CN110256103A - One method of porous alumina ceramics base phase becomes heat-insulation composite material - Google Patents
One method of porous alumina ceramics base phase becomes heat-insulation composite material Download PDFInfo
- Publication number
- CN110256103A CN110256103A CN201910650757.8A CN201910650757A CN110256103A CN 110256103 A CN110256103 A CN 110256103A CN 201910650757 A CN201910650757 A CN 201910650757A CN 110256103 A CN110256103 A CN 110256103A
- Authority
- CN
- China
- Prior art keywords
- parts
- composite material
- alumina
- insulation composite
- heat
- 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.)
- Pending
Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 239000000919 ceramic Substances 0.000 title claims abstract description 55
- 238000009413 insulation Methods 0.000 title claims abstract description 24
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 40
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 21
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 19
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 17
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000008117 stearic acid Substances 0.000 claims abstract description 17
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000012782 phase change material Substances 0.000 claims abstract description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 7
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 239000010703 silicon Substances 0.000 claims abstract description 7
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 6
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000005470 impregnation Methods 0.000 claims abstract description 4
- 238000002844 melting Methods 0.000 claims abstract description 4
- 230000008018 melting Effects 0.000 claims abstract description 4
- 239000005909 Kieselgur Substances 0.000 claims abstract description 3
- 239000002994 raw material Substances 0.000 claims abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 239000004411 aluminium Substances 0.000 claims 1
- 238000003763 carbonization Methods 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- 239000002904 solvent Substances 0.000 abstract description 5
- 230000009466 transformation Effects 0.000 abstract description 5
- 239000000377 silicon dioxide Substances 0.000 description 12
- 230000008595 infiltration Effects 0.000 description 8
- 238000001764 infiltration Methods 0.000 description 8
- 230000007704 transition Effects 0.000 description 7
- 238000000498 ball milling Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 229960000935 dehydrated alcohol Drugs 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000002706 hydrostatic effect Effects 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 238000010257 thawing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
- C04B38/067—Macromolecular compounds
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/08—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding porous substances
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Thermal Insulation (AREA)
Abstract
The present invention relates to phase transformation heat-insulation composite material technical fields, and disclose a method of porous alumina ceramics base phase and become heat-insulation composite material, the raw material including following parts by weight proportion: 40~60 parts of micron order alumina ceramic grain, 10~30 parts of micron order silicon carbide ceramics particle, 30~50 parts of micron silicon diatomaceous earth, 6~15 parts of micron silicon colloidal sol, 10~20 parts of polyethylene glycol hole sealing agent, 100 parts of n-hexane solvent, 200 parts of stearic acid;Material is made for high latent heat phase-change material, based on the alumina porous ceramic of the high porosity of preparation by stearic acid, alumina porous ceramic base phase is prepared using melting method of impregnation and becomes heat-insulation composite material.The present invention solves in current existing thermal protection system, in the case where integrally-built volume and weight changes less, the technical issues of system heat-insulating capability can not be effectively improved.
Description
Technical field
The present invention relates to phase transformation heat-insulation composite material technical field, a specially method of porous alumina ceramics base phase becomes heat-insulated
Composite material.
Background technique
As increasingly maturation, the flying speed of aircraft of hypersonic aircraft engine technology may reach five times
Velocity of sound is more, and the flight time will also be increased to a hour rank, and serious Aerodynamic Heating can make aircraft external skin temperatures fast
Speed increases, and temperature ramp-up rate is substantially square directly proportional to speed, such as in sea level altitude, when guided missile is with 8~12
When the speed flight of Mach, aircraft surface temperature will be up to 2400 DEG C, and it is very high in the generation of aircraft outer wall to start heating
Heating rate (540~820 DEG C/s), this requires the thermal protection systems of aircraft to have fabulous anti-heat-proof quality, to ensure
Its internal temperature will not be excessively high, provides a suitable temperature environment for internal device and load.
The heat-insulating capability for improving thermal protection system at present realizes such as have more mainly by the material structure of comprehensive lower thermal conductivity
The Fibrous insulation of lower thermal conductivity, the reflectance coating of high reflectance and main passive heat absorption technology etc..Intrinsically, heat is anti-
The effect of protecting system is exactly to pass through to select suitable material system and structure, and system is made to have lesser pyroconductivity or heat logical
Rate is crossed, to realize the ability of control system temperature, method is mostly low comprehensive thermal conductivity, energy reflection, energy heat absorption etc..
However phase-change material from a kind of phase into another phase transition process along with a large amount of thermal change, and
During phase transformation, material own temperature hardly happens variation, simultaneously because non-chemical variation, has reusable
Property, therefore be introduced into insulation system, there is important push away to the breakthrough of the following novel high speed aircraft thermal protection key technology
Movement is used.The effect that phase-change material plays in thermal protection system can illustrate that phase-change material can with simplified Equivalent heat path
To regard a thermal resistance R as0It connects with hot melt C, before it is not up to phase transition temperature and after undergoing phase transition, just corresponds to a heat
Hinder R0Heat transfer, when temperature is raised near phase transition temperature, phase-change material is equivalent to thermal capacitance C heat absorption, and the size of thermal capacitance depends on phase
Become the quality and latent heat size of material, so preventing it is, in principle, that existing heat can will be introduced with the phase-change material of high latent heat
In watch box system, in the case where integrally-built volume and weight changes less, the heat-insulating capability of system can be substantially improved, is prolonged
The long aircraft high-speed flight time or make its at the same time in higher speed can be used fly.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a method of porous alumina ceramics base phases to become heat-insulation composite material,
It solves in current existing thermal protection system, it, can not be effective in the case where integrally-built volume and weight changes less
The technical issues of improvement system heat-insulating capability.
(2) technical solution
To achieve the above object, the invention provides the following technical scheme:
One method of porous alumina ceramics base phase becomes heat-insulation composite material, the raw material including following parts by weight proportion: 40~
60 parts of micron order alumina ceramic grain, 10~30 parts of micron order silicon carbide ceramics particle, 30~50 parts of micron silicon
Diatomaceous earth, 6~15 parts of micron silicon colloidal sol, 10~20 parts of polyethylene glycol hole sealing agent, 100 parts of n-hexane solvent, 200 parts
Stearic acid;
Material is made for high latent heat phase-change material, based on the alumina porous ceramic of the high porosity of preparation by stearic acid
Material is prepared alumina porous ceramic base phase using melting method of impregnation and becomes heat-insulation composite material.
Preferably, average grain diameter≤10um of the alumina ceramic grain.
Preferably, average grain diameter≤10um of the silicon carbide ceramics particle.
Preferably, average grain diameter≤48um of the diatomite.
(3) beneficial technical effect
Compared with prior art, the present invention has following beneficial technical effect:
The present invention is by stearic acid for high latent heat phase-change material, based on the alumina porous ceramic of the high porosity of preparation
Material is made, alumina porous ceramic base phase is prepared using melting method of impregnation and becomes heat-insulation composite material, and the aluminium oxide is more
The infiltration rate of hole ceramic base phase transformation heat-insulation composite material is 51.2~52.4%, volume infiltration rate is 65.6~67.2%, phase transformation
Temperature is 42.5~42.8 DEG C, and the thermal coefficient at 1000 DEG C is 0.068~0.073W/mK;
To solve in current existing thermal protection system, change little situation in integrally-built volume and weight
Under, the technical issues of system heat-insulating capability can not be effectively improved.
Specific embodiment
Stearic acid (CH3(CH2)16COOH), pure, Tianjin Heng Xing chemical reagent manufacturing company is analyzed;
Embodiment one:
(1) preparation of alumina porous ceramic
A. 40g average grain diameter≤10um alumina ceramic grain, 10g average grain diameter≤10um silicon carbide ceramics are weighed
Particle, 30g average grain diameter≤48um diatomite, 6g silica solution, it is spare;The wherein quality of the silica in silica solution point
Number is 25%;
B. the polyethylene glycol hole sealing agent of 10g is dissolved in the n-hexane solvent of 100g, obtains pretreatment fluid;First to step
(a) diatomite in is vacuumized, until being added in above-mentioned pretreatment fluid and being pre-processed after vacuum degree is 5~10Pa
1h is then passed through filtering and drying, obtains pretreated diatomite;
C. by alumina ceramic grain, the silicon carbide ceramics particle ball milling 3h together with 20g dehydrated alcohol in step (a),
Obtain the aluminium oxide ceramics slurry of doped silicon carbide;
D. by the silica solution in step (a), the diatomite in step (b), the aluminium oxide ceramics slurry in step (c) and nothing
Water-ethanol together, under the rate of revolving speed 180rpm, ball milling 3h, later, by drying, hydrostatic profile processing after, in temperature
Heat preservation sintering 2h at 1450 DEG C, is prepared the alumina porous ceramic of doped silicon carbide;
(2) by 200g stearic acid (CH3(CH2)16COOH it) is placed in alumina crucible, is put into baking oven, at 80 DEG C of temperature
Lower thawing;
Later, the alumina porous ceramic of the doped silicon carbide in step (1) is immersed in stearic acid melt, in temperature
1h is kept the temperature at 80 DEG C, later takes out alumina porous ceramic out of stearic acid melt, is removed the adherency melt on surface, is cooled to
Room temperature is prepared alumina porous ceramic base phase and becomes heat-insulation composite material;
(3) become heat-insulation composite material to the alumina porous ceramic base phase prepared in step (2) to be tested for the property, soak
Infiltration rate is 51.2%, volume infiltration rate is 65.6%, phase transition temperature is 42.5 DEG C, and the thermal coefficient at 1000 DEG C is
0.073W/m·K。
Embodiment two:
(1) preparation of alumina porous ceramic
A. 60g average grain diameter≤10um alumina ceramic grain, 30g average grain diameter≤10um silicon carbide ceramics are weighed
Particle, 50g average grain diameter≤48um diatomite, 15g silica solution, it is spare;The wherein quality of the silica in silica solution
Score is 30%;
B. the polyethylene glycol hole sealing agent of 20g is dissolved in the n-hexane solvent of 100g, obtains pretreatment fluid;First to step
(a) diatomite in is vacuumized, until be added in above-mentioned pretreatment fluid after vacuum degree is 10Pa and carry out pretreatment 1h,
It is then passed through filtering and drying, obtains pretreated diatomite;
C. by alumina ceramic grain, the silicon carbide ceramics particle ball milling 5h together with 20g dehydrated alcohol in step (a),
Obtain the aluminium oxide ceramics slurry of doped silicon carbide;
D. by the silica solution in step (a), the diatomite in step (b), the aluminium oxide ceramics slurry in step (c) and nothing
Water-ethanol together, under the rate of revolving speed 300rpm, ball milling 3h, later, by drying, hydrostatic profile processing after, in temperature
Heat preservation sintering 5h at 1600 DEG C, is prepared the alumina porous ceramic of doped silicon carbide;
(2) by 200g stearic acid (CH3(CH2)16COOH it) is placed in alumina crucible, is put into baking oven, at 100 DEG C of temperature
Lower thawing;
Later, the alumina porous ceramic of the doped silicon carbide in step (1) is immersed in stearic acid melt, in temperature
1h is kept the temperature at 100 DEG C, later takes out alumina porous ceramic out of stearic acid melt, removes the adherency melt on surface, it is cooling
To room temperature, alumina porous ceramic base phase is prepared and becomes heat-insulation composite material;
(3) become heat-insulation composite material to the alumina porous ceramic base phase prepared in step (2) to be tested for the property, soak
Infiltration rate is 52.4%, volume infiltration rate is 67.2%, phase transition temperature is 42.8 DEG C, and the thermal coefficient at 1000 DEG C is
0.071W/m·K。
Embodiment three:
(1) preparation of alumina porous ceramic
A. 50g average grain diameter≤10um alumina ceramic grain, 20g average grain diameter≤10um silicon carbide ceramics are weighed
Particle, 40g average grain diameter≤48um diatomite, 12g silica solution, it is spare;The wherein quality of the silica in silica solution
Score is 30%;
B. the polyethylene glycol hole sealing agent of 15g is dissolved in the n-hexane solvent of 100g, obtains pretreatment fluid;First to step
(a) diatomite in is vacuumized, until being added in above-mentioned pretreatment fluid after vacuum degree is 7Pa and carrying out pretreatment 1h, connect
By filtering and dry, obtain pretreated diatomite;
C. by alumina ceramic grain, the silicon carbide ceramics particle ball milling 4h together with 20g dehydrated alcohol in step (a),
Obtain the aluminium oxide ceramics slurry of doped silicon carbide;
D. by the silica solution in step (a), the diatomite in step (b), the aluminium oxide ceramics slurry in step (c) and nothing
Water-ethanol together, under the rate of revolving speed 200rpm, ball milling 3h, later, by drying, hydrostatic profile processing after, in temperature
Heat preservation sintering 4h at 1500 DEG C, is prepared the alumina porous ceramic of doped silicon carbide;
(2) by 200g stearic acid (CH3(CH2)16COOH it) is placed in alumina crucible, is put into baking oven, at 90 DEG C of temperature
Lower thawing;
Later, the alumina porous ceramic of the doped silicon carbide in step (1) is immersed in stearic acid melt, in temperature
1h is kept the temperature at 90 DEG C, later takes out alumina porous ceramic out of stearic acid melt, is removed the adherency melt on surface, is cooled to
Room temperature is prepared alumina porous ceramic base phase and becomes heat-insulation composite material;
(3) become heat-insulation composite material to the alumina porous ceramic base phase prepared in step (2) to be tested for the property, soak
Infiltration rate is 52.4%, volume infiltration rate is 67.1%, phase transition temperature is 42.7 DEG C, and the thermal coefficient at 1000 DEG C is
0.073W/m·K。
Claims (4)
1. a method of porous alumina ceramics base phase becomes heat-insulation composite material, which is characterized in that including following parts by weight proportion
Raw material: 40~60 parts of micron order alumina ceramic grain, 10~30 parts of micron order silicon carbide ceramics particle, 30~50 parts
Micron silicon diatomaceous earth, 6~15 parts of micron silicon colloidal sol, 10~20 parts of polyethylene glycol hole sealing agent, 100 parts of n-hexane are molten
Agent, 200 parts of stearic acid;
Material is made for high latent heat phase-change material, based on the alumina porous ceramic of the high porosity of preparation by stearic acid,
Alumina porous ceramic base phase is prepared using melting method of impregnation and becomes heat-insulation composite material.
2. alumina porous ceramic base phase according to claim 1 becomes heat-insulation composite material, which is characterized in that the oxidation
Average grain diameter≤10um of aluminium ceramic particle.
3. alumina porous ceramic base phase according to claim 1 becomes heat-insulation composite material, which is characterized in that the carbonization
Average grain diameter≤10um of silicon ceramic particle.
4. alumina porous ceramic base phase according to claim 1 becomes heat-insulation composite material, which is characterized in that the diatom
Average grain diameter≤48um of soil.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910650757.8A CN110256103A (en) | 2019-07-18 | 2019-07-18 | One method of porous alumina ceramics base phase becomes heat-insulation composite material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910650757.8A CN110256103A (en) | 2019-07-18 | 2019-07-18 | One method of porous alumina ceramics base phase becomes heat-insulation composite material |
Publications (1)
Publication Number | Publication Date |
---|---|
CN110256103A true CN110256103A (en) | 2019-09-20 |
Family
ID=67927019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910650757.8A Pending CN110256103A (en) | 2019-07-18 | 2019-07-18 | One method of porous alumina ceramics base phase becomes heat-insulation composite material |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN110256103A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114058338A (en) * | 2021-11-19 | 2022-02-18 | 航天特种材料及工艺技术研究所 | Flexible high-temperature phase-change heat-insulation composite material and preparation method thereof |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20120105716A (en) * | 2011-03-16 | 2012-09-26 | 영남대학교 산학협력단 | A method of joining ceramic materials |
CN105837252A (en) * | 2015-07-06 | 2016-08-10 | 深圳市商德先进陶瓷有限公司 | Porous alumina ceramic and preparation method thereof |
CN107011868A (en) * | 2017-03-08 | 2017-08-04 | 北京交通大学 | A kind of paraffin/iron tailings Ceramic Composite phase-changing energy storage material and its melting impregnation preparation method |
CN108531141A (en) * | 2018-06-11 | 2018-09-14 | 哈尔滨工业大学 | A kind of organic matter fills the preparation method of the composite phase-change energy storage material of orderly porous aluminum oxide template |
CN109485365A (en) * | 2018-12-03 | 2019-03-19 | 蓝宇涛 | A kind of insulating foam lightweight ceramic wall material and preparation method thereof |
-
2019
- 2019-07-18 CN CN201910650757.8A patent/CN110256103A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20120105716A (en) * | 2011-03-16 | 2012-09-26 | 영남대학교 산학협력단 | A method of joining ceramic materials |
CN105837252A (en) * | 2015-07-06 | 2016-08-10 | 深圳市商德先进陶瓷有限公司 | Porous alumina ceramic and preparation method thereof |
CN107011868A (en) * | 2017-03-08 | 2017-08-04 | 北京交通大学 | A kind of paraffin/iron tailings Ceramic Composite phase-changing energy storage material and its melting impregnation preparation method |
CN108531141A (en) * | 2018-06-11 | 2018-09-14 | 哈尔滨工业大学 | A kind of organic matter fills the preparation method of the composite phase-change energy storage material of orderly porous aluminum oxide template |
CN109485365A (en) * | 2018-12-03 | 2019-03-19 | 蓝宇涛 | A kind of insulating foam lightweight ceramic wall material and preparation method thereof |
Non-Patent Citations (1)
Title |
---|
李恒德 等: "《现代材料科学与工程辞典》", 31 August 2001, 山东科学技术出版社 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114058338A (en) * | 2021-11-19 | 2022-02-18 | 航天特种材料及工艺技术研究所 | Flexible high-temperature phase-change heat-insulation composite material and preparation method thereof |
CN114058338B (en) * | 2021-11-19 | 2023-04-25 | 航天特种材料及工艺技术研究所 | Flexible high-temperature phase-change heat-insulation composite material and preparation method thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Zhu et al. | Oxidation resistant SiC coating for graphite materials | |
CN106699209B (en) | The preparation method of continuous alumina fiber enhancing alumina ceramic-base composites | |
CN105237044B (en) | Porous fibrous ZrO2TaSi on surface of ceramic heat-insulating material2-SiO2-BSG high-emissivity coating and preparation method thereof | |
CN103449825A (en) | Micro-ablation insulating material and preparation method thereof | |
CN101734910B (en) | Method for preparing porous alumina ceramic core | |
CN104860717B (en) | A kind of preparation method of rigid ceramic thermal insulation tile face coat | |
CN103936464A (en) | Preparation method of HfC-SiC modified carbon/carbon composite material | |
CN103588482B (en) | Manufacture method of high porosity and high strength yttrium-silicon-oxygen porous ceramics | |
SE463513B (en) | COMPOSITION FOR PREPARING A HEAT-INSULATING CERAMIC COATING ON A METAL, PROCEDURE FOR ITS PREPARATION, APPLICATION OF THE SAME AND EXHAUST PIPE PROCEDURED WITH A COATING OF SUCH A COMPOSITION | |
CN115231952B (en) | Rain erosion resistant inorganic coating on surface of quartz fiber reinforced quartz-based composite material and preparation method thereof | |
CN103664213B (en) | The preparation method of the high-temperature wave-transparent composite that a kind of shuffling is fiber reinforced | |
CN104591782A (en) | MoSi2-BSG coated zirconia fiber board integrated heat insulation material and preparation method thereof | |
CN105127373A (en) | Manufacturing method of hollow ceramic core for double-wall hollow blade | |
CN110872490B (en) | Medium-low temperature tubular carbon fiber composite phase change material and preparation method thereof | |
CN106565262A (en) | Preparation method for low-density refractory and antioxidative carbon-ceramic composite material | |
CN105855537A (en) | Inorganic nonmetal cladding high-temperature phase change heat storage microcapsule and preparation method thereof | |
CN105272223B (en) | A kind of preparation method of large scale oxidation zirconium base heat-barrier material | |
CN109251340A (en) | A kind of anti-heat-insulation integrative composite material and preparation method | |
CN110408318A (en) | A kind of phase transformation thermal control coating and preparation method thereof | |
CN110256103A (en) | One method of porous alumina ceramics base phase becomes heat-insulation composite material | |
CN109466130A (en) | A kind of moderate temperature integral structure of resistance to thermal current | |
CN103342547B (en) | Method for preparing high-density fused quartz ceramic | |
CN103265331A (en) | C/SiC/Na2SiO3 antioxidative compound coating suitable for graphite material and preparation method thereof | |
CN106336117B (en) | A kind of preparation method of the waterproof coating of fused quartz ceramic | |
CN108163851A (en) | A kind of application of high-frequency induction heating apparatus, the method for preparing graphite worm and graphite worm |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |