CN111682286A - Heat-insulating flame-retardant sheet for new energy automobile battery pack and preparation method thereof - Google Patents
Heat-insulating flame-retardant sheet for new energy automobile battery pack and preparation method thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of heat insulation and heat dissipation of new energy automobile battery packs, and discloses a heat insulation flame-retardant sheet for a new energy automobile battery pack and a preparation method thereof. The flame-retardant coating is sprayed on the periphery of the substrate layer, and the substrate layer and the flame-retardant coating are arranged in the protective layer; the base material layer is aerogel felt, the flame-retardant coating is composed of aqueous elastic coating, aqueous resin, a flame retardant, a dispersing agent, a coupling agent, silicon dioxide powder and short fibers, and the protective layer is a flame-retardant insulating film. The preparation method comprises the following steps: according to the composition of the flame-retardant coating, taking the raw materials, and uniformly stirring to obtain the flame-retardant coating; sweeping the surface of the aerogel felt to obtain a felt body A; spraying the flame-retardant coating around the felt A, and drying to obtain a felt B; and sticking the flame-retardant insulating film on the periphery of the felt body B to obtain the heat-insulating flame-retardant sheet. According to the invention, the flame-retardant insulating film covers the outer side of the flame-retardant coating, so that the flame-retardant coating on the inner side is protected, and the flame-retardant performance of the heat-insulating flame-retardant sheet is improved.
Description
Technical Field
The invention belongs to the technical field of heat insulation and heat dissipation of new energy automobile battery packs, and particularly relates to a heat insulation flame retardant sheet for a new energy automobile battery pack and a preparation method thereof.
Background
The new energy automobile refers to all other energy automobiles except gasoline and diesel engines. Including fuel cell vehicles, hybrid vehicles, hydrogen-powered vehicles, solar vehicles, and the like, have a relatively low exhaust emission.
As the new energy automobile meets the environmental protection requirement vigorously advocated by the nation, the sales volume of the new energy automobile is increased year by year, the application range is larger and larger, the new energy automobiles sold in the current Chinese market are mostly hybrid electric vehicles and pure electric vehicles, and the power supply of the new energy automobiles mainly comprises lithium ion batteries, nickel-hydrogen batteries, fuel batteries, lead-acid batteries and super capacitors. Because the power that the automobile traveles needs is very big, the new energy automobile that adopts electric power to provide power need the battery compartment for a long time to provide great electric current in order to guarantee can normally travel, guarantees the provision of power. After the vehicle-mounted battery outputs electric energy for a long time, the battery body can obviously generate heat by long-time chemical reaction in the battery, and the risks of combustion and explosion exist. Traditional battery core module all adopts the plastics baffle to separate the battery each other, and there is not the actual use, and not only weight is big still can't play the guard action like this, and causes the battery high temperature easily and lead to the baffle to dissolve, the scheduling problem catches fire. The existing protective felt is simple in structure and easy to deform, mostly depends on the heat insulation function of the felt body to resist flame, and cannot meet the relevant standards of the national new energy field. Therefore, how to realize the safety problem of the battery pack in the field of new energy automobiles, a convenient and effective heat insulation and heat dissipation solution is the problem of the long-term development and the primary consideration of new energy realization.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a heat-insulating flame-retardant sheet for a new energy automobile battery pack and a preparation method thereof.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the heat-insulating flame-retardant sheet for the new energy automobile battery pack comprises a base material layer, a flame-retardant coating and a protective layer, wherein the flame-retardant coating is sprayed on the periphery of the base material layer, and the base material layer and the flame-retardant coating are arranged in the protective layer; the base material layer is an aerogel felt, the flame-retardant coating layer is composed of an aqueous elastic coating, aqueous resin, a flame retardant, a dispersing agent, a coupling agent, silicon dioxide powder and short fibers according to the mass ratio of (35-55) to (15-35) to (15-20) to (1-3) to (0.5-3), and the protective layer is a flame-retardant insulating film.
The thickness of the flame-retardant coating and the protective layer can be adjusted according to different applications, the thickness of the flame-retardant coating can be 0.01-0.2 mm in practice, and the thickness of the flame-retardant insulating film of the protective layer can be 0.05-0.4 mm.
Preferably, the aerogel felt is one of a silica aerogel felt, an alumina aerogel felt, a titania aerogel felt, and a zirconia aerogel felt.
Preferably, the aqueous elastic coating is one of aqueous ethylene-vinyl acetate elastic coating, aqueous organosilicon acrylic elastic coating, aqueous acrylic elastic coating and aqueous rubber emulsion.
Preferably, the aqueous resin is one of an aqueous epoxy resin, an aqueous polyurea resin, an aqueous phenol resin and an aqueous polyurethane resin.
Preferably, the flame retardant is one or more of phosphorus-nitrogen flame retardant, inorganic flame retardant, DOPO, decabromodiphenyl ether and decabromodiphenyl ethane.
Preferably, the inorganic flame retardant is aluminum hydroxide, magnesium hydroxide, ammonium phosphate or zinc borate, and the phosphorus-nitrogen flame retardant is ammonium polyphosphate, isopropylated triphenyl phosphate, melamine pyrophosphate or melamine cyanurate.
Preferably, the dispersant is one of BYK-161, BYK-163 and BYK-2000.
Preferably, the coupling agent is one of a silane coupling agent, a titanate coupling agent, an aluminate coupling agent and a borate coupling agent.
Preferably, the short fiber has a length of 50-500 μm, and is one or more of carbon fiber, boron fiber, silicon carbide fiber, silicon nitride fiber, quartz fiber, alumina fiber, zirconia fiber, glass fiber, aluminum silicate fiber, and mullite fiber.
Preferably, the flame-retardant insulating film is one of a polyester film, a polyimide film, a polyvinyl chloride film, a polycarbonate film, a polyethylene film and a polyphenylene sulfide film.
A preparation method of the heat-insulating flame-retardant sheet for the new energy automobile battery pack comprises the following preparation steps:
(1) according to the composition of the flame-retardant coating, the water-based elastic coating and the water-based resin are uniformly stirred, then the flame retardant, the dispersing agent, the coupling agent, the silicon dioxide powder and the short fiber are sequentially added, and the mixture is continuously stirred until the mixture is uniform, so that the flame-retardant coating is obtained;
(2) purging the surface of the aerogel felt to be clean, and removing floating powder on the surface to obtain a felt body A;
(3) spraying the flame-retardant coating obtained in the step (1) on the periphery of the felt body A obtained in the step (2);
(4) drying the felt body obtained in the step (3) to obtain a felt body B;
(5) and sticking the flame-retardant insulating film around the felt body B through an adhesive to obtain the heat-insulating flame-retardant sheet.
Preferably, in the step (1), the stirring speed is 450-600 r/min.
Preferably, in the step (4), the drying temperature is 50-80 ℃, and the drying time is 5-20 min.
Preferably, in the step (5), the adhesive is one of epoxy resin adhesive, polyurethane adhesive, optical epoxy adhesive, saturated polyester adhesive and polyvinyl acetal adhesive.
Has the advantages that:
(1) the thermal insulation flame-retardant sheet prepared by the invention adopts the aerogel felt as the base material layer, has the characteristics of light weight and low heat conductivity coefficient, and the flame-retardant coating sprayed on the outer side of the aerogel felt can prevent the surface of the aerogel felt from dropping powder, increase the flame retardant property of the aerogel felt and not influence the flexibility of the aerogel felt; the viscosity of the coating can be adjusted by adding the silicon dioxide powder into the flame-retardant coating, so that the coating is convenient to coat, and the hardness and the adhesive force of the flame-retardant coating can be adjusted by adding the water-based resin;
(2) the flame retardant coating disclosed by the invention has the flame retardant grade reaching V0, is self-extinguished after being away from fire, is applied to the field of new energy automobile batteries, and can delay the ignition time of an automobile and enhance the time for escaping; after the flame-retardant coating is sprayed and dried on the substrate layer, the condition of no cracking is found after repeated folding, and the long-time use can be ensured;
(3) the flame-retardant coating is covered with the flame-retardant insulating film, and the aerogel felt sprayed with the flame-retardant coating is sealed, so that the flame-retardant coating on the inner side is protected, the flame retardant property of the heat-insulating flame-retardant sheet is improved, the integrity is good, the process is simple, and the operation is easy;
(4) the heat-insulating flame-retardant sheet prepared by the invention can be applied to new energy automobiles in a large scale, and the excellent heat-insulating property of the heat-insulating flame-retardant sheet has great reference significance for the application of the heat-insulating flame-retardant sheet in the heat-insulating fields of buildings, industry, civil use and the like.
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 heat-insulating flame-retardant sheet for the new energy automobile battery pack comprises a base material layer, a flame-retardant coating and a protective layer, wherein the flame-retardant coating is sprayed on the periphery of the base material layer, the base material layer and the flame-retardant coating are arranged in the protective layer, the thickness of the flame-retardant coating is 0.05mm, and the thickness of the protective layer is 0.05 mm; the substrate layer is a silica aerogel felt; the flame-retardant coating consists of a water-based ethylene-vinyl acetate elastic coating, water-based epoxy resin, an ammonium polyphosphate flame retardant, a BYK-161 dispersing agent, a silane coupling agent, silicon dioxide powder and silicon carbide fibers (the length is 100 mu m), and the mass ratio of the water-based ethylene-vinyl acetate elastic coating to the water-based epoxy resin to the ammonium polyphosphate flame retardant to the BYK-161 dispersing agent to the silane coupling agent to the silicon dioxide powder to the silicon carbide fibers is 35: 15: 1: 0.5; the protective layer is a polyester film.
The preparation method of the heat-insulating flame-retardant sheet for the new energy automobile battery pack comprises the following preparation steps:
(1) according to the composition of the flame-retardant coating, putting the water-based ethylene-vinyl acetate elastic coating and the water-based epoxy resin into a stirrer, uniformly stirring at the speed of 450r/min, then sequentially adding an ammonium polyphosphate flame retardant, a BYK-161 dispersing agent, a silane coupling agent, silicon dioxide powder and silicon carbide fiber, and continuously stirring until the mixture is uniform to obtain the flame-retardant coating;
(2) purging the surface of the silica aerogel felt to be clean, and removing floating powder on the surface to obtain a felt body A;
(3) spraying the flame-retardant coating obtained in the step (1) on the periphery of the felt body A obtained in the step (2);
(4) drying the felt body obtained in the step (3) at 60 ℃ for 12min to obtain a felt body B;
(5) and adhering the polyester film to the periphery of the felt body B through optical epoxy glue to obtain the heat-insulating flame-retardant sheet.
Comparative example 1
The difference from example 1 is that: the flame retardant coating was made without the water-borne epoxy resin, and the rest of the composition was the same as in example 1.
Example 2
The heat-insulating flame-retardant sheet for the new energy automobile battery pack comprises a base material layer, a flame-retardant coating and a protective layer, wherein the flame-retardant coating is sprayed on the periphery of the base material layer, the base material layer and the flame-retardant coating are arranged in the protective layer, the thickness of the flame-retardant coating is 0.1mm, and the thickness of the protective layer is 0.1 mm; wherein the substrate layer is an alumina aerogel felt; the flame-retardant coating comprises water-based organic silicon acrylic elastic coating, water-based polyurea resin, isopropylated triphenyl phosphate flame retardant, BYK-163 dispersing agent, titanate coupling agent, silicon dioxide powder and quartz fiber (the length is 300 mu m), and the mass ratio of the water-based organic silicon acrylic elastic coating to the water-based polyurea resin to the isopropylated triphenyl phosphate flame retardant to the BYK-163 dispersing agent to the titanate coupling agent to the silicon dioxide powder to the quartz fiber is 40: 18: 16: 1.5: 1.2: 0.8; the protective layer is a polyimide film.
The preparation method of the heat-insulating flame-retardant sheet for the new energy automobile battery pack comprises the following preparation steps:
(1) according to the composition of the flame-retardant coating, putting the water-based organic silicon acrylic elastic coating and the water-based polyurea resin into a stirrer, uniformly stirring at the speed of 600r/min, then sequentially adding an isopropylated triphenyl phosphate flame retardant, a BYK-163 dispersing agent, a titanate coupling agent, silicon dioxide powder and quartz fiber, and continuously stirring until the mixture is uniform to obtain the flame-retardant coating;
(2) purging the surface of the alumina aerogel felt to remove floating powder on the surface to obtain a felt body A;
(3) spraying the flame-retardant coating obtained in the step (1) on the periphery of the felt body A obtained in the step (2);
(4) drying the felt obtained in the step (3) at 70 ℃ for 8min to obtain a felt B;
(5) and sticking the polyimide film around the felt body B through epoxy resin glue to obtain the heat-insulating flame-retardant sheet.
Comparative example 2
The difference from example 2 is that: the composition of the flame retardant coating was the same as that of example 2 except that no aqueous polyurea resin was present.
Example 3
The heat-insulating flame-retardant sheet for the new energy automobile battery pack comprises a base material layer, a flame-retardant coating and a protective layer, wherein the flame-retardant coating is sprayed on the periphery of the base material layer, the base material layer and the flame-retardant coating are arranged in the protective layer, the thickness of the flame-retardant coating is 0.15mm, and the thickness of the protective layer is 0.2 mm; the substrate layer is a silica aerogel felt; the flame-retardant coating consists of aqueous acrylic elastic coating, aqueous polyurethane resin, a magnesium hydroxide flame retardant, a BYK-2000 dispersing agent, an aluminate coupling agent, silicon dioxide powder and aluminum silicate fibers (the length is 500 mu m), wherein the mass ratio of the aqueous acrylic elastic coating to the aqueous polyurethane resin to the magnesium hydroxide flame retardant to the BYK-2000 dispersing agent to the aluminate coupling agent to the silicon dioxide powder to the aluminum silicate fibers is 45: 20: 18: 2: 1.5: 1; the protective layer is a polycarbonate film.
The preparation method of the heat-insulating flame-retardant sheet for the new energy automobile battery pack comprises the following preparation steps:
(1) according to the composition of the flame-retardant coating, putting the aqueous acrylic elastic coating and the aqueous polyurethane resin into a stirrer, uniformly stirring at the speed of 500r/min, then sequentially adding the magnesium hydroxide flame retardant, the BYK-2000 dispersing agent, the aluminate coupling agent, the silicon dioxide powder and the aluminum silicate fiber, and continuously stirring until the mixture is uniform to obtain the flame-retardant coating;
(2) purging the surface of the silica aerogel felt to be clean, and removing floating powder on the surface to obtain a felt body A;
(3) spraying the flame-retardant coating obtained in the step (1) on the periphery of the felt body A obtained in the step (2);
(4) drying the felt body obtained in the step (3) at 50 ℃ for 20min to obtain a felt body B;
(5) and sticking the polycarbonate film around the felt body B through saturated polyester adhesive to obtain the heat-insulating flame-retardant sheet.
Comparative example 3
The difference from example 3 is that: the composition of the flame retardant coating was the same as that of example 3 except that no aqueous urethane resin was contained.
Example 4
The heat-insulating flame-retardant sheet for the new energy automobile battery pack comprises a base material layer, a flame-retardant coating and a protective layer, wherein the flame-retardant coating is sprayed on the periphery of the base material layer, the base material layer and the flame-retardant coating are arranged in the protective layer, the thickness of the flame-retardant coating is 0.2mm, and the thickness of the protective layer is 0.3 mm; the substrate layer is a zirconium dioxide aerogel felt; the flame-retardant coating comprises water-based rubber emulsion, water-based phenolic resin, melamine pyrophosphate flame retardant, BYK-161 dispersant, borate coupling agent, silica powder and alumina fiber (the length is 400 mu m), and the mass ratio of the water-based rubber emulsion to the water-based phenolic resin to the melamine pyrophosphate flame retardant to the BYK-161 dispersant to the borate coupling agent to the silica powder is as follows: alumina fiber = 50: 30: 18: 2.5: 1.8; the protective layer is a polyvinyl chloride film.
The preparation method of the heat-insulating flame-retardant sheet for the new energy automobile battery pack comprises the following preparation steps:
(1) according to the composition of the flame-retardant coating, putting aqueous rubber emulsion and aqueous phenolic resin into a stirrer, uniformly stirring at the speed of 550r/min, then sequentially adding melamine pyrophosphate flame retardant, BYK-161 dispersant, borate coupling agent, silica powder and alumina fiber, and continuously stirring until the mixture is uniform to obtain the flame-retardant coating;
(2) purging the surface of the zirconium dioxide aerogel felt to be clean, and removing floating powder on the surface to obtain a felt body A;
(3) spraying the flame-retardant coating obtained in the step (1) on the periphery of the felt body A obtained in the step (2);
(4) drying the felt body obtained in the step (3) at 80 ℃ for 5min to obtain a felt body B;
(5) and sticking the polyvinyl chloride film on the periphery of the felt body B through polyvinyl acetal glue to obtain the heat-insulating flame-retardant sheet.
Comparative example 4
The difference from example 4 is that: the flame retardant coating was made without the aqueous phenolic resin, and the remainder was the same as in example 4.
Example 5
The heat-insulating flame-retardant sheet for the new energy automobile battery pack comprises a base material layer, a flame-retardant coating and a protective layer, wherein the flame-retardant coating is sprayed on the periphery of the base material layer, the base material layer and the flame-retardant coating are arranged in the protective layer, the thickness of the flame-retardant coating is 0.2mm, and the thickness of the protective layer is 0.4 mm; wherein the substrate layer is aerogel felt; the flame-retardant coating consists of a water-based organic silicon acrylic elastic coating, water-based polyurethane resin, a decabromodiphenyl ether flame retardant, a BYK-163 dispersing agent, a silane coupling agent, silicon dioxide powder and mullite fiber (the length is 300 mu m), wherein the water-based organic silicon acrylic elastic coating, the water-based polyurethane resin, the decabromodiphenyl ether flame retardant, the BYK-163 dispersing agent, the silane coupling agent, the silicon dioxide powder and the mullite fiber are = 55: 35: 20: 3: 2 in mass ratio; the protective layer is a polyphenylene sulfide film.
The preparation method of the heat-insulating flame-retardant sheet for the new energy automobile battery pack comprises the following preparation steps:
(1) according to the composition of the flame-retardant coating, putting the aqueous organosilicon acrylic elastic coating and the aqueous polyurethane resin into a stirrer, uniformly stirring at the speed of 480r/min, then sequentially adding the decabromodiphenyl ether flame retardant, the BYK-163 dispersing agent, the silane coupling agent, the silicon dioxide powder and the mullite fiber, and continuously stirring until the mixture is uniform to obtain the flame-retardant coating;
(2) purging the surface of the silica aerogel felt to be clean, and removing floating powder on the surface to obtain a felt body A;
(3) spraying the flame-retardant coating obtained in the step (1) on the periphery of the felt body A obtained in the step (2);
(4) drying the felt body obtained in the step (3) at 65 ℃ for 10min to obtain a felt body B;
(5) and sticking the polyphenylene sulfide film around the felt body B through saturated polyester adhesive to obtain the heat-insulating flame-retardant sheet.
Comparative example 5
The difference from example 5 is that: the composition of the flame retardant coating was the same as that of example 5 except that the aqueous polyurethane resin was not contained.
The felt bodies B obtained in examples 1 to 5 were subjected to combustion tests for 10 seconds twice, respectively, and the results showed that: the flame was extinguished within 30 seconds to self-extinguish from the fire and no combustibles were lost, indicating that the flame retardant coating achieved a flame retardant rating of V0.
The felt bodies B obtained in examples 1 to 5 were repeatedly folded, and the results showed that: no cracking was found.
The felt bodies B obtained in examples 1 to 5 and comparative examples 1 to 5 were subjected to adhesion test in accordance with "paint adhesion test" GB1720, and the results showed that: the adhesion grades of the flame-retardant coatings obtained in examples 1 to 5 to which the water-based resin was added were all 1 grade, and the adhesion grades of the flame-retardant coatings obtained in comparative examples 1 to 5 to which the water-based resin was not added were all 3 grades.
Claims (10)
1. The utility model provides a new energy automobile group battery is with fire-retardant piece that insulates against heat which characterized in that: the heat-insulating flame-retardant sheet comprises a base material layer, a flame-retardant coating and a protective layer, wherein the flame-retardant coating is sprayed on the periphery of the base material layer, and the base material layer and the flame-retardant coating are arranged in the protective layer; the base material layer is an aerogel felt, the flame-retardant coating layer is composed of an aqueous elastic coating, aqueous resin, a flame retardant, a dispersing agent, a coupling agent, silicon dioxide powder and short fibers according to the mass ratio of (35-55) to (15-35) to (15-20) to (1-3) to (0.5-3), and the protective layer is a flame-retardant insulating film.
2. The heat-insulating flame-retardant sheet for the new energy automobile battery pack according to claim 1, characterized in that: the aerogel felt is one of silicon dioxide aerogel felt, aluminum oxide aerogel felt, titanium dioxide aerogel felt and zirconium dioxide aerogel felt.
3. The heat-insulating flame-retardant sheet for the new energy automobile battery pack according to claim 1, characterized in that: the water-based elastic coating is one of water-based ethylene-vinyl acetate elastic coating, water-based organic silicon acrylic elastic coating, water-based acrylic elastic coating and water-based rubber emulsion.
4. The heat-insulating flame-retardant sheet for the new energy automobile battery pack according to claim 1, characterized in that: the water-based resin is one of water-based epoxy resin, water-based polyurea resin, water-based phenolic resin and water-based polyurethane resin.
5. The heat-insulating flame-retardant sheet for the new energy automobile battery pack according to claim 1, characterized in that: the flame retardant is one or more of phosphorus-nitrogen flame retardant, inorganic flame retardant, DOPO, decabromodiphenyl ether and decabromodiphenyl ethane.
6. The heat-insulating flame-retardant sheet for the new energy automobile battery pack according to claim 1, characterized in that: the dispersing agent is one of BYK-161, BYK-163 and BYK-2000.
7. The heat-insulating flame-retardant sheet for the new energy automobile battery pack according to claim 1, characterized in that: the coupling agent is one of silane coupling agent, titanate coupling agent, aluminate coupling agent and borate coupling agent.
8. The heat-insulating flame-retardant sheet for the new energy automobile battery pack according to claim 1, characterized in that: the short fiber is 50-500 μm in length, and is one or more of carbon fiber, boron fiber, silicon carbide fiber, silicon nitride fiber, quartz fiber, alumina fiber, zirconia fiber, glass fiber, aluminum silicate fiber and mullite fiber.
9. The heat-insulating flame-retardant sheet for the new energy automobile battery pack according to claim 1, characterized in that: the flame-retardant insulating film is one of a polyester film, a polyimide film, a polyvinyl chloride film, a polycarbonate film, a polyethylene film and a polyphenylene sulfide film.
10. The preparation method of the heat-insulating flame-retardant sheet for the new energy automobile battery pack according to any one of claims 1 to 9, characterized by comprising the following steps:
(1) according to the composition of the flame-retardant coating, the water-based elastic coating and the water-based resin are uniformly stirred, then the flame retardant, the dispersing agent, the coupling agent, the silicon dioxide powder and the short fiber are sequentially added, and the mixture is continuously stirred until the mixture is uniform, so that the flame-retardant coating is obtained;
(2) purging the surface of the aerogel felt to be clean, and removing floating powder on the surface to obtain a felt body A;
(3) spraying the flame-retardant coating obtained in the step (1) on the periphery of the felt body A obtained in the step (2);
(4) drying the felt body obtained in the step (3) to obtain a felt body B;
(5) and sticking the flame-retardant insulating film around the felt body B through an adhesive to obtain the heat-insulating flame-retardant sheet.
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| CN202010646019.9A CN111682286A (en) | 2020-07-07 | 2020-07-07 | Heat-insulating flame-retardant sheet for new energy automobile battery pack and preparation method thereof |
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| CN202010646019.9A CN111682286A (en) | 2020-07-07 | 2020-07-07 | Heat-insulating flame-retardant sheet for new energy automobile battery pack and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022197405A1 (en) * | 2021-03-17 | 2022-09-22 | Dow Silicones Corporation | Aerogel polysiloxane layer laminate structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106007635A (en) * | 2015-03-24 | 2016-10-12 | 金承黎 | Aerogel composite material with surface subjected to dust-free treatment and preparation method |
| CN108587510A (en) * | 2018-05-08 | 2018-09-28 | 王宏宁 | Aerogel heat-proof piece |
| CN209963108U (en) * | 2019-06-03 | 2020-01-17 | 江苏泛亚微透科技股份有限公司 | Silica aerogel felt product for lithium ion power storage battery of electric automobile |
-
2020
- 2020-07-07 CN CN202010646019.9A patent/CN111682286A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106007635A (en) * | 2015-03-24 | 2016-10-12 | 金承黎 | Aerogel composite material with surface subjected to dust-free treatment and preparation method |
| CN108587510A (en) * | 2018-05-08 | 2018-09-28 | 王宏宁 | Aerogel heat-proof piece |
| CN209963108U (en) * | 2019-06-03 | 2020-01-17 | 江苏泛亚微透科技股份有限公司 | Silica aerogel felt product for lithium ion power storage battery of electric automobile |
Non-Patent Citations (1)
| Title |
|---|
| 徐滨士 等: "《表面工程的理论与技术》", 30 April 2010 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022197405A1 (en) * | 2021-03-17 | 2022-09-22 | Dow Silicones Corporation | Aerogel polysiloxane layer laminate structure |
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Application publication date: 20200918 |