CN206843332U - A kind of netted hollow foam enhancing charcoal-aero gel high temperature insulating core - Google Patents
A kind of netted hollow foam enhancing charcoal-aero gel high temperature insulating core Download PDFInfo
- Publication number
- CN206843332U CN206843332U CN201720188590.4U CN201720188590U CN206843332U CN 206843332 U CN206843332 U CN 206843332U CN 201720188590 U CN201720188590 U CN 201720188590U CN 206843332 U CN206843332 U CN 206843332U
- Authority
- CN
- China
- Prior art keywords
- foam
- charcoal
- aero gel
- high temperature
- silicon carbide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000006260 foam Substances 0.000 title claims abstract description 45
- 239000004964 aerogel Substances 0.000 title claims abstract description 29
- 230000002708 enhancing effect Effects 0.000 title claims abstract description 11
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 26
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000004966 Carbon aerogel Substances 0.000 claims abstract description 9
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 230000011218 segmentation Effects 0.000 claims abstract description 6
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 12
- 239000002131 composite material Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 238000005229 chemical vapour deposition Methods 0.000 abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 230000008033 biological extinction Effects 0.000 description 4
- 238000003763 carbonization Methods 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002070 nanowire Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000004965 Silica aerogel Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 238000001467 acupuncture Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Landscapes
- Carbon And Carbon Compounds (AREA)
Abstract
A kind of netted hollow foam enhancing charcoal-aero gel high temperature insulating core, it is characterized in that, described netted hollow composite foam enhancing charcoal-aero gel high temperature insulating core includes hollow sic foam, latticed silicon carbide nanometer line, charcoal-aero gel, macropore inside latticed silicon carbide nanometer line filling segmentation sic foam, carbon aerogels are uniformly filled in all holes of foam Interior, and density is 0.07~0.2g/cm3, 5~15MPa of compression strength.Hollow sic foam is using flexible carbon foam as template, is prepared using chemical vapour deposition technique, 0.5~2 μm of sic foam skeleton wall thickness, the latticed a diameter of 50~200nm of silicon carbide nanometer line, and the average vestibule size of charcoal-aero gel is 20~30nm.The utility model has the advantage that：1st, hollow carborundum skeleton improves foam specific surface area and mechanical property；2nd, silicon carbide nanometer line reduces foam aperture, improves mechanics of materials intensity, reduces the thermal conductivity of material；3rd, charcoal-aero gel reduces the overall high-temperature heat conductivity of composite.
Description
Technical field
The present invention relates to a kind of high temperature insulating core, more particularly to a kind of netted hollow foam enhancing charcoal-aero gel high temperature every
Hot core.
Background technology
Aeroge is a kind of porous heat insulation material received significant attention in recent years.The solid skeleton of aeroge is by nanometer
Grain crosslinking forms, and aperture has very high specific surface area between several nanometers to tens nanometers, and most common aeroge has
SiO2、Al2O3And charcoal-aero gel etc..Because aeroge has unique nanostructured, its heat conduction path is substantially suppressed,
With extremely low thermal conductivity.Charcoal-aero gel is a kind of by the molecular porous unformed charcoal with tridimensional network of nanoparticle
Cellulosic material.Due to the uniqueness in structure, it is many special that aeroge has in mechanics, acoustics, calorifics, optics, electricity etc.
Property, such as：Minimum thermal conductivity, apparent density, high specific surface area, porosity etc..Charcoal-aero gel has good heat
Stability and admirably heat-proof quality, there is stronger infrared absorbance, can effectively reduce radiant heat conductanc during high temperature,
High temperature insulating field has great application potential.Although carbon aerogels have the advantages of so many, charcoal-aero gel is still
Shortcoming be present, such as low intensity, fragility are big, carbonisation volume contraction is big.
Netted hollow foam is that the vestibule composition of a kind of hollow member and nano wire segmentation has tridimensional network
Light porous material, density are about 30~200mg/cm3.And netted hollow sic foam be using flexible carbon foam as template,
By chemical vapour deposition technique in charcoal element skeleton surface successively growing silicon carbide film and silicon carbide nanometer line, netted hollow carbonization
Silicon foam has the advantages such as density is low, hot property is excellent, thermal conductivity is low, is both a kind of high temperature insulating material of great potential.Its
Density can be up to 50000Nm/Kg, room temperature thermal conductivity factor compared to gel casting sic foam bottom an order of magnitude, specific strength
Only 35~60mW/mK, as super speed vehicle thermal protection system part, it is ensured that in harsh, complicated Airflow Environment
Reliability.Therefore, charcoal-aero gel is strengthened by netted hollow sic foam, it is compound with reference to the ultralow thermal conductivity of charcoal-aero gel
Prepare netted hollow foam enhancing charcoal-aero gel high temperature insulating core and be applied to super speed vehicle thermal protection system.
" atmosphere pressure desiccation prepares high purity carbon fiberreinforced carbon aeroge to document, talks beautiful, Sun Chaoming, Yang Liping, Chen Feng, glass
In glass steel/composite, the 9th phase in 2013 " in carbon aerogels prepare ageing process, the carbon fiber acupuncture of different-thickness is added
Felt, through sol gel reaction, solvent displacement, constant pressure and dry and high temperature cabonization obtain carbon fiber felt enhancing carbon aerogels material, close
Spend for 0.5g/cm3, compression strength is 1.9~2.4Mpa.But carbon fiber thermal conductivity factor is high, can influence the heat-insulated of carbon aerogels
Performance.
The Chinese invention patent of Application No. 201410743407.3 discloses a kind of high temperature resistance and high strength SiC carbon coateds bubble
Foam composite heat-insulated material and preparation method thereof, it is characterised in that high temperature resistance and high strength SiC coats carbon foam composite heat-insulated material
It is that one kind is made up of carbon foam and carbonization silica aerogel；Temperature tolerance is at 690~700 DEG C in its air atmosphere, than pure carbon foam material
Material improves about 100 DEG C, and apparent density is in 0.4~0.6g/cm3, compression strength in 11~15MPa, room temperature thermal conductivity 0.4~
0.6W/(m.K).Its preparation method is that silicon dioxide gel is injected into the hole of carbon foam, by sol-gel, always
Change and be dried to obtain the silica aerogel composite heat-insulated material of carbon foam enhancing, then carry out high temperature under inert atmosphere protection
Heat treatment, so as to prepare a kind of high temperature resistance and high strength SiC claddings carbon foam composite heat-insulated material.The invention has materials simple
With technique it is simple and direct the advantages of, technical process is simple to operate, easily realizes large-scale production.But the SiC bags that the preparation method obtains
It is loose to cover material structure, compactness is poor, and thermal conductivity factor is very high, and density is larger.
The content of the invention
The technical problem to be solved in the present invention is overcome the deficiencies in the prior art, it is desirable to provide a kind of netted hollow foam increases
Strong charcoal-aero gel high temperature insulating core, it is characterised in that described netted hollow composite foam enhancing charcoal-aero gel high temperature insulating
Core includes hollow sic foam, latticed silicon carbide nanometer line, charcoal-aero gel, latticed silicon carbide nanometer line filling segmentation
Macropore inside sic foam, carbon aerogels are uniformly filled in all holes of foam Interior, and density is 0.07~0.2g/cm3,
5~15MPa of compression strength.
Described hollow sic foam is using flexible carbon foam as template, is prepared using chemical vapour deposition technique, carbonization
0.5~2 μm of silicon foam skeleton wall thickness.
Described latticed silicon carbide nanometer line is prepared using chemical vapour deposition technique, a diameter of 50~200nm.
Described charcoal-aero gel is compound in porous foam using atmosphere pressure desiccation, and average vestibule size is 20~150nm,
Average grain diameter is 12~20nm, and density is 0.05~0.012g/cm3, specific extinction coefficient is 300~500m2/kg。
The present invention has the advantage that：1st, hollow carborundum skeleton improves foam specific surface area and mechanical property, is easy to compound
Charcoal-aero gel；2nd, silicon carbide nanometer line reduces foam aperture, improves mechanics of materials intensity, reduces the thermal conductivity of material；3rd, charcoal gas
Gel density is low, and thermal diffusion coefficient is low, and specific extinction coefficient is high, and composite global density low and high temperature thermal conductivity is low.
Brief description of the drawings
Fig. 1 is that netted hollow foam strengthens charcoal-aero gel high temperature insulating core
[10] it is silicon carbide nanometer line；[20] it is carborundum hollow member；[30] it is charcoal-aero gel.
Embodiment
With reference to specific embodiment, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention, after the present invention has been read, various equivalences of the those skilled in the art to the present invention
The modification of form falls within the application appended claims and limited.
Embodiment 1
Reference picture 1, netted hollow composite foam strengthen charcoal-aero gel high temperature insulating core by hollow sic foam, grid
Shape silicon carbide nanometer line, charcoal-aero gel composition, latticed silicon carbide nanometer line filling segmentation sic foam inside macropore, carbon gas
Gel is uniformly filled in all holes of foam Interior, density 0.1g/cm3, compression strength 10MPa, sic foam bone
0.7 μm of frame wall thickness, netted carborundum nanowire diameter are 100nm, and the average vestibule sizes of carbon aerogels is 30nm, average grain diameter
For 15nm, density 0.08g/cm3, specific extinction coefficient 310m2/kg。
Embodiment 2
Reference picture 1, netted hollow composite foam strengthen charcoal-aero gel high temperature insulating core by hollow sic foam, grid
Shape silicon carbide nanometer line, charcoal-aero gel composition, latticed silicon carbide nanometer line filling segmentation sic foam inside macropore, carbon gas
Gel is uniformly filled in all holes of foam Interior, density 0.15g/cm3, compression strength 9MPa, sic foam bone
1.2 μm of frame wall thickness, netted carborundum nanowire diameter are 100nm, and the average vestibule sizes of carbon aerogels is 52nm, average grain diameter
For 18nm, density 0.11g/cm3, specific extinction coefficient 350m2/kg。
Two embodiments of the present invention are above are only, but the design concept of the present invention is not limited thereto, all profits
The change of unsubstantiality is carried out to the present invention with this design, the behavior for invading the scope of protection of the invention all should be belonged to.In every case it is
Any type of letter made without departing from the content of technical solution of the present invention, the technical spirit according to the present invention to above example
Single modification, equivalent variations and remodeling, still fall within the protection domain of technical solution of the present invention.
Claims (1)
1. a kind of netted hollow foam enhancing charcoal-aero gel high temperature insulating core, it is characterised in that described is netted hollow compound
Foam enhancing charcoal-aero gel high temperature insulating core includes hollow sic foam, latticed silicon carbide nanometer line, charcoal-aero gel, net
Macropore inside trellis silicon carbide nanometer line filling segmentation sic foam, carbon aerogels are uniformly filled in all holes of foam Interior
Gap, density are 0.07~0.2g/cm3, 5~15MPa of compression strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720188590.4U CN206843332U (en) | 2017-02-22 | 2017-02-22 | A kind of netted hollow foam enhancing charcoal-aero gel high temperature insulating core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720188590.4U CN206843332U (en) | 2017-02-22 | 2017-02-22 | A kind of netted hollow foam enhancing charcoal-aero gel high temperature insulating core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206843332U true CN206843332U (en) | 2018-01-05 |
Family
ID=60789652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720188590.4U Active CN206843332U (en) | 2017-02-22 | 2017-02-22 | A kind of netted hollow foam enhancing charcoal-aero gel high temperature insulating core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206843332U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109627006A (en) * | 2018-12-28 | 2019-04-16 | 西安交通大学 | A kind of large size silicon-carbide aeroge and preparation method thereof |
| CN111875921A (en) * | 2020-07-14 | 2020-11-03 | 苏州宏久航空防热材料科技有限公司 | High-performance electromagnetic shielding material based on 5G and preparation method thereof |
| CN112635731A (en) * | 2020-12-17 | 2021-04-09 | 浙江锂宸新材料科技有限公司 | Preparation method of composite nano-silicon negative electrode material based on conductive carbon aerogel and product thereof |
-
2017
- 2017-02-22 CN CN201720188590.4U patent/CN206843332U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109627006A (en) * | 2018-12-28 | 2019-04-16 | 西安交通大学 | A kind of large size silicon-carbide aeroge and preparation method thereof |
| CN111875921A (en) * | 2020-07-14 | 2020-11-03 | 苏州宏久航空防热材料科技有限公司 | High-performance electromagnetic shielding material based on 5G and preparation method thereof |
| CN112635731A (en) * | 2020-12-17 | 2021-04-09 | 浙江锂宸新材料科技有限公司 | Preparation method of composite nano-silicon negative electrode material based on conductive carbon aerogel and product thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3878809B1 (en) | Flexible boron nitride nano-belt aerogel and preparation method therefor | |
| CN206843332U (en) | A kind of netted hollow foam enhancing charcoal-aero gel high temperature insulating core | |
| CN106747628A (en) | A kind of high temperature resistant foam strengthens SiO2Aerogel insulating material and preparation method thereof | |
| CN109627006B (en) | Large-size silicon carbide aerogel and preparation method thereof | |
| CN104478475B (en) | A kind of high temperature resistance and high strength SiC carbon coated foam composite heat-insulated material and its preparation method | |
| CN106904973A (en) | A kind of carbon-based heat insulation composite material of the foam of high-strength light | |
| CN100571859C (en) | The preparation method of oxide nano thread reinforced transparency aerogel block body material | |
| CN101698584B (en) | Fiber-reinforcement silicon dioxide aerogel continuous felt and preparation method thereof | |
| Wu et al. | Engineering thermal and mechanical properties of multilayer aligned fiber-reinforced aerogel composites | |
| CN110407606A (en) | A kind of high silicone/phenolic resin material and preparation method thereof with excellent ablation resistance and heat-proof quality | |
| CN108467253A (en) | A kind of silicon carbide nanometer line precast body enhancing alumina aerogels material and preparation method thereof | |
| CN106007803A (en) | High-temperature-resistant porous ceramic/alumina aerogel thermal insulation material | |
| CN103551091A (en) | Method for drying aerogel | |
| CN102030337A (en) | Method for preparing silicon dioxide (SiO2) aerogel with continuous density gradient | |
| CN107313297A (en) | Hydrophobicity thermal insulating paper and preparation method thereof | |
| CN109988397A (en) | A kind of preparation method of silica aerogel/epoxy resin composite material | |
| CN108840671A (en) | The preparation method and product of silica heat-barrier material with Multi-scale model | |
| CN109175374A (en) | The preparation method of the foamed aluminium filling aluminium-alloy pipe composite construction of carbon nanotube enhancing | |
| CN108689680A (en) | A kind of preparation method of effectively insulating heat preservation aerogel blanket | |
| CN109020469A (en) | A kind of SiO2Aeroge/SiC foam composite insulation material and preparation method thereof | |
| CN103241391A (en) | Heat insulation component for heat control of a Mars landing machine, and manufacturing method thereof | |
| Ding et al. | Optimization of ultralight SiO2/TiO2 nanofibrous aerogel for high-temperature application | |
| CN110076325A (en) | A kind of carbon foam-silicon carbide-metallic composite preparation method | |
| Maddocks et al. | Biotemplated synthesis of novel porous SiC | |
| CN108071050A (en) | Novel nano sheathing paper and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |