CN108530014B - A kind of high temperature resistant sandwich heat-barrier material and preparation method thereof that strain property is excellent - Google Patents
A kind of high temperature resistant sandwich heat-barrier material and preparation method thereof that strain property is excellent Download PDFInfo
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- CN108530014B CN108530014B CN201810447084.1A CN201810447084A CN108530014B CN 108530014 B CN108530014 B CN 108530014B CN 201810447084 A CN201810447084 A CN 201810447084A CN 108530014 B CN108530014 B CN 108530014B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B30/00—Compositions for artificial stone, not containing binders
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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Abstract
The present invention relates to a kind of high temperature resistant sandwich heat-barrier materials and preparation method thereof that strain property is excellent, and described method includes following steps: (1) high temperature resistant panel being obtained precast body in conjunction with insulated core layer；(2) the excellent high temperature resistant sandwich heat-barrier material of strain property is made in the precast body obtained with sol precursor impregnation steps (1)；Wherein, the pressure of the dipping is -0.1~1.0MPa, and the time of the dipping is 12~72h, and the duplicate number of dipping is 1~20 time.The method of the present invention is simple, easy to operate, environmental pollution is small.The strain property into 1200 DEG C of application environments is excellent in room temperature for the excellent high temperature resistant sandwich heat-barrier material of strain property produced by the present invention, it is able to maintain higher antiscour and load-carrying properties, it is provided simultaneously with lower thermal coefficient and preferable heat-proof quality, is especially suitable for aerospace industries, civilian industry etc..
Description
Technical field
The invention belongs to heat-barrier material technical field more particularly to a kind of high temperature resistant sandwich that strain property is excellent every
Hot material and preparation method thereof.
Background technique
When hypersonic aircraft is long in atmosphere during high-performance cruise, aircraft will bear harsh air and heat
Load effect.In order to guarantee that aircraft contour structures are complete, internal component is worked normally, and is needed using having both temperature-resistance thermal-insulation
With the outer heat insulation material of bearing function.
Outer heat insulation material common at present can be divided into two class of high temperature resistant sandwich material and thermal insulation tile material, wherein high temperature resistant
Sandwich material heat resistance meets 1200 DEG C of uses, thermal coefficient < 0.1W/mK, compression strength > 1MPa, anti-high-speed flow
Performance of flushing is excellent, but the strain property of material (compatibility of deformation performance) is relatively low, the strain (destroying microstrain) of material
About 2000 μ ε, amount of deflection are 3~4mm, just can satisfy the requirement of the outer heat-protection system of aircraft, and domain degree is lower.
Chinese patent application CN201610816609.5 discloses a kind of answering for improvement high temperature resistant sandwich heat-barrier material
The method for being denaturalized energy, but the strain of high temperature resistant sandwich heat-barrier material made from this method only up to reach 4000 μ ε,
And when the high temperature resistant sandwich heat-barrier material that strain is 4000 μ ε is made using this method, the heat-insulated material of high temperature resistant sandwich
The room temperature thermal conductivity of material is 0.070W/mK, and heat-proof quality decreases；This previous research work shows current method
Hardly resulting in strain property more preferably and not reduces the high temperature resistant sandwich heat-barrier material of heat-proof quality.And for high temperature resistant interlayer
For structural heat-insulation material, under conditions of not influencing the heat resistance and heat-proof quality of material, the strain property of material is better,
It is more suitable for applying outside aircraft in heat-protection system.
Therefore, it is more excellent and do not reduce the high temperature resistant sandwich of heat-proof quality to be highly desirable to provide a kind of strain property
The preparation method of heat-barrier material.
Summary of the invention
To solve the problems, such as one or more, the present invention provides a kind of high temperature resistant sandwich that strain property is excellent every
Hot material and preparation method thereof.The method of the present invention is simple, easy to operate, environmental pollution is small.Strain property produced by the present invention
The strain property into 1200 DEG C of application environments is excellent in room temperature for excellent high temperature resistant sandwich heat-barrier material, is able to maintain higher
Antiscour and load-carrying properties, be provided simultaneously with lower thermal coefficient and preferable heat-proof quality etc..
To achieve the goals above, the present invention provides a kind of high temperature resistant interlayer knot that strain property is excellent in first aspect
The preparation method of structure heat-barrier material, described method includes following steps:
(1) high temperature resistant panel is obtained into precast body in conjunction with insulated core layer；
(2) the excellent high temperature resistant interlayer knot of strain property is made in the precast body obtained with sol precursor impregnation steps (1)
Structure heat-barrier material；
Wherein, the pressure of the dipping is -0.1~1.0MPa, and the time of the dipping is 12~72h, the dipping weight
Multiple number is 1~20 time.
Preferably, the duplicate number of dipping is 5~20 times.
Preferably, the thickness ratio of the high temperature resistant panel and the insulated core layer is 1:(2~20), preferably 1:(5~
20)。
Preferably, the concentration of the sol precursor is 10wt%~60wt%.
Preferably, the high temperature resistant panel is refractory ceramics panel.
Preferably, the insulated core layer is heat-insulated aeroge sandwich layer.
Preferably, the sol precursor is selected from by silica precursor sol body and aluminum oxide sol precursor group
At group.
The present invention provides strain property made from the preparation method as the present invention described in first aspect in second aspect
Excellent high temperature resistant sandwich heat-barrier material.
Preferably, the strain of the excellent high temperature resistant sandwich heat-barrier material of the strain property is not less than 3000 μ ε, scratches
Degree is not less than 5mm.
Preferably, the strain of the excellent high temperature resistant sandwich heat-barrier material of the strain property is 3000 μ of μ ε~5000
ε, amount of deflection are 5~10mm.
The present invention at least has the following beneficial effects: compared with prior art
(1) high temperature resistant sandwich heat-barrier material strain property (compatibility of deformation performance) produced by the present invention is excellent, resistance to height
The strain of warm sandwich heat-barrier material (high temperature resistant panel) is not less than 3000 μ ε, and amount of deflection is not less than 5mm.
(2) strain property (compatibility of deformation performance) of high temperature resistant sandwich heat-barrier material produced by the present invention passes through improvement
Material preparation technology parameter (dip parameters) is controlled, such as the strain of high temperature resistant sandwich heat-barrier material can be controlled
For 3000~5000 μ ε, amount of deflection is 5~10mm.
(3) method of the invention is simple, easy to operate, environmental pollution is small, used raw material, including precast body,
Sol precursor etc. is non-toxic or low-toxic material；Preparation method of the invention does not generate any object polluted the environment
Matter.
(4) the excellent high temperature resistant sandwich heat-barrier material of strain property produced by the present invention is in room temperature to 1200 DEG C of applications
Strain property is excellent in environment, is able to maintain higher antiscour and load-carrying properties, be provided simultaneously with lower thermal coefficient and compared with
Good heat-proof quality etc..
(5) present invention can be used for preparing the component product of various shape specification, in aerospace industry and civilian work
It is with a wide range of applications in the environment of industry.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the embodiment of the present invention, to this hair
Bright technical solution is clearly and completely described.Obviously, described embodiment is a part of the embodiments of the present invention, and
The embodiment being not all of.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work
Under the premise of every other embodiment obtained, shall fall within the protection scope of the present invention.
The present invention provides a kind of preparation of high temperature resistant sandwich heat-barrier material that strain property is excellent in first aspect
Method, described method includes following steps:
(1) high temperature resistant panel is obtained into precast body in conjunction with insulated core layer；
(2) the excellent high temperature resistant interlayer knot of strain property is made in the precast body obtained with sol precursor impregnation steps (1)
Structure heat-barrier material；
Wherein, the pressure of the dipping be -0.1~1.0MPa (such as -0.1, -0.05,0,0.1,0.2,0.3,0.4,
0.5,0.6,0.7,0.8,0.9 or 1.0MPa), time of the dipping be 12~72h (such as 12,24,36,48,60 or
72h), the duplicate number of dipping is 1~20 time (such as 1,3,5,10,15 or 20 time).
The present invention is not particularly limited the high temperature resistant panel and the insulated core layer, and the high temperature resistant panel is tool
There is the panel of high temperature resistance, the insulated core layer is the sandwich layer with heat-proof quality；The present invention is to the resistance to height
Method of the warm panel in conjunction with the insulated core layer is also not particularly limited, and can use various known method progress, example
Such as the high temperature resistant panel and the insulated core layer are combined together by the methods of bonding, suture, winding.
In the present invention, the precast body that step (1) obtains has sandwich, from top to bottom includes high temperature resistant top panel
Layer, insulated core layer and high temperature resistant lower panel layer, wherein high temperature resistant top panel layer and high temperature resistant lower panel layer together form described
The high temperature resistant panel (high temperature resistant outer layer panel) of precast body；In the present invention, it is obtained with sol precursor impregnation steps (1) pre-
The process of body (high temperature resistant sandwich heat-barrier material precast body) processed namely the resistance to height of the sol precursor and the precast body
Dipping process (dipping) therefore in the present invention, is also denoted as dipping recombination process (dipping by the compound process of warm outer layer panel
It is compound)；In the present invention, strain property is also denoted as compatibility of deformation performance, is also denoted as strain to destroy microstrain.
High temperature resistant panel is obtained precast body by the present invention in conjunction with insulated core layer, is improved obtained by sol precursor dipping
The impregnation method of precast body, dip parameters；Reasonable impregnation pressure and dip time in the present invention, so that the present invention is in not shadow
Under the premise of the temperature-resistance thermal-insulation performance for ringing material, realizes sol precursor and dipping precast body is repeated several times, before improving colloidal sol
The dipping effect of body and the bond strength of sol precursor and high temperature resistant panel are driven, the excellent high temperature resistant of strain property has been made
Sandwich heat-barrier material.
In the present invention, the pressure control of the dipping is preferably this model of -0.05~1.0MPa in -0.1~1.0MPa
Within enclosing, if hypertonia, it will lead to sol precursor and immerse insulated core layer and cause the heat-insulated material of high temperature resistant sandwich
Expect that intensity, heat-proof quality and strain property reduce；If hypotony, dipping effect it is poor and cause sol precursor with it is resistance to
The composite effect of high temperature panel is bad, causes the reduced performance of high temperature resistant panel itself.
In the present invention, the dipping time control 12~72h this within the scope of, can if overlong time
Sol precursor is caused to immerse insulated core layer and cause high temperature resistant sandwich heat-barrier material intensity, heat-proof quality and strain property
It reduces；If the time is too short, dipping effect is poor and causes the composite effect of sol precursor and high temperature resistant panel bad, makes
At the reduced performance of high temperature resistant panel itself.
According to some preferred embodiments, the duplicate number of the dipping be 5~20 times (such as 5,7,9,10,13,
15,18 or 20 times).In the present invention, the duplicate number of the dipping preferably controls 5~20 times within the scope of this, if
Number is excessive, then will lead to sol precursor and immerse insulated core layer and cause high temperature resistant sandwich heat-barrier material intensity, heat-insulated
Performance and strain property reduce；If number is very few, degree of steeping is not high, the compound effect of sol precursor and high temperature resistant panel
Fruit is bad, and causes the reduced performance of high temperature resistant panel itself, is unable to reach requirement.
According to some preferred embodiments, the thickness ratio of the high temperature resistant panel and the insulated core layer be 1:(2~
20) (such as 1:2,1:3,1:4,1:5,1:6,1:7,1:8,1:9,1:10,1:11,1:12,1:13,1:14,1:15,1:16,1:
17,1:18,1:19 or 1:20), preferably 1:(5~20) (such as 1:5,1:8,1:10,1:12,1:15,1:18 or 1:20).?
In the present invention, the thickness of the high temperature resistant panel and the insulated core layer is than preferably control in 1:(5~20) this range it
It is interior, relative to the thickness of the high temperature resistant panel, if the thickness of insulated core layer is excessive, high temperature resistant sandwich heat-barrier material
Heat resistance, intensity and strain property may be decreased；If the thickness of insulated core layer is too small, high temperature resistant sandwich every
The heat-proof quality and strain property of hot material may reduce.
According to some preferred embodiments, the concentration of the sol precursor be 10wt%~60wt% (such as
10wt%, 15wt%, 16wt%, 20wt%, 25wt%, 30wt%, 32wt%, 33wt%, 35wt%, 40wt%, 41wt%,
42wt%, 45wt%, 50wt%, 55wt% or 60wt%).In the present invention, the concentration of the sol precursor is preferably controlled
System 10wt%~60wt% this within the scope of, if excessive concentration, it will cause effect of impregnation reduce and lead to high temperature resistant
Panel reduced performance；If concentration is too low, degree of steeping (dipping Compound Degree) is unable to reach requirement, will also result in high temperature resistant
Panel reduced performance.It illustrates, the solid content of the concentration of the sol precursor namely the sol precursor.
According to some preferred embodiments, the high temperature resistant panel is refractory ceramics panel.The refractory ceramics
Panel for example can be woven to obtain by ceramic yarn, the free quartzy yarn of the ceramic yarns line selection, aluminium oxide yarn and mullite
The group of yarn composition.
According to some preferred embodiments, the insulated core layer is heat-insulated aeroge sandwich layer.The heat-insulated aeroge core
Layer can be for example made by high-temperature fibre and colloidal sol compound (such as compound by way of dipping), the high-temperature fibre choosing
The group of free quartz fibre, alumina fibre and mullite fiber composition, the colloidal sol are selected from by silicon dioxide gel, three oxidations
The group of two Aluminum sols and zirconia sol composition.Particularly, in terms of the quality of the heat-insulated aeroge sandwich layer, the heat-insulated gas
The content of high-temperature fibre in gel sandwich layer is 20wt%~80wt%；Particularly, the concentration of the colloidal sol be 15wt%~
40wt%.
According to some preferred embodiments, the sol precursor is selected to be aoxidized by silica precursor sol body and three
The group of two Aluminum sol presomas composition.
The present invention provides strain property made from the preparation method as the present invention described in first aspect in second aspect
Excellent high temperature resistant sandwich heat-barrier material.In the present invention, the excellent high temperature resistant sandwich of the strain property is heat-insulated
Material is as the precast body that step (1) obtains, it may have sandwich.The excellent high temperature resistant sandwich of the strain property
Heat-barrier material includes the high temperature resistant panel layer and insulated core layer for being impregnated with sol precursor, described to be impregnated with the resistance to of sol precursor
High temperature panel layer is by being impregnated with the high temperature resistant top panel layer of sol precursor and being impregnated with the high temperature resistant lower panel of sol precursor
Layer composition, the insulated core layer are clipped between the upper and lower panel layer.Particularly, the excellent high temperature resistant interlayer of the strain property
Structural heat-insulation material includes the refractory ceramics panel layer and heat-insulated aeroge sandwich layer for being impregnated with sol precursor.
According to some preferred embodiments, the strain of the excellent high temperature resistant sandwich heat-barrier material of the strain property
Not less than 3000 μ ε, amount of deflection is not less than 5mm.
According to some preferred embodiments, the strain of the excellent high temperature resistant sandwich heat-barrier material of the strain property
For 3000 μ of μ ε~5000 ε (such as 3000,3500,3600,4000,4400,4500,4800 or 5000 μ ε), amount of deflection is 5~
10mm (such as 5.0,5.4,5.5,5.6,6.0,6.9,7.0., 7.2,7.4,7.5,7.8,8.0,8.1,8.5,8.8,9.0,
9.1,9.5,9.7,9.9 or 10.0mm).In the present invention, the strain property of the high temperature resistant sandwich heat-barrier material by every
The influence of hot sandwich layer is relatively small, is difficult to improve strain property by changing insulated core layer, therefore, described in the present invention resistance to
The strain property of high temperature sandwich heat-barrier material is it is also assumed that be the strain property of the high temperature resistant panel, the high temperature resistant
Strain and the amount of deflection of sandwich heat-barrier material are it is also assumed that be the strain and amount of deflection of the high temperature resistant panel respectively.
Currently used high temperature resistant sandwich heat-barrier material is although heat resistance meets 1200 DEG C of uses, thermal coefficient <
0.1W/mK, compression strength > 1MPa, but about 2000 μ ε of outer layer panel damage microstrain of material or so, amount of deflection 3~
4mm, has just met the requirement of the outer heat-protection system of aircraft, and domain degree is lower.By further investigation, present inventors have unexpectedly found that,
Compound mode, dip parameters etc. are impregnated by changing sol precursor, in the heat resistance and heat-proof quality for not influencing material
Under the premise of, obtain strain property more preferably high temperature resistant sandwich heat-barrier material.In the present invention, by high temperature resistant panel with
Insulated core layer combines and obtains precast body, and pressure, time and the number of the precast body are impregnated by improving the sol precursor；
Adjust the thickness ratio of the high temperature resistant panel Yu the insulated core layer；The concentration of the sol precursor is adjusted, can significantly be changed
Into the strain property of high temperature resistant sandwich heat-barrier material.For example, keeping existing performance, heat resistance, heat-insulated is not being reduced
Under the premise of performance, be made with superior strain property for example strain it is resistance to not less than 5mm's not less than 3000 μ ε, amount of deflection
High temperature sandwich heat-barrier material or strain property are controllable, and (such as strain controlling, in the 3000 μ ε of μ ε~5000, amount of deflection is controlled 5
~10mm) high temperature resistant sandwich heat-barrier material.
Below with reference to embodiment, the invention will be further described.These embodiments are only with regard to preferred implementation side of the invention
Formula is illustrated, and protection scope of the present invention is not read as pertaining only to these embodiments.
It is market purchase that various embodiments of the present invention, which are related to raw material,.
Embodiment 1
Thickness is incorporated in one with heat-insulated aeroge sandwich layer than the refractory ceramics panel for 1:15 by way of suture
It rises, obtains precast body；The silica precursor sol body for being 16wt% with concentration impregnates compound gained under the pressure of 0.1MPa
Repeated impregnations 15 times, the excellent high temperature resistant sandwich heat-barrier material of strain property is made in the precast body 12h arrived.
The performance of the excellent high temperature resistant sandwich heat-barrier material of strain property made from testing example 1: density
0.55g/cm3(GB/T 6343-2009)；Room temperature thermal coefficient 0.045W/mK (GB/T 10295-2008)；Strain is 4500
μ ε, amount of deflection are 7.4mm (ASTM C1341-00).
Embodiment 2
Thickness is incorporated in one with heat-insulated aeroge sandwich layer than the refractory ceramics panel for 1:15 by way of suture
It rises, obtains precast body；The silica precursor sol body for being 31wt% with concentration impregnates compound gained under the pressure of 0.2MPa
Repeated impregnations 10 times, the excellent high temperature resistant sandwich heat-barrier material of strain property is made in the precast body 15h arrived.
The performance of the excellent high temperature resistant sandwich heat-barrier material of strain property made from testing example 2: density
0.58g/cm3(GB/T 6343-2009)；Room temperature thermal coefficient 0.049W/mK (GB/T 10295-2008)；Strain is 4800
μ ε, amount of deflection are 8.0mm (ASTM C1341-00).
Embodiment 3~9 is substantially the same manner as Example 1, and difference is as shown in table 1.
Comparative example 1
Refractory ceramics panel is soaked under the pressure of 0.1MPa with concentration for the silica precursor sol body of 45wt%
The compound 4h of stain impregnates 1 time, and the refractory ceramics panel for being impregnated with the silica precursor sol body is made, then will be described
It is impregnated with the side of the refractory ceramics panel and heat-insulated aeroge sandwich layer of sol precursor according to thickness than passing through suture for 1:4.5
Formula is combined together, and high temperature resistant sandwich heat-barrier material is made.
Using the property of high temperature resistant sandwich heat-barrier material made from standard testing comparative example 1 in the same manner as in Example 1
Can, the results are shown in Table 1.
Comparative example 2~9 is substantially the same manner as Example 1, and difference is as shown in table 1.
From the result in table 1 it is found that the present invention impregnates compound mode and dip parameters etc. by changing sol precursor,
It is significantly superior and have both the high temperature resistant sandwich heat-barrier material of better heat-proof quality to obtain strain property.
Finally, it is stated that: the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although ginseng
It is described the invention in detail according to previous embodiment, those of ordinary skill in the art are it is understood that it still can be to each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are modified
Or replacement, depart from the spirit and scope of the technical scheme of various embodiments of the present invention the essence of technical solution.
Claims (8)
1. a kind of preparation method for the high temperature resistant sandwich heat-barrier material that strain property is excellent, which is characterized in that the method
Include the following steps:
(1) high temperature resistant panel is obtained into precast body in conjunction with insulated core layer；The thickness of the high temperature resistant panel and the insulated core layer
Degree is than being 1:(2~20)；
(2) precast body obtained with sol precursor impregnation steps (1), be made the excellent high temperature resistant sandwich of strain property every
Hot material, the insulated core layer are heat-insulated aeroge sandwich layer；The concentration of the sol precursor is 10wt%~60wt%；
Wherein, the pressure of the dipping is -0.1~1.0MPa, and the time of the dipping is 12~72h, and the dipping is duplicate
Number is 1~20 time.
2. preparation method according to claim 1, it is characterised in that:
The duplicate number of dipping is 5~20 times.
3. preparation method according to claim 1, it is characterised in that:
The thickness ratio of the high temperature resistant panel and the insulated core layer is 1:(5~20).
4. preparation method according to claim 1, it is characterised in that:
The high temperature resistant panel is refractory ceramics panel.
5. preparation method according to claim 1, it is characterised in that:
The sol precursor is selected from the group being made of silica precursor sol body and aluminum oxide sol precursor.
6. the excellent high temperature resistant sandwich of the strain property as made from preparation method described in any one of claim 1 to 5 every
Hot material.
7. the excellent high temperature resistant sandwich heat-barrier material of strain property according to claim 6, it is characterised in that:
The strain of the excellent high temperature resistant sandwich heat-barrier material of the strain property is not less than 3000 μ ε, and amount of deflection is not less than 5mm.
8. the excellent high temperature resistant sandwich heat-barrier material of strain property according to claim 7, it is characterised in that:
The strain of the excellent high temperature resistant sandwich heat-barrier material of the strain property be the 3000 μ ε of μ ε~5000, amount of deflection be 5~
10mm。
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| CN103101262A (en) * | 2013-02-19 | 2013-05-15 | 中国人民解放军国防科学技术大学 | High temperature-resistant and heat insulating sandwich structure composite material and preparation method thereof |
| CN103411098A (en) * | 2013-08-28 | 2013-11-27 | 航天特种材料及工艺技术研究所 | Integrated high-temperature-resistant rigid heat insulation component and production method thereof |
| CN106626581A (en) * | 2016-09-12 | 2017-05-10 | 航天特种材料及工艺技术研究所 | Method for improving strain performance of thermal insulation material used for high-temperature-resistant sandwich structure, and material prepared by using same |
| CN106584942A (en) * | 2016-12-07 | 2017-04-26 | 航天特种材料及工艺技术研究所 | External thermal insulation material and preparation method thereof |
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