CN104766977B - Nitrocellulose film applied to power cell positive plates and preparation method thereof - Google Patents
Nitrocellulose film applied to power cell positive plates and preparation method thereof Download PDFInfo
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- CN104766977B CN104766977B CN201510157321.7A CN201510157321A CN104766977B CN 104766977 B CN104766977 B CN 104766977B CN 201510157321 A CN201510157321 A CN 201510157321A CN 104766977 B CN104766977 B CN 104766977B
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- 229920001220 nitrocellulos Polymers 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title claims abstract description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000000020 Nitrocellulose Substances 0.000 claims abstract description 41
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229920000609 methyl cellulose Polymers 0.000 claims abstract description 14
- 239000001923 methylcellulose Substances 0.000 claims abstract description 14
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 11
- 239000011347 resin Substances 0.000 claims abstract description 11
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract 2
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract 2
- 239000010408 film Substances 0.000 claims description 66
- 239000000243 solution Substances 0.000 claims description 46
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 25
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 21
- 239000003085 diluting agent Substances 0.000 claims description 19
- 239000000839 emulsion Substances 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 17
- ZEMPKEQAKRGZGQ-AAKVHIHISA-N 2,3-bis[[(z)-12-hydroxyoctadec-9-enoyl]oxy]propyl (z)-12-hydroxyoctadec-9-enoate Chemical compound CCCCCCC(O)C\C=C/CCCCCCCC(=O)OCC(OC(=O)CCCCCCC\C=C/CC(O)CCCCCC)COC(=O)CCCCCCC\C=C/CC(O)CCCCCC ZEMPKEQAKRGZGQ-AAKVHIHISA-N 0.000 claims description 16
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 15
- 229950000845 politef Drugs 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 12
- 238000002604 ultrasonography Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 8
- 239000011259 mixed solution Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 239000010409 thin film Substances 0.000 claims description 8
- 229920000180 alkyd Polymers 0.000 claims description 7
- 229920003180 amino resin Polymers 0.000 claims description 7
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 6
- 238000007654 immersion Methods 0.000 claims description 6
- 238000007605 air drying Methods 0.000 claims description 5
- 238000000498 ball milling Methods 0.000 claims description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical group O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims 1
- 229940058401 polytetrafluoroethylene Drugs 0.000 claims 1
- 235000010981 methylcellulose Nutrition 0.000 abstract description 12
- 239000013543 active substance Substances 0.000 abstract description 11
- -1 polytetrafluoroethylene Polymers 0.000 abstract description 3
- 239000004359 castor oil Substances 0.000 abstract 1
- 235000019438 castor oil Nutrition 0.000 abstract 1
- 230000002708 enhancing effect Effects 0.000 abstract 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 10
- 239000012528 membrane Substances 0.000 description 7
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical group [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 5
- 229920002678 cellulose Polymers 0.000 description 4
- 239000001913 cellulose Substances 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 238000001291 vacuum drying Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 229920002301 cellulose acetate Polymers 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- OXHNLMTVIGZXSG-UHFFFAOYSA-N 1-Methylpyrrole Chemical class CN1C=CC=C1 OXHNLMTVIGZXSG-UHFFFAOYSA-N 0.000 description 1
- MERJTCXDDLWWSK-UHFFFAOYSA-N 1-methylpyrrole pyrrolidin-2-one Chemical compound CN1C=CC=C1.N1C(CCC1)=O MERJTCXDDLWWSK-UHFFFAOYSA-N 0.000 description 1
- 235000004443 Ricinus communis Nutrition 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- YADSGOSSYOOKMP-UHFFFAOYSA-N lead dioxide Inorganic materials O=[Pb]=O YADSGOSSYOOKMP-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000012360 testing method Methods 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
- H01M10/12—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/14—Electrodes for lead-acid accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/14—Electrodes for lead-acid accumulators
- H01M4/16—Processes of manufacture
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Cell Separators (AREA)
Abstract
The invention discloses a nitrocellulose film applied to power cell positive plates and a preparation method thereof. The nitrocellulose film is prepared from the following components in percentage by mass: 30-45% of nitrocellulose, 40-50% of butanone, 5-7% of toluene, 0.1-0.2% of methyl cellulose, 0.01-0.10% of polytetrafluoroethylene, 0.5-1% of castor oil, 2-16% of diluter, 1-2% of N-methylpyrrolidone and 1.5-2.2% of resin. The prepared nitrocellulose film has higher mechanical strength. When being applied to power cell positive plates, the nitrocellulose film can be tightly adsorbed to the pole plate surface, thereby effectively preventing the active substances from shedding, enhancing the utilization ratio of the active substances, improving the specific capacity of the cells and prolonging the service life of the cells.
Description
Technical field
The present invention relates to a kind of cellulose nitrate film and preparation method thereof, specifically one kind is applied to power battery anode
Cellulose nitrate film of plate and preparation method thereof, belongs to Lead-acid Battery Technology field.
Background technology
At present, electrokinetic cell is with based on the medium current continuous discharge with the long period, or with heavy-current discharge
Feature（For starting, accelerating or climb）, electric bicycle is widely used in, in hybrid electric vehicle market.Electrokinetic cell master
If being made up of battery cover, positive pole, barrier film, negative pole, electrolyte, battery case, the active substance of its positive pole it is common for PbO2,
The active substance of negative pole be Pb, barrier film mostly be AGM dividing plates.Positive electrode, negative material, battery diaphragm, electrolyte are that plumbic acid stores
Most important four raw materials of battery.
It is little to there is energy density in existing electrokinetic cell, short life, the shortcomings of active substance easily comes off.For this purpose, for
How to extend battery life, improve specific capacity, reduce coming off for active substance, always people are of interest and urgent need to resolve
Problem, therefore, it is necessary to be made improvements on the basis of existing accumulator structure again, extend its service life.
In prior art, the cellulose membrane for accumulator repeatedly have ignored cellulose membrane sheet from from the point of view of battery
Effect and free diffusing in battery charge and discharge process electrolyte of the mechanical strength, film of body to battery pole plates active substance
With the impact of ion migration.
The content of the invention
It is an object of the invention to solve the deficiencies in the prior art, there is provided a kind of nitric acid for being applied to power battery anode plate
Cellulose membrane, the cellulose nitrate film have higher mechanical strength, can closely be combined together with battery pole plates,
Coming off for power battery anode plate active substance not only can be prevented, extends the life-span of battery, while battery can be greatly improved
Specific capacity.
Technical solution of the present invention is as follows：A kind of cellulose nitrate film for being applied to battery positive plate, is by following quality
It is prepared by the component of percentage ratio：Nitrocotton 30 ~ 45%, butanone 40 ~ 50%, toluene 5 ~ 7%, methylcellulose 0.1 ~ 0.2%, polytetrafluoroethyl-ne
Alkene 0.01 ~ 0.10%, Oleum Ricini 0.5 ~ 1%, diluent 2 ~ 16%, N-Methyl pyrrolidone 1 ~ 2%, resin 1.5 ~ 2.2%；It is concrete to make
Standby step is as follows：
（1）By nitrocotton and methylcellulose with butanone, toluene, diluent dissolving, mixing, then by resin, Oleum Ricini
Add, further mix homogeneously, obtained solution A；
（2）Politef and N-Methyl pyrrolidone are mixed, and ball milling are carried out in being then put in ball mill, are made to gather
Tetrafluoroethene fully dissolves, and obtains solution B；
（3）Solution A and solution B are placed in into 10 ~ 30min of supersound process under ultrasound wave, the various composition mixing in solution is made
It is uniform and make homogeneous emulsion；
（4）Battery positive plate is completely immersed in into step（3）In the emulsion for preparing, after 5 ~ 10min of immersion, at the uniform velocity will
Battery positive plate after immersion slowly proposes that put natural air drying at room temperature, the film layer of gained anode plate surface is nitre
Cellulose acetate films；Wherein, the diluent is ethanol, ethylene glycol, butanol, isopropanol, one or more in acetic acid；It is described
Resin is liquid amino resins or alkyd resin.
Preferably, the ultrasonic processing method of the solution A and solution B can be：Solution A is placed in into 50 ~ 60kHz of frequency first
Ultrasound wave under 10 ~ 30min of supersound process, then solution B is mixed with solution A, then by mixed solution in 50 ~ 60kHz of frequency
Ultrasound wave under 10 ~ 30min of supersound process.
Preferably, the ultrasonic processing method of the solution A and solution B can also be：Pour solution A and solution B into stirring
In machine, with rotating speed 400 ~ 800r/min, 5 ~ 10min of dispersed with stirring, then obtained mixed solution is placed in into the super of 40 ~ 50kHz of frequency
10 ~ 20min of supersound process under sound wave.
It is further preferred that during the supersound process, mixed solution temperature is 30 ~ 40 DEG C.
Thin film of the present invention is can also be by the component of following mass percent：Nitrocotton 30 ~ 45%, butanone 40 ~ 50%,
Toluene 5 ~ 7%, methylcellulose 0.1 ~ 0.2%, politef 0.01 ~ 0.10%, Oleum Ricini 0.5 ~ 1%, diluent 2 ~ 16%, N-
Methyl pyrrolidone 1 ~ 2%, resin 1.5 ~ 2.2%, are prepared using following steps：
（1）By butanone, toluene, diluent, methylcellulose, politef mix homogeneously, nitre is then added thereto to
Change cotton, resin and Oleum Ricini, stir 5 ~ 15min at normal temperatures and make emulsion；
（2）The glass plate for taking cleaning soaks taking-up after 5 ~ 10min in emulsion, makes emulsion in glass plate with gas phase membrane formation process
Upper film forming, then cellulose nitrate film is obtained after washing extraction, vacuum drying；Wherein, the diluent is ethanol, second two
One or more in alcohol, butanol, isopropanol, acetic acid；The resin is liquid amino resins or alkyd resin.
Cellulose nitrate film described in the inventive method is adsorbed in the form of film layer on the surface of pole plate, and the film layer is thick
Spend for 0.03-0.1mm.
Cellulose nitrate film prepared by the inventive method is the poroid thin film of multilamellar, the film surface micropore hole
Footpath is 0.5 μm -5 μm.
It is of the invention using the beneficial effect that above-mentioned technical solution reach to be：
（1）The present invention prepare cellulose nitrate film can be tightly absorption in the surface of battery pole plates, prepared nitre
The tensile strength of cellulose acetate films is 100 × 105-120×105N/m2, the active substance of pole plate both can be effectively pinned,
In charge and discharge process, electrolyte again can pass through thin film free diffusing and ion migration between both positive and negative polarity, and with very little
Resistance；
（2）The quality retention rate of the cellulose nitrate film of the present invention is 95%-97%, and which does not separate out the thing being harmful to pole plate
Matter, can be stable used in sour environment；
（3）The hardness of cellulose membrane can be improved in formula using Oleum Ricini so as to good mechanical performance, be extended
Service life；
（4）The cellulose nitrate film of the present invention is wrapped in battery pole plates surface carries out battery performance test, battery
Capacity can improve 10%, and the life-span of battery is（70%DOD）400-500 time, improve the specific capacity of battery and extend battery
Life-span.
Description of the drawings
Fig. 1 is to scratch the cellulose nitrate film for obtaining on a glass；Fig. 2 is peplos battery pole plates structural representation；
Fig. 3 is cellulose nitrate film electron microscope of the present invention.
Description of reference numerals：1. 2. glass plate of cellulose nitrate film, 3. cellulose nitrate film, 4. pole plate.
Specific embodiment
Embodiment 1 weighs following components by following mass percent：Nitrocotton 30%, butanone 45%, toluene 7%, methyl are fine
Dimension element 0.1%, politef 0.01%, Oleum Ricini 0.5%, diluent（Ethanol, isopropanol, acetic acid）14.89%th, N- methylpyrroles
Alkanone 1%, liquid amino resins 1.5%, prepare the cellulose nitrate film of the present invention using following steps：
（1）By nitrocotton and methylcellulose with butanone, toluene, diluent dissolving, mixing, then by resin, Oleum Ricini
Add, further mix homogeneously, obtained solution A；
（2）Politef and N-Methyl pyrrolidone are mixed, and ball milling are carried out in being then put in ball mill, are made to gather
Tetrafluoroethene fully dissolves, and obtains solution B；
（3）Solution A is first placed in supersound process 20min under the ultrasound wave of frequency 50kHz, then again by solution B and solution A
Mixing, then supersound process 10min under the ultrasound wave of frequency 60kHz, make the various composition mix homogeneously in solution, make homogeneous
Emulsion；
（4）Battery positive plate is completely immersed in into step（3）In the emulsion for preparing, after immersion 8min, will at the uniform velocity soak
Battery positive plate after bubble is slowly proposed, after putting natural air drying at room temperature, cellulose nitrate film is adsorbed in the form of film layer
In anode plate surface, the thickness of film layer is 0.06mm, and film surface has the micropore in 2 μm of aperture.
Embodiment 2 weighs following components by following mass percent：Nitrocotton 35%, butanone 40%, toluene 6%, methyl are fine
Dimension element 0.1%, politef 0.09%, Oleum Ricini 0.6%, diluent（Ethylene glycol, isopropanol, acetic acid）15.31%th, N- methyl pyrrole
Pyrrolidone 1.2%, alkyd resin 1.7%, prepare the cellulose nitrate film of the present invention using following steps：
（1）By nitrocotton and methylcellulose with butanone, toluene, diluent dissolving, mixing, then by alkyd resin, castor
Oleum Sesami is added, further mix homogeneously, obtained solution A；
（2）Politef and N-Methyl pyrrolidone are mixed, and ball milling are carried out in being then put in ball mill, are made to gather
Tetrafluoroethene fully dissolves, and obtains solution B；
（3）Solution A and solution B are poured in blender, with rotating speed 800r/min dispersed with stirring 5min, then supersonic frequency is placed in
Supersound process 20min under the conditions of rate 50kHz, 40 DEG C of mixed solution temperature, makes the various composition mix homogeneously in solution, makes
One emulsion；
（4）Battery positive plate is completely immersed in into step（3）In the emulsion for preparing, after immersion 10min, will at the uniform velocity soak
Battery positive plate after bubble is slowly proposed, after putting natural air drying at room temperature, defines cellulose nitrate in anode plate surface
Plain thin film, the thickness of the pellicle film is 0.05mm, and film surface has the micropore in 3 μm of aperture.
Embodiment 3 weighs following components by following mass percent：Nitrocotton 40%, butanone 50%, toluene 5%, methyl are fine
Dimension element 0.1%, politef 0.03%, Oleum Ricini 0.7%, diluent（Ethylene glycol）0.87%th, N-Methyl pyrrolidone 1.4%, liquid
State amino resins 1.9%, prepare the cellulose nitrate film of the present invention using following steps：
（1）By nitrocotton and methylcellulose with butanone, toluene, diluent dissolving, mixing, then by liquid amino tree
Fat, Oleum Ricini are added, further mix homogeneously, obtained solution A；
（2）Politef and N-Methyl pyrrolidone are mixed, and ball milling are carried out in being then put in ball mill, are made to gather
Tetrafluoroethene fully dissolves, and obtains solution B；
（3）Solution A and solution B are poured in blender, with rotating speed 400r/min dispersed with stirring 10min, then ultrasound is placed in
Supersound process 10min under the conditions of frequency 40kHz, 30 DEG C of mixed solution temperature, makes the various composition mix homogeneously in solution, makes
Homogeneous emulsion；
（4）Battery positive plate is completely immersed in into step（3）In the emulsion for preparing, after immersion 5min, will at the uniform velocity soak
Battery positive plate after bubble is slowly proposed, after putting natural air drying at room temperature, defines cellulose nitrate in anode plate surface
Plain thin film, the thickness of the pellicle film is 0.08mm, and film surface has the micropore in 5 μm of aperture.
Embodiment 4 weighs following components by following mass percent：Nitrocotton 45%, butanone 40%, toluene 5.5%, methyl
Cellulose 0.1%, politef 0.05%, Oleum Ricini 0.8%, diluent（Ethylene glycol, isopropanol, acetic acid）4.85%th, N- methyl
Ketopyrrolidine 1.6%, liquid amino resins 2.1%, prepare the cellulose nitrate film of the present invention using following steps：
（1）By butanone, toluene, diluent, methylcellulose, politef mix homogeneously, nitre is then added thereto to
Change cotton, liquid amino resins and Oleum Ricini, stir 10min at normal temperatures and make emulsion；
（2）The glass plate for taking cleaning soaks taking-up after 5min in emulsion, makes film forming on a glass with gas phase membrane formation process,
Cellulose nitrate film is obtained after washing extraction, vacuum drying again.
Cellulose nitrate film manufactured in the present embodiment is adsorbed on the surface of glass plate in the form of film layer, the thickness of film layer
For 0.03mm, film surface has the micropore in 0.5 μm of aperture.
Embodiment 5 weighs following components by following mass percent：Nitrocotton 42%, butanone 44%, toluene 6.5%, methyl
Cellulose 0.1%, politef 0.07%, Oleum Ricini 1%, diluent（Ethanol, acetic acid）2.13%th, N-Methyl pyrrolidone 2%,
Alkyd resin 2.2%, prepares the cellulose nitrate film of the present invention using following steps：
（1）By butanone, toluene, diluent, methylcellulose, politef mix homogeneously, nitre is then added thereto to
Change cotton, alkyd resin and Oleum Ricini, stir 15min at normal temperatures and make emulsion；
（2）The glass plate for taking cleaning soak taking-up after 10min in emulsion, with gas phase membrane formation process make on a glass into
Film, then cellulose nitrate film is obtained after washing extraction, vacuum drying.
Cellulose nitrate film manufactured in the present embodiment is adsorbed on the surface of glass plate in the form of film layer, the thickness of film layer
For 0.1mm, film surface has the micropore in 4 μm of aperture.
The cellulose nitrate film that Jing experimental test examples 1 ~ 5 are obtained（Thin film 1 ~ 5）Tensile strength and quality retain
Rate is as shown in table 1；The cellulose nitrate film of embodiment 1 ~ 5 is applied to into battery positive plate, the peplos battery 1# for obtaining respectively ~
5#, its cycle life and specific capacity compared with commonly non-peplos battery, as shown in table 2.
1 embodiment of table 1 ~ 5 obtains the performance test results of cellulose nitrate film
The Performance comparision of 2 peplos battery of table and common batteries
。
Knowable in table 1, table 2, the tensile strength and quality retention rate of the cellulose nitrate film prepared by the present invention are all
Comparison is high, and the performance of prepared peplos battery is also better than common batteries, and cellulose nitrate film is wrapped in the table of pole plate
Face can effectively prevent coming off for active substance, improve the utilization rate of active substance, extend the service life of battery, prepared
Peplos battery specific capacity be 40-50Wh Kg, life-span of battery is 400-500 time.
Claims (6)
1. a kind of cellulose nitrate film for being applied to power battery anode plate, it is characterised in that：It is by following mass percent
Component prepare：Nitrocotton 30 ~ 45%, butanone 40 ~ 50%, toluene 5 ~ 7%, methylcellulose 0.1 ~ 0.2%, politef 0.01
~ 0.10%, Oleum Ricini 0.5 ~ 1%, diluent 2 ~ 16%, N-Methyl pyrrolidone 1 ~ 2%, resin 1.5 ~ 2.2%；Concrete preparation process
It is as follows：
（1）By nitrocotton and methylcellulose with butanone, toluene, diluent dissolving, mixing, then resin, Oleum Ricini are added,
Further mix homogeneously, obtained solution A；
（2）Politef and N-Methyl pyrrolidone are mixed, and ball milling are carried out in being then put in ball mill, are made polytetrafluoro
Ethylene fully dissolves, and obtains solution B；
（3）Solution A and solution B are placed in into 10 ~ 30min of supersound process under ultrasound wave, the various composition mix homogeneously in solution is made
And make homogeneous emulsion；
（4）Battery positive plate is completely immersed in into step（3）In the emulsion for preparing, after 5 ~ 10min of immersion, will at the uniform velocity soak
Battery positive plate afterwards slowly proposes that put natural air drying at room temperature, the film layer of gained anode plate surface is nitric acid fibre
The plain thin film of dimension；Wherein, the diluent is ethanol, ethylene glycol, butanol, isopropanol, one or more in acetic acid；The resin
For liquid amino resins or alkyd resin.
2. cellulose nitrate film according to claim 1, it is characterised in that：The supersound process of the solution A and solution B
Method is：Solution A is placed in into 10 ~ 30min of supersound process under the ultrasound wave of 50 ~ 60kHz of frequency first, then by solution B and solution A
Mixing, then by mixed solution under the ultrasound wave of 50 ~ 60kHz of frequency 10 ~ 30min of supersound process.
3. cellulose nitrate film according to claim 1, it is characterised in that：The supersound process of the solution A and solution B
Method is：Solution A and solution B are poured in blender, with rotating speed 400 ~ 800r/min, 5 ~ 10min of dispersed with stirring, then will be obtained
Mixed solution be placed in 10 ~ 20min of supersound process under the ultrasound wave of 40 ~ 50kHz of frequency.
4. the cellulose nitrate film according to any one of claim 1 or 2 or 3, it is characterised in that：The supersound process
When, mixed solution temperature is 30 ~ 40 DEG C.
5. cellulose nitrate film according to claim 1, it is characterised in that：The cellulose nitrate film is with film layer
Form absorption on the surface of positive plate, the thicknesses of layers is 0.03-0.1mm.
6. cellulose nitrate film according to claim 1, it is characterised in that：The cellulose nitrate film is more than one
The poroid thin film of layer, the film surface micropore size are 0.5 μm -5 μm.
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| CN111154123A (en) * | 2020-01-14 | 2020-05-15 | 上海市新亚净化器件厂 | Method for continuously preparing large-aperture nitrocellulose membrane |
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| US3154506A (en) * | 1958-09-08 | 1964-10-27 | Acheson Ind Inc | Polytetrafluoroethylene-water insoluble cellulosic ester dispersions and method of forming coatings therewith |
| CN102074742B (en) * | 2010-09-14 | 2013-07-31 | 彭滨 | Polymeric membrane lead-acid storage battery |
| CN102013485A (en) * | 2010-11-03 | 2011-04-13 | 彭滨 | Positive plate for plate-type bushing storage battery |
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