CN108839408B - Corrosion-resistant heat insulation material and preparation method thereof - Google Patents
Corrosion-resistant heat insulation material and preparation method thereof Download PDFInfo
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- CN108839408B CN108839408B CN201810479273.7A CN201810479273A CN108839408B CN 108839408 B CN108839408 B CN 108839408B CN 201810479273 A CN201810479273 A CN 201810479273A CN 108839408 B CN108839408 B CN 108839408B
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- 230000007797 corrosion Effects 0.000 title claims abstract description 33
- 238000005260 corrosion Methods 0.000 title claims abstract description 33
- 239000012774 insulation material Substances 0.000 title abstract description 19
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000010410 layer Substances 0.000 claims abstract description 66
- 239000004964 aerogel Substances 0.000 claims abstract description 60
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 52
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 37
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000011888 foil Substances 0.000 claims abstract description 37
- 239000003063 flame retardant Substances 0.000 claims abstract description 36
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000002131 composite material Substances 0.000 claims abstract description 29
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 claims abstract description 28
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 17
- CTENFNNZBMHDDG-UHFFFAOYSA-N Dopamine hydrochloride Chemical compound Cl.NCCC1=CC=C(O)C(O)=C1 CTENFNNZBMHDDG-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000005058 Isophorone diisocyanate Substances 0.000 claims abstract description 14
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229960001149 dopamine hydrochloride Drugs 0.000 claims abstract description 14
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229940057847 polyethylene glycol 600 Drugs 0.000 claims abstract description 14
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000013638 trimer Substances 0.000 claims abstract description 14
- 239000012790 adhesive layer Substances 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 42
- 239000000843 powder Substances 0.000 claims description 32
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 28
- 239000002904 solvent Substances 0.000 claims description 21
- 239000000243 solution Substances 0.000 claims description 17
- 239000011810 insulating material Substances 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 14
- 239000011259 mixed solution Substances 0.000 claims description 14
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 239000002270 dispersing agent Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 9
- 229920000058 polyacrylate Polymers 0.000 claims description 9
- SMZOGRDCAXLAAR-UHFFFAOYSA-N aluminium isopropoxide Chemical compound [Al+3].CC(C)[O-].CC(C)[O-].CC(C)[O-] SMZOGRDCAXLAAR-UHFFFAOYSA-N 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 238000002309 gasification Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 4
- 229920001690 polydopamine Polymers 0.000 abstract description 4
- 238000006116 polymerization reaction Methods 0.000 abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 239000003513 alkali Substances 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 230000001678 irradiating effect Effects 0.000 description 4
- 230000005587 bubbling Effects 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 239000004965 Silica aerogel Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- YAIQCYZCSGLAAN-UHFFFAOYSA-N [Si+4].[O-2].[Al+3] Chemical compound [Si+4].[O-2].[Al+3] YAIQCYZCSGLAAN-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/0666—Polycondensates containing five-membered rings, condensed with other rings, with nitrogen atoms as the only ring hetero atoms
- C08G73/0672—Polycondensates containing five-membered rings, condensed with other rings, with nitrogen atoms as the only ring hetero atoms with only one nitrogen atom in the ring
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
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- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
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- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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Abstract
The invention aims to provide a corrosion-resistant heat insulation material and a preparation method thereof, wherein the corrosion-resistant heat insulation material comprises a flame-retardant air bubble layer, a flame-retardant adhesive layer, an aluminum foil layer and an aerogel layer; the aerogel layer is prepared from the following components in parts by weight: 5-20 parts of alumina-silicon nitride composite aerogel, 5-20 parts of 98% dopamine hydrochloride, 20-30 parts of propylene oxide, 80-130 parts of acetic acid, 50-70 parts of polyethylene glycol 600, 10-30 parts of formamide, 20-30 parts of toluene diisocyanate trimer and 10-15 parts of isophorone diisocyanate trimer. According to the invention, through self-polymerization of polydopamine and matching of alumina and the surface of the aluminum foil, an aerogel layer with alumina-silicon nitride as a main component is firmly combined on the surface of the aluminum foil, a stable three-dimensional structure can be formed at a high-speed plasma light speed by utilizing the alumina and the silicon nitride, and the corrosion resistance of the material can be improved.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of heat insulation materials, in particular to a nano composite heat insulation material and a preparation method thereof.
[ background of the invention ]
The energy consumed by industrial buildings and maintaining indoor comfortable temperature accounts for more than 30% of the total annual energy consumption in the world, and the use of the heat insulation material can improve the energy utilization rate of the buildings and reduce the energy consumption. However, the thermal conductivity of inorganic heat insulation materials is generally high, the conventional organic heat insulation materials are generally flammable, and the use of organic flame retardants can cause harm to the environment and human health. Therefore, the importance of developing a heat insulating material with good performance in modern buildings is more and more obvious.
The aluminum foil bubble heat insulation material is a good green building heat insulation material, and is generally designed by adopting a structure of a plurality of layers of aluminum foil, air beads and aluminum foil, but the performance of the aluminum foil bubble heat insulation material needs to be further improved. The silicon dioxide aerogel is an amorphous solid with excellent heat insulation performance and extremely high porosity, has a heat conductivity coefficient lower than that of air at normal temperature and normal pressure, has wide application prospect in the field of heat insulation materials, and is one of means for improving the flame retardant performance of the aluminum foil bubble heat insulation material at present. However, the silica aerogel material is an amphoteric substance, and is easily corroded in an environment containing acid, alkali and salt, and the service life of the silica aerogel material in a complex environment such as a factory is seriously influenced. Silicon nitride is an excellent corrosion-resistant material and has wide application in the aspects of high-grade refractory materials, nonferrous metals, chemical building materials, special semiconductors and the like. However, silicon nitride cannot be tightly bonded to the surface of the aluminum foil, and is easily separated and pulverized.
[ summary of the invention ]
The invention aims to provide a corrosion-resistant heat-insulating material, which can improve the corrosion resistance of the material through an aerogel layer taking alumina-silicon nitride as a main component.
The invention also aims to provide a preparation method of the corrosion-resistant heat-insulating material, wherein the aluminum oxide and the silicon nitride can form a stable three-dimensional structure at a high plasma light speed, and the corrosion-resistant aerogel layer containing the silicon nitride component can be tightly combined with the surface of the aluminum foil through self-polymerization of polydopamine and matching of the aluminum oxide and the surface of the aluminum foil.
The technical scheme of the invention is as follows:
the corrosion-resistant heat-insulating material comprises a flame-retardant bubble layer, and is characterized in that one side of the flame-retardant bubble layer is sequentially provided with a flame-retardant adhesive layer, an aluminum foil layer and an aerogel layer; the aerogel layer is prepared from the following components in parts by weight: 5-20 parts of alumina-silicon nitride composite aerogel, 5-20 parts of 98% dopamine hydrochloride, 20-30 parts of propylene oxide, 80-130 parts of acetic acid, 50-70 parts of polyethylene glycol 600, 10-30 parts of formamide, 20-30 parts of toluene diisocyanate trimer and 10-15 parts of isophorone diisocyanate trimer.
Further, the average particle size of the alumina-silicon nitride composite aerogel is 50-70 nm.
Further, the chemical composition of the alumina-silicon nitride composite aerogel is Si6-zAlzOzN8-z(1≤z≤3)。
Further, the aerogel layer is prepared by the following method:
a) dissolving aluminum isopropoxide in ethanol to form a solution A;
b) dissolving an ammonium polyacrylate dispersant in water, adjusting the pH of the system to 9-11, and adding silicon nitride while stirring to form a mixed solution B;
c) dropwise adding the solution A to the mixed solution B, heating and stirring for a period of time at 60-80 ℃, cooling to form gel, performing solvent exchange on the gel with ethanol, and drying at the normal pressure of 150-180 ℃ to obtain dried gel C;
d) treating the dried gel C in a muffle furnace at 450-500 ℃ for 4-6 hours, and crushing to obtain the alumina-silicon nitride composite aerogel;
e) stirring 20-30 parts of propylene oxide, 80-130 parts of acetic acid, 50-70 parts of polyethylene glycol 600 and 10-30 parts of formamide for 5-10 minutes by using a high-speed micro powder stirrer, and adjusting the temperature of a solvent to 5-8 ℃; adding 5-20 parts of alumina-silicon nitride composite aerogel and 5-20 parts of 98% dopamine hydrochloride, adjusting the temperature of the solvent to 30-40 ℃, and continuing to stir for 40-60 minutes; adding 20-30 parts of toluene diisocyanate tripolymer and 10-15 parts of isophorone diisocyanate tripolymer, and continuously stirring for 5-10 minutes; then, air flow classification is carried out, and powder passing through a 8000-mesh filter screen is collected; the rotating speed of the high-speed micro-powder stirring machine is 800-1000 revolutions per minute;
f) and e), after the powder collected in the step e) is subjected to compressed air, filtering and drying, the powder enters a high-temperature gasification chamber with the temperature of 800-.
Further, the ammonium polyacrylate of the step b) has an average relative molecular weight of 4000-6000.
Further, the silicon nitride in the step b) has an average particle diameter of 30 to 50 nm.
Further, the plasma light velocity voltage in the step f) is 1200-1450KV for 2-5 seconds.
The preparation method of the corrosion-resistant heat-insulating material is characterized by comprising the following steps:
a) dissolving aluminum isopropoxide in ethanol to form a solution A;
b) dissolving an ammonium polyacrylate dispersant in water, adjusting the pH of the system to 9-11, and adding silicon nitride while stirring to form a mixed solution B;
c) dropwise adding the solution A to the mixed solution B, heating and stirring for a period of time at 60-80 ℃, cooling to form gel, performing solvent exchange on the gel with ethanol, and drying at the normal pressure of 150-180 ℃ to obtain dried gel C;
d) treating the dried gel C in a muffle furnace at 450-500 ℃ for 4-6 hours, and crushing to obtain the alumina-silicon nitride composite aerogel;
e) stirring 20-30 parts of propylene oxide, 80-130 parts of acetic acid, 50-70 parts of polyethylene glycol 600 and 10-30 parts of formamide for 5-10 minutes by using a high-speed micro powder stirrer, and adjusting the temperature of a solvent to 5-8 ℃; adding 5-20 parts of alumina-silicon nitride composite aerogel and 5-20 parts of 98% dopamine hydrochloride, adjusting the temperature of the solvent to 30-40 ℃, and continuing to stir for 40-60 minutes; adding 20-30 parts of toluene diisocyanate tripolymer and 10-15 parts of isophorone diisocyanate tripolymer, and continuously stirring for 5-10 minutes; then, air flow classification is carried out, and powder passing through a 8000-mesh filter screen is collected; the rotating speed of the high-speed micro-powder stirring machine is 800-1000 revolutions per minute;
f) compressing air, filtering and drying the powder collected in the step e), then entering a high-temperature gasification chamber at the temperature of 800-1000 ℃, forming supersonic airflow through a nozzle, injecting the supersonic airflow onto one side surface of an aluminum foil, and continuously irradiating the side surface by using high-speed plasma light to form an aluminum foil layer with an aerogel layer attached to one side;
g) and uniformly coating the flame-retardant adhesive on the surface of the flame-retardant air bubble layer, then adhering and pressing the flame-retardant adhesive to the surface of one side, which is not adhered with the air-gel layer, of the aluminum foil, wherein the temperature of an adhering roller is 80-100 ℃, the pressure is 100-150 MPa, and curing is carried out for 72-80 hours at 30-45 ℃ after the adhering is finished.
The invention has the following beneficial technical effects:
1) according to the invention, the alumina-silicon nitride-based aerogel layer improves the corrosion resistance of the aluminum foil bubble material, so that the aluminum foil bubble material can meet the heat preservation requirements of acid, alkali and salt-containing factories and other complex environments; 2) the poly-dopamine can enable the aluminum oxide-silicon nitride to be firmly combined with the surface of the aluminum foil, and can greatly improve the bonding strength of the aerogel layer and the aluminum foil layer by combining the combined action of other additives, and the peel strength is tested by using a 3M adhesive tape for 2000 times of continuous testing without dropping micro powder; 3) according to the invention, the aerogel layer is continuously irradiated at a high-speed plasma light speed, so that the growth and curing of internal crystal lattices are completed, the structural stability is higher, and the corrosion resistance is better; 4) the aerogel layer of the invention is still transparent after being continuously irradiated by high-speed plasma light, has little influence on the high reflectivity of the aluminum foil, keeps the comprehensive heat conductivity coefficient of the material at 0.02-0.03W/m.K, and has good heat insulation effect.
[ detailed description ] embodiments
The invention is further described with reference to specific examples.
The following examples are not provided to limit the scope of the present invention, nor are the steps described to limit the order of execution. Modifications of the invention which are obvious to those skilled in the art in view of the prior art are also within the scope of the invention as claimed.
Example 1
The corrosion-resistant heat-insulating material comprises a flame-retardant bubble layer, and is characterized in that one side of the flame-retardant bubble layer is sequentially provided with a flame-retardant adhesive layer, an aluminum foil layer and an aerogel layer; the aerogel layer is prepared from the following components in parts by weight: 10 parts of alumina-silicon nitride composite aerogel, 10 parts of 98% dopamine hydrochloride, 25 parts of propylene oxide, 100 parts of acetic acid, 60 parts of polyethylene glycol 600, 20 parts of formamide, 25 parts of toluene diisocyanate trimer and 12 parts of isophorone diisocyanate trimer.
The preparation method of the corrosion-resistant heat-insulating material comprises the following steps:
a) dissolving aluminum isopropoxide in ethanol to form a solution A;
b) dissolving an ammonium polyacrylate dispersant in water, adjusting the pH value of a system to 10-10.5, adding silicon nitride while stirring to form a mixed solution B, wherein the addition amount of the dispersant is 7% of the mass of the silicon nitride;
c) dropwise adding the solution A into the mixed solution B according to the molar ratio of Al to Si =1 to 1, heating and stirring for a period of time at 60-80 ℃, cooling to form gel, performing solvent exchange on the gel with ethanol, and drying at 150-180 ℃ under normal pressure to obtain dried gel C;
d) treating the dried gel C in a muffle furnace at 450-500 ℃ for 4-6 hours, and crushing to obtain the alumina-silicon nitride composite aerogel; further, the average particle size of the alumina-silicon nitride composite aerogel is 50-70 nm, and the chemical composition of the alumina-silicon nitride composite aerogel is Si5AlON7；
e) Stirring 25 parts of propylene oxide, 100 parts of acetic acid, 60 parts of polyethylene glycol 600 and 20 parts of formamide for 5-10 minutes by using a high-speed micro powder stirrer, and adjusting the temperature of a solvent to 5-8 ℃; adding 10 parts of alumina-silicon nitride composite aerogel and 10 parts of 98% dopamine hydrochloride, adjusting the temperature of the solvent to be 30-40 ℃, and continuously stirring for 40-60 minutes; adding 25 parts of toluene diisocyanate tripolymer and 12 parts of isophorone diisocyanate tripolymer, and continuously stirring for 5-10 minutes; then, air flow classification is carried out, and powder passing through a 8000-mesh filter screen is collected; the rotating speed of the high-speed micro-powder stirring machine is 800-1000 revolutions per minute;
f) compressing air, filtering and drying the powder collected in the step e), then entering a high-temperature gasification chamber at the temperature of 800-1000 ℃, forming supersonic airflow through a nozzle, injecting the supersonic airflow onto one side surface of an aluminum foil, and continuously irradiating the side surface by using high-speed plasma light to form an aluminum foil layer with an aerogel layer attached to one side;
g) and uniformly coating the flame-retardant adhesive on the surface of the flame-retardant air bubble layer, then adhering and pressing the flame-retardant adhesive to the surface of one side, which is not adhered with the air-gel layer, of the aluminum foil, wherein the temperature of an adhering roller is 80-100 ℃, the pressure is 100-150 MPa, and curing is carried out for 72-80 hours at 30-45 ℃ after the adhering is finished.
And (3) performance testing: the obtained heat insulation material is respectively treated at 30 ℃, 5 percent NaOH and 5 percent H2SO4And after the material is soaked in 3.5% NaCl solution for 720h, the aerogel layer exposed outside is intact, and no damage such as bubbling, peeling, cracks and the like occurs, which shows that the material has good alkali resistance, acid resistance and salt water corrosion resistance.
Example 2
The corrosion-resistant heat-insulating material comprises a flame-retardant bubble layer, and is characterized in that one side of the flame-retardant bubble layer is sequentially provided with a flame-retardant adhesive layer, an aluminum foil layer and an aerogel layer; the aerogel layer is prepared from the following components in parts by weight: 5 parts of alumina-silicon nitride composite aerogel, 5 parts of 98% dopamine hydrochloride, 20 parts of propylene oxide, 80 parts of acetic acid, 50 parts of polyethylene glycol 600, 10 parts of formamide, 20 parts of toluene diisocyanate trimer and 10 parts of isophorone diisocyanate trimer.
The preparation method of the corrosion-resistant heat-insulating material comprises the following steps:
a) dissolving aluminum isopropoxide in ethanol to form a solution A;
b) dissolving an ammonium polyacrylate dispersant in water, adjusting the pH value of a system to 9-10, adding silicon nitride while stirring to form a mixed solution B, wherein the addition amount of the dispersant is 5% of the mass of the silicon nitride;
c) dropwise adding the solution A into the mixed solution B according to the molar ratio of Al to Si =1 to 3, heating and stirring for a period of time at 60-80 ℃, cooling to form gel, performing solvent exchange on the gel with ethanol, and drying at 150-180 ℃ under normal pressure to obtain dried gel C;
d) treating the dried gel C in a muffle furnace at 450-500 ℃ for 4-6 hours, and crushing to obtain the alumina-silicon nitride composite aerogel; further, the preparation method of the alumina-silicon nitride composite aerogelThe average particle size is 50-70 nm, and the chemical composition is Si3Al3O3N5；
e) Stirring 20 parts of propylene oxide, 80 parts of acetic acid, 50 parts of polyethylene glycol 600 and 10 parts of formamide for 5-10 minutes by using a high-speed micro powder stirrer, and adjusting the temperature of a solvent to 5-8 ℃; adding 5 parts of alumina-silicon nitride composite aerogel and 5 parts of 98% dopamine hydrochloride, adjusting the temperature of the solvent to be 30-40 ℃, and continuing to stir for 40-60 minutes; adding 20 parts of toluene diisocyanate tripolymer and 10 parts of isophorone diisocyanate tripolymer, and continuously stirring for 5-10 minutes; then, air flow classification is carried out, and powder passing through a 8000-mesh filter screen is collected; the rotating speed of the high-speed micro-powder stirring machine is 800-1000 revolutions per minute;
f) compressing air, filtering and drying the powder collected in the step e), then entering a high-temperature gasification chamber at the temperature of 800-1000 ℃, forming supersonic airflow through a nozzle, injecting the supersonic airflow onto one side surface of an aluminum foil, and continuously irradiating the side surface by using high-speed plasma light to form an aluminum foil layer with an aerogel layer attached to one side;
g) and uniformly coating the flame-retardant adhesive on the surface of the flame-retardant air bubble layer, then adhering and pressing the flame-retardant adhesive to the surface of one side, which is not adhered with the air-gel layer, of the aluminum foil, wherein the temperature of an adhering roller is 80-100 ℃, the pressure is 100-150 MPa, and curing is carried out for 72-80 hours at 30-45 ℃ after the adhering is finished.
And (3) performance testing: the obtained heat insulation material is respectively treated at 30 ℃, 5 percent NaOH and 5 percent H2SO4And after the material is soaked in 3.5% NaCl solution for 720h, the aerogel layer exposed outside is intact, and no damage such as bubbling, peeling, cracks and the like occurs, which shows that the material has good alkali resistance, acid resistance and salt water corrosion resistance.
Example 3
The corrosion-resistant heat-insulating material comprises a flame-retardant bubble layer, and is characterized in that one side of the flame-retardant bubble layer is sequentially provided with a flame-retardant adhesive layer, an aluminum foil layer and an aerogel layer; the aerogel layer is prepared from the following components in parts by weight: 20 parts of alumina-silicon nitride composite aerogel, 20 parts of 98% dopamine hydrochloride, 30 parts of propylene oxide, 130 parts of acetic acid, 70 parts of polyethylene glycol 600, 30 parts of formamide, 30 parts of toluene diisocyanate trimer and 15 parts of isophorone diisocyanate trimer.
The preparation method of the corrosion-resistant heat-insulating material comprises the following steps:
a) dissolving aluminum isopropoxide in ethanol to form a solution A;
b) dissolving an ammonium polyacrylate dispersant in water, adjusting the pH value of a system to 10-11, adding silicon nitride while stirring to form a mixed solution B, wherein the addition amount of the dispersant is 10% of the mass of the silicon nitride;
c) dropwise adding the solution A into the mixed solution B according to the molar ratio of Al to Si =1 to 5, heating and stirring for a period of time at 60-80 ℃, cooling to form gel, performing solvent exchange on the gel with ethanol, and drying at 150-180 ℃ under normal pressure to obtain dried gel C;
d) treating the dried gel C in a muffle furnace at 450-500 ℃ for 4-6 hours, and crushing to obtain the alumina-silicon nitride composite aerogel; further, the average particle size of the alumina-silicon nitride composite aerogel is 50-70 nm, and the chemical composition is SiAl5O5N3；
e) Stirring 30 parts of propylene oxide, 130 parts of acetic acid, 70 parts of polyethylene glycol 600 and 30 parts of formamide for 5-10 minutes by using a high-speed micro powder stirrer, and adjusting the temperature of a solvent to 5-8 ℃; adding 20 parts of alumina-silicon nitride composite aerogel and 20 parts of 98% dopamine hydrochloride, adjusting the temperature of the solvent to be 30-40 ℃, and continuing to stir for 40-60 minutes; adding 30 parts of toluene diisocyanate tripolymer and 15 parts of isophorone diisocyanate tripolymer, and continuously stirring for 5-10 minutes; then, air flow classification is carried out, and powder passing through a 8000-mesh filter screen is collected; the rotating speed of the high-speed micro-powder stirring machine is 800-1000 revolutions per minute;
f) compressing air, filtering and drying the powder collected in the step e), then entering a high-temperature gasification chamber at the temperature of 800-1000 ℃, forming supersonic airflow through a nozzle, injecting the supersonic airflow onto one side surface of an aluminum foil, and continuously irradiating the side surface by using high-speed plasma light to form an aluminum foil layer with an aerogel layer attached to one side;
g) and uniformly coating the flame-retardant adhesive on the surface of the flame-retardant air bubble layer, then adhering and pressing the flame-retardant adhesive to the surface of one side, which is not adhered with the air-gel layer, of the aluminum foil, wherein the temperature of an adhering roller is 80-100 ℃, the pressure is 100-150 MPa, and curing is carried out for 72-80 hours at 30-45 ℃ after the adhering is finished.
And (3) performance testing: the obtained heat insulation material is respectively treated at 30 ℃, 5 percent NaOH and 5 percent H2SO4And after the material is soaked in 3.5% NaCl solution for 720h, the aerogel layer exposed outside is intact, and no damage such as bubbling, peeling, cracks and the like occurs, which shows that the material has good alkali resistance, acid resistance and salt water corrosion resistance.
The invention aims to provide a corrosion-resistant heat insulation material and a preparation method thereof, wherein the corrosion-resistant heat insulation material comprises a flame-retardant air bubble layer, a flame-retardant adhesive layer, an aluminum foil layer and an aerogel layer; the aerogel layer is prepared from the following components in parts by weight: 5-20 parts of alumina-silicon nitride composite aerogel, 5-20 parts of 98% dopamine hydrochloride, 20-30 parts of propylene oxide, 80-130 parts of acetic acid, 50-70 parts of polyethylene glycol 600, 10-30 parts of formamide, 20-30 parts of toluene diisocyanate trimer and 10-15 parts of isophorone diisocyanate trimer. According to the invention, through self-polymerization of polydopamine and matching of alumina and the surface of the aluminum foil, an aerogel layer with alumina-silicon nitride as a main component is firmly combined on the surface of the aluminum foil, a stable three-dimensional structure can be formed at a high-speed plasma light speed by utilizing the alumina and the silicon nitride, and the corrosion resistance of the material can be improved.
Claims (7)
1. The corrosion-resistant heat-insulating material comprises a flame-retardant bubble layer, and is characterized in that one side of the flame-retardant bubble layer is sequentially provided with a flame-retardant adhesive layer, an aluminum foil layer and an aerogel layer; the aerogel layer is prepared from the following components in parts by weight: 5-20 parts of alumina-silicon nitride composite aerogel, 5-20 parts of 98% dopamine hydrochloride, 20-30 parts of propylene oxide, 80-130 parts of acetic acid, 50-70 parts of polyethylene glycol 600, 10-30 parts of formamide, 20-30 parts of toluene diisocyanate trimer and 10-15 parts of isophorone diisocyanate trimer; the chemical composition of the alumina-silicon nitride composite aerogel is Si6-zAlzOzN8-zWherein z is more than or equal to 1 and less than or equal to 3;
the aerogel layer was prepared by the following method: a) dissolving aluminum isopropoxide in ethanol to form a solution A; b) dissolving an ammonium polyacrylate dispersant in water, adjusting the pH of the system to 9-11, and adding silicon nitride while stirring to form a mixed solution B; c) dropwise adding the solution A to the mixed solution B, heating and stirring for a period of time at 60-80 ℃, cooling to form gel, performing solvent exchange on the gel with ethanol, and drying at the normal pressure of 150-180 ℃ to obtain dried gel C; d) treating the dried gel C in a muffle furnace at 450-500 ℃ for 4-6 hours, and crushing to obtain the alumina-silicon nitride composite aerogel; e) stirring 20-30 parts of propylene oxide, 80-130 parts of acetic acid, 50-70 parts of polyethylene glycol 600 and 10-30 parts of formamide for 5-10 minutes by using a high-speed micro powder stirrer, and adjusting the temperature of a solvent to 5-8 ℃; adding 5-20 parts of alumina-silicon nitride composite aerogel and 5-20 parts of 98% dopamine hydrochloride, adjusting the temperature of the solvent to 30-40 ℃, and continuing to stir for 40-60 minutes; adding 20-30 parts of toluene diisocyanate tripolymer and 10-15 parts of isophorone diisocyanate tripolymer, and continuously stirring for 5-10 minutes; then, air flow classification is carried out, and powder passing through a 8000-mesh filter screen is collected; the rotating speed of the high-speed micro-powder stirring machine is 800-1000 revolutions per minute; f) and e), after the powder collected in the step e) is subjected to compressed air, filtering and drying, the powder enters a high-temperature gasification chamber with the temperature of 800-.
2. The corrosion-resistant, heat-insulating and heat-preserving material as claimed in claim 1, wherein the alumina-silicon nitride composite aerogel has an average particle size of 50 to 70 nm.
3. The corrosion-resistant, heat-insulating material as recited in claim 1, wherein the ammonium polyacrylate of step b) has an average relative molecular weight of 4000-6000.
4. The corrosion-resistant, heat-insulating material as claimed in claim 1, wherein the silicon nitride of step b) has an average particle size of 30 to 50 nm.
5. The corrosion-resistant, heat-insulating and heat-preserving material as claimed in claim 1, wherein the light speed voltage of the plasma in step f) is 1200-1450KV for 2-5 seconds.
6. The method of making a corrosion resistant, heat insulating material as claimed in any one of claims 1-2, comprising the steps of: a) dissolving aluminum isopropoxide in ethanol to form a solution A; b) dissolving an ammonium polyacrylate dispersant in water, adjusting the pH of the system to 9-11, and adding silicon nitride while stirring to form a mixed solution B; c) dropwise adding the solution A to the mixed solution B, heating and stirring for a period of time at 60-80 ℃, cooling to form gel, performing solvent exchange on the gel with ethanol, and drying at the normal pressure of 150-180 ℃ to obtain dried gel C; d) treating the dried gel C in a muffle furnace at 450-500 ℃ for 4-6 hours, and crushing to obtain the alumina-silicon nitride composite aerogel; e) stirring 20-30 parts of propylene oxide, 80-130 parts of acetic acid, 50-70 parts of polyethylene glycol 600 and 10-30 parts of formamide for 5-10 minutes by using a high-speed micro powder stirrer, and adjusting the temperature of a solvent to 5-8 ℃; adding 5-20 parts of alumina-silicon nitride composite aerogel and 5-20 parts of 98% dopamine hydrochloride, adjusting the temperature of the solvent to 30-40 ℃, and continuing to stir for 40-60 minutes; adding 20-30 parts of toluene diisocyanate tripolymer and 10-15 parts of isophorone diisocyanate tripolymer, and continuously stirring for 5-10 minutes; then, air flow classification is carried out, and powder passing through a 8000-mesh filter screen is collected; the rotating speed of the high-speed micro-powder stirring machine is 800-1000 revolutions per minute; f) and e), after the powder collected in the step e) is subjected to compressed air, filtering and drying, the powder enters a high-temperature gasification chamber with the temperature of 800-.
7. The method for preparing a corrosion-resistant, heat-insulating material according to claim 6, further comprising the steps of: g) and uniformly coating the flame-retardant adhesive on the surface of the flame-retardant air bubble layer, then adhering and pressing the flame-retardant adhesive to the surface of one side, which is not adhered with the air-gel layer, of the aluminum foil, wherein the temperature of an adhering roller is 80-100 ℃, the pressure is 100-150 MPa, and curing is carried out for 72-80 hours at 30-45 ℃ after the adhering is finished.
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