CN111844962A - Ceramic fiber reinforced aerogel felt and preparation method thereof - Google Patents
Ceramic fiber reinforced aerogel felt and preparation method thereof Download PDFInfo
- Publication number
- CN111844962A CN111844962A CN202010665643.3A CN202010665643A CN111844962A CN 111844962 A CN111844962 A CN 111844962A CN 202010665643 A CN202010665643 A CN 202010665643A CN 111844962 A CN111844962 A CN 111844962A
- Authority
- CN
- China
- Prior art keywords
- felt
- ceramic fiber
- fiber
- fiber reinforced
- water
- 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.)
- Granted
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 153
- 239000004964 aerogel Substances 0.000 title claims abstract description 75
- 239000000919 ceramic Substances 0.000 title claims abstract description 69
- 238000002360 preparation method Methods 0.000 title abstract description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000003365 glass fiber Substances 0.000 claims abstract description 39
- 239000004744 fabric Substances 0.000 claims abstract description 35
- 239000000843 powder Substances 0.000 claims abstract description 28
- 239000002002 slurry Substances 0.000 claims abstract description 27
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 23
- 239000004831 Hot glue Substances 0.000 claims abstract description 22
- 238000007598 dipping method Methods 0.000 claims abstract description 21
- 238000003756 stirring Methods 0.000 claims abstract description 18
- 235000019441 ethanol Nutrition 0.000 claims abstract description 17
- 238000000465 moulding Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 14
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 13
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 13
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 13
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims abstract description 9
- 238000000576 coating method Methods 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 9
- 238000010030 laminating Methods 0.000 claims abstract description 9
- 239000002904 solvent Substances 0.000 claims abstract description 5
- 239000002131 composite material Substances 0.000 claims description 16
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 10
- 239000010453 quartz Substances 0.000 claims description 10
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 claims description 10
- 230000032683 aging Effects 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 8
- 230000001680 brushing effect Effects 0.000 claims description 8
- 229920002748 Basalt fiber Polymers 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- LDDQLRUQCUTJBB-UHFFFAOYSA-N ammonium fluoride Chemical compound [NH4+].[F-] LDDQLRUQCUTJBB-UHFFFAOYSA-N 0.000 claims description 6
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 6
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 claims description 6
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 6
- 229910052863 mullite Inorganic materials 0.000 claims description 6
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- -1 orthosilicate ester Chemical class 0.000 claims description 4
- 238000007731 hot pressing Methods 0.000 claims description 2
- IWICDTXLJDCAMR-UHFFFAOYSA-N trihydroxy(propan-2-yloxy)silane Chemical compound CC(C)O[Si](O)(O)O IWICDTXLJDCAMR-UHFFFAOYSA-N 0.000 claims description 2
- 239000010410 layer Substances 0.000 abstract description 9
- 229920006223 adhesive resin Polymers 0.000 abstract description 3
- 239000011229 interlayer Substances 0.000 abstract description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 12
- 238000009413 insulation Methods 0.000 description 5
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 5
- 239000004965 Silica aerogel Substances 0.000 description 4
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
-
- 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
-
- 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
-
- 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
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
-
- 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
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
- B32B2037/243—Coating
-
- 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
- B32B2255/00—Coating on the layer surface
- B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
-
- 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
- B32B2255/00—Coating on the layer surface
- B32B2255/20—Inorganic coating
-
- 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
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
-
- 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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
- B32B2260/023—Two or more layers
-
- 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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
-
- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/105—Ceramic fibres
-
- 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
- B32B2266/00—Composition of foam
- B32B2266/12—Gel
- B32B2266/126—Aerogel, i.e. a supercritically dried gel
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Laminated Bodies (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses a preparation method of a ceramic fiber reinforced aerogel felt, which comprises the steps of uniformly mixing orthosilicate, ethanol and water, and then sequentially adding NH4Uniformly stirring the solution F and ammonia water to obtain silicon dioxide sol; mixing hot melt adhesive powder with ceramicDispersing the fibers in water, and uniformly stirring and mixing to obtain viscous slurry; and (3) coating the viscous slurry on glass fiber cloth, laminating, performing hot press molding, dipping in silica sol, then placing in absolute ethyl alcohol for solvent replacement, removing moisture, and drying to obtain the prepared ceramic fiber reinforced aerogel felt. According to the invention, the ceramic fiber is pressed into the felt through the hot melt adhesive resin powder, so that the ceramic fiber felt layer has certain flexibility, and meanwhile, the glass fiber cloth of the interlayer can improve the enhanced tensile property of the fiber felt, thereby solving the problem of brittleness of the traditional ceramic fiber felt. The invention can keep the structural integrity of the felt body in the process of gum dipping, is convenient for gum dipping operation, and ensures the heat-insulating property of the ceramic fiber reinforced aerogel felt body.
Description
Technical Field
The invention belongs to the technical field of aerogel felt preparation, and particularly relates to a ceramic fiber reinforced aerogel felt and a preparation method thereof.
Background
The silica aerogel is a continuous three-dimensional network structure formed by mutually polymerizing nano-scale particles, and the thermal conductivity efficiency, the convection heat transfer efficiency and the radiation heat transfer efficiency of the silica aerogel are effectively limited due to the special nano-scale micropores and a skeleton structure, so that the silica aerogel has very low thermal conductivity coefficient and is a solid material with the lowest thermal conductivity coefficient in the world at present. The material composition is inorganic matter, belongs to A-grade non-combustible material, and can replace the application of the existing organic heat-insulating material in the heat-insulating system of the industrial building. However, pure aerogel has low mechanical strength and poor toughness, which leads to poor dimensional stability of aerogel material, and limits its operability and application in construction. In order to solve the problems, fiber-reinforced aerogel blankets, such as ceramic fiber blankets, glass fiber blankets, rock wool fiber blankets, and the like, are frequently used in the production at present. Due to the good mechanical flexibility of the glass fiber mat, the glass fiber mat is widely concerned and used in the fields of production, heat insulation and heat preservation. However, the temperature resistance of the glass fiber reinforced aerogel can only reach 600 ℃ at most, and the requirements of the high-temperature technical field on the heat insulation performance cannot be met.
In view of the good high temperature resistance of the ceramic fiber, the ceramic fiber reinforced silica aerogel felt has attracted attention in the high temperature field. However, due to the defects of poor tensile property and poor rebound resilience of the ceramic fibers, the fibers are easy to break in the impregnation process of the fiber felt, and the heat insulation performance of the felt body is further influenced. In order to further overcome the problem that the ceramic fiber felt is poor in tensile strength and rebound resilience in practical application, the invention aims to design the ceramic fiber felt body so as to enhance the mechanical flexibility of the ceramic fiber felt body, thereby ensuring the performance stability of the fiber reinforced aerogel felt in the production and application processes.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: overcomes the defects in the prior art and provides a ceramic fiber reinforced aerogel felt and a preparation method thereof.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the ceramic fiber reinforced aerogel felt comprises a composite reinforced fiber felt body and aerogel, wherein the composite reinforced fiber felt body is obtained by coating ceramic fiber slurry on glass fiber cloth, laminating and performing hot press molding; the aerogel is silicon dioxide aerogel.
The preparation method of the ceramic fiber reinforced aerogel felt is characterized by comprising the following specific steps of:
(1) mixing orthosilicate ester, ethanol and water uniformly, and then adding NH in sequence4Uniformly stirring the solution F and ammonia water to obtain silica sol A; wherein, in terms of mole ratio, orthosilicate: ethanol: water = 1: (4-12): (2-4); NH (NH)4The amount of solution F added is in terms of mole ratio, NH4F: orthosilicate = (0.002 to 0.01): 1; the addition of ammonia water ensures that NH is calculated by molar ratio3Orthosilicate = (0.005-0.015): 1;
(2) dispersing the hot melt adhesive powder and the ceramic fibers in water, and uniformly stirring and mixing to obtain viscous slurry B; wherein, by mass ratio, the hot melt adhesive powder: ceramic fiber: water = (0.5-1.5): (0.1-0.5): 1;
(3) laying glass fiber cloth C flatly, brushing the viscous slurry B obtained in the step (2) on the surface of the glass fiber cloth C, continuously laying a layer of glass fiber cloth C, and sequentially laying according to the sequence of C-B-C-.... multidot.C to obtain a fiber felt laminated body with the required thickness;
(4) carrying out hot press molding on the fiber felt laminated body obtained in the step (3) to obtain a reinforced fiber felt D;
(5) Dipping the reinforced fiber felt D obtained in the step (4) in the silica sol A obtained in the step (1), and standing and aging at 30-60 ℃ for 8-24 h after dipping;
(6) placing the fibrofelt-gel complex obtained in the step (5) in absolute ethyl alcohol for multiple solvent replacement, and removing redundant water in the fibrofelt-gel complex;
(7) and (4) drying the felt body obtained in the step (6) to obtain the prepared ceramic fiber reinforced aerogel felt.
Preferably, in the step (1), the orthosilicate is one of ethyl orthosilicate, methyl orthosilicate and isopropyl orthosilicate.
Preferably, in the step (2), the hot melt adhesive powder is one or more of ethylene-vinyl acetate copolymer powder, ethylene-acrylic acid copolymer powder or polyvinyl alcohol powder.
Preferably, in the step (2), the ceramic fiber is one of alumina silicate fiber, mullite fiber, quartz fiber, alumina fiber and basalt fiber.
Preferably, in the step (2), the length of the ceramic fiber is 20 to 100 μm.
Preferably, in the step (3), the thickness of the thick paste B is 0.2-1 mm.
Preferably, in the step (4), the hot pressing temperature is 80-120 ℃ and the pressure is 0.2-1 MPa.
Preferably, in the step (5), the gum dipping time is 12-24 h.
Preferably, in the step (6), the number of times of solvent replacement is 2-3, and the time of each replacement is 12-36 h.
The invention has the following positive beneficial effects:
the invention provides a preparation method of a ceramic fiber reinforced aerogel felt, which comprises the steps of pressing ceramic fibers into the felt through hot melt adhesive resin powder, carrying out sol-gel reaction to obtain an aerogel felt body, wherein the hot melt adhesive resin powder can play a role in bonding the ceramic fiber felt, so that a ceramic fiber felt layer has certain flexibility, and meanwhile, the glass fiber cloth of an interlayer can well improve the reinforced tensile property of the fiber felt, and the brittleness of the traditional ceramic fiber felt is solved.
The reinforced fiber felt can keep the structural integrity of the felt body in the impregnation process, improves the operation convenience degree of the impregnation process and ensures the heat insulation performance of the ceramic fiber reinforced aerogel felt body.
The invention has simple process operation and improves the defects of poor tensile property and poor rebound resilience of the ceramic fiber. The prepared ceramic fiber reinforced aerogel felt has certain flexibility, the application range of the ceramic fiber reinforced aerogel felt in the field of heat insulation and preservation is expanded, and the use requirements of the ceramic fiber reinforced aerogel felt in different high-temperature structure fields are met.
Detailed Description
The technical solutions of the present invention will be further described in detail and clearly in the following with reference to specific examples, but the scope of the present invention is not limited thereto.
Example 1
A ceramic fiber reinforced aerogel felt comprises a composite reinforced fiber felt body and aerogel, wherein the composite reinforced fiber felt body is obtained by coating aluminum silicate fiber slurry on glass fiber cloth, laminating and performing hot press molding; the aerogel is silicon dioxide aerogel.
The preparation method of the ceramic fiber reinforced aerogel felt comprises the following specific steps:
(1) taking ethyl orthosilicate, ethanol and water to be uniformly mixed, and then sequentially adding NH4Uniformly stirring the solution F and ammonia water to obtain silica sol A; wherein the content of the first and second substances,in terms of mole ratios, ethyl orthosilicate: ethanol: water = 1: 9: 2; NH (NH)4The amount of solution F added is in terms of mole ratio, NH4F: ethyl orthosilicate = 0.008: 1; the addition of ammonia water ensures that NH is calculated by molar ratio3: ethyl orthosilicate = 0.012: 1;
(2) dispersing the hot melt adhesive powder ethylene-vinyl acetate copolymer and aluminum silicate fibers in water, and stirring and mixing uniformly to obtain viscous slurry B; wherein, the hot melt adhesive powder ethylene-vinyl acetate copolymer comprises the following components in percentage by mass: aluminum silicate fiber: water = 0.9: 0.3: 1, the length of the aluminum silicate fiber is 30 mu m;
(3) Laying glass fiber cloth C flatly, brushing the viscous slurry B obtained in the step (2) on the surface of the glass fiber cloth, continuously laying a layer of glass fiber cloth C, and sequentially laying according to the sequence of C-B-C-.... multidot.C to obtain a fiber laminate with the required thickness;
(4) carrying out hot press molding on the fiber laminated body obtained in the step (3) at 100 ℃ and 0.2Mpa to obtain a reinforced fiber felt D;
(5) dipping the reinforced fiber felt D obtained in the step (4) in the silicon dioxide sol A obtained in the step (1) for 16h, and standing and aging at 50 ℃ for 18 h after dipping;
(6) placing the fibrofelt-gel complex obtained in the step (5) in absolute ethyl alcohol for replacement for 2 times, wherein the replacement time is 24 hours each time, and removing redundant water in the fibrofelt-gel complex;
(7) and (4) drying the felt body obtained in the step (6) to obtain the prepared ceramic fiber reinforced aerogel felt.
Example 2
A ceramic fiber reinforced aerogel felt comprises a composite reinforced fiber felt body and aerogel, wherein the composite reinforced fiber felt body is obtained by coating mullite fiber slurry on glass fiber cloth, laminating and carrying out hot press molding; the aerogel is silicon dioxide aerogel.
The preparation method of the ceramic fiber reinforced aerogel felt comprises the following specific steps:
(1) Taking methyl orthosilicate, ethanol and water to be uniformly mixed, and then sequentially adding NH4Uniformly stirring the solution F and ammonia water to obtain silica sol A; wherein, in terms of mole ratio, methyl orthosilicate: ethanol: water = 1: 10: 4; NH (NH)4The amount of solution F added is in terms of mole ratio, NH4F: methyl orthosilicate = 0.004: 1; the amount of ammonia added is in terms of molar ratio, NH3: methyl orthosilicate = 0.006: 1;
(2) dispersing the hot melt adhesive powder ethylene-acrylic acid copolymer and mullite fiber in water, and uniformly stirring and mixing to obtain viscous slurry B; wherein, the hot melt adhesive powder ethylene-acrylic acid copolymer comprises the following components in percentage by mass: mullite fiber: water = 1.2: 0.4: 1, the length of the mullite fiber is 50 mu m;
(3) laying glass fiber cloth C flatly, brushing the viscous slurry B obtained in the step (2) on the surface of the glass fiber cloth C, continuously laying a layer of glass fiber cloth C, and sequentially laying according to the sequence of C-B-C-.... multidot.C to obtain a fiber laminate with the required thickness;
(4) carrying out hot press molding on the fiber laminated body obtained in the step (3) at 110 ℃ and 0.5Mpa to obtain a reinforced fiber felt D;
(5) dipping the reinforced fiber felt D obtained in the step (4) in the silica sol A obtained in the step (1) for 24 hours, and standing and aging at 30 ℃ for 24 hours after dipping;
(6) Placing the fibrofelt-gel complex obtained in the step (5) in absolute ethyl alcohol for replacement for 2 times, wherein the replacement time is 20 hours each time, and removing redundant water in the fibrofelt-gel complex;
(7) and (4) drying the felt body obtained in the step (6) to obtain the prepared ceramic fiber reinforced aerogel felt.
Example 3
A ceramic fiber reinforced aerogel felt comprises a composite reinforced fiber felt body and aerogel, wherein the composite reinforced fiber felt body is obtained by coating quartz fiber slurry on glass fiber cloth, laminating and performing hot press molding; the aerogel is silicon dioxide aerogel.
The preparation method of the ceramic fiber reinforced aerogel felt comprises the following specific steps:
(1) taking siliconIsopropyl ester, ethanol and water are mixed evenly, and then NH is added in turn4Uniformly stirring the solution F and ammonia water to obtain silica sol A; wherein, in terms of mole ratio, isopropyl n-silicate: ethanol: water = 1: 8: 3; NH (NH)4The amount of solution F added is in terms of mole ratio, NH4Isopropyl n-silicate = 0.006: 1; the amount of ammonia added is in terms of molar ratio, NH3: isopropyl n-silicate = 0.01: 1;
(2) dispersing the hot melt adhesive powder polyvinyl alcohol and quartz fibers in water, and uniformly stirring and mixing to obtain viscous slurry B; wherein, by mass ratio, the hot melt adhesive powder polyvinyl alcohol: quartz fiber: water = 0.6: 0.2: 1, the length of the quartz fiber is 60 mu m;
(3) Laying glass fiber cloth C flatly, brushing the viscous slurry B obtained in the step (2) on the surface of the glass fiber cloth, continuously laying a layer of glass fiber cloth C, and sequentially laying according to the sequence of C-B-C-.... multidot.C to obtain a fiber laminate with the required thickness;
(4) carrying out hot press molding on the fiber laminated body obtained in the step (3) at 120 ℃ and 0.2Mpa to obtain a reinforced fiber felt D;
(5) dipping the reinforced fiber felt D obtained in the step (4) in the silicon dioxide sol A obtained in the step (1) for 20h, and standing and aging at 40 ℃ for 16h after dipping;
(6) placing the fibrofelt-gel complex obtained in the step (5) into absolute ethyl alcohol for replacement for 3 times, wherein the replacement time is 16h each time, and removing redundant water in the fibrofelt-gel complex;
(7) and (4) drying the felt body obtained in the step (6) to obtain the prepared ceramic fiber reinforced aerogel felt.
Example 4
A ceramic fiber reinforced aerogel felt comprises a composite reinforced fiber felt body and aerogel, wherein the composite reinforced fiber felt body is obtained by coating alumina fiber slurry on glass fiber cloth, laminating and performing hot press molding; the aerogel is silicon dioxide aerogel.
The preparation method of the ceramic fiber reinforced aerogel felt comprises the following specific steps:
(1) Taking ethyl orthosilicate, ethanol and water to be uniformly mixed, and then sequentially adding NH4Uniformly stirring the solution F and ammonia water to obtain silica sol A; wherein, in terms of molar ratio, ethyl orthosilicate: ethanol: water = 1: 4: 2; NH (NH)4The amount of solution F added is in terms of mole ratio, NH4F: ethyl orthosilicate = 0.002: 1; the addition of ammonia water ensures that NH is calculated by molar ratio3: ethyl orthosilicate = 0.005: 1;
(2) dispersing the hot melt adhesive powder ethylene-vinyl acetate copolymer and alumina fiber in water, and stirring and mixing uniformly to obtain viscous slurry B; wherein, the hot melt adhesive powder ethylene-vinyl acetate copolymer comprises the following components in percentage by mass: alumina fiber: water = 0.5: 0.1: 1, the length of the alumina fiber is 40 μm;
(3) laying glass fiber cloth C flatly, brushing the viscous slurry B obtained in the step (2) on the surface of the glass fiber cloth, continuously laying a layer of glass fiber cloth C, and sequentially laying according to the sequence of C-B-C-.... multidot.C to obtain a fiber laminate with the required thickness;
(4) carrying out hot press molding on the fiber laminated body obtained in the step (3) at 80 ℃ and 0.3Mpa to obtain a reinforced fiber felt D;
(5) dipping the reinforced fiber felt D obtained in the step (4) in the silicon dioxide sol A obtained in the step (1) for 15h, and standing and aging at 40 ℃ for 10 h after dipping;
(6) Placing the fibrofelt-gel complex obtained in the step (5) in absolute ethyl alcohol for replacement for 2 times, wherein the replacement time is 15h each time, and removing redundant water in the fibrofelt-gel complex;
(7) and (4) drying the felt body obtained in the step (6) to obtain the prepared ceramic fiber reinforced aerogel felt.
Example 5
A ceramic fiber reinforced aerogel felt comprises a composite reinforced fiber felt body and aerogel, wherein the composite reinforced fiber felt body is obtained by coating basalt fiber slurry on glass fiber cloth, laminating and hot-press molding; the aerogel is silicon dioxide aerogel.
The preparation method of the ceramic fiber reinforced aerogel felt comprises the following specific steps:
(1) taking methyl orthosilicate, ethanol and water to be uniformly mixed, and then sequentially adding NH4Uniformly stirring the solution F and ammonia water to obtain silica sol A; wherein, in terms of mole ratio, methyl orthosilicate: ethanol: water = 1: 12: 4; NH (NH)4The amount of solution F added is in terms of mole ratio, NH4F: methyl orthosilicate = 0.01: 1; the amount of ammonia added is in terms of molar ratio, NH3: methyl orthosilicate = 0.015: 1;
(2) dispersing the hot melt adhesive powder ethylene-acrylic acid copolymer and basalt fiber in water, and uniformly stirring and mixing to obtain viscous slurry B; wherein, the hot melt adhesive powder ethylene-acrylic acid copolymer comprises the following components in percentage by mass: basalt fiber: water = 1.4: 0.3: 1, the length of the basalt fiber is 60 mu m;
(3) Laying glass fiber cloth C flatly, brushing the viscous slurry B obtained in the step (2) on the surface of the glass fiber cloth C, continuously laying a layer of glass fiber cloth C, and sequentially laying according to the sequence of C-B-C-.... multidot.C to obtain a fiber laminate with the required thickness;
(4) carrying out hot press molding on the fiber laminated body obtained in the step (3) at 100 ℃ and 0.8Mpa to obtain a reinforced fiber felt D;
(5) dipping the reinforced fiber felt D obtained in the step (4) in the silica sol A obtained in the step (1) for 22h, and standing and aging at 60 ℃ for 12 h after dipping;
(6) placing the fibrofelt-gel complex obtained in the step (5) in absolute ethyl alcohol for replacement for 3 times, wherein the replacement time is 15h each time, and removing redundant water in the fibrofelt-gel complex;
(7) and (4) drying the felt body obtained in the step (6) to obtain the prepared ceramic fiber reinforced aerogel felt.
Example 6
A ceramic fiber reinforced aerogel felt comprises a composite reinforced fiber felt body and aerogel, wherein the composite reinforced fiber felt body is obtained by coating quartz fiber slurry on glass fiber cloth, laminating and performing hot press molding; the aerogel is silicon dioxide aerogel.
The preparation method of the ceramic fiber reinforced aerogel felt comprises the following specific steps:
(1) Taking isopropyl n-silicate, ethanol and water, mixing uniformly, and then adding NH in sequence4Uniformly stirring the solution F and ammonia water to obtain silica sol A; wherein, in terms of mole ratio, isopropyl n-silicate: ethanol: water = 1: 9: 3; NH (NH)4The amount of solution F added is in terms of mole ratio, NH4Isopropyl n-silicate = 0.007: 1; the amount of ammonia added is in terms of molar ratio, NH3: isopropyl n-silicate = 0.011: 1;
(2) dispersing the hot melt adhesive powder polyvinyl alcohol and quartz fibers in water, and uniformly stirring and mixing to obtain viscous slurry B; wherein, by mass ratio, the hot melt adhesive powder polyvinyl alcohol: quartz fiber: water = 0.9: 0.4: 1, the length of the quartz fiber is 70 μm;
(3) laying glass fiber cloth C flatly, brushing the viscous slurry B obtained in the step (2) on the surface of the glass fiber cloth, continuously laying a layer of glass fiber cloth C, and sequentially laying according to the sequence of C-B-C-.... multidot.C to obtain a fiber laminate with the required thickness;
(4) carrying out hot press molding on the fiber laminated body obtained in the step (3) at 120 ℃ and 0.4Mpa to obtain a reinforced fiber felt D;
(5) dipping the reinforced fiber felt D obtained in the step (4) in the silicon dioxide sol A obtained in the step (1) for 18h, and standing and aging at 55 ℃ for 10h after dipping;
(6) Placing the fibrofelt-gel complex obtained in the step (5) in absolute ethyl alcohol for replacement for 2 times, wherein the replacement time is 22h each time, and removing redundant water in the fibrofelt-gel complex;
(7) and (4) drying the felt body obtained in the step (6) to obtain the prepared ceramic fiber reinforced aerogel felt.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A ceramic fiber reinforced aerogel blanket characterized in that: the ceramic fiber reinforced aerogel felt comprises a composite reinforced fiber felt body and aerogel, wherein the composite reinforced fiber felt body is obtained by coating ceramic fiber slurry on glass fiber cloth, laminating and performing hot press molding; the aerogel is silicon dioxide aerogel.
2. The method of preparing a ceramic fiber reinforced aerogel blanket of claim 1, comprising the specific steps of:
(1) mixing orthosilicate ester, ethanol and water uniformly, and then adding NH in sequence 4Uniformly stirring the solution F and ammonia water to obtain silica sol A; wherein, in terms of mole ratio, orthosilicate: ethanol: water = 1: (4-12): (2-4); NH (NH)4The amount of solution F added is in terms of mole ratio, NH4F: orthosilicate = (0.002 to 0.01): 1; the addition of ammonia water ensures that NH is calculated by molar ratio3Orthosilicate = (0.005-0.015): 1;
(2) dispersing the hot melt adhesive powder and the ceramic fibers in water, and uniformly stirring and mixing to obtain viscous slurry B; wherein, by mass ratio, the hot melt adhesive powder: ceramic fiber: water = (0.5-1.5): (0.1-0.5): 1;
(3) laying glass fiber cloth C flatly, brushing the viscous slurry B obtained in the step (2) on the surface of the glass fiber cloth C, continuously laying a layer of glass fiber cloth C, and sequentially laying according to the sequence of C-B-C-.... multidot.C to obtain a fiber felt laminated body with the required thickness;
(4) carrying out hot press molding on the fiber felt laminated body obtained in the step (3) to obtain a reinforced fiber felt D;
(5) dipping the reinforced fiber felt D obtained in the step (4) in the silica sol A obtained in the step (1), and standing and aging at 30-60 ℃ for 8-24 h after dipping;
(6) placing the fibrofelt-gel complex obtained in the step (5) in absolute ethyl alcohol for multiple solvent replacement, and removing redundant water in the fibrofelt-gel complex;
(7) And (4) drying the felt body obtained in the step (6) to obtain the prepared ceramic fiber reinforced aerogel felt.
3. The method of preparing a ceramic fiber reinforced aerogel blanket according to claim 2, wherein in step (1), the orthosilicate is one of ethyl orthosilicate, methyl orthosilicate, and isopropyl orthosilicate.
4. The method of claim 2, wherein in step (2), the hot melt adhesive powder is one or more of ethylene-vinyl acetate copolymer powder, ethylene-acrylic acid copolymer powder, or polyvinyl alcohol powder.
5. The method of preparing a ceramic fiber reinforced aerogel blanket according to claim 2, wherein in step (2), the ceramic fibers are one of alumina silicate fibers, mullite fibers, quartz fibers, alumina fibers, basalt fibers.
6. The method of preparing a ceramic fiber reinforced aerogel blanket according to claim 2, wherein in step (2), the length of the ceramic fiber is 20 to 100 μm.
7. The method for preparing the ceramic fiber reinforced aerogel felt according to claim 2, wherein in the step (3), the thickness of the thick slurry B applied is 0.2-1 mm.
8. The method for preparing the ceramic fiber reinforced aerogel felt according to claim 2, wherein in the step (4), the hot pressing temperature is 80-120 ℃ and the pressure is 0.2-1 MPa.
9. The method for preparing the ceramic fiber reinforced aerogel felt according to claim 2, wherein in the step (5), the dipping time is 12-24 h.
10. The method for preparing the ceramic fiber reinforced aerogel felt according to claim 2, wherein in the step (6), the number of times of solvent replacement is 2-3 times, and the time of each replacement is 12-36 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010665643.3A CN111844962B (en) | 2020-07-11 | 2020-07-11 | Ceramic fiber reinforced aerogel felt and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010665643.3A CN111844962B (en) | 2020-07-11 | 2020-07-11 | Ceramic fiber reinforced aerogel felt and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111844962A true CN111844962A (en) | 2020-10-30 |
| CN111844962B CN111844962B (en) | 2023-12-01 |
Family
ID=72982882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010665643.3A Active CN111844962B (en) | 2020-07-11 | 2020-07-11 | Ceramic fiber reinforced aerogel felt and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111844962B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113510978A (en) * | 2021-04-26 | 2021-10-19 | 杭州本创科技有限公司 | Aerogel anticorrosion heat-insulation flexible plate and manufacturing method thereof |
| CN114804818A (en) * | 2022-05-24 | 2022-07-29 | 巩义市泛锐熠辉复合材料有限公司 | Low-cost aerogel composite material and preparation method thereof |
| CN115302885A (en) * | 2022-08-10 | 2022-11-08 | 江门建滔积层板有限公司 | High-heat-resistance high-thermal-conductivity copper-clad plate and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478394A (en) * | 2014-11-24 | 2015-04-01 | 天津大学 | Preparation method of fiber felt enhanced silica aerogel composite panel |
| CN210026533U (en) * | 2019-05-08 | 2020-02-07 | 航天海鹰(镇江)特种材料有限公司 | Composite aerogel heat insulation blanket |
| CN110922095A (en) * | 2019-11-07 | 2020-03-27 | 巩义市泛锐熠辉复合材料有限公司 | Preparation method of composite silica aerogel felt |
| CN110978737A (en) * | 2019-11-07 | 2020-04-10 | 巩义市泛锐熠辉复合材料有限公司 | Preparation method of powder falling prevention composite silica aerogel felt |
-
2020
- 2020-07-11 CN CN202010665643.3A patent/CN111844962B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478394A (en) * | 2014-11-24 | 2015-04-01 | 天津大学 | Preparation method of fiber felt enhanced silica aerogel composite panel |
| CN210026533U (en) * | 2019-05-08 | 2020-02-07 | 航天海鹰(镇江)特种材料有限公司 | Composite aerogel heat insulation blanket |
| CN110922095A (en) * | 2019-11-07 | 2020-03-27 | 巩义市泛锐熠辉复合材料有限公司 | Preparation method of composite silica aerogel felt |
| CN110978737A (en) * | 2019-11-07 | 2020-04-10 | 巩义市泛锐熠辉复合材料有限公司 | Preparation method of powder falling prevention composite silica aerogel felt |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113510978A (en) * | 2021-04-26 | 2021-10-19 | 杭州本创科技有限公司 | Aerogel anticorrosion heat-insulation flexible plate and manufacturing method thereof |
| CN114804818A (en) * | 2022-05-24 | 2022-07-29 | 巩义市泛锐熠辉复合材料有限公司 | Low-cost aerogel composite material and preparation method thereof |
| CN114804818B (en) * | 2022-05-24 | 2023-04-11 | 巩义市泛锐熠辉复合材料有限公司 | Low-cost aerogel composite material and preparation method thereof |
| CN115302885A (en) * | 2022-08-10 | 2022-11-08 | 江门建滔积层板有限公司 | High-heat-resistance high-thermal-conductivity copper-clad plate and preparation method thereof |
| CN115302885B (en) * | 2022-08-10 | 2023-12-19 | 江门建滔积层板有限公司 | High-heat-resistance high-heat-conductivity copper-clad plate and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111844962B (en) | 2023-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111844962A (en) | Ceramic fiber reinforced aerogel felt and preparation method thereof | |
| CN111823681B (en) | Heat-insulation composite board and preparation method thereof | |
| CN101698592B (en) | Silicon-aluminium aerogel composite material and manufacturing method thereof | |
| CN105481305B (en) | A kind of method of high-performance multi-layer thin-mat for preparing resistance to low high temperature and thus obtained material | |
| CN110978737B (en) | Preparation method of powder falling prevention composite silica aerogel felt | |
| CN102795826B (en) | Aerogel/inorganic lightweight aggregate composite thermal insulation material and preparation method thereof | |
| CN108505715B (en) | High-heat-conductivity long-service-life electric heating ceramic tile and manufacturing method thereof | |
| CN102910926B (en) | Preparation method of high-temperature resistant silicon carbide aerogel heat-insulation composite material | |
| CN111941965A (en) | Aluminum silicate composite fiber reinforced aerogel felt and preparation method thereof | |
| CN108249944B (en) | SiO (silicon dioxide)2Process for preparing base composite material | |
| CN111908932B (en) | Light high-efficiency heat-proof and heat-insulating integrated heat protection material and preparation method thereof | |
| CN110789191B (en) | Flexible aerogel heat insulation material and preparation method thereof | |
| CN111454071B (en) | Rock wool fiber reinforced silica-based high-strength heat insulation composite material and preparation method thereof | |
| CN106630978A (en) | Surface-toughened aluminum oxide fiber rigid heat-insulating tile multi-layered composite material, coating composition, preparation method and application of composite material | |
| CN113510978B (en) | Aerogel anticorrosion heat-insulation flexible plate and manufacturing method thereof | |
| CN111217617A (en) | Ultrahigh-temperature large-scale complex carbon/carbon material component | |
| CN111908889A (en) | Composite fiber reinforced aerogel felt and preparation method thereof | |
| CN108947392B (en) | Low-carbon environment-friendly high-elasticity mold fine home decoration mortar and preparation method thereof | |
| CN111825423A (en) | Efficient heat insulation sheet and preparation method thereof | |
| CN104150933A (en) | High-temperature heat-insulation refractory mortar | |
| CN114619719B (en) | Heat-insulating high-compression-resistance heat protection structure and preparation method thereof | |
| CN102617177A (en) | Manufacture method of boron nitride fabric reinforced silicon-boron-nitrogen ceramic-based composite material | |
| US20220089488A1 (en) | Bionic Laminated Thermal Insulation Material | |
| CN114559711A (en) | Multilayer aerogel composites | |
| CN108115798B (en) | Processing equipment and processing method of multilayer solid wood composite floor for floor heating |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |