CN107974688A - 一种铝箔表面耐腐蚀涂层的涂布工艺 - Google Patents
一种铝箔表面耐腐蚀涂层的涂布工艺 Download PDFInfo
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- 239000005030 aluminium foil Substances 0.000 title claims abstract description 43
- 238000000576 coating method Methods 0.000 title claims abstract description 28
- 238000005260 corrosion Methods 0.000 title claims abstract description 17
- 230000007797 corrosion Effects 0.000 title claims abstract description 17
- 239000011248 coating agent Substances 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 238000004381 surface treatment Methods 0.000 claims abstract description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 claims description 2
- 239000008367 deionised water Substances 0.000 claims description 2
- 229910021641 deionized water Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052744 lithium Inorganic materials 0.000 abstract description 5
- 238000009826 distribution Methods 0.000 abstract description 3
- 239000012785 packaging film Substances 0.000 abstract description 3
- 229920006280 packaging film Polymers 0.000 abstract description 3
- 239000004743 Polypropylene Substances 0.000 description 5
- 239000003792 electrolyte Substances 0.000 description 5
- -1 polypropylene Polymers 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 239000011888 foil Substances 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 229920006255 plastic film Polymers 0.000 description 3
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000005025 cast polypropylene Substances 0.000 description 2
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000012661 block copolymerization Methods 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920005633 polypropylene homopolymer resin Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
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- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/22—Light metals
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
本发明公开了一种铝箔表面耐腐蚀涂层的涂布工艺，其特征在于，铝箔采用微凹涂布工艺进行双面辊涂表面处理液后，在烘箱中干燥烘烤；所述铝箔使用前经脱脂处理。本发明制得的铝箔表面涂层平整，分布更加均匀且二次加工制成锂电池包装膜时耐腐蚀性能好。
Description
技术领域
本发明涉及一种铝箔表面耐腐蚀涂层的涂布工艺，属于电池包装材料技术领域。
背景技术
常用的锂电池包装材料由从内至外依次复合的铝箔芯层3、聚丙烯薄膜层5、粘合剂层2、聚丙烯薄膜层5、尼龙层1及耐腐蚀性膜层4。铝箔芯层3表面附有抗酸性膜层(主要为磷酸盐膜层、铬酸盐膜层、氟化物膜层等)，防止电解液中产生的氢氟酸腐蚀铝箔而产生漏液，影响铝塑膜的阻隔性能，因此铝箔芯层3表面抗腐蚀性膜层处理的质量影响着铝塑膜的使用安全性。目前国内金属表面处理大多数采用六价铬溶液钝化进行反应型金属表面处理，但容易造成环境污染且膜层分布不均匀。随着无Cr6+趋势的发展，新型微凹涂布技术应用越来越广泛，涂布分布更加均匀，且二次加工制成锂电池包装膜时耐腐蚀性能好。
发明内容
本发明所要解决的问题是提供一种铝箔表面耐腐蚀涂层的涂布工艺，以解决膜层分布不均匀的问题。
为了解决上述问题，本发明的技术方案是：一种铝箔表面耐腐蚀涂层的涂布工艺，其特征在于，铝箔采用微凹涂布工艺进行双面辊涂表面处理液后，在烘箱中干燥烘烤；所述铝箔使用前经脱脂处理。
优选地，所述脱脂处理的具体方法为：将铝箔进行碱洗，利用氢氧化钠和碳酸钠或磷酸三钠配制成0.9mol/L的水溶液中清洗1分钟，并用去离子水清洗烘干。
优选地，所述铝箔为日本东洋铝业生产的型号为8079的O态软质铝箔。
优选地，所述表面处理液选用帕卡表面处理科技有限公司生产的铬处理剂SG-L701，浓度为1.3g/m2。
优选地，所述表面处理剂在铝箔上的涂布量为0.675～2.5g/m3。
优选地，所述干燥烘烤的温度为160℃。
本发明制得的铝箔表面涂层平整，分布更加均匀且二次加工制成锂电池包装膜时耐腐蚀性能好。
附图说明
图1为锂电池包装材料的结构示意图；
图2为微凹涂布装置的结构示意图。
具体实施方式
为使本发明更明显易懂，兹以优选实施例，并配合附图作详细说明如下。
实施例
一种铝箔表面耐腐蚀涂层的涂布工艺：
1、铝箔脱脂处理
铝箔选用日本东洋铝业的45微米厚的合金型号为8079的O态软质铝箔，将铝箔进行碱洗，利用氢氧化钠和碳酸钠或磷酸三钠配制成0.9mol/L的水溶液中清洗1分钟，并用去离子水清洗烘干。
2、铝箔涂布处理
涂布表面处理液选用帕卡表面处理科技有限公司AL用3价铬处理剂SG-L701，浓度为1.3g/m2，采用微凹涂布工艺进行铝箔的双面辊涂，然后在160℃下的烘箱内进行干燥烘烤；微凹涂布装置如图2所示，放卷机6将铝箔7放出后，铝箔7经液体槽一8内的辊筒一9涂布铝箔7的一面，然后用刮刀刮均匀，铝箔7再经导辊一10至液体槽二11内的辊筒二12涂布铝箔7的另一面，再用刮刀刮均匀，然后经烘箱13进行烘烤后，经导辊二14后再经冷却辊15，由收卷机16收集。
3、制作热塑性树脂膜
以马来酸酐接枝聚丙烯树脂(日本三井化学QE840)为内层、均聚聚丙烯树脂(中海壳牌的HP510M)为中间层、嵌段共聚聚丙烯(沙特基础工业公司PP673K)与聚丙烯弹性体(埃克森美孚3000)重量比1∶1混合后为外层，内、中间、外三层厚度比为1∶4∶1，螺杆加工温度为240～255℃，膜口温度为230～245℃，在三层流延共挤机制作成厚度为45μm的流延聚丙烯薄膜，作为热塑性树脂膜。
将耐热性树脂层、45微米厚的铝箔以及热塑性树脂膜采用干式复合法进行复合制得成品膜。
对制得的成品膜进行耐电解液腐蚀性测试，配置1mol/LLiPF6电解液(溶剂为体积比为1∶1∶1的碳酸二甲酯、碳酸乙酯和碳酸二乙酯)，取表面平整、洁净、无皱折，宽15mm，长100mm的膜供测试。将样品膜完全浸入电解液中并放置于85℃恒温水浴中，恒温至需要的时间。取出并用自来水洗净，测试AL/CPP层间剥离强度。测试结果如表1所示。
表1
由表1可见，AL箔表面微凹涂布处理的铝塑膜耐电解液性能更加优异。
Claims (6)
1.一种铝箔表面耐腐蚀涂层的涂布工艺，其特征在于，铝箔采用微凹涂布工艺进行双面辊涂表面处理液后，在烘箱中干燥烘烤；所述铝箔使用前经脱脂处理。
2.如权利要求1所述的铝箔表面耐腐蚀涂层的涂布工艺，其特征在于，所述脱脂处理的具体方法为：将铝箔进行碱洗，利用氢氧化钠和碳酸钠或磷酸三钠配制成0.9mol/L的水溶液中清洗1分钟，并用去离子水清洗烘干。
3.如权利要求1所述的铝箔表面耐腐蚀涂层的涂布工艺，其特征在于，所述铝箔为日本东洋铝业生产的型号为8079的O态软质铝箔。
4.如权利要求1所述的铝箔表面耐腐蚀涂层的涂布工艺，其特征在于，所述表面处理液选用帕卡表面处理科技有限公司生产的铬处理剂SG-L701，浓度为1.3g/m2。
5.如权利要求1所述的铝箔表面耐腐蚀涂层的涂布工艺，其特征在于，所述表面处理剂在铝箔上的涂布量为0.675～2.5g/m3。
6.如权利要求1所述的铝箔表面耐腐蚀涂层的涂布工艺，其特征在于，所述干燥烘烤的温度为160℃。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108610863A (zh) * | 2018-05-02 | 2018-10-02 | 安徽弘邦天力铝箔有限公司 | 一种防紫外线辐射及耐酸碱腐蚀的涂层、铝箔及铝箔制造方法 |
| CN108754472A (zh) * | 2018-06-22 | 2018-11-06 | 惠州市百泉河实业有限公司 | 一种适用于铝塑膜铝箔处理的钝化液 |
| CN110828709A (zh) * | 2018-08-08 | 2020-02-21 | 韩田大学校产学协力团 | 中大型二次电池用铝软包薄膜的制造方法 |
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| CN106207021A (zh) * | 2016-08-30 | 2016-12-07 | 上海紫江新材料科技有限公司 | 一种用热压工艺制成的锂电池软包装膜 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203406336U (zh) * | 2013-07-16 | 2014-01-22 | 江苏双星彩塑新材料股份有限公司 | 一种聚合物锂电池冲压包装膜 |
| CN106207021A (zh) * | 2016-08-30 | 2016-12-07 | 上海紫江新材料科技有限公司 | 一种用热压工艺制成的锂电池软包装膜 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108610863A (zh) * | 2018-05-02 | 2018-10-02 | 安徽弘邦天力铝箔有限公司 | 一种防紫外线辐射及耐酸碱腐蚀的涂层、铝箔及铝箔制造方法 |
| CN108754472A (zh) * | 2018-06-22 | 2018-11-06 | 惠州市百泉河实业有限公司 | 一种适用于铝塑膜铝箔处理的钝化液 |
| CN110828709A (zh) * | 2018-08-08 | 2020-02-21 | 韩田大学校产学协力团 | 中大型二次电池用铝软包薄膜的制造方法 |
| CN110828709B (zh) * | 2018-08-08 | 2022-05-27 | 拓普恩西株式会社 | 中大型二次电池用铝软包薄膜的制造方法 |
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