CN115149213A - Novel partition plate for lead-carbon battery and preparation method thereof - Google Patents
Novel partition plate for lead-carbon battery and preparation method thereof Download PDFInfo
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- 238000005192 partition Methods 0.000 title claims abstract description 37
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 39
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- 239000000377 silicon dioxide Substances 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 13
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- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 10
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- 238000000576 coating method Methods 0.000 claims description 11
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- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 3
- 229910021485 fumed silica Inorganic materials 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- VJWGHGJYLCJIEK-UHFFFAOYSA-N 1,4-bis(6-methylheptoxy)-1,4-dioxobutane-2-sulfonic acid Chemical compound CC(C)CCCCCOC(=O)CC(S(O)(=O)=O)C(=O)OCCCCCC(C)C VJWGHGJYLCJIEK-UHFFFAOYSA-N 0.000 claims 1
- 239000002904 solvent Substances 0.000 description 21
- 239000004698 Polyethylene Substances 0.000 description 12
- 239000003792 electrolyte Substances 0.000 description 10
- 238000005187 foaming Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 229940113088 dimethylacetamide Drugs 0.000 description 6
- 239000003365 glass fiber Substances 0.000 description 6
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- 229920000573 polyethylene Polymers 0.000 description 6
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- 239000013543 active substance Substances 0.000 description 3
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- MQKXWEJVDDRQKK-UHFFFAOYSA-N bis(6-methylheptyl) butanedioate Chemical compound CC(C)CCCCCOC(=O)CCC(=O)OCCCCCC(C)C MQKXWEJVDDRQKK-UHFFFAOYSA-N 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000011812 mixed powder Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 1
- 125000002243 cyclohexanonyl group Chemical group *C1(*)C(=O)C(*)(*)C(*)(*)C(*)(*)C1(*)* 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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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
- H01M50/446—Composite material consisting of a mixture of organic and inorganic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
- B05D3/107—Post-treatment of applied coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- 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
-
- 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
-
- 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
- H01M50/411—Organic material
- H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
- H01M50/417—Polyolefins
-
- 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
- H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
- H01M50/491—Porosity
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- Chemical & Material Sciences (AREA)
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- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Composite Materials (AREA)
- Inorganic Chemistry (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Cell Separators (AREA)
Abstract
The invention discloses a novel partition board for a lead-carbon battery, which is prepared from the following raw materials: the base material powder comprises, by mass, 100% of base material powder, 20-50% of PVC, 2-30% of CPE, 1-10% of TAIC, 0.1-1.8% of anionic surfactant, 10-60% of silicon dioxide and 0.5-0.8% of coloring agent, and an organic solvent, wherein the mass of the organic solvent is 2-8 times of the total mass of the base material powder. The invention provides a novel separator for a lead-carbon battery, which can better prolong the service life of the battery. The invention also provides a preparation method of the novel separator for the lead-carbon battery.
Description
Technical Field
The invention relates to the technical field of battery separators, in particular to a novel separator for a lead-carbon battery and a preparation method thereof.
Background
Since 1859 french scientist pramit invented lead-acid batteries, there has been 162 years of history. In recent decades, the storage battery industry has changed from the top to the bottom, and the storage battery industry is entering a rapid development orbit.
The lead-acid storage battery separator has the functions of isolating the positive electrode and the negative electrode in the battery and avoiding the short circuit of the positive electrode and the negative electrode in the battery, meanwhile, the separator has the advantages that conductive ions can be allowed to pass through, the thickness, the porosity, the pore diameter and the tortuosity of pores have important influences on the capacity of high-rate battery discharge and the terminal voltage level, and the stability of the separator directly influences the service life of the battery. For electrolytes alone, the separator needs to have sufficient space and porosity to conduct ions through it. With the progress of battery research, separators are continuously recognized to play an important role in improving battery performance and prolonging battery life. Therefore, the separator, which is called the third pole of the battery, becomes an important means for developing a new battery or improving an existing battery.
Disclosure of Invention
The invention aims to provide a novel separator for a lead-carbon battery and a preparation method thereof, which can better prolong the service life of the battery.
The invention discloses a novel clapboard for a lead-carbon battery and a preparation method thereof, and the technical scheme is as follows:
a novel separator for a lead-carbon battery is prepared from the following raw materials: the base material powder comprises, by mass, 100% of base material powder, 20-50% of PVC, 5-30% of CPE, 1-10% of TAIC, 0.1-1.8% of anionic surfactant, 10-60% of silicon dioxide and 0.5-0.8% of coloring agent, and an organic solvent, wherein the mass of the organic solvent is 1-8 times of the total mass of the base material powder.
Preferably, the silica is one or more of precipitated silica or fumed silica.
Preferably, the organic solvent is one or more of dimethylformamide, dimethylacetamide, tetrahydrofuran and cyclohexanone.
Preferably, the anionic surfactant is one or more of diisooctyl succinate sodium sulfonate or sodium dodecyl benzene sulfonate.
Preferably, the PVC has a degree of polymerization of 1000 to 1800.
Preferably, the coloring agent is carbon black.
The preparation method of the PVC microporous foaming partition plate comprises the following steps:
s1, adding PVC, CPE, TAIC1, silicon dioxide and a coloring agent into a mixer to be mixed at a high speed;
s2, adding the powder mixed in the step S1 into a reaction kettle containing an anionic surfactant and an organic solvent, and heating and stirring the reaction kettle to form viscous fluid;
s3, putting the viscous fluid mixed and dissolved in the S2 into a hopper of a coating machine, presetting a trawl on the surface of the coating machine, and scraping the viscous fluid to the surface of the trawl through a scraper mechanism;
s4, soaking the trawl with the surface coated with the viscous fluid in a scraping mode into an extraction tank filled with extraction liquid through a driving roller, wherein the temperature in the extraction tank is 20-90 ℃, and extracting and replacing the organic solvent in the viscous fluid and the extraction liquid;
s5, removing the organic solvent soaked in the step S4 through a driving roller, transferring the formed primary partition board containing water inside to drying equipment, and drying to form a partition board with a micropore structure inside;
and S6, rolling the partition plates on the surface of the trawl by using a rolling mechanism, and circularly driving the trawl along the coating machine and the extraction tank.
Preferably, the extract is methanol or an aqueous solution.
As preferred scheme, extraction tank quantity is a plurality of, just the extraction tank is adjacent to be set up from low to high, and is adjacent the extraction tank communicates each other, and is terminal the extraction tank is equipped with organic solvent check out test set and increases liquid equipment, and is first the extraction tank intercommunication has storage jar.
The novel partition plate for the lead-carbon battery disclosed by the invention has the beneficial effects that: compared with the PVC diaphragm prepared by the traditional sintering method, the prepared PVC microporous foaming diaphragm has higher porosity and more ideal pore size distribution; compared with the traditional glass fiber partition plate, the glass fiber partition plate has better puncture resistance, better compressive strength and stronger toughness; compared with polyethylene PE separator, the polyethylene PE separator has better oxidation resistance and chemical stability. The PVC microporous foaming partition plate has good rebound elasticity, is favorable for tight assembly of the battery, and plays a key role in preventing the active substances of the battery from softening and falling off and prolonging the cycle life of the battery; the high porosity is beneficial to the oxygen recombination efficiency in the later charging period, and has positive significance for reducing the decomposition of electrolyte, improving the sealing reaction efficiency of the battery and prolonging the cycle life of the battery; the PVC microporous foaming clapboard contains silicon dioxide, has an adsorption effect on electrolyte, and has a thorough improvement effect on preventing the electrolyte from layering to cause the increase of sulfuric acid density at the bottom of a polar plate and the corrosion of the polar plate, so that the service life of the battery can be better prolonged.
Drawings
Fig. 1 is a process flow chart of a method for preparing the novel separator for the lead-carbon battery according to the invention.
Detailed Description
The invention will be further elucidated and described with reference to the embodiments and drawings of the specification:
a novel separator for a lead-carbon battery, which is prepared from the following raw materials: the base material powder comprises, by mass, 20-50% of PVC, 5-30% of CPE, 1-10% of TAIC, 0.1-1.8% of anionic surfactant, 10-60% of silicon dioxide and 0.05-0.08% of coloring agent, and an organic solvent, wherein the sum of the mass percentages of the base material powder is 100%, and the mass of the organic solvent is 2-5 times of the total mass of the base material powder.
In the above scheme, the silica is one or more of precipitated silica or fumed silica. The organic solvent is one or more of dimethylformamide, dimethylacetamide, tetrahydrofuran and cyclohexanone. The anionic surfactant is one or more of diisooctyl succinate sodium sulfonate or sodium dodecyl benzene sulfonate. The polymerization degree of PVC is 1000-1800. The coloring agent is carbon black, can dye the separator, and does not have any side effect on the battery.
Compared with the PVC diaphragm prepared by the traditional sintering method, the prepared PVC microporous foaming diaphragm has higher porosity and more ideal pore size distribution; compared with the traditional glass fiber partition plate, the glass fiber partition plate has better puncture resistance, better compressive strength and stronger toughness; compared with polyethylene PE separator, the polyethylene PE separator has better oxidation resistance and chemical stability. The PVC microporous foaming partition plate has good rebound elasticity, is favorable for tight assembly of the battery, and plays a key role in preventing the active substances of the battery from softening and falling off and prolonging the cycle life of the battery; the high porosity is beneficial to the oxygen recombination efficiency in the later stage of charging, and has positive significance for reducing the decomposition of electrolyte, improving the sealing reaction efficiency of the battery and prolonging the cycle life of the battery; the PVC microporous foaming clapboard contains silicon dioxide, has an adsorption effect on electrolyte, and has a thorough improvement effect on preventing the electrolyte from layering to cause the increase of sulfuric acid density at the bottom of a polar plate and the corrosion of the polar plate, so that the service life of the battery can be better prolonged.
Referring to fig. 1, a method for preparing the PVC microporous foamed separator includes the following steps:
s1, adding PVC, CPE, TAIC1, silicon dioxide and a coloring agent into a mixer to be mixed at a high speed;
s2, adding the powder mixed in the step S1 into a reaction kettle containing an anionic surfactant and an organic solvent, and heating and stirring the reaction kettle to form viscous fluid;
s3, putting the viscous fluid mixed and dissolved in the step S2 into a hopper of a coating machine, presetting a reciprocating closed motion trawl on the surface of the coating machine, and scraping the viscous fluid to the surface of the trawl through a scraper mechanism;
s4, soaking the trawl with the surface coated with the viscous fluid in a scraping way into an extraction tank filled with extraction liquid through a driving roller, wherein the temperature in the extraction tank is 20-90 ℃, and extracting and replacing the solvent in the viscous fluid and the extraction liquid;
s5, after the solvent is removed after the solvent is soaked in the step S4 through a driving roller, a primary partition board with water inside is formed and is transferred to drying equipment, and the primary partition board is dried to form a partition board with a micropore structure inside;
and S6, rolling the partition plates on the surface of the trawl by using a rolling mechanism, and circularly closing and driving the trawl along the coating machine and the extraction tank.
Through the preparation method of the PVC microporous foaming partition board, in the manufacturing process, a viscous fluid formed by mixing base material powder and an organic solvent is scraped to form a layer shape with a desired thickness, the layered viscous fluid is extracted and replaced with an extraction liquid in an extraction tank at the temperature of 20-90 ℃, so that the organic solvent and the extraction liquid in the viscous fluid are replaced, the extraction liquid enters the position of the viscous fluid for replacing the organic solvent, the primary partition board after extraction and replacement is dried, the extraction liquid in the primary partition board is evaporated, a microporous structure is formed in the primary partition board, and the primary partition board is also formed into a board after being dried and then rolled.
The extract is methanol or water solution, and is one or more of dimethyl formamide, dimethyl acetamide, tetrahydrofuran and cyclohexanone; when the organic solvent is dimethylformamide, dimethylacetamide or tetrahydrofuran, an aqueous solution may be used for the substitution, and when the organic solvent is cyclohexanone, a methanol solution may be used for the substitution.
And in the subsequent drying, when aqueous solution is adopted for extraction and replacement, the drying temperature is 50-120 ℃, and when formaldehyde solution is adopted, the water can be directly dried at the normal temperature without heating treatment.
And extraction tank quantity is a plurality of, and the extraction tank is adjacent to be set up from low to high, and adjacent extraction tank communicates each other, and terminal extraction tank is equipped with organic solvent on-line measuring equipment and increases liquid equipment, and first extraction tank intercommunication has the storage jar. In order to ensure that the organic solvent in the viscous fluid can be completely replaced by the extraction liquid in the extraction tanks, the plurality of extraction tanks are arranged in a step shape to carry out gradual independent extraction, so that the condition that the content of the organic solvent in the extraction liquid is gradually reduced is formed in the plurality of extraction tanks, and a solvent detection device is arranged in the extraction tank at the tail end and used for detecting the content of the solvent in the extraction liquid, so that the residual proportion in the formed primary partition plate is judged. When the content of the organic solvent in the tail end extraction tank is higher than 0.5%, the liquid increasing equipment is started, the extraction liquid is discharged into the tail end extraction tank and is used for arranging the extraction tanks adjacently from low to high, and the adjacent extraction tanks are mutually communicated, so that when the extraction liquid is introduced into the tail end extraction tank, the extraction liquid also flows to the front extraction tank, the content of the organic solvent in the whole extraction tank is reduced, and the extraction liquid in the extraction tank is improved for extracting and replacing the organic solvent in the viscous fluid. The first extraction tank contains a height-limited overflow hole, and the mixed liquid with the height exceeding the height overflows to a storage tank to wait for separation and recycling.
Example 1
1) 6.9kg of PVC, 2.6kg of CPE, 1.8kg of TAIC, 8.5kg of silica and 0.15kg of carbon black were added to the mixer and mixed at high speed.
2) Adding the mixed powder into 60kg of dimethylacetamide solvent containing 0.2kg of anionic surfactant, heating at 70 ℃, stirring to form viscous fluid, and placing in a barrel for sealing after stirring.
3) The mixed viscous fluid is manually added on a coating machine, is adjusted to a required thickness by a thickness clapboard and is coated on a trawl.
4) The coated liquid enters an extraction tank with the temperature of 40 ℃ for extracting a solvent, the extraction liquid solvent in the extraction tank is an aqueous solution, the dimethylacetamide solvent in the viscous fluid is exchanged with water, the concentration of the solvent in the first extraction tank is kept at 15%, the solvent is separated from the viscous fluid by a plurality of extraction tanks and then the solvent content in the last water tank is 0.5% through testing, the solvent is separated from the partition plate out of the extraction tank and enters drying equipment for hot air drying at the temperature of 80 ℃, and the dried solvent is wound by a winding mechanism.
Example 2
1) 6.9kg of PVC, 2.6kg of CPE, 1.8kg of TAIC, 8.5kg of silica and 0.15kg of carbon black were added to the mixer and mixed at high speed.
2) Adding the mixed powder into 60kg of cyclohexanone solvent containing 0.2kg of anionic surfactant, heating to 80 ℃, stirring to form viscous fluid, and placing in a barrel for sealing after stirring.
3) The mixed viscous fluid is manually added on a coating machine, is adjusted to a required thickness by a thickness clapboard and is coated on a trawl.
4) The coated liquid enters an extraction tank with the temperature of 30 ℃ for extracting a solvent, the solvent of an extraction liquid in the extraction tank is a methanol solution, the cyclohexanone solvent in a viscous fluid is exchanged with the methanol, the concentration of the solvent in the first extraction tank is kept at 15%, the solvent is removed from a partition plate after passing through a plurality of extraction tanks, the content of the cyclohexanone solvent in the last water tank is 0.5% by testing, the partition plate is discharged from the extraction tanks, enters drying equipment for normal-temperature air drying, and is wound by a winding mechanism after air drying, and when the methanol is taken as the extraction liquid, the equipment is reliably grounded and sparks are prevented.
The invention provides a novel partition board for a lead-carbon battery and a preparation method thereof, and compared with a PVC diaphragm prepared by a traditional sintering method, the prepared PVC microporous foamed partition board has higher porosity and more ideal pore size distribution; compared with the traditional glass fiber partition plate, the glass fiber partition plate has better puncture resistance, better compressive strength and stronger toughness; compared with polyethylene PE separator, the polyethylene PE separator has better oxidation resistance and chemical stability. The PVC microporous foaming partition plate has good rebound elasticity, is favorable for tight assembly of the battery, and plays a key role in preventing the active substances of the battery from softening and falling off and prolonging the cycle life of the battery; the high porosity is beneficial to the oxygen recombination efficiency in the later charging period, and has positive significance for reducing the decomposition of electrolyte, improving the sealing reaction efficiency of the battery and prolonging the cycle life of the battery; the PVC microporous foaming clapboard contains silicon dioxide, has an adsorption effect on electrolyte, and has a thorough improvement effect on preventing the electrolyte from layering to cause the increase of sulfuric acid density at the bottom of a polar plate and the corrosion of the polar plate, so that the service life of the battery can be better prolonged.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. A novel separator for a lead-carbon battery is characterized by comprising the following raw materials: the base material powder comprises, by mass, 100% of base material powder, 20-50% of PVC, 5-30% of CPE, 1-10% of TAIC, 0.1-1.8% of anionic surfactant, 10-60% of silicon dioxide and 0.5-0.8% of coloring agent, and an organic solvent, wherein the mass of the organic solvent is 1-8 times of the total mass of the base material powder.
2. The novel separator for a lead-carbon battery as claimed in claim 1, wherein the silica is one or more of precipitated silica or fumed silica.
3. The novel separator for a lead-carbon battery as claimed in claim 1, wherein the organic solvent is any one or more of dimethylformamide, dimethylacetamide, tetrahydrofuran, and cyclohexanone.
4. The novel separator for a lead-carbon battery as claimed in claim 1, wherein the anionic surfactant is one or more of diisooctyl sulfosuccinate or sodium dodecylbenzenesulfonate.
5. The novel separator for a lead-carbon battery as claimed in claim 1, wherein said PVC has a degree of polymerization of 1000 to 1800.
6. The novel separator for a lead-carbon battery as claimed in claim 1, wherein said coloring agent is carbon black.
7. A method for preparing the PVC microporous foamed separator as claimed in any one of claims 1 to 6, comprising the steps of:
s1, adding PVC, CPE, TAIC1, silicon dioxide and a coloring agent into a mixer for high-speed mixing;
s2, adding the powder mixed in the S1 into a reaction kettle containing an anionic surfactant and an organic solvent, and heating and stirring the reaction kettle to form viscous fluid;
s3, putting the viscous fluid mixed and dissolved in the step S2 into a hopper of a coating machine, presetting a trawl on the surface of the coating machine, and scraping the viscous fluid onto the surface of the trawl through a scraper mechanism;
s4, soaking the trawl with the surface coated with the viscous fluid in a scraping mode into an extraction tank filled with extraction liquid through a driving roller, wherein the temperature in the extraction tank is 20-90 ℃, and extracting and replacing the organic solvent in the viscous fluid and the extraction liquid;
s5, after the organic solvent is removed from the soaked solution in the step S4 through a driving roller, forming a primary partition board containing water inside, transferring the primary partition board into drying equipment, and drying to form a partition board with a microporous structure inside;
and S6, rolling the partition plates on the surface of the trawl by using a rolling mechanism, and circularly driving the trawl along the coating machine and the extraction tank.
8. The method of claim 6, wherein the extraction solution is methanol or an aqueous solution.
9. The method for preparing the novel partition board for the lead-carbon battery as claimed in claim 6, wherein the number of the extraction tanks is several, the extraction tanks are arranged adjacently from low to high, the adjacent extraction tanks are communicated with each other, an organic solvent detection device and a liquid increasing device are arranged at the tail end of the extraction tank, and the first extraction tank is communicated with a storage tank.
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| CN202111503047.6A CN115149213A (en) | 2021-12-10 | 2021-12-10 | Novel partition plate for lead-carbon battery and preparation method thereof |
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| CN202111503047.6A CN115149213A (en) | 2021-12-10 | 2021-12-10 | Novel partition plate for lead-carbon battery and preparation method thereof |
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| WO1987006395A1 (en) * | 1986-04-07 | 1987-10-22 | Scimat Limited | Composite membrane |
| CN102044649A (en) * | 2010-12-16 | 2011-05-04 | 浙江南都电源动力股份有限公司 | Manufacturing method of colloid battery separator |
| CN102130314A (en) * | 2010-01-12 | 2011-07-20 | 华南师范大学 | Novel PVC/rubber composite micropore partition board |
| CN109478624A (en) * | 2016-06-01 | 2019-03-15 | 达拉米克有限责任公司 | Improved partition, improved battery and correlation technique for lead-acid battery |
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2021
- 2021-12-10 CN CN202111503047.6A patent/CN115149213A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987006395A1 (en) * | 1986-04-07 | 1987-10-22 | Scimat Limited | Composite membrane |
| CN102130314A (en) * | 2010-01-12 | 2011-07-20 | 华南师范大学 | Novel PVC/rubber composite micropore partition board |
| CN102044649A (en) * | 2010-12-16 | 2011-05-04 | 浙江南都电源动力股份有限公司 | Manufacturing method of colloid battery separator |
| CN109478624A (en) * | 2016-06-01 | 2019-03-15 | 达拉米克有限责任公司 | Improved partition, improved battery and correlation technique for lead-acid battery |
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