CN110212139A - Environment-friendly type Ultralow Water ceramic coating membrane and preparation method, solution and slurry - Google Patents
Environment-friendly type Ultralow Water ceramic coating membrane and preparation method, solution and slurry Download PDFInfo
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- CN110212139A CN110212139A CN201910557980.8A CN201910557980A CN110212139A CN 110212139 A CN110212139 A CN 110212139A CN 201910557980 A CN201910557980 A CN 201910557980A CN 110212139 A CN110212139 A CN 110212139A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/431—Inorganic material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
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- Sealing Material Composition (AREA)
- Paints Or Removers (AREA)
Abstract
The invention belongs to technical field of functional ceramics, more particularly to a kind of environment-friendly type Ultralow Water ceramic coating membrane and preparation method thereof, wherein the preparation method of this environment-friendly type Ultralow Water ceramic coating membrane includes: to prepare aqueous ceramic solution, dispersing agent, ceramic particle are first added in deionized water and is uniformly dispersed, joint seal agent is added after grinding；Aqueous ceramic slurry is prepared, i.e., thickener, binder and wetting agent are added into the aqueous ceramic solution；And preparation coating diaphragm, that is, it coats the aqueous ceramic slurry and dries.Preparation method of the invention in ceramic particle by being added joint seal agent, to block the gap of ceramic particle, water can be effectively prevented and penetrate into ceramics inside, reduce the water absorption of ceramic coating membrane, guarantee that ceramic coating membrane is in the state of low-water-content.
Description
Technical field
The present invention relates to technical field of functional ceramics, and in particular to a kind of environment-friendly type Ultralow Water ceramic coating membrane and its
Preparation method, solution and slurry.
Background technique
Since ceramic particle belongs to hard brittle material, it is easy in ceramic diaphragm and its own process of lapping is made in ceramics
Grain surface generates gap (such as micro-crack, crack, collision pit, collision notch), some gaps can even extend to ceramics
Intragranular portion.In this way in ceramic diaphragm use process, water can penetrate into ceramics inside along crizzle, increase ceramic diaphragm
Water imbibition.
The Ultralow Water ceramic coating membrane preparation process of the prior art is from reduction thickener, increases waterproofing agent isogonism
Degree reduces the water imbibition of ceramic coating, can not solve the problems, such as that crackle seeps water, therefore can not effectively control the aqueous of ceramic coating
Rate.
Summary of the invention
The object of the present invention is to provide a kind of environment-friendly type Ultralow Water ceramic coating membrane and preparation method thereof, solution and slurries
Material blocks the gap of ceramic particle by joint seal agent, to prevent water from penetrating into inside ceramic coating membrane when in use.
In order to solve the above-mentioned technical problems, the present invention provides a kind of preparation methods of ceramic coating membrane, comprising: preparation
Dispersing agent, ceramic particle are first added in deionized water and is uniformly dispersed, joint seal agent is then added for aqueous ceramic solution；System
Standby aqueous ceramic slurry, i.e., be added thickener, binder and wetting agent into the aqueous ceramic solution；And preparation coating every
Film coats the aqueous ceramic slurry and dries.
Further, the dispersing agent: ceramic particle: joint seal agent: the weight ratio of deionized water is 0.1-8:1-60:0.1-8:
1-80。
Further, the aqueous ceramic solution: thickener: binder: the weight ratio of wetting agent is 40-120:1-8:1-5:
0.1-4；And the solid content 30-55% of the aqueous ceramic slurry, viscosity 20-200cp.
Further, the joint seal agent is liquid, solid content 25%-60%；And the joint seal agent includes polypropylene
Acid esters substance.
Further, the dispersing agent includes acrylates substance.
Further, the thickener includes sodium carboxymethylcellulose, sodium hydroxyethlcellulose, in carboxymethyl cellulose ammonium
It is at least one.
Further, the binder includes polyacrylic acid, polymethylacrylic acid, polyacrylonitrile, ethylene-acrylic acid copolymer
One or more of object, butadiene-propylene acid copolymer, polyimides.
Further, the wetting agent includes polyether siloxane copolymers.
Further, the coating with a thickness of 1-3 μm；The temperature of the drying is 55-75 DEG C.
Another aspect, the present invention also provides a kind of ceramic coating membranes of foregoing preparation method preparation.
On the other hand, the present invention also provides a kind of ceramic coating membrane aqueous ceramic solution, by weight composition packet
It includes: dispersing agent: 0.1-8 parts；Ceramic particle: 1-60 parts；Joint seal agent: 0.1-8 parts；And deionized water: 1-80 parts.
In another aspect, the present invention also provides a kind of ceramic coating membrane aqueous ceramic slurries, comprising: thickener glues
Tie agent, wetting agent and foregoing aqueous ceramic solution；Wherein thickener: 1-8 parts by weight；Binder: 1-5 parts by weight；Profit
Humectant: 0.1-4 parts by weight；And aqueous ceramic solution: 40-120 parts by weight.
The invention has the advantages that preparation method of the invention by ceramic particle be added joint seal agent, with filling
And the gap of ceramic particle is blocked, water can be effectively prevent to penetrate into inside ceramic coating membrane when in use, reduce ceramic painting
The water absorption for covering diaphragm ensure that ceramic coating membrane is in the state of low-water-content.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the process flow chart of preparation method of the invention.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
Embodiment 1
As shown in Figure 1, the present embodiment 1 provides a kind of preparation method of ceramic coating membrane, include the following steps: step S1,
Aqueous ceramic solution is prepared, i.e., dispersing agent, ceramic particle are first added in deionized water and is uniformly dispersed, joint seal is then added
Agent；Step S2 prepares aqueous ceramic slurry, i.e., thickener, binder and wetting agent are added into the aqueous ceramic solution；With
And step S3, preparation coating diaphragm coat the aqueous ceramic slurry and dry.
Optionally, the dispersing agent: ceramic particle: joint seal agent: the weight ratio of deionized water is 0.1-8:1-60:0.1-8:
1-80.By said ratio can guarantee joint seal agent uniform fold in ceramic grain surface, and in whipping process enter ceramics
The gap of particle forms solid-filling in the gap of ceramic particle, the gap quantity of ceramic particle is reduced, to subtract after drying
The water absorption of few coating.
Optionally, the dispersing agent includes but is not limited to acrylates substance.
Optionally, the ceramic particle includes but is not limited to silica, aluminum oxide, titanium dioxide, tin oxide, oxygen
Change the combination of one or more of chromium, boehmite, magnesium dioxide, barium sulfate, zirconium oxide, calcium oxide or magnesium hydroxide.
Optionally, the joint seal agent is liquid, including but not limited to polyacrylate substance, solid content 25%-
60%.The joint seal agent needs of the application use in aqueous ceramic solution, need to match use with other components, if joint seal agent
Component ratio and too high solids content, the viscosity that will lead to joint seal agent is excessive, cannot be introduced into the gap of ceramic particle, can only be attached
In ceramic grain surface；Adhesion is smaller in this way, is easy to fall off during subsequent make and use from ceramic grain surface,
It is difficult to realize block the gap of ceramic particle, to reduce the water absorption of ceramic coating membrane.If the component ratio of joint seal agent and
Solid content is too low, then the viscosity that will lead to joint seal agent is too small, in subsequent preparation process, before especially toasting, from ceramics
The gap of particle table is flowed out, and the plugging effect in ceramic particle gap is caused to be deteriorated.
Optionally, the aqueous ceramic solution: thickener: binder: the weight ratio of wetting agent is 40-120:1-8:1-5:
0.1-4；And the solid content 30-55% of the aqueous ceramic slurry, viscosity 20-200cp.Consolidating for aqueous ceramic slurry contains
Amount and viscosity mainly pass through the weight ratio regulation of aqueous ceramic solution, thickener, binder and wetting agent, can also be added suitable
Amount deionized water is regulated and controled.When its viscosity is excessively high, ceramic particle is not easy to disperse, and joint seal agent cannot sufficiently connect with ceramic particle
Touching is easy to appear and omits gap, coating is caused to have certain water imbibition；If solid content is too low, the higher temperature longer time is needed
Drying course, influence coating efficiency；Therefore the solid content energy efficient balance of aqueous ceramic slurry applies layer absorbent and coating effect
Rate.In addition, slurry viscosity is too low, unseasoned coating high speed is easy flowing when coating, so that it is uneven to form coating；Viscosity is excessively high
When, slurry transfer, levelling are difficult when coating, be easy to cause that coating efficiency is low, coating is uneven；Therefore, aqueous ceramic slurry is viscous
Degree being capable of efficient balance levelling and coating efficiency.
Optionally, the thickener includes but is not limited to sodium carboxymethylcellulose, sodium hydroxyethlcellulose, carboxymethyl cellulose
At least one of plain ammonium.
Optionally, the binder includes but is not limited to polyacrylic acid, polymethylacrylic acid, polyacrylonitrile, ethylene-propylene
One or more of acid copolymer, butadiene-propylene acid copolymer, polyimides.
Optionally, the wetting agent includes being not limited to polyether siloxane copolymers.
Optionally, the coating with a thickness of 1-3 μm；The temperature of the drying is 55-75 DEG C.Specifically, using intaglio plate
Roll coating aqueous ceramic slurry forms ceramic coating membrane.Its coating thickness can line number by gravure roll, ink cell depth control
System；And its drying temperature can suitably be increased with the increase of coating thickness, to improve production efficiency.
Embodiment 2
On the basis of embodiment 1, the present embodiment 2 provide the ceramic coated of foregoing preparation method preparation a kind of every
Film.
Each component (such as dispersing agent, ceramic particle, joint seal agent, thickener, binder and wetting in the ceramic coating membrane
Agent etc.) content referring to the correspondence content in embodiment 1, details are not described herein.
It is discussed about the constituent content of ceramic coating membrane and specific preparation process referring to the correlation of embodiment 1, herein not
It repeats again.
Embodiment 3
On the basis of embodiment 1, the present embodiment 3 provides a kind of ceramic coating membrane aqueous ceramic solution, for making
Standby ceramic coating membrane.It includes: dispersing agent that its component forms by weight: 0.1-8 parts；Ceramic particle: 1-60 parts；Joint seal agent:
0.1-8 parts；And deionized water: 1-80 parts.
It is discussed about the concrete component of aqueous ceramic solution and specific proportion process referring to the correlation of embodiment 1, herein not
It repeats again.
Embodiment 4
On the basis of embodiment 3, the present embodiment 4 provides a kind of ceramic coating membrane aqueous ceramic slurry, for making
Standby ceramic coating membrane, comprising: thickener, binder, wetting agent and foregoing aqueous ceramic solution；Wherein thickener:
1-8 parts by weight；Binder: 1-5 parts by weight；Wetting agent: 0.1-4 parts by weight；And aqueous ceramic solution: 40-120 parts by weight.
It is discussed about the concrete component of aqueous ceramic solution and specific proportion process referring to the correlation of embodiment 1, herein not
It repeats again.
In conclusion this ceramic coating membrane and preparation method thereof, aqueous ceramic solution and aqueous ceramic slurry by
Joint seal agent is added in ceramic particle, by joint seal agent baking and curing in ceramics while drying ceramic coating membrane during the preparation process
Inside the gap of particle and surface can effectively prevent water to penetrate into ceramics when in use and apply for blocking the gap of ceramic particle
It covers inside diaphragm, reduces the water absorption of ceramic coating membrane, ensure that ceramic coating membrane is in the state of low-water-content.
Embodiment 5
(1) aqueous ceramic solution is prepared.
Addition 0.1kg acrylates substance, 1kg SiO 2-ceramic particle are uniformly dispersed in 1kg deionized water,
0.1kg polyacrylate substance is added after grinding, is dispersed with stirring uniformly, polyacrylate substance is made sufficiently to be covered on ceramics
Particle surface obtains aqueous ceramic solution.
(2) aqueous ceramic slurry is prepared.
Take addition 10g sodium carboxymethylcellulose, 10g polyacrylic acid, 1g polyether-silicone in 400g aqueous ceramic solution total
Polymers is uniformly dispersed, and obtains aqueous ceramic slurry；Make the solid content 30% in slurry, viscosity 20cp.
(3) preparation coating diaphragm.
Appropriate aqueous ceramic slurry is taken to be coated using gravure roll, coating thickness is the line number by gravure roll, ink cell
1 μm of deep-controlled coating layer thickness, drying temperature are 55 DEG C.
Embodiment 6
(1) aqueous ceramic solution is prepared.
8kg acrylates substance, 20kg aluminum oxide ceramic particle and 40kg bis- are added in 80kg deionized water
Titanium oxide ceramics particle is uniformly dispersed, and 8kg polyacrylate substance is added after grinding, is dispersed with stirring uniformly, makes polyacrylic acid
Ester is sufficiently covered on ceramic grain surface, obtains aqueous ceramic solution.
(2) aqueous ceramic slurry is prepared.
It takes and 30g sodium hydroxyethlcellulose and the poly- first of 50g carboxymethyl cellulose ammonium, 30g is added in 1200g aqueous ceramic solution
Base acrylic acid and 20g polyimides, 40g polyether siloxane copolymers, are uniformly dispersed, obtain aqueous ceramic slurry；Make in slurry
Solid content 55%, viscosity 200cp.
(3) preparation coating diaphragm.
Appropriate aqueous ceramic slurry is taken to be coated using gravure roll, coating thickness is the line number by gravure roll, ink cell
3 μm of deep-controlled coating layer thickness, drying temperature are 75 DEG C.
Embodiment 7
(1) aqueous ceramic solution is prepared.
Addition 5kg acrylates substance, 30kg SiO 2-ceramic particle are uniformly dispersed in 25kg deionized water,
6kg polyacrylate substance is added after grinding, is dispersed with stirring uniformly, polyacrylate substance is made sufficiently to be covered on ceramics
Grain surface, obtains aqueous ceramic solution.
(2) aqueous ceramic slurry is prepared.
Take addition 50g sodium carboxymethylcellulose, 30g polyacrylic acid, 20g polyether-silicone in 800g aqueous ceramic solution
Copolymer is uniformly dispersed, and obtains aqueous ceramic slurry；Make the solid content 40% in slurry, viscosity 100cp.
(3) preparation coating diaphragm.
Appropriate aqueous ceramic slurry is taken to be coated using gravure roll, coating thickness is the line number by gravure roll, ink cell
2 μm of deep-controlled coating layer thickness, drying temperature are 60 DEG C.
Embodiment 8
(1) aqueous ceramic solution is prepared.
Addition 2kg acrylates substance, 12kg SiO 2-ceramic particle are uniformly dispersed in 50kg deionized water,
2kg polyacrylate substance is added after grinding, is dispersed with stirring uniformly, polyacrylate substance is made sufficiently to be covered on ceramics
Grain surface, obtains aqueous ceramic solution.
(2) aqueous ceramic slurry is prepared.
Take addition 40g sodium carboxymethylcellulose, 40g polyacrylic acid, 30g polyether-silicone in 600g aqueous ceramic solution
Copolymer is uniformly dispersed, and obtains aqueous ceramic slurry；Make the solid content 35% in slurry, viscosity 50cp.
(3) preparation coating diaphragm.
Appropriate aqueous ceramic slurry is taken to be coated using gravure roll, coating thickness is the line number by gravure roll, ink cell
2.5 μm of deep-controlled coating layer thickness, drying temperature are 65 DEG C.
Embodiment 9
(1) aqueous ceramic solution is prepared.
Addition 1kg acrylates substance, 10kg SiO 2-ceramic particle are uniformly dispersed in 35kg deionized water,
1kg polyacrylate substance is added after grinding, is dispersed with stirring uniformly, polyacrylate substance is made sufficiently to be covered on ceramics
Grain surface, obtains aqueous ceramic solution.
(2) aqueous ceramic slurry is prepared.
Take addition 15g sodium carboxymethylcellulose, 18g polyacrylic acid, 10g polyether-silicone in 500g aqueous ceramic solution
Copolymer is uniformly dispersed, and obtains aqueous ceramic slurry；Make the solid content 35% in slurry, viscosity 150cp.
(3) preparation coating diaphragm.
Appropriate aqueous ceramic slurry is taken to be coated using gravure roll, coating thickness is the line number by gravure roll, ink cell
2 μm of deep-controlled coating layer thickness, drying temperature are 65 DEG C.
Embodiment 10
(1) aqueous ceramic solution is prepared.
0.5kg acrylates substance, the dispersion of 55kg SiO 2-ceramic particle are added in 60kg deionized water
It is even, 0.6kg polyacrylate substance is added after grinding, is dispersed with stirring uniformly, is covered on polyacrylate substance sufficiently
Ceramic grain surface obtains aqueous ceramic solution.
(2) aqueous ceramic slurry is prepared.
Take addition 70g sodium carboxymethylcellulose, 45g polyacrylic acid, 35g polyether-silicone in 1000g aqueous ceramic solution
Copolymer is uniformly dispersed, and obtains aqueous ceramic slurry；Make the solid content 45% in slurry, viscosity 180cp.
(3) preparation coating diaphragm.
Appropriate aqueous ceramic slurry is taken to be coated using gravure roll, coating thickness is the line number by gravure roll, ink cell
1.5 μm of deep-controlled coating layer thickness, drying temperature are 60 DEG C.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (12)
1. a kind of preparation method of ceramic coating membrane characterized by comprising
Aqueous ceramic solution is prepared, i.e., dispersing agent, ceramic particle are first added in deionized water and is uniformly dispersed, is added after grinding
Joint seal agent；
Aqueous ceramic slurry is prepared, i.e., thickener, binder and wetting agent are added into the aqueous ceramic solution；And
Preparation coating diaphragm, that is, coat the aqueous ceramic slurry and dry.
2. preparation method according to claim 1, which is characterized in that
The dispersing agent: ceramic particle: joint seal agent: the weight ratio of deionized water is 0.1-8:1-60:0.1-8:1-80.
3. preparation method according to claim 1, which is characterized in that
The aqueous ceramic solution: thickener: binder: the weight ratio of wetting agent is 40-120:1-8:1-5:0.1-4；And
The solid content 30-55% of the aqueous ceramic slurry, viscosity 20-200cp.
4. preparation method according to claim 1, which is characterized in that
The joint seal agent is liquid, solid content 25%-60%；And
The joint seal agent includes polyacrylate substance.
5. preparation method according to claim 1, which is characterized in that
The dispersing agent includes acrylates substance.
6. preparation method according to claim 1, which is characterized in that
The thickener includes at least one of sodium carboxymethylcellulose, sodium hydroxyethlcellulose, carboxymethyl cellulose ammonium.
7. preparation method according to claim 1, which is characterized in that
The binder includes polyacrylic acid, polymethylacrylic acid, polyacrylonitrile, ethylene-acrylic acid copolymer, butadiene-the third
One or more of olefin(e) acid copolymer, polyimides.
8. preparation method according to claim 1, which is characterized in that
The wetting agent includes polyether siloxane copolymers.
9. preparation method according to claim 1, which is characterized in that
The coating with a thickness of 1-3 μm；
The temperature of the drying is 55-75 DEG C.
10. a kind of ceramic coating membrane of preparation method preparation as described in claim 1.
11. a kind of ceramic coating membrane aqueous ceramic solution, which is characterized in that composition includes: by weight
Dispersing agent: 0.1-8 parts；
Ceramic particle: 1-60 parts；
Joint seal agent: 0.1-8 parts；And
Deionized water: 1-80 parts.
12. a kind of ceramic coating membrane aqueous ceramic slurry characterized by comprising
Thickener, binder, wetting agent and aqueous ceramic solution as claimed in claim 11；Wherein
Thickener: 1-8 parts by weight；
Binder: 1-5 parts by weight；
Wetting agent: 0.1-4 parts by weight；And
Aqueous ceramic solution: 40-120 parts by weight.
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| CN201910557980.8A CN110212139A (en) | 2019-06-26 | 2019-06-26 | Environment-friendly type Ultralow Water ceramic coating membrane and preparation method, solution and slurry |
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| CN201910557980.8A CN110212139A (en) | 2019-06-26 | 2019-06-26 | Environment-friendly type Ultralow Water ceramic coating membrane and preparation method, solution and slurry |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111192992A (en) * | 2020-01-20 | 2020-05-22 | 武汉中兴创新材料技术有限公司 | Preparation method and device of ultrathin coating diaphragm |
| CN111341974A (en) * | 2020-03-13 | 2020-06-26 | 江苏厚生新能源科技有限公司 | PVDF (polyvinylidene fluoride) coated diaphragm and preparation method thereof, PVDF coated layer and lithium battery |
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| CN109167008A (en) * | 2018-09-05 | 2019-01-08 | 江苏安瑞达新材料有限公司 | Lithium battery low moisture ceramic diaphragm preparation method, aqueous slurry and ceramic diaphragm |
| CN109378431A (en) * | 2018-10-09 | 2019-02-22 | 河北金力新能源科技股份有限公司 | PMMA coating paste, PMMA composite coating diaphragm and preparation method thereof |
| CN109461867A (en) * | 2018-10-18 | 2019-03-12 | 苏州捷力新能源材料有限公司 | A kind of multilayer water system PVDF lithium ion battery separator and preparation method |
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| CN108539095A (en) * | 2018-04-03 | 2018-09-14 | 上海恩捷新材料科技股份有限公司 | Cell coating film slurry, battery diaphragm, secondary cell and preparation method thereof |
| CN109167008A (en) * | 2018-09-05 | 2019-01-08 | 江苏安瑞达新材料有限公司 | Lithium battery low moisture ceramic diaphragm preparation method, aqueous slurry and ceramic diaphragm |
| CN109378431A (en) * | 2018-10-09 | 2019-02-22 | 河北金力新能源科技股份有限公司 | PMMA coating paste, PMMA composite coating diaphragm and preparation method thereof |
| CN109461867A (en) * | 2018-10-18 | 2019-03-12 | 苏州捷力新能源材料有限公司 | A kind of multilayer water system PVDF lithium ion battery separator and preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111192992A (en) * | 2020-01-20 | 2020-05-22 | 武汉中兴创新材料技术有限公司 | Preparation method and device of ultrathin coating diaphragm |
| CN111192992B (en) * | 2020-01-20 | 2022-04-22 | 武汉中兴创新材料技术有限公司 | Preparation method and device of ultrathin coating diaphragm |
| CN111341974A (en) * | 2020-03-13 | 2020-06-26 | 江苏厚生新能源科技有限公司 | PVDF (polyvinylidene fluoride) coated diaphragm and preparation method thereof, PVDF coated layer and lithium battery |
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Application publication date: 20190906 |