CN113620643A - Preparation method of powder falling prevention silicon dioxide aerogel felt - Google Patents
Preparation method of powder falling prevention silicon dioxide aerogel felt Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/18—Polyesters; Polycarbonates
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- C—CHEMISTRY; METALLURGY
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/16—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
Abstract
The invention belongs to the field of heat insulation materials, and discloses a preparation method of a powder-dropping-prevention silicon dioxide aerogel felt.
Description
Technical Field
The invention belongs to the field of heat insulation materials, and particularly relates to a preparation method of a powder falling prevention silicon dioxide aerogel felt.
Background
At present, developing new energy, improving the utilization rate of the existing energy and saving energy have attracted great attention from various countries. China is an energy-poor country, so that reasonable utilization of energy and energy conservation have important significance on sustainable development of China's society. The development of environment-friendly heat insulation materials by adopting new technology and new process is one of the most effective and economic measures for saving energy.
SiO2Aerogel is a new super heat-insulating material, has extremely low heat conductivity coefficient which is far lower than that of static air at normal temperature by 0.25W/m.K, has incomparable heat-insulating and heat-preserving effects compared with other materials, has low density, is waterproof, flame-retardant, green and environment-friendly, is corrosion-resistant, is not easy to age, has long service life, and is called as the super heat-insulating material. At present, the composite material is mainly used for heat preservation and insulation in the fields of industrial pipelines, industrial furnace bodies, escape capsules, transportation, household appliances, glass and the like.
SiO due to the method of its preparation2The aerogel felt generally has the condition that the felt body drops aerogel powder in the transportation, construction and use processes, the powder dropping condition not only brings inconvenience to the construction, but also brings threat to the health of constructors, and simultaneously the performance of the aerogel felt can be reduced. Therefore, on the premise of ensuring good heat insulation performance of the aerogel felt, the development of the aerogel composite material without powder falling is necessary to ensure the health of production and use personnel and meet various requirements of the market. At present, the conventional powder falling prevention scheme is that glass fiber cloth, aluminum foil cloth and the like are pasted on the surface of an aerogel fiber felt, the mode is high in labor cost and not beneficial to large-scale production, the condition that aerogel powder falls off from a felt body can exist in the process of cutting the aerogel felt, and the front side and the back side are pasted and coatedThe flexibility of the material is reduced, the material is not easy to curl and bend, and the storage, transportation, construction and installation are not convenient enough. Therefore, the preparation of the silica aerogel composite material without powder falling is of great significance.
Disclosure of Invention
The invention aims to provide a preparation method of a powder falling prevention silicon dioxide aerogel felt.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the preparation method of the powder falling prevention silicon dioxide aerogel felt is characterized by comprising the following steps:
(1) preparing silica sol: uniformly mixing a silicon source, ethanol and water to obtain silicon dioxide sol;
(2) dipping the fiber felt body with the silica sol catalyzed by the gelling catalyst before gelling to prepare silica wet gel felt or dipping the fiber felt body with the silica sol and then catalyzing gelling by the gelling catalyst to prepare the silica wet gel felt;
(3) and packaging treatment: packaging the surfaces of the silica wet gel felt obtained in the step (2), and reserving one surface without packaging;
(4) and (3) drying treatment: drying the silica wet gel felt obtained in the step (3) after packaging treatment to obtain a silica aerogel felt;
(5) and (5) packaging the non-packaged surface of the silica aerogel felt obtained in the step (4) to obtain the powder falling prevention silica aerogel felt.
Preferably, in the step (1), the silica sol is obtained by mixing a silicon source, ethanol and water in a molar ratio of 1 to (2-60) to (1-30); the silicon source is one or more than two of ethyl orthosilicate, methyl orthosilicate, butyl orthosilicate, isopropyl orthosilicate or alkyl alkoxy silane; the alkyl alkoxy silane comprises one or more than two of methyl trimethoxy silane, dimethyl dimethoxy silane, methyl triethoxy silane, dimethyl diethoxy silane, vinyl triethoxy silane, propyl trimethoxy silane or propyl triethoxy silane.
Preferably, the step (1) further comprises adding an acidic catalyst into the silica sol, and adjusting the pH of the solution to 2-6, wherein the acidic catalyst is one or a combination of two or more of sulfuric acid, hydrochloric acid, hydrofluoric acid, oxalic acid, acetic acid or benzenesulfonic acid.
Preferably, in the step (2), the gelling catalyst is one or a combination of two of alkaline catalysts such as sodium hydroxide, potassium hydroxide, ammonia water and ammonium fluoride aqueous solution, and the alkaline gelling catalyst adjusts the pH of the silica sol to 6-8;
preferably, in the step (2), the fiber felt body is one of a glass fiber felt, an aluminum silicate fiber felt, a quartz fiber felt, a high silica fiber felt, a carbon fiber felt, a pre-oxidized fiber felt, a mullite fiber felt, a basalt fiber felt, a silicon carbide fiber felt, an alumina fiber felt, and a boron nitride fiber felt.
Preferably, the step (2) further comprises a gel aging process of the silica wet gel felt, specifically, the silica wet gel felt is aged for 8-24 hours at room temperature or under the condition of heating to 30-60 ℃.
Preferably, the aging treatment process further comprises a hydrophobization treatment process of the silica wet gel felt, specifically, the silica wet gel felt is placed in an anhydrous ethanol solution containing 0.2-10% of hydrophobization agent by volume fraction and is kept standing for 1-24h at room temperature.
Preferably, in the step (3) and the step (5), the specific process of the packaging treatment is as follows: and spraying a water-based adhesive, a water-based elastic coating or a flame-retardant coating on the surface of the silica gel felt body, wherein the thickness of the packaging layer is 0.01-3 mm.
Preferably, the aqueous adhesive comprises one of epoxy resin adhesive, acrylic acid adhesive, acrylate adhesive, EVA adhesive, polyester adhesive, polyether adhesive, polyurethane adhesive, polyurea adhesive, and the like.
Preferably, the water-based paint is one of water-based ethylene-vinyl acetate elastic paint, water-based organosilicon acrylic elastic paint, water-based acrylic elastic paint and water-based rubber emulsion.
Preferably, the flame retardant coating is any one of commercially available flame retardant coatings.
Preferably, in the step (4), the drying treatment is one of supercritical drying, freeze drying and atmospheric drying.
The powder falling prevention silicon dioxide aerogel felt is obtained by the preparation method.
Has the advantages that:
according to the invention, the surface of the silica wet gel felt is packaged, one of the surfaces is reserved and not packaged, the surface of the aerogel felt is sprayed with a water-based adhesive or a water-based elastic coating or a flame-retardant coating, the bonding force between the aerogel and the fibers on the surface of the fibrofelt body is enhanced before drying, then the drying process is carried out, and finally the surface which is not packaged is packaged, so that the phenomena of larger dust pollution and the like caused by the powder falling condition of the aerogel after drying are avoided to a great extent.
Generally, the powder falling phenomenon of the silicon dioxide aerogel composite material mainly occurs in the transportation, construction and use processes of drying an aerogel felt body, aerogel particles fall off from a fiber matrix after the aerogel felt body is dried, the existing powder falling prevention scheme is to use glass fiber cloth, aluminum foil cloth and the like to be pasted on the surface of the aerogel fiber felt, the felt body falling aerogel powder can still exist in the process of cutting the aerogel felt, the scheme is not the best scheme, the packaging treatment is directly carried out before the aerogel felt is dried, the aerogel on the surface of the felt body is still in a gel state during packaging, the powder falling phenomenon can not occur, and the phenomenon that the aerogel powder falls off on the surface of the felt body in the packaging treatment of drying the aerogel felt before the aerogel felt is well avoided.
The selection of the packaging layer can change the hydrophobic property of the felt body to a certain extent, and simultaneously can realize the function of flame retardant property.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that the following examples are illustrative only and are not intended to limit the scope of the present invention.
Example 1:
the preparation method of the powder falling prevention silicon dioxide aerogel felt is characterized by comprising the following steps:
(1) preparing silica sol: uniformly mixing a silicon source, ethanol and water to obtain silicon dioxide sol;
(2) adding a gelling catalyst into the sol obtained in the step (1), uniformly stirring to obtain catalyzed silica sol, and dipping and gelling the glass fiber mat in the catalyzed silica sol to obtain a silica wet gel mat;
(3) and packaging treatment: packaging the surface of the wet silica gel felt obtained in the step (2) by using a water-based adhesive, reserving the upper surface, and not packaging, wherein the thickness of a packaging layer is 1 mm;
(4) and aging treatment: carrying out aging treatment on the surface-packaged silicon dioxide wet gel felt obtained in the step (3) for 24 hours at room temperature;
(5) and (3) hydrophobization treatment: placing the aged silicon dioxide wet gel felt obtained in the step (4) into an absolute ethyl alcohol solution containing a hydrophobizing agent with the volume fraction of 9%, and standing at room temperature for 5 hours;
(6) and (3) drying treatment: performing supercritical drying treatment on the silica wet gel felt after the solvent replacement obtained in the step (5) to obtain a silica aerogel felt;
(7) and (4) packaging the non-packaged upper surface of the silica aerogel felt obtained in the step (6) to obtain the powder falling prevention silica aerogel felt.
Wherein, in the step (1), the silica sol is obtained by mixing a silicon source, ethanol and water according to a molar ratio of 1: 6: 2; the silicon source is tetraethoxysilane.
In the step (2), the gelling catalyst is ammonium fluoride aqueous solution, and the pH of the solution is adjusted to 7.
In the step (3), the aqueous adhesive is a polyester adhesive.
The powder falling prevention silicon dioxide aerogel felt is obtained by the preparation method.
The thermal conductivity of the powder-dropping prevention silica aerogel felt obtained in the embodiment is 0.02 w/(m.DEG C).
Example 2:
the preparation method of the powder falling prevention silicon dioxide aerogel felt is characterized by comprising the following steps:
(1) preparing silica sol: uniformly mixing a silicon source, ethanol and water to obtain silicon dioxide sol;
(2) dipping the aluminum silicate fiber felt in the silica sol in the step (1), and then adding a gelling catalyst to obtain a silica wet gel felt;
(3) and packaging treatment: packaging the surface of the wet silica gel felt obtained in the step (2) by adopting a flame-retardant coating, reserving the lower surface without packaging, wherein the thickness of a packaging layer is 1.5 mm;
(4) and aging treatment: carrying out aging treatment on the surface-packaged silicon dioxide wet gel felt obtained in the step (3) for 10 hours at the temperature of 40 ℃;
(5) and (3) hydrophobization treatment: placing the aged silicon dioxide wet gel felt obtained in the step (4) into an absolute ethyl alcohol solution containing a hydrophobizing agent with the volume fraction of 1%, and standing at room temperature for 20 hours;
(6) and solvent replacement: placing the silicon dioxide wet gel felt subjected to the hydrophobization treatment in the step (5) into absolute ethyl alcohol for solvent replacement, wherein the replacement times are 4 times, and the replacement time is 8 hours each time;
(7) and (3) drying treatment: performing supercritical drying treatment on the silica wet gel felt after the solvent replacement obtained in the step (6) to obtain a silica aerogel felt;
(8) and (5) packaging the non-packaged lower surface of the silica aerogel felt obtained in the step (7) to obtain the powder falling prevention silica aerogel felt.
Wherein, in the step (1), the silica sol is obtained by mixing a silicon source, ethanol and water according to a molar ratio of 1: 30: 8; the silicon source is methyl orthosilicate.
In the step (2), the gelling catalyst is an ammonia solution, and the pH of the solution is adjusted to 8.
In the step (3), the flame-retardant coating is a commercially available waterborne polyurethane flame-retardant coating.
The powder falling prevention silicon dioxide aerogel felt is obtained by the preparation method.
The thermal conductivity of the powder dropping prevention silica aerogel felt obtained in the embodiment is 0.022 w/(m.DEG C).
Example 3:
the preparation method of the powder falling prevention silicon dioxide aerogel felt is characterized by comprising the following steps:
(1) preparing silica sol: uniformly mixing a silicon source, ethanol and water to obtain silicon dioxide sol;
(2) adding a gelling catalyst into the sol obtained in the step (1), uniformly stirring to obtain catalyzed silica sol, and dipping and gelling the quartz fiber felt in the catalyzed silica sol to obtain a silica wet gel felt;
(3) and packaging treatment: packaging the surface of the wet silica gel felt obtained in the step (2) by using a water-based elastic coating, reserving the upper surface without packaging, and setting the thickness of a packaging layer to be 2 mm;
(4) and aging treatment: carrying out aging treatment on the surface-packaged silicon dioxide wet gel felt obtained in the step (3) for 18h at room temperature;
(5) and (3) drying treatment: drying the aged silica wet gel felt obtained in the step (4) at normal pressure to obtain a silica aerogel felt;
(6) and (5) packaging the non-packaged upper surface of the silica aerogel felt obtained in the step (5) to obtain the powder falling prevention silica aerogel felt.
Wherein, in the step (1), the silica sol is obtained by mixing a silicon source, ethanol and water according to a molar ratio of 1: 50: 25; the silicon source is tetraethoxysilane and methyltrimethoxysilane.
In the step (2), the gelling catalyst is a mixed solution of ammonia water and ammonium fluoride, and the pH of the silica sol is adjusted to 8.
In the step (3), the aqueous elastic coating is an aqueous ethylene-vinyl acetate elastic coating.
The powder falling prevention silicon dioxide aerogel felt is obtained by the preparation method.
The thermal conductivity of the powder-dropping prevention silica aerogel felt obtained in the embodiment is 0.021 w/(m.DEG C).
Example 4:
the preparation method of the powder falling prevention silicon dioxide aerogel felt is characterized by comprising the following steps:
(1) preparing silica sol: uniformly mixing a silicon source, ethanol and water to obtain silicon dioxide sol;
(2) adding a gelling catalyst into the sol obtained in the step (1), uniformly stirring to obtain catalyzed silica sol, and dipping and gelling the mullite fiber felt in the catalyzed silica sol to obtain a silica wet gel felt;
(3) and packaging treatment: packaging the surface of the wet silica gel felt obtained in the step (2) by using a water-based elastic coating, reserving a side surface without packaging, wherein the thickness of a packaging layer is 0.1 mm;
(4) and aging treatment: carrying out aging treatment on the surface-packaged silicon dioxide wet gel felt obtained in the step (3) for 15 hours at the temperature of 30 ℃;
(5) and (3) hydrophobization treatment: placing the aged silicon dioxide wet gel felt obtained in the step (4) into an absolute ethyl alcohol solution containing a hydrophobizing agent with the volume fraction of 5%, and standing at room temperature for 12 hours;
(6) and (3) drying treatment: drying the aged silica wet gel felt obtained in the step (5) under normal pressure to obtain a silica aerogel felt;
(7) and (4) packaging the side surface of the silica aerogel felt obtained in the step (6) which is not packaged to obtain the powder falling prevention silica aerogel felt.
Wherein, in the step (1), the silica sol is obtained by mixing a silicon source, ethanol and water according to a molar ratio of 1: 20: 8; the silicon source is isopropyl n-silicate.
In the step (2), the gelling catalyst is ammonia water, and the pH of the solution is adjusted to 9.
In the step (3), the aqueous elastic coating is an aqueous acrylic elastic coating.
The powder falling prevention silicon dioxide aerogel felt is obtained by the preparation method.
The thermal conductivity of the powder-dropping prevention silica aerogel felt obtained in the embodiment is 0.024 w/(m.DEG C).
Example 5:
the preparation method of the powder falling prevention silicon dioxide aerogel felt is characterized by comprising the following steps:
(1) preparing silica sol: uniformly mixing a silicon source, ethanol and water to obtain silicon dioxide sol;
(2) adding a gelling catalyst into the sol obtained in the step (1), uniformly stirring to obtain catalyzed silica sol, and dipping and gelling the silicon carbide fibrofelt in the catalyzed silica sol to obtain a silica wet gel felt;
(3) and packaging treatment: packaging the surface of the wet silica gel felt obtained in the step (2) by using a water-based adhesive, reserving a side surface without packaging, wherein the thickness of a packaging layer is 0.05 mm;
(4) and (3) drying treatment: performing supercritical drying treatment on the packaged silica wet gel felt obtained in the step (3) to obtain a silica aerogel felt;
(5) and (5) packaging the side surface of the silica aerogel felt obtained in the step (4) which is not packaged to obtain the powder falling prevention silica aerogel felt.
Wherein, in the step (1), the silica sol is obtained by mixing a silicon source, ethanol and water according to a molar ratio of 1: 40: 15; the silicon source is vinyl triethoxysilane.
In the step (2), the gelling catalyst is a mixed solution of ammonium fluoride and ammonia water, and the pH of the solution is adjusted to 8.
In the step (3), the aqueous adhesive is an acrylic adhesive.
The powder falling prevention silicon dioxide aerogel felt is obtained by the preparation method.
The thermal conductivity of the powder dropping prevention silica aerogel felt obtained in the embodiment is 0.022 w/(m.DEG C).
Claims (10)
1. The preparation method of the powder falling prevention silicon dioxide aerogel felt is characterized by comprising the following steps:
(1) preparing silica sol: uniformly mixing a silicon source, ethanol and water to obtain silicon dioxide sol;
(2) and (3) dipping treatment: soaking the fiber felt body with the silica sol catalyzed by the gelling catalyst before gelling to prepare the silica wet gel felt or soaking the fiber felt body with the silica sol and catalyzing gelling by the gelling catalyst to prepare the silica wet gel felt;
(3) and packaging treatment: packaging the surfaces of the silica wet gel felt obtained in the step (2), and reserving one surface without packaging;
(4) and (3) drying treatment: drying the silica wet gel felt obtained in the step (3) after packaging treatment to obtain a silica aerogel felt;
(5) and (5) packaging the non-packaged surface of the silica aerogel felt obtained in the step (4) to obtain the powder falling prevention silica aerogel felt.
2. The method of preparing a powder fall prevention silica aerogel blanket as claimed in claim 1, wherein: in the step (1), the silica sol is obtained by mixing a silicon source, ethanol and water in a molar ratio of 1 to (2-60) to (1-30); the silicon source is one or more than two of ethyl orthosilicate, methyl orthosilicate, butyl orthosilicate, isopropyl orthosilicate or alkyl alkoxy silane; the alkyl alkoxy silane comprises one or more than two of methyl trimethoxy silane, dimethyl dimethoxy silane, methyl triethoxy silane, dimethyl diethoxy silane, vinyl triethoxy silane, propyl trimethoxy silane or propyl triethoxy silane.
3. The method of preparing a powder fall prevention silica aerogel blanket as claimed in claim 1, wherein: and (2) adding an acidic catalyst into the silica sol obtained in the step (1), and adjusting the pH of the solution to 2-6, wherein the acidic catalyst is one or a combination of more than two of sulfuric acid, hydrochloric acid, hydrofluoric acid, oxalic acid, acetic acid or benzenesulfonic acid.
4. The method of preparing a powder fall prevention silica aerogel blanket as claimed in claim 1, wherein: in the step (2), the gelling catalyst is one or a combination of two of alkaline catalysts such as sodium hydroxide, potassium hydroxide, ammonia water and ammonium fluoride aqueous solution, and the pH of the silica sol is adjusted to 6-8 by the alkaline gelling catalyst.
5. The method of preparing a powder fall prevention silica aerogel blanket as claimed in claim 1, wherein: in the step (2), the fiber felt body is one of a glass fiber felt, an aluminum silicate fiber felt, a quartz fiber felt, a high silica fiber felt, a carbon fiber felt, a pre-oxidized fiber felt, a mullite fiber felt, a basalt fiber felt, a silicon carbide fiber felt, an alumina fiber felt and a boron nitride fiber felt.
6. The method of preparing a powder fall prevention silica aerogel blanket as claimed in claim 1, wherein: and (2) further comprising a gel aging process of the silica wet gel felt, specifically, carrying out aging treatment on the silica wet gel felt for 8-24 hours at room temperature or at the temperature of 30-60 ℃.
7. The method of preparing the powder fall prevention silica aerogel blanket as claimed in claim 6, wherein: and (3) after the aging treatment, the process of hydrophobization treatment of the silica wet gel felt is also included, specifically, the silica wet gel felt is placed in an absolute ethyl alcohol solution containing 0.2-10% of hydrophobization agent by volume fraction, and is kept standing for 1-24h at room temperature.
8. The method of preparing a powder fall prevention silica aerogel blanket as claimed in claim 1, wherein: in the step (3) and the step (5), the specific process of the packaging treatment is as follows: spraying a water-based adhesive or a water-based elastic coating or a flame-retardant coating on the surface of the silica gel felt body, wherein the thickness of the packaging layer is 0.01-3 mm; the water-based adhesive comprises one of epoxy resin adhesive, acrylic acid adhesive, acrylate adhesive, EVA adhesive, polyester adhesive, polyether adhesive, polyurethane adhesive, polyurea adhesive and the like; the water-based paint is one of water-based ethylene-vinyl acetate elastic paint, water-based organic silicon acrylic elastic paint, water-based acrylic elastic paint and water-based rubber emulsion.
9. The method of preparing a powder fall prevention silica aerogel blanket as claimed in claim 1, wherein: in the step (4), the drying treatment is one of supercritical drying, freeze drying and normal pressure drying.
10. A powder fall-off resistant silica aerogel blanket prepared by the method of any of claims 1 to 9.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114538824A (en) * | 2022-03-08 | 2022-05-27 | 浙江元通线缆制造有限公司 | Preparation method of aerogel heat insulation felt and aerogel flame-retardant heat insulation cable |
| CN114571815A (en) * | 2022-03-10 | 2022-06-03 | 浙江葆润应用材料有限公司 | Multi-layer fireproof PCM composite material for battery pack |
| CN114801395A (en) * | 2022-05-24 | 2022-07-29 | 巩义市泛锐熠辉复合材料有限公司 | Low-dust aerogel product and preparation method thereof |
| CN114806325A (en) * | 2022-03-21 | 2022-07-29 | 河南普力特克新材料有限公司 | Encapsulation flame-retardant coating for aerogel and production process thereof |
| CN114801360A (en) * | 2022-06-14 | 2022-07-29 | 巩义市泛锐熠辉复合材料有限公司 | Wet-process fiber sheet reinforced aerogel film-coated product and preparation method thereof |
| CN114933466A (en) * | 2022-06-09 | 2022-08-23 | 中国兵器装备集团西南技术工程研究所 | Light heat insulation layer for special pipeline and preparation method thereof |
| CN115043408A (en) * | 2022-07-04 | 2022-09-13 | 巩义市泛锐熠辉复合材料有限公司 | Flexible silicon dioxide aerogel, aerogel felt and preparation method thereof |
| CN115057683A (en) * | 2022-07-13 | 2022-09-16 | 巩义市泛锐熠辉复合材料有限公司 | Wet-method fiber-reinforced high-temperature-resistant aerogel product and preparation method thereof |
| CN115124319A (en) * | 2022-07-04 | 2022-09-30 | 巩义市泛锐熠辉复合材料有限公司 | High-compression silicon dioxide aerogel, aerogel felt and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948296A (en) * | 2010-09-28 | 2011-01-19 | 航天特种材料及工艺技术研究所 | High-performance thermal insulation material and preparation method thereof |
| CN105645921A (en) * | 2016-03-10 | 2016-06-08 | 深圳中凝科技有限公司 | Method for preparing composite SiO2 aerogel felt |
| US20180147811A1 (en) * | 2016-03-28 | 2018-05-31 | Lg Chem, Ltd | Method of preparing low-dust and high-insulation aerogel blanket |
| CN109400105A (en) * | 2018-09-26 | 2019-03-01 | 巩义市泛锐熠辉复合材料有限公司 | A kind of preparation method of anti-picking aerogel blanket |
| CN111018482A (en) * | 2019-11-22 | 2020-04-17 | 巩义市泛锐熠辉复合材料有限公司 | Preparation method of fiber-reinforced flexible silica aerogel |
| CN111016332A (en) * | 2019-12-26 | 2020-04-17 | 巩义市泛锐熠辉复合材料有限公司 | Preparation method of heat-insulation vacuum plate |
| WO2020127494A1 (en) * | 2018-12-19 | 2020-06-25 | Rong Chun Jun | Insulation material |
| CN111851070A (en) * | 2020-07-07 | 2020-10-30 | 巩义市泛锐熠辉复合材料有限公司 | Heat-insulating flame-retardant sheet and preparation method thereof |
-
2021
- 2021-09-18 CN CN202111100883.XA patent/CN113620643B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948296A (en) * | 2010-09-28 | 2011-01-19 | 航天特种材料及工艺技术研究所 | High-performance thermal insulation material and preparation method thereof |
| CN105645921A (en) * | 2016-03-10 | 2016-06-08 | 深圳中凝科技有限公司 | Method for preparing composite SiO2 aerogel felt |
| US20180147811A1 (en) * | 2016-03-28 | 2018-05-31 | Lg Chem, Ltd | Method of preparing low-dust and high-insulation aerogel blanket |
| CN109400105A (en) * | 2018-09-26 | 2019-03-01 | 巩义市泛锐熠辉复合材料有限公司 | A kind of preparation method of anti-picking aerogel blanket |
| WO2020127494A1 (en) * | 2018-12-19 | 2020-06-25 | Rong Chun Jun | Insulation material |
| CN111018482A (en) * | 2019-11-22 | 2020-04-17 | 巩义市泛锐熠辉复合材料有限公司 | Preparation method of fiber-reinforced flexible silica aerogel |
| CN111016332A (en) * | 2019-12-26 | 2020-04-17 | 巩义市泛锐熠辉复合材料有限公司 | Preparation method of heat-insulation vacuum plate |
| CN111851070A (en) * | 2020-07-07 | 2020-10-30 | 巩义市泛锐熠辉复合材料有限公司 | Heat-insulating flame-retardant sheet and preparation method thereof |
Cited By (12)
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|---|---|---|---|---|
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| CN114571815A (en) * | 2022-03-10 | 2022-06-03 | 浙江葆润应用材料有限公司 | Multi-layer fireproof PCM composite material for battery pack |
| CN114806325A (en) * | 2022-03-21 | 2022-07-29 | 河南普力特克新材料有限公司 | Encapsulation flame-retardant coating for aerogel and production process thereof |
| CN114801395A (en) * | 2022-05-24 | 2022-07-29 | 巩义市泛锐熠辉复合材料有限公司 | Low-dust aerogel product and preparation method thereof |
| CN114933466A (en) * | 2022-06-09 | 2022-08-23 | 中国兵器装备集团西南技术工程研究所 | Light heat insulation layer for special pipeline and preparation method thereof |
| CN114801360A (en) * | 2022-06-14 | 2022-07-29 | 巩义市泛锐熠辉复合材料有限公司 | Wet-process fiber sheet reinforced aerogel film-coated product and preparation method thereof |
| CN114801360B (en) * | 2022-06-14 | 2023-12-15 | 巩义市泛锐熠辉复合材料有限公司 | Wet fiber sheet reinforced aerogel film-covered product and preparation method thereof |
| CN115043408A (en) * | 2022-07-04 | 2022-09-13 | 巩义市泛锐熠辉复合材料有限公司 | Flexible silicon dioxide aerogel, aerogel felt and preparation method thereof |
| CN115124319A (en) * | 2022-07-04 | 2022-09-30 | 巩义市泛锐熠辉复合材料有限公司 | High-compression silicon dioxide aerogel, aerogel felt and preparation method thereof |
| CN115124319B (en) * | 2022-07-04 | 2023-03-24 | 巩义市泛锐熠辉复合材料有限公司 | High-compression silicon dioxide aerogel, aerogel felt and preparation method thereof |
| CN115043408B (en) * | 2022-07-04 | 2023-11-10 | 巩义市泛锐熠辉复合材料有限公司 | Flexible silica aerogel, aerogel felt and preparation method thereof |
| CN115057683A (en) * | 2022-07-13 | 2022-09-16 | 巩义市泛锐熠辉复合材料有限公司 | Wet-method fiber-reinforced high-temperature-resistant aerogel product and preparation method thereof |
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