CN118421391B - Preparation method and application of water-based rolling liquid for rolling power battery aluminum foil - Google Patents
Preparation method and application of water-based rolling liquid for rolling power battery aluminum foil Download PDFInfo
- Publication number
- CN118421391B CN118421391B CN202410888167.XA CN202410888167A CN118421391B CN 118421391 B CN118421391 B CN 118421391B CN 202410888167 A CN202410888167 A CN 202410888167A CN 118421391 B CN118421391 B CN 118421391B
- Authority
- CN
- China
- Prior art keywords
- rolling
- aluminum foil
- acid
- power battery
- fatty acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 128
- 239000011888 foil Substances 0.000 title claims abstract description 113
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 110
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 110
- 239000007788 liquid Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 50
- 238000005260 corrosion Methods 0.000 claims abstract description 45
- 230000007797 corrosion Effects 0.000 claims abstract description 45
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 34
- 229930195729 fatty acid Natural products 0.000 claims abstract description 34
- 239000000194 fatty acid Substances 0.000 claims abstract description 34
- 150000004665 fatty acids Chemical class 0.000 claims abstract description 27
- 239000003112 inhibitor Substances 0.000 claims abstract description 26
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000654 additive Substances 0.000 claims abstract description 22
- 230000000996 additive effect Effects 0.000 claims abstract description 22
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 16
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000012874 anionic emulsifier Substances 0.000 claims abstract description 8
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 21
- 230000002829 reductive effect Effects 0.000 claims description 19
- 238000003756 stirring Methods 0.000 claims description 15
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 14
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 11
- 239000002253 acid Substances 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 9
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 238000009833 condensation Methods 0.000 claims description 7
- 230000005494 condensation Effects 0.000 claims description 7
- 238000004821 distillation Methods 0.000 claims description 7
- 239000000314 lubricant Substances 0.000 claims description 7
- OKTMSDOBWSRCQW-UHFFFAOYSA-N 2-[1,3-bis(2-hydroxyethyl)triazinan-5-yl]ethanol Chemical group OCCC1CN(CCO)NN(CCO)C1 OKTMSDOBWSRCQW-UHFFFAOYSA-N 0.000 claims description 6
- 230000000844 anti-bacterial effect Effects 0.000 claims description 6
- 239000003899 bactericide agent Substances 0.000 claims description 6
- WLJVNTCWHIRURA-UHFFFAOYSA-N pimelic acid Chemical compound OC(=O)CCCCCC(O)=O WLJVNTCWHIRURA-UHFFFAOYSA-N 0.000 claims description 6
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 claims description 5
- OEOIWYCWCDBOPA-UHFFFAOYSA-N 6-methyl-heptanoic acid Chemical compound CC(C)CCCCC(O)=O OEOIWYCWCDBOPA-UHFFFAOYSA-N 0.000 claims description 5
- 229910019142 PO4 Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 5
- 239000010452 phosphate Substances 0.000 claims description 5
- 239000003784 tall oil Substances 0.000 claims description 5
- YYKBWYBUCFHYPR-UHFFFAOYSA-N 12-bromododecanoic acid Chemical compound OC(=O)CCCCCCCCCCCBr YYKBWYBUCFHYPR-UHFFFAOYSA-N 0.000 claims description 4
- VQPWMWLQABFAIO-UHFFFAOYSA-N 14-bromotetradecanoic acid Chemical compound OC(=O)CCCCCCCCCCCCCBr VQPWMWLQABFAIO-UHFFFAOYSA-N 0.000 claims description 4
- 235000011037 adipic acid Nutrition 0.000 claims description 4
- 239000001361 adipic acid Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- PFNCOYVEMJYEED-UHFFFAOYSA-N 16-bromohexadecanoic acid Chemical compound OC(=O)CCCCCCCCCCCCCCCBr PFNCOYVEMJYEED-UHFFFAOYSA-N 0.000 claims description 3
- 238000013329 compounding Methods 0.000 claims description 2
- SFNALCNOMXIBKG-UHFFFAOYSA-N ethylene glycol monododecyl ether Chemical group CCCCCCCCCCCCOCCO SFNALCNOMXIBKG-UHFFFAOYSA-N 0.000 claims description 2
- CNTXYLCDFKRSRI-UHFFFAOYSA-N phosphoric acid;1-tridecoxytridecane Chemical compound OP(O)(O)=O.CCCCCCCCCCCCCOCCCCCCCCCCCCC CNTXYLCDFKRSRI-UHFFFAOYSA-N 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 4
- 239000007921 spray Substances 0.000 claims 2
- 239000000243 solution Substances 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 230000001681 protective effect Effects 0.000 abstract description 5
- 238000005461 lubrication Methods 0.000 abstract description 4
- 150000004668 long chain fatty acids Chemical class 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 description 15
- 238000012360 testing method Methods 0.000 description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 13
- 239000003921 oil Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 239000000203 mixture Substances 0.000 description 10
- -1 fatty acid ester Chemical class 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 230000001050 lubricating effect Effects 0.000 description 7
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 6
- 239000000376 reactant Substances 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 5
- 239000008096 xylene Substances 0.000 description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 238000003851 corona treatment Methods 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 125000004433 nitrogen atom Chemical group N* 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- XFRVVPUIAFSTFO-UHFFFAOYSA-N 1-Tridecanol Chemical compound CCCCCCCCCCCCCO XFRVVPUIAFSTFO-UHFFFAOYSA-N 0.000 description 3
- UUWJHAWPCRFDHZ-UHFFFAOYSA-N 1-dodecoxydodecane;phosphoric acid Chemical compound OP(O)(O)=O.CCCCCCCCCCCCOCCCCCCCCCCCC UUWJHAWPCRFDHZ-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 150000002191 fatty alcohols Chemical class 0.000 description 2
- 125000002636 imidazolinyl group Chemical group 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- UQDUPQYQJKYHQI-UHFFFAOYSA-N methyl laurate Chemical compound CCCCCCCCCCCC(=O)OC UQDUPQYQJKYHQI-UHFFFAOYSA-N 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 244000137852 Petrea volubilis Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 239000002199 base oil Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 239000010731 rolling oil Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M173/00—Lubricating compositions containing more than 10% water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/10—Lubricating, cooling or heating rolls externally
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
- C07D233/04—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
- C07D233/06—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to ring carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M177/00—Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/14—Nitrogen-containing compounds
- C23F11/149—Heterocyclic compounds containing nitrogen as hetero atom
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/223—Five-membered rings containing nitrogen and carbon only
- C10M2215/224—Imidazoles
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/16—Antiseptic; (micro) biocidal or bactericidal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/24—Metal working without essential removal of material, e.g. forming, gorging, drawing, pressing, stamping, rolling or extruding; Punching metal
-
- 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)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Metal Rolling (AREA)
Abstract
The invention relates to the technical field of aluminum foil rolling, and discloses a preparation method and application of an aqueous rolling liquid for rolling an aluminum foil of a power battery, which takes malonic acid, diethylenetriamine and long-chain brominated fatty acid as raw materials, and is compounded with fatty acid, an anionic emulsifier and the like, so that the obtained aqueous rolling liquid can be firmly adsorbed on the surface of metal, realize separation of a roller and the aluminum foil and play a role in lubrication; the bisimidazoline quaternary ammonium salt corrosion inhibitor contains long-chain fatty acid and rolling additive, has structural similarity and good compatibility, and improves the dyne value of the aluminum foil surface; meanwhile, the corrosion inhibitor can form a layer of compact protective film on the surface of the aluminum foil, so that the aluminum foil is protected; the battery aluminum foil obtained by adopting the brand-new application process is rolled by optimized multiple passes, so that the tensile strength and the elongation of the aluminum foil are obviously improved.
Description
Technical Field
The invention relates to the technical field of aluminum foil rolling, in particular to a preparation method and application of an aqueous rolling liquid for rolling an aluminum foil of a power battery.
Background
With the development of new energy automobiles, the requirements of batteries such as lithium ion batteries and the like are rapidly increased, and higher requirements are put on the battery capacity, safety performance and the like of the lithium ion batteries; under the general condition, the battery aluminum foil prepared by rolling aluminum foil is used as a positive electrode current collector in the lithium ion battery industry, the surface quality of the battery aluminum foil directly influences various performances of a lithium ion battery, the surface dyne value of a general battery aluminum foil product is required to be controlled to be more than 31 dyne, and the surface dyne value of the aluminum foil can be attenuated along with the storage time, so that the surface dyne value of the aluminum foil product is required to be more than 32 dyne after the rolling is finished, but the conventional aluminum foil process oil is difficult to meet the production requirement; therefore, developing a rolling liquid with excellent lubricating effect, which can increase the dyne value of the battery foil, improve the surface quality of the battery foil, and optimize the rolling process becomes a current urgent problem to be solved.
In the aluminum foil rolling process, a working roller of an aluminum foil rolling mill is in contact with the aluminum foil, so that the aluminum foil is thinned to a target thickness according to different rolling passes, and in order to obtain a sufficient lubrication effect to ensure smooth aluminum foil rolling, rolling liquid is indispensable in the aluminum foil rolling process; in the prior art, an oily system (base oil, fatty alcohol and fatty acid ester) is generally adopted, but an oil film is remained on the surface of an aluminum foil after rolling, the surface tension of a traditional oil film is low, the binding force between the aluminum foil and the aqueous precoated carbon slurry is reduced, carbon coating is omitted or the adhesive force is poor, a carbon layer is dropped, the anode material of a lithium battery cannot be normally coated on the aluminum foil of the precoated carbon layer, the internal resistance of the battery is increased, and the energy density is greatly reduced; meanwhile, oil smoke is generated in the rolling process of the oily system, the conductivity is low, the ignition accident of the rolling mill is easy to cause, and the cost is high.
In order to reduce the surface contact angle of the aluminum foil to improve the binding force of the carbon-coated slurry and the aluminum foil, and achieve the effects of increasing the energy density and reducing the internal resistance of lithium battery products, measures are generally taken in the industry, corona treatment is carried out on the surface of the aluminum foil, an oil film on the surface of the aluminum foil is removed, the effect of improving the surface tension of the aluminum foil is achieved, and then the contact angle of the surface of the aluminum foil is reduced, but the corona treatment only has an effect in a short period, cannot play a role for a long time and has low efficiency; the invention aims to switch a rolling system of a battery aluminum foil from an oily system to an aqueous system, prepare the green and environment-friendly aqueous rolling liquid, adopt a brand-new application process, obtain the battery aluminum foil with high dyne value and excellent mechanical property, meet the adhesive force requirement of the battery foil carbon-coated slurry without corona treatment, greatly improve the processing efficiency, reduce the processing and manufacturing cost and have wide application prospect.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a preparation method and application of an aqueous rolling liquid for rolling a power battery aluminum foil, which are safe in an aqueous system, low in rolling cost, high in working procedure efficiency, high in cell aluminum foil dyne value, strong in corrosion inhibition capability and excellent in mechanical property, so that the surface property of the cell foil is improved, and the preparation method and application of the aqueous rolling liquid have wide application prospects.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the water-based rolling liquid for rolling the aluminum foil of the power battery comprises the following components in percentage by mass: 9-15% of rolling additive, 1-5% of bisimidazoline quaternary ammonium salt corrosion inhibitor and 80-90% of deionized water.
The rolling additive comprises 25-35% of fatty acid, 5-15% of triethanolamine, 5-10% of anionic emulsifier, 20-30% of extreme pressure antiwear agent, 2-6% of bactericide and 10-20% of boundary lubricant.
The fatty acid is tall oil acid or isooctanoic acid.
The extreme pressure antiwear agent is prepared by compounding chlorinated fatty acid and vulcanized fatty acid according to the mass ratio of 1:1.
The preparation method of the water-based rolling liquid comprises the following steps: heating deionized water to 30-40 ℃, adding fatty acid and triethanolamine, stirring uniformly, adding an anionic emulsifier, an extreme pressure antiwear agent, a boundary lubricant and a bactericide, stirring at 45-60 ℃ for 20-40min, adding a bisimidazoline quaternary ammonium salt corrosion inhibitor, and dispersing in an ultrasonic disperser with the power of 20-30KHz for 5-10min to obtain the aqueous rolling liquid for rolling the aluminum foil of the power battery.
Further, the anionic emulsifier is laureth phosphate or isomeric tridecyl ether phosphate.
Further, the bactericide is 1,3, 5-tris (2-hydroxyethyl) -hexahydrotriazine or N, N-methylenedimorpholine.
Further, the boundary lubricant is prepared by dehydrating dibasic acid and pentaerythritol at 180 ℃ according to a molar ratio of 4:1, wherein the dibasic acid is any one of glutaric acid, adipic acid or pimelic acid.
Further, the preparation method of the bisimidazoline quaternary ammonium salt corrosion inhibitor comprises the following steps:
and (3) adding malonic acid, diethylenetriamine and dimethylbenzene into a reaction flask carrying a condensation and water separator under the nitrogen atmosphere, reacting for 2-5h at 150-170 ℃ until no water flows out of the water separator, and then heating to 220-240 ℃ for reduced pressure distillation to obtain the bisimidazoline intermediate. The preparation process comprises the following steps:
and (2) adding the bisimidazoline intermediate and N, N-dimethylformamide into a reaction flask under the nitrogen atmosphere, uniformly stirring, adding long-chain brominated fatty acid, reacting for 24-48 hours at 80-100 ℃, distilling under reduced pressure, and drying to obtain the bisimidazoline quaternary ammonium salt corrosion inhibitor. The preparation reaction formula is as follows:
Further, in the step (1), the molar ratio relationship of malonic acid and diethylenetriamine is 1 (2.05-2.2).
Further, in the step (2), the long-chain brominated fatty acid is any one of 12-bromododecanoic acid, 14-bromotetradecanoic acid or 16-bromohexadecanoic acid.
Further, in the step (2), the molar ratio relationship of the bisimidazoline intermediate and the long-chain brominated fatty acid is 1 (4.1-4.5).
Further, the prepared water-based rolling liquid is evenly sprayed onto a working and supporting roller of a middle/finishing mill through a nozzle under the spraying pressure of 0.5-1MPa and the flow rate of 325-650L/min, then 1060 alloy blanks with the initial thickness of 42um are rolled for multiple times, the rolling speed is 500-800m/min, the aluminum foil with the thickness of 12-15 mu m is obtained, rolling impurities generated in the rolling process are filtered by using a Huffman flat bed, the aluminum foil is cooled to room temperature, and the aluminum foil for the power battery is obtained through slitting and fine cutting.
By adopting the technical scheme, the invention has the beneficial effects that:
The invention takes malonic acid and diethylenetriamine as raw materials, takes long-chain brominated fatty acid as quaternizing agent, synthesizes the bisimidazoline quaternary ammonium salt corrosion inhibitor, and is compounded with fatty acid, anionic emulsifier, boundary lubricant system and the like to obtain water-based rolling liquid which is stable in dispersion with water energy, strong in corrosion inhibition capability, good in lubricating capability and bacteria-resistant, impurities generated in the rolling process are filtered by using a Huffman flat bed, and the aluminum foil for the power battery is obtained through slitting and fine cutting.
(1) The rolling additive contains fatty acid, fatty alcohol, esters and other polar groups, can be firmly adsorbed on the metal surface, realizes the separation of a roller and an aluminum foil, and plays a role in lubrication; the bisimidazoline quaternary ammonium salt corrosion inhibitor contains long-chain fatty acid and rolling additive, has structural similarity and good compatibility, and increases the adsorption quantity of hydrophilic groups on the surface of the aluminum foil, so that the surface wettability of the aluminum foil is excellent, and the dyne value of the surface of the aluminum foil is improved.
(2) The N=C double bond on the imidazoline ring and the lone pair electron on the nitrogen atom can be covalently combined with the empty orbit of the periphery of the metal, and the covalent bond and the adsorption effect are generated on the surface of the aluminum foil, so that a layer of protective film is formed; meanwhile, the cationic hydrophilic groups taking N atoms as the center in the bisimidazoline quaternary ammonium salt corrosion inhibitor are mutually attracted through negative charges acted on the surface of the aluminum foil by static electricity, long-chain carbon hydrophobic groups are regularly and directionally arranged outside, and a layer of compact protective film is formed on the surface of the aluminum foil, so that corrosion inhibition efficiency is gradually increased, and the aluminum foil is protected.
(3) The water-based rolling liquid forms a layer of compact and tough lubricating film on a working roller of an aluminum foil rolling mill, plays a role in cooling protection, converts direct contact between an aluminum foil and the roller into indirect contact, slows down negative effects of the roller caused by thermal fatigue, reduces abrasion of the roller surface, and further improves the surface quality of the aluminum foil; the battery aluminum foil obtained by adopting the novel application process is rolled for multiple times, so that the tissue uniformity is improved, and the tensile strength and the elongation of the aluminum foil are obviously improved.
(4) The water-based system is safe, and the oil-based system needs to be provided with a fire-fighting means, so that fire accidents of a rolling mill are often caused by low oil smoke or electric conductivity; the rolling cost of the water-based system is low, and the comprehensive cost can be reduced; the efficiency of the post-process of the aqueous system is high, the post-process of the battery foil is aqueous pre-coated carbon, the oily system needs to remove oil and carry out corona treatment to reduce oil, the processes greatly limit the improvement of the efficiency and greatly improve the processing cost, and the aluminum foil rolled by the aqueous system does not need the processes, so that the requirements can be directly met.
Drawings
FIG. 1 is a graph showing the effect of the water-based rolled precoated carbon.
Fig. 2 is a graph showing the effect of oil-based rolled precoated carbon.
Detailed Description
The compounds of the present invention, and methods for their preparation and use are described in further detail below in conjunction with the specific examples. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Example 1
(1) 35Mmol of malonic acid, 74.2mmol of diethylenetriamine and 280mL of xylene are added into a reaction flask carrying a condensation and water separator under the nitrogen atmosphere, the mixture is reacted for 4 hours at 160 ℃ until no water flows out of the water separator, and then the mixture is heated to 230 ℃ and distilled under reduced pressure, so as to obtain the bisimidazoline intermediate.
(2) Under the nitrogen atmosphere, 30mmol of the bis-imidazoline intermediate and 350mL of N, N-dimethylformamide are added into a reaction flask, 125mmol of 12-bromododecanoic acid is added after stirring uniformly, the reaction is carried out for 36h at 90 ℃, and the bis-imidazoline quaternary ammonium salt corrosion inhibitor is obtained after reduced pressure distillation and drying.
(3) 90G of deionized water is heated to 35 ℃, 9g of rolling additive is added, wherein the rolling additive comprises 30% of tall oil acid, 15% of triethanolamine, 10% of lauryl ether phosphate, 25% of chlorinated fatty acid compound vulcanized fatty acid, 15% of glutaric acid and pentaerythritol reactant and 5% of 1,3, 5-tris (2-hydroxyethyl) -hexahydrotriazine by mass percent, stirring is carried out for 30min at 55 ℃, then 1g of bisimidazoline quaternary ammonium salt corrosion inhibitor is added, and dispersion is carried out for 8min in an ultrasonic disperser with power of 25KHz, thus obtaining the water-based rolling liquid for rolling the aluminum foil of the power battery.
Example 2
(1) 50Mmol of malonic acid, 102.5mmol of diethylenetriamine and 100mL of xylene are added into a reaction flask carrying a condensation and water separator under the nitrogen atmosphere, the mixture is reacted for 2 hours at 170 ℃ until no water flows out of the water separator, and then the mixture is heated to 240 ℃ and distilled under reduced pressure to obtain the bisimidazoline intermediate.
(2) Under the nitrogen atmosphere, 40mmol of the bis-imidazoline intermediate and 400mL of N, N-dimethylformamide are added into a reaction flask, after uniform stirring, 164mmol of 14-bromotetradecanoic acid is added, the reaction is carried out for 24 hours at 100 ℃, and the bis-imidazoline quaternary ammonium salt corrosion inhibitor is obtained after reduced pressure distillation and drying.
(3) 88G of deionized water is heated to 40 ℃,10 g of rolling additive is added, wherein the rolling additive comprises 25% of isooctanoic acid, 15% of triethanolamine, 10% of isomeric tridecanol ether phosphate, 30% of chlorinated fatty acid compound vulcanized fatty acid, 14% of adipic acid and pentaerythritol reactant and 6% of N, N-methylene dimorpholine by mass percent, stirring is carried out for 20min at 60 ℃, then 2g of bisimidazoline quaternary ammonium salt corrosion inhibitor is added, and dispersion is carried out for 5min in an ultrasonic disperser with the power of 30KHz, thus obtaining the water-based rolling liquid for rolling the aluminum foil of the power battery.
Example 3
(1) 25Mmol of malonic acid, 55mmol of diethylenetriamine and 250mL of xylene are added into a reaction flask carrying a condensation and water separator under the nitrogen atmosphere, the mixture is reacted for 5 hours at 150 ℃ until no water flows out of the water separator, and then the mixture is heated to 220 ℃ and distilled under reduced pressure, so as to obtain the bisimidazoline intermediate.
(2) Under the nitrogen atmosphere, 20mmol of the bis-imidazoline intermediate and 300mL of N, N-dimethylformamide are added into a reaction flask, after uniform stirring, 90mmol of 16-bromohexadecanoic acid is added, the reaction is carried out for 48 hours at 80 ℃, and the bis-imidazoline quaternary ammonium salt corrosion inhibitor is obtained after reduced pressure distillation and drying.
(3) 85G of deionized water is heated to 30 ℃, 12g of rolling additive is added, wherein the rolling additive comprises 35% of tall oil acid, 5% of triethanolamine, 5% of lauryl ether phosphate, 30% of chlorinated fatty acid compound vulcanized fatty acid, 20% of pimelic acid and pentaerythritol reactant and 5% of 1,3, 5-tris (2-hydroxyethyl) -hexahydrotriazine by mass percentage, stirring is carried out for 40min at 45 ℃, then 3g of bisimidazoline quaternary ammonium salt corrosion inhibitor is added, and dispersion is carried out for 10min in an ultrasonic disperser with 20KHz power, thus obtaining the water-based rolling liquid for rolling the aluminum foil of the power battery.
Example 4
(1) 18Mmol of malonic acid, 38.7mmol of diethylenetriamine and 115mL of xylene are added into a reaction flask carrying a condensation and water separator under the nitrogen atmosphere, and reacted for 4 hours at 165 ℃ until no water flows out of the water separator, and then the mixture is heated to 235 ℃ and distilled under reduced pressure to obtain the bisimidazoline intermediate.
(2) Under the nitrogen atmosphere, 15mmol of the bis-imidazoline intermediate and 180mL of N, N-dimethylformamide are added into a reaction flask, after uniform stirring, 66mmol of 12-bromododecanoic acid is added, the reaction is carried out for 48 hours at 95 ℃, and the bis-imidazoline quaternary ammonium salt corrosion inhibitor is obtained after reduced pressure distillation and drying.
(3) 82G of deionized water is heated to 35 ℃, 14g of rolling additive is added, wherein the rolling additive comprises 30% of isooctanoic acid, 10% of triethanolamine, 10% of isomeric tridecanol ether phosphate, 28% of chlorinated fatty acid compound vulcanized fatty acid, 20% of glutaric acid and pentaerythritol reactant and 2% of N, N-methylene dimorpholine by mass percent, stirring is carried out for 35min at 55 ℃, then 4g of bisimidazoline quaternary ammonium salt corrosion inhibitor is added, and dispersion is carried out for 8min in an ultrasonic disperser with the power of 28KHz, thus obtaining the water-based rolling liquid for rolling the aluminum foil of the power battery.
Example 5
(1) 10Mmol of malonic acid, 21mmol of diethylenetriamine and 160mL of xylene are added into a reaction flask carrying a condensation and water separator under the nitrogen atmosphere, the mixture is reacted for 5 hours at 160 ℃ until no water flows out of the water separator, and then the mixture is heated to 240 ℃ and distilled under reduced pressure, so as to obtain the bisimidazoline intermediate.
(2) Under the nitrogen atmosphere, 8mmol of the bis-imidazoline intermediate and 120mL of N, N-dimethylformamide are added into a reaction flask, after being stirred uniformly, 35mmol of 14-bromotetradecanoic acid is added, the reaction is carried out for 36 hours at 95 ℃, and the bis-imidazoline quaternary ammonium salt corrosion inhibitor is obtained after reduced pressure distillation and drying.
(3) 80G of deionized water is heated to 40 ℃,15 g of rolling additive is added, wherein the rolling additive comprises 35% of isooctanoic acid, 10% of triethanolamine, 9% of isomeric tridecanol ether phosphate, 25% of chlorinated fatty acid compound vulcanized fatty acid, 17% of adipic acid and pentaerythritol reactant and 4% of 1,3, 5-tris (2-hydroxyethyl) -hexahydrotriazine by mass percent, stirring is carried out for 35min at 60 ℃, then 5g of bisimidazoline quaternary ammonium salt corrosion inhibitor is added, and dispersion is carried out for 9min in an ultrasonic disperser with power of 25KHz, thus obtaining the water-based rolling liquid for rolling the aluminum foil of the power battery.
Comparative example 1
90G of deionized water is heated to 35 ℃,10 g of rolling additive is added, wherein the rolling additive comprises 30% of tall oil acid, 15% of triethanolamine, 10% of lauryl ether phosphate, 25% of chlorinated fatty acid compound vulcanized fatty acid, 15% of glutaric acid and pentaerythritol reactant and 5% of 1,3, 5-tris (2-hydroxyethyl) -hexahydrotriazine by mass percentage, and the mixture is dispersed in an ultrasonic disperser with the power of 25KHz for 8min, so that the aqueous rolling liquid for rolling the aluminum foil of the power battery is obtained.
Comparative example 2
92G of D80 solvent oil, 5g of lauryl alcohol and 3g of methyl laurate are dispersed in an ultrasonic disperser with the power of 25KHz for 8min, so as to obtain the oily rolling liquid for rolling the aluminum foil of the power battery.
And (3) testing a dyne value: reference is made to GB/T22638.4-2008 section 4 of aluminium foil test method: measurement of surface wetting tension (cutting aluminum foil into strips of 8cm×6 cm), soaking in alcohol for 1h, wiping and drying, uniformly wiping 2g of prepared rolling liquid on the surface of the battery foil, and testing the wetting tension dyne value of the surface of the aluminum foil by using a dyne pen.
Contact angle test: the contact angle of the aluminum foil surface with water was measured using a contact angle tester.
TABLE 1 dyne and contact angle test
| Dyne value (dyn/cm) | Contact angle (°) | |
| Example 1 | 33 | 58.4 |
| Example 2 | 35 | 56.3 |
| Example 3 | 35 | 55.8 |
| Example 4 | 36 | 51.5 |
| Example 5 | 36 | 48.0 |
| Comparative example 1 | 31 | 60.1 |
| Comparative example 2 | <30 | 65.3 |
The dyne value, i.e., the surface tension coefficient, represents the force of traction between two adjacent parts of the liquid surface per unit length, and generally, the higher the dyne value, the better the wettability, otherwise, the worse the wettability; as shown by the test results of the table, the dyne value of the surface of the aluminum foil of the battery is obviously improved along with the increase of the contents of the rolling additive and the bisimidazoline quaternary ammonium salt corrosion inhibitor in the aqueous rolling liquid, wherein the dyne value in the implementation 4 reaches 36dyn/cm, and the rolling additive contains water-soluble polar groups such as fatty acid, triethanolamine and esters and can be firmly adsorbed on the surface of the metal to play a role in lubrication; the bisimidazoline quaternary ammonium salt corrosion inhibitor contains long-chain fatty acid, has structural similarity with a rolling additive, has good compatibility, increases the adsorption quantity of hydrophilic groups on the surface of the aluminum foil, ensures that the surface wettability of the aluminum foil is excellent, and improves the dyne value of the aluminum foil; in comparative example 2, the common rolling oil was applied, and the surface dyne value was <30 dyne/cm, and the dyne value was low.
Corrosion soaking experiment of cell foil blank 1060: and immersing the 1060 battery foil blank aluminum plate in the rolling liquid, respectively standing at 25 ℃ and 60 ℃ for 24 hours, and observing whether the surface of the aluminum plate is corroded.
Table 2 test of 1060 aluminium plate Corrosion soaking experiment
| 25℃ | 60℃ | |
| Example 1 | No corrosion | No corrosion |
| Example 2 | No corrosion | No corrosion |
| Example 3 | No corrosion | No corrosion |
| Example 4 | No corrosion | No corrosion |
| Example 5 | No corrosion | No corrosion |
| Comparative example 1 | No corrosion | No corrosion |
| Comparative example 2 | No corrosion | No corrosion |
As shown by the test results of the table, the aqueous rolling liquid adopted in the embodiment has no corrosiveness to the aluminum plate, because the N=C double bond on the imidazoline ring and the lone pair electron on the nitrogen atom can be covalently combined with the empty orbit of the periphery of the metal, and the water-based rolling liquid has adsorption effect with the surface of the aluminum foil, so that a layer of protective film is formed; meanwhile, the cationic hydrophilic groups taking N atoms as the center in the bisimidazoline quaternary ammonium salt corrosion inhibitor are mutually attracted through negative charges acted on the surface of the aluminum plate by static electricity, long-chain carbon hydrophobic groups are regularly and directionally arranged outside, and a layer of compact protective film is formed on the surface of the 1060 aluminum plate, so that the aluminum plate is protected.
Friction coefficient measurement: the friction coefficient is measured by a four-ball friction and wear testing machine, the rotating speed of the four-ball milling testing machine is set to 900r/min, the static pressure is 300N, the temperature is 75 ℃, the time is 30min, and the friction coefficient is measured.
OSP4 scratch board experiment: 2g of the prepared rolling liquid is uniformly smeared on the surface of a battery foil with the size of 8cm multiplied by 6cm multiplied by 15 mu m, and a precoating experiment is carried out by using an OSP4 roller rod to observe the carbon smearing state.
Preferably: the aluminum foil is uniformly covered, and no coating leakage point exists.
Generally: the surface of the aluminum foil is covered substantially uniformly with individual missing dots.
The difference is: the surface of the aluminum foil cannot be covered and large-area coating is omitted.
TABLE 3 test of lubricating Properties and carbon coating Properties
| Oil film strength (kgf) | Coefficient of friction | OSP4 scratch board experiment | |
| Example 1 | 85 | 0.089 | Excellent (excellent) |
| Example 2 | 95 | 0.086 | Excellent (excellent) |
| Example 3 | 104 | 0.084 | Excellent (excellent) |
| Example 4 | 114 | 0.081 | Excellent (excellent) |
| Example 5 | 119 | 0.078 | Excellent (excellent) |
| Comparative example 1 | 77 | 0.092 | In general |
| Comparative example 2 | 32 | 0.095 | Difference of difference |
As shown by the test results of the table, the aqueous rolling liquid prepared by the embodiment has high oil film strength, low friction coefficient and good OSP4 scraping plate experiment, and can effectively improve the lubricating performance and the carbon coating performance, so that the aqueous rolling liquid for rolling the power battery foil has stronger synergistic effect among all components, the volatilization amount of the rolling liquid is very small in the rolling process, the production process is greatly simplified, and the production cost is reduced.
Example 6
The prepared aqueous rolling liquid (prepared in example 1) is uniformly sprayed into an aluminum foil through a nozzle and onto a working roller and a supporting roller of a finishing mill under the spraying pressure of 1MPa and the flow rate of 450L/min, then 1060 alloy blanks with the initial thickness of 42um are rolled for multiple times, the rolling speed is 500m/min, the aluminum foil with the thickness of 15 mu m is obtained, rolling impurities generated in the rolling process are filtered by using a Huffman flat bed, the aluminum foil is cooled to the room temperature, and the aluminum foil for the power battery is obtained through slitting and fine cutting.
Comparative example 3
The prepared oily rolling liquid (prepared by comparative example 2) is uniformly sprayed into an aluminum foil through a nozzle onto a working roll and a supporting roll of a finishing mill under the spraying pressure of 1MPa and the flow rate of 1600L/min, then 1060 alloy blanks with the initial thickness of 42um are rolled for multiple times, the rolling speed is 500m/min, the aluminum foil with the thickness of 15 mu m is obtained, rolling impurities generated in the rolling process are filtered by using a Huffman flat bed, the aluminum foil is cooled to the room temperature, and the aluminum foil for the power battery is obtained through slitting and fine cutting.
Tensile strength and elongation test: a small-sized stretcher is adopted to carry out tensile test on the prepared battery aluminum foil sample, 1500-mesh sand paper is adhered to a clamp of the stretcher, and a sample clamping end is fixed, so that in a subsequent stretching experiment, the parallel section in the middle is broken as much as possible, and the theoretical load is 3kN.
TABLE 4 mechanical property test
| Contact angle (°) | Dyne value (dyn/cm) | OSP4 Rolling coating experiment | Tensile strength (MPa) | Elongation (%) | |
| Example 6 | 52 | 35 | Excellent (excellent) | 206 | 4.5 |
| Comparative example 3 | 62 | 30 | Difference of difference | 201 | 4.1 |
As shown by the test results of the table, the water-based rolling liquid prepared in the embodiment can form a layer of compact and tough lubricating film on the working roller of the aluminum foil rolling mill, plays a role in cooling protection, converts direct contact between the aluminum foil and the roller into indirect contact, slows down negative influence of the roller caused by thermal fatigue, reduces abrasion of the roller surface, and further improves the surface quality of the aluminum foil; in comparative example 2, an oily rolling liquid was used, and even if the flow rate was significantly increased, the cooling effect was poor, and the overall performance of the aluminum foil was still inferior to that of example 6; therefore, the battery aluminum foil prepared by adopting the novel application process improves the tissue uniformity through optimizing multi-pass rolling, so that the tensile strength and the elongation of the aluminum foil are obviously improved, the alloy performance is not abnormal, the carbon coating performance is excellent, the dyne value is high, and the lubricating performance is good.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
1. The preparation method of the aqueous rolling liquid for rolling the aluminum foil of the power battery is characterized by comprising the following components in percentage by mass: 9-15% of rolling additive, 1-5% of bisimidazoline quaternary ammonium salt corrosion inhibitor and 80-90% of deionized water;
The rolling additive comprises 25-35% of fatty acid, 5-15% of triethanolamine, 5-10% of anionic emulsifier, 20-30% of extreme pressure antiwear agent, 2-6% of bactericide and 10-20% of boundary lubricant;
The fatty acid is tall oil acid or isooctanoic acid;
the extreme pressure antiwear agent is prepared by compounding chlorinated fatty acid and vulcanized fatty acid according to the mass ratio of 1:1;
The preparation method of the aqueous rolling liquid comprises the following steps: heating deionized water to 30-40 ℃, adding fatty acid and triethanolamine, stirring uniformly, adding an anionic emulsifier, an extreme pressure antiwear agent, a boundary lubricant and a bactericide, stirring at 45-60 ℃ for 20-40min, adding a bisimidazoline quaternary ammonium salt corrosion inhibitor, and dispersing in an ultrasonic disperser with the power of 20-30KHz for 5-10min to obtain an aqueous rolling liquid for rolling the aluminum foil of the power battery;
The preparation method of the bisimidazoline quaternary ammonium salt corrosion inhibitor comprises the following steps:
adding malonic acid, diethylenetriamine and dimethylbenzene into a reaction flask carrying a condensation and water knockout drum under the nitrogen atmosphere, reacting for 2-5 hours at 150-170 ℃ until no water flows out of the water knockout drum, and then heating to 220-240 ℃ for reduced pressure distillation to obtain a bisimidazoline intermediate;
And (2) adding the bisimidazoline intermediate and N, N-dimethylformamide into a reaction flask under the nitrogen atmosphere, uniformly stirring, adding long-chain brominated fatty acid, reacting for 24-48 hours at 80-100 ℃, distilling under reduced pressure, and drying to obtain the bisimidazoline quaternary ammonium salt corrosion inhibitor.
2. The method for preparing an aqueous rolling fluid for rolling aluminum foil of power battery according to claim 1, wherein the anionic emulsifier is laureth phosphate or isomeric tridecyl ether phosphate.
3. The method for preparing an aqueous rolling fluid for rolling an aluminum foil of a power battery according to claim 1, wherein the bactericide is 1,3, 5-tris (2-hydroxyethyl) -hexahydrotriazine or N, N-methylenedimorpholine.
4. The method for preparing an aqueous rolling fluid for rolling an aluminum foil of a power battery according to claim 1, wherein the boundary lubricant is prepared by dehydrating a dibasic acid and pentaerythritol at 180 ℃ according to a molar ratio of 4:1, wherein the dibasic acid is any one of glutaric acid, adipic acid and pimelic acid.
5. The method for preparing an aqueous rolling solution for rolling aluminum foil of a power battery according to claim 1, wherein the molar ratio of malonic acid to diethylenetriamine in the step (1) is 1 (2.05-2.2).
6. The method for preparing an aqueous rolling fluid for rolling aluminum foil of power battery according to claim 1, wherein the long-chain bromofatty acid in the step (2) is any one of 12-bromododecanoic acid, 14-bromotetradecanoic acid or 16-bromohexadecanoic acid.
7. The method for preparing the aqueous rolling liquid for rolling the aluminum foil of the power battery according to claim 1, wherein the molar ratio relationship of the bisimidazoline intermediate and the long-chain brominated fatty acid in the step (2) is 1 (4.1-4.5).
8. Use of the aqueous rolling liquid obtained by the preparation method according to any one of claims 1 to 7 in rolling of aluminum foil of power battery, characterized in that the aqueous rolling liquid is uniformly sprayed into the aluminum foil through a spray nozzle and onto a working and supporting roller of a finishing mill under the spray pressure of 0.5 to 1MPa and the flow rate of 325 to 650L/min, then 1060 alloy blank with the initial thickness of 42 μm is rolled for multiple times at the rolling speed of 500 to 800m/min to obtain aluminum foil with the thickness of 12 to 15 μm, rolling impurities generated in the rolling process are filtered by using a huffman flat bed, cooled to room temperature, and cut and fine-cut to obtain the aluminum foil for power battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410888167.XA CN118421391B (en) | 2024-07-04 | 2024-07-04 | Preparation method and application of water-based rolling liquid for rolling power battery aluminum foil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410888167.XA CN118421391B (en) | 2024-07-04 | 2024-07-04 | Preparation method and application of water-based rolling liquid for rolling power battery aluminum foil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118421391A CN118421391A (en) | 2024-08-02 |
| CN118421391B true CN118421391B (en) | 2024-08-30 |
Family
ID=92335538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410888167.XA Active CN118421391B (en) | 2024-07-04 | 2024-07-04 | Preparation method and application of water-based rolling liquid for rolling power battery aluminum foil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118421391B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103289671A (en) * | 2013-05-28 | 2013-09-11 | 四川安东油气工程技术服务有限公司 | Corrosion inhibitor and preparation method thereof |
| CN107311931A (en) * | 2017-07-04 | 2017-11-03 | 华东交通大学 | Water-soluble fatty acid imidazoline quinoline and its preparation method and application |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111423930A (en) * | 2020-04-03 | 2020-07-17 | 石家庄新泰特种油有限公司 | Process lubricating liquid for flat rolling of secondary cold rolled material under high pressure and preparation method thereof |
| CN117384693A (en) * | 2022-07-05 | 2024-01-12 | 武汉优米克新材料有限公司 | Environment-friendly copper plate and strip rolling liquid and preparation method thereof |
| EP4310164A1 (en) * | 2022-07-22 | 2024-01-24 | Speira GmbH | Cooling lubricant for the hot rolling of aluminium |
| CN117946802A (en) * | 2023-12-28 | 2024-04-30 | 江苏鑫露新材料有限公司 | Environment-friendly total-synthesis water-based aluminum alloy cutting fluid and preparation method thereof |
-
2024
- 2024-07-04 CN CN202410888167.XA patent/CN118421391B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103289671A (en) * | 2013-05-28 | 2013-09-11 | 四川安东油气工程技术服务有限公司 | Corrosion inhibitor and preparation method thereof |
| CN107311931A (en) * | 2017-07-04 | 2017-11-03 | 华东交通大学 | Water-soluble fatty acid imidazoline quinoline and its preparation method and application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118421391A (en) | 2024-08-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9742009B2 (en) | Aluminum foil for a current collector and method of manufacturing the same | |
| JP4558113B2 (en) | Inorganic / organic insulating coating for non-oriented silicon steel | |
| US4752405A (en) | Metal working lubricant | |
| CN102796594A (en) | Cold-rolled sheet rolling emulsified oil containing modified nano copper and preparation method thereof | |
| JP5771435B2 (en) | Aluminum foil for current collector | |
| CN118421391B (en) | Preparation method and application of water-based rolling liquid for rolling power battery aluminum foil | |
| US6107260A (en) | Aluminium or aluminium alloy moulding process lubricant, and aluminium or aluminium alloy plate for moulding processes | |
| CN1311292A (en) | Lubricated steel material excellent in antirust property and coating composition for steel material | |
| CA1154745A (en) | Metal drawing compound composition and method of use | |
| US10975324B2 (en) | Powder lubricant based on fatty acids and fatty acid glycerides and use thereof | |
| CN118440544A (en) | Antifriction coating, preparation method and application thereof and method for reducing friction of metal device | |
| US4350034A (en) | Metal drawing compound composition and method of use | |
| JP2023547979A (en) | Aluminum foil with improved wettability | |
| JP2005138294A (en) | Coated metal sheet excellent in lubricity and processability | |
| CN114798770B (en) | High-altitude aluminum foil and preparation method and application thereof | |
| CN114790408B (en) | Leveling liquid for cold-rolled steel plate | |
| CN112063437B (en) | Long-acting antirust oil capable of realizing rapid water replacement and preparation method thereof | |
| CN116179257B (en) | Environmentally friendly cutting fluid and preparation method thereof | |
| CN113265293B (en) | A kind of emulsion suitable for aluminum plate stamping and preparation method thereof | |
| CN116024030B (en) | Additive for rolling power battery foil and preparation method and application thereof | |
| CN115558539B (en) | Solid-liquid composite lubricating coating, preparation method and application | |
| JP2001240889A (en) | Lubricated steel with excellent rust prevention and its coating composition | |
| CN118562552A (en) | Oil-water composition for copper and copper alloy rolling and preparation method and application thereof | |
| CN118006385A (en) | Lubricant suitable for copper-steel composite board processing and preparation method thereof | |
| JP2002192220A (en) | Manufacturing method of cold drawn tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |