CN107387946A - A kind of vacuum heat insulation materials that can be used under the high temperature conditions - Google Patents
A kind of vacuum heat insulation materials that can be used under the high temperature conditions Download PDFInfo
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- CN107387946A CN107387946A CN201710604381.8A CN201710604381A CN107387946A CN 107387946 A CN107387946 A CN 107387946A CN 201710604381 A CN201710604381 A CN 201710604381A CN 107387946 A CN107387946 A CN 107387946A
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- fibre
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/52—Protection, safety or emergency devices; Survival aids
- B64G1/58—Thermal protection, e.g. heat shields
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- Mechanical Engineering (AREA)
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- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Critical Care (AREA)
- Emergency Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
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Abstract
The invention discloses a kind of vacuum heat insulation materials that can be used under the high temperature conditions, it is characterised in that is made up of insulation material core and ceramic matric composite shell.Insulation material core is the insulation quilt of one or more compositions in boron nitride fiber, Zirconium oxide fibre, polycrystalline mullite fibre, alumina fibre, boron nitride powder, Zirconium powder, mullite powder, alumina powder.Ceramic matric composite is the composite that the C-base composte material of fibre reinforced, the carbon/silicon carbide ceramic matrix composite of fibre reinforced, carbon base body and the refractory carbide matrix of fibre reinforced collectively constitute, and the pressure of the gas in shell is less than 1000Pa.The material can use under 1500 DEG C of environment above, have extremely low thermal conductivity coefficient, can significantly reduce the thickness of heat-insulation layer.
Description
Technical field
The present invention relates to a kind of vacuum heat insulation materials, more particularly to a kind of vacuum insulation that can be used under the high temperature conditions
Material..
Background technology
Environmental pollution, energy crisis have turned into the problem of world today's property, save the energy Thermo Isolation Technique, low temperature cold storage,
The fields such as Refrigeration Engineering are particularly important.And research and develop environmental protection, energy-conservation, efficient heat-insulating material be can yet be regarded as a kind of effective solve
Approach.Vacuum heat-insulating plate is a kind of heat-insulation material of R and D in recent years, and traditional vacuum heat-insulating plate
Barrier film used is generally nylon protective layer, aluminium foil layer and polyethylene heat seal layer and is formed by stacking, using vacuum insulation principle,
Made vacuum heat-insulating plate has extremely low thermal conductivity factor, but the material can only use at low ambient temperatures, can not expire
The demand of foot in high temperature environments., being capable of the spy such as high temperature resistant and C-base composte material and ceramic matric composite have that intensity is high
Point, but these materials all have higher thermal conductivity factor, if being used as thickness and weight that heat-insulating material certainly will increase material.
If both advantages are combined together, i.e., vacuum heat insulation materials are made in C-base composte material or ceramic matric composite, then
So that material can use at high temperature, while also there is extremely low thermal conductivity coefficient.This is by with huge application prospect, especially
It is in national defense industry, Aero-Space etc..
Document " Chinese patent of Application No. 200520112605.6 " discloses a kind of vacuum heat-insulating plate.The material includes
There is one layer of nylon protective layer barrier film layer and warming plate, the outer surface of described barrier film layer, and its inner surface has layer of polyethylene
Hot sealing layer.Document " Chinese patent of Application No. 201010235788.6 " discloses another vacuum heat-insulating plate.Protected in tabular
Being set among adiabator through the cavity of warming plate, the inwall in cavity is covered with reflectance coating, and getter is put into cavity,
Vacuumized after being wrapped up with high-resistant diaphragm, form cavity type vacuum heat-insulating plate.Both the above vacuum heat-insulating plate is former using vacuum insulation
Reason is made, and completely cuts off heat transfer by improving internal vacuum to greatest extent, has extremely low thermal conductivity coefficient, but the material is only
It can be used under low temperature environment, can not use in the case of a high temperature.Document " publish by composite, Yin Hongfeng, Wei Jian metallurgical industry
Society " is described by 2D C/SiC composites prepared by chemical liquid phase method of impregnation in parallel carbon fiber direction and vertical carbon fiber side
To thermal conductivity factor be respectively 14 ~ 20.6 W/mK and 5.9 ~ 7 W/mK.Document be " unidirectional C/C thermal conductivity of composite materials
Calculate, Chen Jie, Xiong Xiang, Xiao Peng charcoal element technologies, 2008,27 (2):It is fine in parallel carbon that 1-4 " describes unidirectional C/C composites
It is respectively 40.65 ~ 51.12W/mK and 3.83 ~ 5.96W/mK that direction, which is tieed up, with the thermal conductivity factor in vertical carbon fiber direction.By with
Upper data are understood, for a kind of solid composite, can not meet the requirement of extremely low thermal conductivity factor, invention one kind has
The material of extremely low thermal conductivity factor and energy superhigh temperature resistant then seems extremely urgent.
The content of the invention
The technical problem to be solved in the present invention is the limitation for overcoming existing vacuum heat insulation materials temperature in use low, there is provided one
The vacuum heat insulation materials that kind can use under the high temperature conditions.
Used by realize the purpose of the present invention technical scheme be 1, a kind of vacuum that can use under the high temperature conditions it is exhausted
Hot material, it is characterised in that be made up of insulation material core and ceramic matric composite shell, insulation material core is boron nitride
Fiber, Zirconium oxide fibre, polycrystalline mullite fibre, alumina fibre, boron nitride powder, Zirconium powder, mullite powder, oxygen
Change one or more compositions in aluminium powder body, ceramic matric composite shell is fine for C-base composte material, the carbon of fibre reinforced
Tie up the carbon/silicon carbide ceramic matrix composite of enhancing, the carbon base body of fibre reinforced collectively constitutes with refractory carbide matrix
One kind in composite, ceramic matric composite outer casing thickness are 3 ~ 20mm, the gas in ceramic matric composite shell
Pressure is less than 1000Pa.
The invention has the advantages that：1. it can be used under 1500 DEG C of environment above；2. there is extremely low thermal conductivity coefficient；3.
The thickness of heat-insulation layer can be significantly reduced, saves material, reduces weight.
Brief description of the drawings
Fig. 1 is a kind of vacuum heat insulation materials sectional view that can be used under the high temperature conditions.
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 one
Reference picture 1, a kind of vacuum heat insulation materials that can be used under the high temperature conditions are by insulation material core and ceramic base composite wood
Expect that shell is formed, wherein [10] are ceramic matric composite shell, [20] are insulation material core.Ceramic matric composite shell
Sealed envelope insulation material core, insulation material core are the insulation quilt of boron nitride fiber composition.Ceramic matric composite is carbon
Fibre-reinforced carbon/silicon carbide ceramic matrix composite, ceramic matric composite outer casing thickness are 10mm, the pressure of the gas in shell
It is less than 1000Pa by force.
Embodiment two
Reference picture 1, a kind of vacuum heat insulation materials that can be used under the high temperature conditions are by insulation material core and ceramic base composite wood
Expect that shell is formed, wherein [10] are ceramic matric composite shell, [20] are insulation material core.Ceramic matric composite shell
Sealed envelope insulation material core, insulation material core are the insulation quilt of polycrystalline mullite fibre composition.Ceramic matric composite
For the C-base composte material of fibre reinforced, ceramic matric composite outer casing thickness is 6mm, and the pressure of the gas in shell is less than
1000Pa。
Embodiment three
Reference picture 1, a kind of vacuum heat insulation materials that can be used under the high temperature conditions are by insulation material core and ceramic base composite wood
Expect that shell is formed, wherein [10] are ceramic matric composite shell, [20] are insulation material core.Ceramic matric composite shell
Sealed envelope insulation material core, insulation material core are the insulation quilt of Zirconium oxide fibre composition.Ceramic matric composite is carbon
The composite that fibre-reinforced carbon base body collectively constitutes with refractory metal zirconium carbide matrix, ceramic matric composite outer casing thickness
For 8mm, the pressure of the gas in shell is less than 1000Pa.
Example IV
Reference picture 1, a kind of vacuum heat insulation materials that can be used under the high temperature conditions are by insulation material core and ceramic base composite wood
Expect that shell is formed, wherein [10] are ceramic matric composite shell, [20] are insulation material core.Ceramic matric composite shell
Sealed envelope insulation material core, insulation material core are the insulation quilt that Zirconium oxide fibre and Zirconium powder form.Ceramic base
Composite is the carbon/silicon carbide ceramic matrix composite of fibre reinforced, and ceramic matric composite outer casing thickness is 10mm, shell
The pressure of interior gas is less than 1000Pa.
Claims (2)
1. a kind of vacuum heat insulation materials that can be used under the high temperature conditions, it is characterised in that answered by insulation material core and ceramic base
Condensation material shell form, insulation material core be boron nitride fiber, Zirconium oxide fibre, polycrystalline mullite fibre, alumina fibre,
One or more compositions in boron nitride powder, Zirconium powder, mullite powder, alumina powder, ceramic matric composite
Shell is the C-base composte material of fibre reinforced, the carbon/silicon carbide ceramic matrix composite of fibre reinforced, fibre reinforced
One kind in the composite that carbon base body collectively constitutes with refractory carbide matrix, ceramic matric composite outer casing thickness are
3~20mm。
2. vacuum heat insulation materials according to claim 1, it is characterised in that in described ceramic matric composite shell
The pressure of gas is less than 1000Pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710604381.8A CN107387946A (en) | 2017-07-24 | 2017-07-24 | A kind of vacuum heat insulation materials that can be used under the high temperature conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710604381.8A CN107387946A (en) | 2017-07-24 | 2017-07-24 | A kind of vacuum heat insulation materials that can be used under the high temperature conditions |
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| Publication Number | Publication Date |
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| CN107387946A true CN107387946A (en) | 2017-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710604381.8A Pending CN107387946A (en) | 2017-07-24 | 2017-07-24 | A kind of vacuum heat insulation materials that can be used under the high temperature conditions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108516858A (en) * | 2018-04-20 | 2018-09-11 | 苏州宏久航空防热材料科技有限公司 | A kind of high-temperature vacuum heat insulation composite material with ceramic fibre shell |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295028A (en) * | 2013-07-17 | 2015-01-21 | 戴长虹 | Ceramic composite vacuum plate and preparation method thereof |
| CN104295017A (en) * | 2013-07-17 | 2015-01-21 | 戴长虹 | Metal vacuum composite insulation plate with getter and preparation method thereof |
| US20150079317A1 (en) * | 2012-05-23 | 2015-03-19 | Sgl Carbon Se | Method for producing a thermal insulation body |
| CN105198468A (en) * | 2015-09-05 | 2015-12-30 | 苏州宏久航空防热材料科技有限公司 | Preparation method of vacuum heat-insulation material used at high temperature of 1,000 to 2,200DEG C |
| CN105570614A (en) * | 2015-12-30 | 2016-05-11 | 南京航空航天大学 | High-temperature vacuum thermal insulation composite material with infrared reflection layers added therein |
-
2017
- 2017-07-24 CN CN201710604381.8A patent/CN107387946A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150079317A1 (en) * | 2012-05-23 | 2015-03-19 | Sgl Carbon Se | Method for producing a thermal insulation body |
| CN104295028A (en) * | 2013-07-17 | 2015-01-21 | 戴长虹 | Ceramic composite vacuum plate and preparation method thereof |
| CN104295017A (en) * | 2013-07-17 | 2015-01-21 | 戴长虹 | Metal vacuum composite insulation plate with getter and preparation method thereof |
| CN105198468A (en) * | 2015-09-05 | 2015-12-30 | 苏州宏久航空防热材料科技有限公司 | Preparation method of vacuum heat-insulation material used at high temperature of 1,000 to 2,200DEG C |
| CN105570614A (en) * | 2015-12-30 | 2016-05-11 | 南京航空航天大学 | High-temperature vacuum thermal insulation composite material with infrared reflection layers added therein |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108516858A (en) * | 2018-04-20 | 2018-09-11 | 苏州宏久航空防热材料科技有限公司 | A kind of high-temperature vacuum heat insulation composite material with ceramic fibre shell |
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Application publication date: 20171124 |