted the temperature to, is evacuated down to 15KPa.
After treating sample gel, by SiO unnecessary outside matrix2Gel soaks in ethanol after peeling off, and carries out aging and solvent is transposed
Journey, soak time 48h, wherein changing an ethanol Ageing solution per 12h.Compound wet gel is subjected to quenching using liquid nitrogen, so
24h is dried in 50Pa freeze drier afterwards, foam glass/SiO is obtained2Aeroge.Prepared density of material is
0.43g/cm3, compression strength is 1.04MPa, and normal temperature thermal conductivity is 0.069Wm-1·K-1。
Example 5
It is 8 that pH value is added in beaker, and solid content is 30% alkaline silica sol 80ml, absolute ethyl alcohol 80ml, stirs shape
3mol/LH is added under state2SO4Ethanol solution adjust to pH be 6, continue stir 0.5h after form SiO2Colloidal sol is stand-by.By gas
Porosity 80%, density are 0.24g/cm3Foam glass matrix be put into mould container, and pour into what is just prepared thereto
SiO2Colloidal sol, not have matrix material to be defined.Container is put into vacuum drying chamber, 20 DEG C is adjusted the temperature to, is evacuated down to
10KPa.After treating sample gel, by SiO unnecessary outside matrix2Gel soaks in ethanol after peeling off, and carries out aging and solvent
Replacement process, soak time 72h, wherein changing an ethanol Ageing solution per 12h.By compound wet gel in the mixed of n-hexane and ethanol
Close in solution and soak 48 hours, spontaneously dry 24h after being washed using ethanol at normal temperatures, 12h is finally dried in 60 DEG C of baking ovens,
Obtain foam glass/SiO2Aeroge.Prepared density of material is 0.32g/cm3, compression strength is 0.70MPa, normal temperature thermal conductivity
Rate is 0.052Wm-1·K-1。
Claims (9)
1. a kind of foam glass-SiO2The preparation method of aeroge, it is comprised the following steps that：
(1) preparation of colloidal sol
Alkaline silica sol, absolute ethyl alcohol are mixed and added into container in proportion, stir certain after adding acid reagent regulation pH value
Time, stir to form SiO2Colloidal sol；
(2) vacuum impregnation technology composite foam glass
Rigid foam glass material is placed in mould or container, by obtained SiO in step (1)2Colloidal sol pours into container
In, container is put into vacuum drying chamber, regulation treats gel to steady temperature after vacuumizing；
(3) aging of gel
After after sample gel in step (2), being soaked in ethanol, aging and solvent replacement process are carried out；
(4) drying process
By after step (3) aging foam glass be combined wet gel processing is dried so that obtain light foam glass-
SiO2Aerogel material.
2. preparation method according to claim 1, it is characterised in that the pH value of the alkaline silica sol used in step (1)
For 8~10, quality solid content is 28%~33%.
3. preparation method according to claim 1, it is characterised in that the acid reagent described in step (1) is HCl, HNO3
Or H2SO4Ethanol solution in one kind；The concentration of acid reagent is between 1mol/L~5mol/L.
4. preparation method according to claim 1, it is characterised in that Ludox is with absolute ethyl alcohol volume ratio in step (1)
1:(0.5~2)；Add and pH to 6~7,0.5~1h of mixing time are adjusted after acid reagent.
5. preparation method according to claim 1, it is characterised in that the rigid foam glass material used in step (2)
The porosity is between 50%~85%, and density is in 0.20~0.46g/cm3Between.
6. preparation method according to claim 1, it is characterised in that the vacuum drying chamber temperature setting described in step (2)
For 20 DEG C~50 DEG C；Vacuum is set to as 10~30KPa.
7. preparation method according to claim 1, it is characterised in that soak time is 48~72 hours in step (3)；It is molten
Agent is replaced into changes an ethanol every 10~12h.
8. preparation method according to claim 1, it is characterised in that the drying means described in step (4) is dry for normal pressure
Dry, freeze-drying, CO2One kind in supercritical drying and ethanol supercritical drying.
9. preparation method according to claim 1, it is characterised in that obtained foam glass-SiO2Aerogel material
Density is 0.23~0.52g/cm3, 0.60~1.20MPa of compression strength, normal temperature thermal conductivity factor is in 0.042~0.086Wm-1·
K-1Between.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710197888.6A CN107043224A (en) | 2017-03-29 | 2017-03-29 | Foam glass-SiO2Method for producing aerogels |
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|---|---|---|---|
| CN201710197888.6A CN107043224A (en) | 2017-03-29 | 2017-03-29 | Foam glass-SiO2Method for producing aerogels |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107746290A (en) * | 2017-10-31 | 2018-03-02 | 南京工业大学 | Foamed cement reinforced SiO2‑TiO2Preparation method of composite aerogel material |
| CN108892423A (en) * | 2018-07-17 | 2018-11-27 | 哈尔滨工业大学 | A kind of inorganic aerogels fill the preparation method of the composite heat-insulated material of orderly porous aluminum oxide template |
| CN111517747A (en) * | 2020-04-21 | 2020-08-11 | 浙江岩谷科技有限公司 | Preparation method of pre-oxidized fiber felt-silica aerogel heat-insulation composite material |
| CN112551506A (en) * | 2020-12-24 | 2021-03-26 | 中国建筑材料科学研究总院有限公司 | Antioxidant carbon aerogel composite material and preparation method and application thereof |
| CN113003947A (en) * | 2021-03-24 | 2021-06-22 | 南京工业大学 | Preparation method of silicon-based aerogel-foam material heat insulation composite material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107746290A (en) * | 2017-10-31 | 2018-03-02 | 南京工业大学 | Foamed cement reinforced SiO2‑TiO2Preparation method of composite aerogel material |
| CN108892423A (en) * | 2018-07-17 | 2018-11-27 | 哈尔滨工业大学 | A kind of inorganic aerogels fill the preparation method of the composite heat-insulated material of orderly porous aluminum oxide template |
| CN111517747A (en) * | 2020-04-21 | 2020-08-11 | 浙江岩谷科技有限公司 | Preparation method of pre-oxidized fiber felt-silica aerogel heat-insulation composite material |
| CN112551506A (en) * | 2020-12-24 | 2021-03-26 | 中国建筑材料科学研究总院有限公司 | Antioxidant carbon aerogel composite material and preparation method and application thereof |
| CN112551506B (en) * | 2020-12-24 | 2022-05-17 | 中国建筑材料科学研究总院有限公司 | Antioxidant carbon aerogel composite material and preparation method and application thereof |
| CN113003947A (en) * | 2021-03-24 | 2021-06-22 | 南京工业大学 | Preparation method of silicon-based aerogel-foam material heat insulation composite material |
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Application publication date: 20170815 |