CN108574080A - A kind of diaphragm preprocess method and device - Google Patents
A kind of diaphragm preprocess method and device Download PDFInfo
- Publication number
- CN108574080A CN108574080A CN201810739466.1A CN201810739466A CN108574080A CN 108574080 A CN108574080 A CN 108574080A CN 201810739466 A CN201810739466 A CN 201810739466A CN 108574080 A CN108574080 A CN 108574080A
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- Prior art keywords
- diaphragm
- conduction medium
- heat
- liquid heat
- nip rolls
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 36
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims abstract description 26
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 24
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical class CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 18
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims abstract description 16
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 235000019441 ethanol Nutrition 0.000 claims abstract description 12
- 239000008367 deionised water Substances 0.000 claims abstract description 8
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical group O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical class CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000007664 blowing Methods 0.000 claims abstract description 3
- WFKAJVHLWXSISD-UHFFFAOYSA-N isobutyramide Chemical compound CC(C)C(N)=O WFKAJVHLWXSISD-UHFFFAOYSA-N 0.000 claims abstract 2
- 238000010438 heat treatment Methods 0.000 claims description 13
- 229920002125 Sokalan® Polymers 0.000 claims description 6
- 239000004584 polyacrylic acid Substances 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 5
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 4
- 229920000058 polyacrylate Polymers 0.000 claims description 3
- 150000001408 amides Chemical class 0.000 claims description 2
- 229920003123 carboxymethyl cellulose sodium Polymers 0.000 claims description 2
- 229940063834 carboxymethylcellulose sodium Drugs 0.000 claims description 2
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- 125000005909 ethyl alcohol group Chemical group 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 abstract description 10
- 238000000576 coating method Methods 0.000 abstract description 10
- 239000012528 membrane Substances 0.000 abstract description 6
- 239000002002 slurry Substances 0.000 description 17
- 239000000919 ceramic Substances 0.000 description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 210000004379 membrane Anatomy 0.000 description 5
- DLFVBJFMPXGRIB-UHFFFAOYSA-N Acetamide Chemical compound CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 description 4
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 4
- 229940068984 polyvinyl alcohol Drugs 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229910010272 inorganic material Inorganic materials 0.000 description 3
- 239000011147 inorganic material Substances 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 210000002469 basement membrane Anatomy 0.000 description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 238000003851 corona treatment Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 2
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007581 slurry coating method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to a kind of pretreated method and apparatus of diaphragm.The method includes：A) base material diaphragm is unreeled from emptying roller, b) diaphragm after blowing is subjected to the effect of liquid heat-conduction medium by intermediate nip rolls, c) diaphragm being subjected to after liquid heat-conduction medium acts on is wound to material receiving roller, wherein, the heat-conduction medium is deionized water, ethyl alcohol, propyl alcohol, butanol, N methyl pyrrolidones, dimethylacetylamide, N, N dimethylformamides, dimethyl sulfoxide (DMSO) at least one, wherein, the temperature of the heat-conduction medium is 20 80 DEG C.According to the method for the present invention, pass through the pre-treated membrane in liquid heat-conduction medium, the planarization of diaphragm can be improved at relatively low temperatures, and, it is modified by the surface to diaphragm of liquid heat-conduction medium, dyne value that diaphragm can be improved, so as to improve diaphragm for the wellability of follow-up coating, to obtain preferably coating effect.
Description
Technical field
This application involves a kind of diaphragm preprocess method and devices.Specifically, being situated between using liquid this application involves a kind of
The method and apparatus of matter pre-treated membrane.
Background technology
With the development of science and technology, demand of the mankind to the energy is also higher and higher, in the energy for portable unit, lithium from
Sub- battery the advantages that its high-energy density to have received widespread attention.Diaphragm as one of the core material in battery,
Property can largely influence the performance of lithium ion battery.
The more do the more big with the capacity of lithium ion battery, safety also gradually causes the attention of people.In diaphragm table
Face coating inorganic material can effectively improve diaphragm security performance.
However, since conventional membrane surface is hydrophobic, in coating inorganic material, wellability is poor, easily goes out
Existing holiday applies not first-class bad phenomenon.
Moreover, because base material diaphragm makes membrane process itself affect, it is bad to easily cause diaphragm rippled edge, in coating inorganic material
When, it may appear that holiday bad phenomenon, and coat metacneme and may crimp causes diaphragm occur to have wave, out-of-flatness, after cutting
The problems such as cambered.
CN203381189U discloses a kind of device for battery diaphragm sided corona treatment, corona equipment is used, to change
Kind basement membrane hydrophily improves a dyne value, makes aqueous slurry that can effectively spread over membrane surface after coating, drying.
CN205588622U discloses a kind of device improving diaphragm rippled edge, hot-stretch equipment is used, as heat
Hot-stretch is carried out in the air of transmitting medium, so as to improve the planarization of diaphragm.
Invention content
Technical problem
CN203381189U PE or PP are aoxidized using sided corona treatment in principle with generate hydrophilic-OH or-
COOH is a kind of destructive processing, may influence other properties of diaphragm, and CN205588622U uses air as thermal medium
It is less efficient, to reach flattening effect, it is necessary to apply higher temperature, to which there are certain destructions to basement membrane, therefore, still
So need the method for the wellability and planarization of new improvement diaphragm.
Technical solution
To solve the above-mentioned problems, the present invention provides a kind of pretreated methods of diaphragm and a kind of diaphragm that is used for pre-process
Device.
According to an aspect of the present invention, a kind of pretreated method of diaphragm is provided, this method includes：
A) base material diaphragm is unreeled from emptying roller,
B) diaphragm after blowing is subjected to the effect of liquid heat-conduction medium by intermediate nip rolls,
C) diaphragm being subjected to after liquid heat-conduction medium acts on is wound to material receiving roller,
Wherein, the heat-conduction medium is deionized water, ethyl alcohol, propyl alcohol, butanol, N-Methyl pyrrolidone (NMP), diformazan
At least one of yl acetamide (DMAc), n,N-Dimethylformamide (DMF), dimethyl sulfoxide (DMSO) (DMSO),
Wherein, the temperature of the heat-conduction medium is 20-80 DEG C.
Preferably, in step a)-c) in unwinding tension be 5-60N, more preferably 10-20N, retractable volume speed be 5-
100m/min has 3-15 intermediate nip rolls in step b),
Preferably, described 3-15 intermediate nip rolls is fully immersed in liquid heat-conduction medium, emptying roller and material receiving roller
Outside liquid heat-conduction medium, or
Preferably, the part (preferably 50%-70%) in described 3-15 intermediate nip rolls is immersed in liquid heat transfer
In medium, nip rolls, emptying roller and material receiving roller are outside liquid heat-conduction medium among another part.
Preferably, the intermediate nip rolls outside liquid heat-conduction medium is located in baking oven, and the temperature of baking oven is preferably 35-70
℃。
Preferably, the heat-conduction medium is ethyl alcohol or propyl alcohol.
Preferably, the temperature of the heat-conduction medium is 40-60 DEG C.
Preferably, it can also be dissolved with selected from sodium carboxymethylcellulose, polyacrylic acid, poly- third in the heat-conduction medium
Olefin(e) acid salt, polyvinyl alcohol it is one or more.
According to an aspect of the present invention, it provides one kind and being used for the pretreated device of diaphragm, which includes：
Stretching device, it includes emptying roller, intermediate nip rolls, material receiving rollers；
Heating device, the liquid heat-conduction medium it includes shell and in shell,
Wherein, the liquid heat-conduction medium is deionized water, ethyl alcohol, propyl alcohol, butanol, N-Methyl pyrrolidone, diformazan
Yl acetamide, n,N-Dimethylformamide, at least one of dimethyl sulfoxide (DMSO), wherein the temperature of the heat-conduction medium is 20-
80 DEG C,
Wherein, at least one intermediate nip rolls is located in liquid heat-conduction medium, and emptying roller and material receiving roller are passed in liquid heat
It leads outside medium.
Preferably, the stretching device includes 3-15 intermediate nip rolls.
Preferably, described 3-15 intermediate nip rolls is fully immersed in the heat-conduction medium, emptying roller and material receiving roller
Outside the liquid heat-conduction medium, or
Preferably, the part (preferably 50%-70%) in described 3-15 intermediate nip rolls is immersed in liquid heat transfer
In medium, nip rolls is outside liquid heat-conduction medium among another part.
Preferably, the heating device further includes baking oven, and the intermediate nip rolls outside liquid heat-conduction medium is located at institute
It states in baking oven.
Preferably, in the liquid heat-conduction medium can also be dissolved with selected from sodium carboxymethylcellulose, polyacrylic acid,
Polyacrylate, polyvinyl alcohol it is one or more.
It according to the method for the present invention, can be in relatively low temperature by the pre-treated membrane in liquid heat-conduction medium
The lower planarization for improving diaphragm can improve reaching for diaphragm moreover, the surface to diaphragm by liquid heat-conduction medium is modified
Because of value, so as to improve diaphragm for the wellability of follow-up coating, to obtain preferably coating effect.
Description of the drawings
Fig. 1 is the schematic diagram for the pretreated device of diaphragm according to embodiment of the present invention.
Fig. 2 is the schematic diagram for the pretreated device of diaphragm according to another implementation of the invention.
Fig. 3 is the schematic diagram for the pretreated device of diaphragm of another embodiment according to the present invention.
Reference numeral：
110：Emptying roller 120：Intermediate nip rolls
130：Material receiving roller 210：Shell
220：Heat-conduction medium 230：Heating system
240：Baking oven
Specific implementation mode
To make this field that there are the personnel of general knowledge can be appreciated that the features of the present invention and effect, below sincerely with regard to specification and
The term and term referred in claim carries out general explanation and definition.Unless otherwise specified, otherwise make in text
All technologies and scientific words, the ordinary meaning all understood for the present invention with those skilled in the art, when
When having collision scenario, it should be subject to the definition of this specification.
Herein, term "comprising", " comprising ", " having ", " containing " or other any similar terms belong to open
Property conjunction (open-ended transitional phrase), be intended to cover nonexcludability include object.For example,
A composition or product containing plural element are not limited in these elements listed herein, but may also include not
Be expressly recited but the usually intrinsic other element of the composition or product.In addition to this, unless expressly stated to the contrary,
Otherwise term "or" refers to the "or" of covering property, without referring to exclusive "or".For example, following any type situation is satisfied by
Condition " A or B "：A is true (or presence) and B is pseudo- (or being not present), A is pseudo- (or being not present) and B is true (or presence), A and B
It is true (or presence).In addition, herein, the deciphering of term "comprising", " comprising ", " having ", " containing " should be regarded as having had
Body disclose and cover simultaneously " by ... formed " and closed or semi-enclosed conjunction such as " substantially by ... formed ".
Detailed description below is substantially only illustrative, and be not intended to the limitation present invention and application thereof.In addition, herein
It is not limited by any theory described in the aforementioned prior art or invention content or detailed description below or embodiment
System.
Fig. 1 shows the schematic diagram of diaphragm pretreatment unit according to embodiment of the present invention.In Fig. 1, every
Film pretreatment unit includes stretching device and heating device, and stretching device includes emptying roller 110, intermediate nip rolls 120 and rewinding
Roller 130, heating device include shell 210, and heat-conduction medium 220 and heating system 230 are filled in shell in Fig. 1
Heat-conduction medium 220, to make intermediate nip rolls 120 be immersed in heat-conduction medium 220.
Wherein, the heat-conduction medium is deionized water, ethyl alcohol, propyl alcohol, butanol, N-Methyl pyrrolidone, dimethyl second
Amide, n,N-Dimethylformamide, at least one of dimethyl sulfoxide (DMSO), wherein including not necessarily to be selected from carboxymethyl cellulose
Sodium, polyacrylic acid, polyacrylate, polyvinyl alcohol it is one or more.
Fig. 2 shows the schematic diagrames of diaphragm pretreatment unit according to another implementation of the invention.In fig. 2,
It is located at other than heating device there are two intermediate nip rolls 120.
Fig. 3 shows the schematic diagram of the diaphragm pretreatment unit of another embodiment according to the present invention.In figure 3,
Two intermediate nip rolls other than heating device are further located in baking oven 240.
The solution of the present invention can also be realized by other means, for example, can be filled out in the shell of the heating device in Fig. 1
The heat-conduction medium of about half is filled, its liquid level can submerge the intermediate nip rolls of following 3 as a result,.
The present invention will be further described by embodiment below, however it will be appreciated by those skilled in the art that these are implemented
Example is only used for purpose of explanation, and is not intended to limit the scope of the invention, and the scope of the present invention is with the attached claims
Subject to book.
Prepare embodiment 1：The preparation of ceramic slurry
It is deionized water, aluminium oxide, butadiene-styrene rubber, polyacrylamide, ratio 70% by the ingredient of ceramic slurry：
27%：2.7%：0.3% (weight ratio).
Aluminium oxide and butadiene-styrene rubber are added in deionized water first, in 30 DEG C, the row of revolution 20rpm, rotation 1200rpm
2h is stirred in planetary ball mill, then adds polyacrylamide, in 30 DEG C, the planetary ball of revolution 20rpm, rotation 1200rpm
0.5h is stirred in grinding machine, to obtain ceramic slurry.
Embodiment 1
Ethanol liquid (solvent) is filled in diaphragm pretreatment unit shown in Fig. 1, wherein it is (molten to be also added into polyacrylic acid
Matter concentration 1%), that is, constitute heat-conduction medium.By the PE diaphragms of 12 μ m-thicks purchased from Suzhou Jie Li new energy materials Co., Ltd
It is placed in the stretching device of Fig. 1, is unreeled by emptying roller, then wound to material receiving roller after intermediate nip rolls.It is by heating
The heat-conduction medium formed containing the ethanol solution of 1% polyacrylic acid is heated to 40 DEG C by system, is adjusted stretching device and is made folding and unfolding
The tension for licking journey is 15N, and retractable volume speed is 30m/min.
Embodiment 2
In addition to use device as described in Example 2, in diaphragm pretreatment unit fill ethyl alcohol+poly-vinyl alcohol solution with
Outside, diaphragm is pre-processed in a manner of identical with described in embodiment 1.
Then processed diaphragm is coated with preparing the ceramic slurry described in embodiment 1.
Embodiment 3
Other than being 50 DEG C by the temperature setting of heat-conduction medium, to diaphragm in a manner of identical with described in embodiment 1
It is pre-processed.
Then processed diaphragm is coated with preparing the ceramic slurry described in embodiment 1.
Embodiment 4
In addition to by the tension adjustment of retractable volume process be 10N other than, in a manner of identical with described in embodiment 1 to diaphragm into
Row pretreatment.
Then processed diaphragm is coated with preparing the ceramic slurry described in embodiment 1.
Embodiment 5
Other than retractable volume speed is adjusted to 50m/min, diaphragm is carried out in a manner of identical with described in embodiment 1
Pretreatment.
Then processed diaphragm is coated with preparing the ceramic slurry described in embodiment 1.
Embodiment 6
Other than replacing 12 μm of diaphragms with 9 μm of diaphragms, diaphragm is located in advance in a manner of identical with described in embodiment 1
Reason.
Then processed diaphragm is coated with preparing the ceramic slurry described in embodiment 1.
Embodiment 7
Other than using ethyl alcohol (80%)+DMAC (20%) as heat-conduction medium, with the identical side with described in embodiment 1
Formula pre-processes diaphragm.
Then processed diaphragm is coated with preparing the ceramic slurry described in embodiment 1.
Comparative example 1
In addition to not adding heat-conduction medium, only carried out other than 40 DEG C of heat bakings with baking oven, with the identical side with described in embodiment 1
Formula pre-processes diaphragm.
Then processed diaphragm is coated with preparing the ceramic slurry described in embodiment 1.
Comparative example 2
Diaphragm is directly coated with preparing the ceramic slurry described in embodiment 1 without hot-stretch device..
Comparative example 3
Other than being 20 DEG C by the temperature setting of the heat-conduction medium in embodiment 1, with identical with described in embodiment 1
Mode pre-processes diaphragm.
Then processed diaphragm is coated with preparing the ceramic slurry described in embodiment 1.
EXPERIMENTAL EXAMPLE
Measuring diaphragm flap height by the following method：
Rippled edge tester measures：Diaphragm flap height is read using the fixture clamping 1.5m length diaphragms of 3N.The value is got over
Small better, the bigger flap of value easily leads to more greatly bad coating phenomenon.
Dyne value：Measured using dyne pen, using dyne pen on diaphragm standardized road, reading.The value is bigger, then gets over
Conducive to coating.
Slurry is shunk：Visually.
Diaphragm flap height, dyne value and the slurry listed in table 1 in embodiment 1-7 and comparative example 1-3 is shunk
The result of test.
[table 1]
From the results shown in Table 1, the pretreated method of diaphragm according to the present invention can effectively improve diaphragm
Planarization improves dyne value of diaphragm, and without slurry shrinkage phenomenon when slurry coating.And without the comparison of heating stretch processing
The flap of example 1~3 does not improve substantially, and 1~2 dyne of value of comparative example without heat-conduction medium is substantially without improving and lead to slurry
Contraction shows, that is, holiday occurs.
Although giving the illustrative embodiment of the present invention, those skilled in the art in embodiment 1 and embodiment 2
It is appreciated that for the purpose of the present invention, acceptable there are many other embodiments.
Claims (10)
1. a kind of pretreated method of diaphragm, this method include：
A) base material diaphragm is unreeled from emptying roller,
B) diaphragm after blowing is subjected to the effect of liquid heat-conduction medium by intermediate nip rolls,
C) diaphragm being subjected to after liquid heat-conduction medium acts on is wound to material receiving roller,
Wherein, the heat-conduction medium is deionized water, ethyl alcohol, propyl alcohol, butanol, N-Methyl pyrrolidone, dimethylacetylamide,
N,N-Dimethylformamide, at least one of dimethyl sulfoxide (DMSO),
Wherein, the temperature of the heat-conduction medium is 20-80 DEG C.
2. according to the method described in claim 1, wherein, in step a)-c) in unwinding tension be 5-60N, more preferably 10-
20N, retractable volume speed are 5-100m/min, there is 3-15 intermediate nip rolls in step b).
3. according to the method described in claim 1, wherein, described 3-15 intermediate nip rolls is fully immersed in liquid heat transfer Jie
In matter, emptying roller and material receiving roller are outside liquid heat-conduction medium.
4. according to the method described in claim 1, wherein, the part in described 3-15 intermediate nip rolls is immersed in liquid heat
In transmitting medium, nip rolls, emptying roller and material receiving roller are outside liquid heat-conduction medium among another part.
5. according to the method described in claim 4, wherein, the intermediate nip rolls outside liquid heat-conduction medium is located in baking oven,
The temperature of baking oven is preferably 35-70 DEG C.
6. according to the method described in claim 1, wherein, the heat-conduction medium is ethyl alcohol or propyl alcohol, and the heat transfer is situated between
The temperature of matter is 40-60 DEG C.
7. according to the method described in claim 1, wherein, being also dissolved in the heat-conduction medium and being selected from carboxymethyl cellulose
Sodium, polyacrylic acid, polyacrylate, polyvinyl alcohol it is one or more.
8. one kind being used for the pretreated device of diaphragm, which includes：
Stretching device, it includes emptying roller, intermediate nip rolls, material receiving rollers；
Heating device, the liquid heat-conduction medium it includes shell and in shell,
Wherein, the liquid heat-conduction medium is deionized water, ethyl alcohol, propyl alcohol, butanol, N-Methyl pyrrolidone, dimethyl second
Amide, n,N-Dimethylformamide, at least one of dimethyl sulfoxide (DMSO),
Wherein, the temperature of the heat-conduction medium is 20-80 DEG C,
Wherein, at least one intermediate nip rolls is located in liquid heat-conduction medium, and emptying roller and material receiving roller are situated between in liquid heat transfer
Outside matter.
9. device according to claim 8, wherein the heating device further includes baking oven, and outside heat-conduction medium
Intermediate nip rolls is located in the baking oven.
10. device according to claim 8, in the stretching device, the intermediate nip rolls of 50%-60% is situated between in heat transfer
In matter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810739466.1A CN108574080A (en) | 2018-07-06 | 2018-07-06 | A kind of diaphragm preprocess method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810739466.1A CN108574080A (en) | 2018-07-06 | 2018-07-06 | A kind of diaphragm preprocess method and device |
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| Publication Number | Publication Date |
|---|---|
| CN108574080A true CN108574080A (en) | 2018-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810739466.1A Pending CN108574080A (en) | 2018-07-06 | 2018-07-06 | A kind of diaphragm preprocess method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584796A (en) * | 2019-07-03 | 2020-08-25 | 河北金力新能源科技股份有限公司 | Composite coating diaphragm and preparation method and application thereof |
| CN116960433A (en) * | 2023-09-21 | 2023-10-27 | 海目星激光智能装备（江苏）有限公司 | Diaphragm pressing plate mechanism and lamination machine |
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| US20020148774A1 (en) * | 2001-02-06 | 2002-10-17 | I-Fan Wang | Asymmetric hydrophilic membrane by grafting |
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| CN111584796A (en) * | 2019-07-03 | 2020-08-25 | 河北金力新能源科技股份有限公司 | Composite coating diaphragm and preparation method and application thereof |
| CN116960433A (en) * | 2023-09-21 | 2023-10-27 | 海目星激光智能装备（江苏）有限公司 | Diaphragm pressing plate mechanism and lamination machine |
| CN116960433B (en) * | 2023-09-21 | 2023-12-12 | 海目星激光智能装备（江苏）有限公司 | Diaphragm pressing plate mechanism and lamination machine |
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