CN113878963A - 一种铝塑复合膜及其制备方法 - Google Patents

一种铝塑复合膜及其制备方法 Download PDF

Info

Publication number
CN113878963A
CN113878963A CN202111132347.8A CN202111132347A CN113878963A CN 113878963 A CN113878963 A CN 113878963A CN 202111132347 A CN202111132347 A CN 202111132347A CN 113878963 A CN113878963 A CN 113878963A
Authority
CN
China
Prior art keywords
aluminum
film
aluminum foil
plastic composite
adhesive
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.)
Pending
Application number
CN202111132347.8A
Other languages
English (en)
Inventor
杨慧慧
戴平翔
戴晓兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangxi Shengwei Material Co ltd
Zhuhai Smoothway Electronic Materials Co Ltd
Original Assignee
Jiangxi Shengwei Material Co ltd
Zhuhai Smoothway Electronic Materials Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangxi Shengwei Material Co ltd, Zhuhai Smoothway Electronic Materials Co Ltd filed Critical Jiangxi Shengwei Material Co ltd
Priority to CN202111132347.8A priority Critical patent/CN113878963A/zh
Publication of CN113878963A publication Critical patent/CN113878963A/zh
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1284—Application of adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/162—Cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/164—Drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • H01M50/121—Organic material
    • 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
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
    • H01M50/129—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers with two or more layers of only organic material
    • 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
    • H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
    • H01M50/145—Primary casings; Jackets or wrappings for protecting against damage caused by external factors for protecting against corrosion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B32B2037/243—Coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/10—Batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Laminated Bodies (AREA)

Abstract

本发明公开了一种铝塑复合膜及其制备方法，该铝塑复合膜由外层至内层依次包括PET膜、尼龙膜、铝箔和聚丙烯膜，步骤包括：(1)对铝箔的哑面和亮面均进行脱脂和耐腐蚀处理，脱脂处理采用碱液进行，耐腐蚀处理采用含Cr3+钝化剂进行；(2)在铝箔的亮面涂布粘结剂，借助粘结剂将铝箔和聚丙烯膜进行复合，粘结剂为树脂型粘结剂；(3)在铝箔的哑面涂布胶黏剂，借助胶黏剂将铝箔和尼龙膜进行复合，胶黏剂为聚氨酯粘合剂；(4)在尼龙膜表面涂布胶黏剂，借助胶黏剂将尼龙膜和PET膜进行复合，制得铝塑复合膜。通过该方法制得的铝塑复合膜可有效提高其内层的耐电解液性能，特别是长期耐电解液性能，以及能有效防护保护层不会被电解液腐蚀。

Description

一种铝塑复合膜及其制备方法
技术领域
本发明涉及锂电池技术领域，更具体地涉及一种铝塑复合膜及其制备方法。
背景技术
铝铝塑复合膜(以下简称铝塑膜)由外层的尼龙保护层、中间的铝层以及内层的CPP层组成。锂离子电池的电解液是由渗透性极强的有机溶剂，以及极易水解的六氟磷酸锂、六氟硼酸锂等组成，当电解液与铝塑膜内层接触时，电解液易将内层膜溶胀、腐蚀，故而铝塑膜的耐电解液性能，特别是耐电解液长期性，是决定锂电池性能好坏的一项重要指标。此外，铝塑膜保护层多数是采用尼龙膜，在电池生产过程中很容易被电解液腐蚀污染，造成电池不良，因此，如何有效防护电池表面不被电解液腐蚀，当前的电池厂家对铝塑膜的制备提出更高的需求。
发明内容
本发明的目的之一是提供一种铝塑复合膜的制备方法，通过该方法制得的铝塑复合膜可有效提高其内层的耐电解液性能，特别是长期耐电解液性能，以及能有效防护保护层不会被电解液腐蚀。
本发明的目的之二是提供上述方法制得的铝塑复合膜。
为了实现上述目的，本发明公开了一种铝塑复合膜的制备方法，该铝塑复合膜由外层至内层依次包括PET膜、尼龙膜、铝箔和聚丙烯膜，制备步骤包括：
(1)对铝箔的哑面和亮面均进行脱脂和耐腐蚀处理，脱脂处理采用碱液进行，耐腐蚀处理采用含Cr3+钝化剂进行；
(2)在铝箔的亮面涂布粘结剂，借助粘结剂将铝箔和聚丙烯膜进行复合，粘结剂为树脂型粘结剂；
(3)在铝箔的哑面涂布胶黏剂，借助胶黏剂将铝箔和尼龙膜进行复合，胶黏剂为聚氨酯粘合剂；
(4)在尼龙膜表面涂布胶黏剂，借助胶黏剂将尼龙膜和PET膜进行复合，制得铝塑复合膜。
与现有技术相比，本申请提供一种铝塑复合膜的制备方法，采用热法生产工艺制得铝塑复合膜，铝塑复合膜由外层至内层依次包括PET膜、尼龙膜、铝箔和聚丙烯膜。在制备的过程中，通过含Cr3+钝化剂处理铝箔的哑面和亮面，且在铝箔的亮面涂布树脂型粘结剂，经耐腐蚀处理后Cr3+与树脂型粘结剂的树脂交联后能形成致密的耐腐蚀皮膜，以提高长期耐电解液性能；同时在尼龙膜的外层复合PET膜(聚对苯二甲酸乙二醇酯)，能有效防护保护层(PET膜和尼龙膜)不会被电解液腐蚀。
较佳地，所述粘结剂为水性树脂或油性树脂，优选采用油性树脂，当粘结剂采用油性树脂粘结剂时，耐电解液性能更稳定。
较佳地，粘结剂的涂布量为0.5-4.0g/m2，干燥温度大于90℃。进一步，粘结剂为水性树脂粘结剂时，水性树脂粘结剂的涂布量优选为1-3g/m2，其干燥温度90-180℃；粘结剂为油性树脂粘结剂时，优选地，其干燥温度大于等于200℃。
较佳地，脱脂处理依次包括碱洗、离子水清洗、干燥。
较佳地，碱洗溶液采用NaOH溶液，干燥温度为120-220℃。
较佳地，耐腐蚀处理是将含Cr3+钝化剂涂布在铝箔双面，然后烘烤。
较佳地，含Cr3+钝化剂的涂布量为0.5-3.0g/m2，烘烤温度为120-220℃。
较佳地，步骤(2)中，将粘结剂涂布在铝箔的亮面后先进行干燥，再与聚丙烯膜进行复合，及冷却定型。
较佳地，步骤(3)中，铝箔和尼龙膜采用干式复合；
步骤(4)中，尼龙膜和PET膜采用干式复合。
较佳地，步骤(4)中，尼龙膜和PET膜复合后在50-85℃条件下固化2-7天。
相应地，本申请还提供一种铝塑复合膜，采用上述的铝塑复合膜的制备方法制得。
附图说明
图1为本发明铝塑复合膜的结构示意图。
图2为本发明铝塑复合膜的工艺流程图。
具体实施方式
为详细说明本发明的技术内容、构造特征、所实现目的及效果，以下结合实施方式并配合附图详予说明。
请参考图1，本发明提供的铝塑复合膜，由外层至内层依次包括PET膜100、尼龙膜200、铝箔300和聚丙烯膜400，PET膜100和尼龙膜200之间通过胶黏剂复合，尼龙膜200和铝箔300之间通过胶黏剂复合，铝箔300和聚丙烯膜400之间通过粘结剂复合。
下面结合图2并配合具体实施方式对本发明的铝塑复合膜的制备方法进行说明。其中，铝塑复合膜的制备方法中材料来源如下：
铝箔选用河南明泰铝业股份有限公司40μm8021-O态铝箔，水性树脂粘结剂选用日本尤尼吉可株式会社的YA-6015AJ，油性树脂粘结剂选用日本三井化学的R-200X，三价铬钝化处理剂选用上海纬凯光电新材料有限公司三价铬钝化处理剂VB108，CPP膜选用复合层是马来酸酐改性的40μm三层流延聚丙烯膜，尼龙膜选用德州东鸿制膜科技有限公司的25μm双向拉伸聚酰胺薄膜，PET膜选用东莞市佳能新材料有限公司8μmPET膜，胶黏剂选用东莞市研泰化学有限公司的MX-8347A和MX-8347B双组分聚氨酯粘合剂。
实施例1
一种铝塑复合膜的制备方法，该铝塑复合膜由外层至内层依次包括PET膜、尼龙膜、铝箔和聚丙烯膜，制备步骤包括：
(1)在铝箔的哑面和亮面均进行脱脂和耐腐蚀处理，
脱脂处理：放卷装置1将铝箔放卷经碱洗槽2进行脱脂，即将铝箔的哑面和亮面在4％质量浓度的NaOH溶液(在碱洗槽2)中清洗1min后，再用去离子水(碱洗槽2是多个槽子隔开且含水洗槽)清洗，在烘箱3中干燥即可；
耐腐蚀处理：将脱脂处理后的铝箔经过含三价铬钝化处理剂的槽中并采用微凹辊4对铝箔进行双面涂布，涂布量0.5g/m2，耐腐蚀层涂布后在烘箱5中200度烘烤20s；
(2)上述涂布后的铝箔经过胶槽6，胶槽6内含有水性树脂粘结剂，借助胶槽6对铝箔的亮面进行水性树脂粘结剂涂布，涂布量为3g/m2，涂布后在烘箱7中150℃烘烤20s；
(3)上述涂布后的铝箔与放卷辊9放卷的40μm厚的聚丙烯膜在复合辊8处复合热压复合，复合温度180-200℃，复合压力0.3-0.5Mpa，复合后的半成品经冷却辊10冷却(35℃)定形；
(4)上述处理后的半成品经过胶槽11，胶槽11内含有胶黏剂，借助胶槽11于铝箔的哑面处涂胶，涂布量4g/m2，经烘箱12干燥后，与放卷辊14放卷的15μm尼龙膜在复合辊13处采用80℃复合，经收卷辊15收卷；
(5)上述处理后的半成品经过胶槽16，胶槽16内含有胶黏剂，借助胶槽16于尼龙膜表面涂胶，涂布量4g/m2，经烘箱17干燥后，与放卷辊19放卷的8μmPET膜在复合辊18处采用80℃复合，经收卷辊20收卷，在干燥房中70℃固化6天，制得铝塑复合膜。
实施例2
一种铝塑复合膜的制备方法，该铝塑复合膜由外层至内层依次包括PET膜、尼龙膜、铝箔和聚丙烯膜，制备步骤包括：
(1)在铝箔的哑面和亮面均进行脱脂和耐腐蚀处理，
脱脂处理：放卷装置1将铝箔放卷经碱洗槽2进行脱脂，即将铝箔的哑面和亮面在4％质量浓度的NaOH溶液(在碱洗槽2)中清洗1min后，再用去离子水(碱洗槽2是多个槽子隔开且含水洗槽)清洗，在烘箱3中干燥即可；
耐腐蚀处理：将脱脂处理后的铝箔经过含三价铬钝化处理剂的槽中并采用微凹辊4对铝箔进行双面涂布，涂布量3g/m2，耐腐蚀层涂布后在烘箱5中200度烘烤20s；
(2)上述涂布后的铝箔经过胶槽6，胶槽6内含有水性树脂粘结剂，借助胶槽6对铝箔的亮面进行水性树脂粘结剂涂布，涂布量为3g/m2，涂布后在烘箱7中150℃烘烤20s；
(3)上述涂布后的铝箔与放卷辊9放卷的40μm厚的聚丙烯膜在复合辊8处复合热压复合，复合温度180-200℃，复合压力0.3-0.5Mpa，复合后的半成品经冷却辊10冷却(35℃)定形；
(4)上述处理后的半成品经过胶槽11，胶槽11内含有胶黏剂，借助胶槽11于铝箔的哑面处涂胶，涂布量4g/m2，经烘箱12干燥后，与放卷辊14放卷的15μm尼龙膜在复合辊13处采用80℃复合，经收卷辊15收卷；
(5)上述处理后的半成品经过胶槽16，胶槽16内含有胶黏剂，借助胶槽16于尼龙膜表面涂胶，涂布量4g/m2，经烘箱17干燥后，与放卷辊19放卷的8μmPET膜在复合辊18处采用80℃复合，经收卷辊20收卷，在干燥房中70℃固化6天，制得铝塑复合膜。
实施例3
一种铝塑复合膜的制备方法，该铝塑复合膜由外层至内层依次包括PET膜、尼龙膜、铝箔和聚丙烯膜，制备步骤包括：
(1)在铝箔的哑面和亮面均进行脱脂和耐腐蚀处理，
脱脂处理：放卷装置1将铝箔放卷经碱洗槽2进行脱脂，即将铝箔的哑面和亮面在4％质量浓度的NaOH溶液(在碱洗槽2)中清洗1min后，再用去离子水(碱洗槽2是多个槽子隔开且含水洗槽)清洗，在烘箱3中干燥即可；
耐腐蚀处理：将脱脂处理后的铝箔经过含三价铬钝化处理剂的槽中并采用微凹辊4对铝箔进行双面涂布，涂布量0.5g/m2，耐腐蚀层涂布后在烘箱5中200度烘烤20s；
(2)上述涂布后的铝箔经过胶槽6，胶槽6内含有油性树脂粘结剂，借助胶槽6对铝箔的亮面进行油性树脂粘结剂涂布，涂布量为3g/m2，涂布后在烘箱7中240℃烘烤60s；
(3)上述涂布后的铝箔与放卷辊9放卷的40μm厚的聚丙烯膜在复合辊8处复合热压复合，复合温度180-200℃，复合压力0.3-0.5Mpa，复合后的半成品经冷却辊10冷却(35℃)定形；
(4)上述处理后的半成品经过胶槽11，胶槽11内含有胶黏剂，借助胶槽11于铝箔的哑面处涂胶，涂布量4g/m2，经烘箱12干燥后，与放卷辊14放卷的15μm尼龙膜在复合辊13处采用80℃复合，经收卷辊15收卷；
(5)上述处理后的半成品经过胶槽16，胶槽16内含有胶黏剂，借助胶槽16于尼龙膜表面涂胶，涂布量4g/m2，经烘箱17干燥后，与放卷辊19放卷的8μmPET膜在复合辊18处采用80℃复合，经收卷辊20收卷，在干燥房中70℃固化6天，制得铝塑复合膜。
实施例4
一种铝塑复合膜的制备方法，该铝塑复合膜由外层至内层依次包括PET膜、尼龙膜、铝箔和聚丙烯膜，制备步骤包括：
(1)在铝箔的哑面和亮面均进行脱脂和耐腐蚀处理，
脱脂处理：放卷装置1将铝箔放卷经碱洗槽2进行脱脂，即将铝箔的哑面和亮面在4％质量浓度的NaOH溶液(在碱洗槽2)中清洗1min后，再用去离子水(碱洗槽2是多个槽子隔开且含水洗槽)清洗，在烘箱3中干燥即可；
耐腐蚀处理：将脱脂处理后的铝箔经过含三价铬钝化处理剂的槽中并采用微凹辊4对铝箔进行双面涂布，涂布量0.5g/m2，耐腐蚀层涂布后在烘箱5中200度烘烤20s；
(2)上述涂布后的铝箔经过胶槽6，胶槽6内含有油性树脂粘结剂，借助胶槽6对铝箔的亮面进行油性树脂粘结剂涂布，涂布量为3g/m2，涂布后在烘箱7中240℃烘烤180s；
(3)上述涂布后的铝箔与放卷辊9放卷的40μm厚的聚丙烯膜在复合辊8处复合热压复合，复合温度180-200℃，复合压力0.3-0.5Mpa，复合后的半成品经冷却辊10冷却(35℃)定形；
(4)上述处理后的半成品经过胶槽11，胶槽11内含有胶黏剂，借助胶槽11于铝箔的哑面处涂胶，涂布量4g/m2，经烘箱12干燥后，与放卷辊14放卷的15μm尼龙膜在复合辊13处采用80℃复合，经收卷辊15收卷；
(5)上述处理后的半成品经过胶槽16，胶槽16内含有胶黏剂，借助胶槽16于尼龙膜表面涂胶，涂布量4g/m2，经烘箱17干燥后，与放卷辊19放卷的8μmPET膜在复合辊18处采用80℃复合，经收卷辊20收卷，在干燥房中70℃固化6天，制得铝塑复合膜。
对比例1
一种铝塑复合膜的制备方法，该铝塑复合膜由外层至内层依次包括尼龙膜、铝箔和聚丙烯膜，制备步骤包括：
(1)在铝箔的哑面和亮面均进行脱脂和耐腐蚀处理，
脱脂处理：放卷装置1将铝箔放卷经碱洗槽2进行脱脂，即将铝箔的哑面和亮面在4％质量浓度的NaOH溶液(在碱洗槽2)中清洗1min后，再用去离子水(碱洗槽2是多个槽子隔开且含水洗槽)清洗，在烘箱3中干燥即可；
耐腐蚀处理：将脱脂处理后的铝箔经过含三价铬钝化处理剂的槽中并采用微凹辊4对铝箔进行双面涂布，涂布量0.5g/m2，耐腐蚀层涂布后在烘箱5中200度烘烤20s；
(2)上述涂布后的铝箔经过胶槽6，胶槽6内含有水性树脂粘结剂，借助胶槽6对铝箔的亮面进行水性树脂粘结剂涂布，涂布量为3g/m2，涂布后在烘箱7中150℃烘烤20s；
(3)上述涂布后的铝箔与放卷辊9放卷的40μm厚的聚丙烯膜在复合辊8处复合热压复合，复合温度180-200℃，复合压力0.3-0.5Mpa，复合后的半成品经冷却辊10冷却(35℃)定形；
(4)上述处理后的半成品经过胶槽11，胶槽11内含有胶黏剂，借助胶槽11于铝箔的哑面处涂胶，涂布量4g/m2，经烘箱12干燥后，与放卷辊14放卷的15μm尼龙膜在复合辊13处采用80℃复合，经收卷辊15收卷，制得铝塑复合膜。
对制得的铝塑复合膜进行耐电解液性能测试，测试结果见表1，测试方法如下：
电解液配制：将碳酸乙烯酯、碳酸二乙酯、碳酸二甲酯按照物质的量为1:1:1比例混合，再在混合液中加入六氟磷酸锂，配制成六氟磷酸锂物质的量为1.0mol/L的溶液，即为电解液，电解液的游离酸含量不高于百万分之五十。
将铝塑膜裁切为15mm*100mm的试样，并将样品放入装有电解液的容器中，电解液需完全浸没样品，容器密封后放入烘箱，在85℃烘箱中烘烤30天后，取出自然冷却至常温，逐条取出样品擦拭干净立即测试CPP与铝箔的剥离力，即为耐电解液性能。
将电解液盛入容器中并加入1％水搅拌均匀，将铝塑膜裁切为15mm*100mm的试样，把样品放入容器中，电解液需完全浸没样品，容器密封后放入烘箱，在85℃烘箱中烘烤1天后，取出自然冷却至常温，逐条取出样品擦拭干净立即测试CPP与铝箔的剥离力，即为耐电解液性能。
保护层耐电解液性能检测，取配制好的电解液，滴在保护层，在空气中放置2h后擦掉电解液后，比较保护层滴电解液位置与未滴电解液位置的膜面外观，有无腐蚀痕迹。
表1测试结果
Figure BDA0003279628340000091
从表1的数据可知，采用本申请的热法工艺生产的铝塑膜，内层耐电解液性能优异，保护层具有良好的耐电解液腐蚀性能。而对比例1中由于缺乏PET膜，保护层耐电解液性能较差。从实施例1和实施例2的数据来看，耐腐蚀层涂布量越高，对应的耐电解液性能越好。从实施例1和实施例3的数据来看，当粘结剂采用油性树脂粘结剂时，耐电解液性能更稳定。从实施例3和实施例4的数据来看，对于油性树脂而言，烘烤时间增加，能增加铝塑膜的耐电解液性能。
以上所揭露的仅为本发明的优选实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明申请专利范围所作的等同变化，仍属本发明所涵盖的范围。

Claims (10)

1.一种铝塑复合膜的制备方法，其特征在于，该铝塑复合膜由外层至内层依次包括PET膜、尼龙膜、铝箔和聚丙烯膜，制备步骤包括：
(1)对铝箔的哑面和亮面均进行脱脂和耐腐蚀处理，脱脂处理采用碱液进行，耐腐蚀处理采用含Cr3+钝化剂进行；
(2)在铝箔的亮面涂布粘结剂，借助粘结剂将铝箔和聚丙烯膜进行复合，粘结剂为树脂型粘结剂；
(3)在铝箔的哑面涂布胶黏剂，借助胶黏剂将铝箔和尼龙膜进行复合，胶黏剂为聚氨酯粘合剂；
(4)在尼龙膜表面涂布胶黏剂，借助胶黏剂将尼龙膜和PET膜进行复合，制得铝塑复合膜。
2.如权利要求1所述的铝塑复合膜的制备方法，其特征在于，所述粘结剂为水性树脂或油性树脂。
3.如权利要求1所述的铝塑复合膜的制备方法，其特征在于，脱脂处理依次包括碱洗、离子水清洗、干燥。
4.如权利要求1所述的铝塑复合膜的制备方法，其特征在于，耐腐蚀处理是将含Cr3+钝化剂涂布在铝箔双面，然后烘烤。
5.如权利要求4所述的铝塑复合膜的制备方法，其特征在于，含Cr3+钝化剂的涂布量为0.5-3.0g/m2，烘烤温度为120-220℃。
6.如权利要求1所述的铝塑复合膜的制备方法，其特征在于，步骤(2)中，将粘结剂涂布在铝箔的亮面后先进行干燥，再与聚丙烯膜进行复合，及冷却定型。
7.如权利要求6所述的铝塑复合膜的制备方法，其特征在于，粘结剂的涂布量为0.5-4.0g/m2，干燥温度大于90℃。
8.如权利要求1所述的铝塑复合膜的制备方法，其特征在于，步骤(3)中，铝箔和尼龙膜采用干式复合；
步骤(4)中，尼龙膜和PET膜采用干式复合。
9.如权利要求1所述的铝塑复合膜的制备方法，其特征在于，步骤(4)中，尼龙膜和PET膜复合后在50-85℃条件下固化2-7天。
10.一种铝塑复合膜，其特征在于，采用如权利要求1-9任一项所述的铝塑复合膜的制备方法制得。
CN202111132347.8A 2021-09-26 2021-09-26 一种铝塑复合膜及其制备方法 Pending CN113878963A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111132347.8A CN113878963A (zh) 2021-09-26 2021-09-26 一种铝塑复合膜及其制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111132347.8A CN113878963A (zh) 2021-09-26 2021-09-26 一种铝塑复合膜及其制备方法

Publications (1)

Publication Number Publication Date
CN113878963A true CN113878963A (zh) 2022-01-04

Family

ID=79006861

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111132347.8A Pending CN113878963A (zh) 2021-09-26 2021-09-26 一种铝塑复合膜及其制备方法

Country Status (1)

Country Link
CN (1) CN113878963A (zh)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114347616A (zh) * 2022-01-24 2022-04-15 珠海市赛纬电子材料股份有限公司 一种感温变色铝塑复合膜及其制备方法
CN114523740A (zh) * 2022-03-17 2022-05-24 珠海市赛纬电子材料股份有限公司 一种钢塑复合膜及其制备方法
CN114874714A (zh) * 2022-05-05 2022-08-09 深圳市摩范标签材料有限公司 铝箔卷材及其制备方法
CN114889248A (zh) * 2022-05-25 2022-08-12 江西省盛纬材料有限公司 一种锂电池软包装膜及其制备方法
CN115302883A (zh) * 2022-08-04 2022-11-08 江西省盛纬材料有限公司 一种铝塑复合膜及其制备方法
CN115302923A (zh) * 2022-10-12 2022-11-08 江苏益森新材料有限公司 一种薄膜牛皮纸复合装置
CN116082996A (zh) * 2023-02-03 2023-05-09 厦门大学 一种铝塑膜用粘结剂

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110216891A (zh) * 2019-06-03 2019-09-10 李佳昊 一种动力电池铝塑膜制备方法
CN110379948A (zh) * 2019-07-31 2019-10-25 上海紫江新材料科技股份有限公司 一种锂电池软包装膜的干法制备工艺
CN211165717U (zh) * 2019-05-16 2020-08-04 上海恩捷新材料科技有限公司 一种锂电池包装用铝塑复合膜

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN211165717U (zh) * 2019-05-16 2020-08-04 上海恩捷新材料科技有限公司 一种锂电池包装用铝塑复合膜
CN110216891A (zh) * 2019-06-03 2019-09-10 李佳昊 一种动力电池铝塑膜制备方法
CN110379948A (zh) * 2019-07-31 2019-10-25 上海紫江新材料科技股份有限公司 一种锂电池软包装膜的干法制备工艺

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114347616A (zh) * 2022-01-24 2022-04-15 珠海市赛纬电子材料股份有限公司 一种感温变色铝塑复合膜及其制备方法
CN114523740A (zh) * 2022-03-17 2022-05-24 珠海市赛纬电子材料股份有限公司 一种钢塑复合膜及其制备方法
CN114874714A (zh) * 2022-05-05 2022-08-09 深圳市摩范标签材料有限公司 铝箔卷材及其制备方法
CN114889248A (zh) * 2022-05-25 2022-08-12 江西省盛纬材料有限公司 一种锂电池软包装膜及其制备方法
CN114889248B (zh) * 2022-05-25 2024-04-09 江西省盛纬材料有限公司 一种锂电池软包装膜及其制备方法
CN115302883A (zh) * 2022-08-04 2022-11-08 江西省盛纬材料有限公司 一种铝塑复合膜及其制备方法
CN115302883B (zh) * 2022-08-04 2023-04-11 江西省盛纬材料有限公司 一种铝塑复合膜及其制备方法
WO2024027099A1 (zh) * 2022-08-04 2024-02-08 江西省盛纬材料有限公司 一种铝塑复合膜及其制备方法
CN115302923A (zh) * 2022-10-12 2022-11-08 江苏益森新材料有限公司 一种薄膜牛皮纸复合装置
CN116082996A (zh) * 2023-02-03 2023-05-09 厦门大学 一种铝塑膜用粘结剂

Similar Documents

Publication Publication Date Title
CN113878963A (zh) 一种铝塑复合膜及其制备方法
JP5289369B2 (ja) 水溶性高分子皮膜形成剤並びに水溶性高分子皮膜形成剤の製造方法並びにタブリード並びにタブリードの製造方法
CN109449319B (zh) 一种软包锂离子电池用铝塑膜
CN101781763B (zh) 一种铸铝合金薄膜涂层的制备方法
CN110379948B (zh) 一种锂电池软包装膜的干法制备工艺
CN106553403B (zh) 一种具有优异耐酸腐蚀性能的铝塑复合膜及其制备方法
CN110039793B (zh) 一种锂电池软包装膜的湿法制作工艺
CN104953051A (zh) 一种新型铝塑封装膜
CN112009067B (zh) 一种用于动力电池的复合铝塑膜的干法复合工艺
TWI597161B (zh) Metallic external material with resin film and its manufacturing method
TWI593826B (zh) Copper foil for lithium ion secondary battery negative electrode current collector
CN116001399A (zh) 一种耐腐蚀的铝塑复合膜及其制备方法
CN115322655B (zh) 一种容置锂电池电芯的环氧金属复合壳体、包括该复合壳体的锂电池及生产方法
CN105584151A (zh) 一种高阻隔高耐酸型铝塑膜及其制备方法
CN111171768A (zh) 一种应用于锂电池用铝塑膜的干法工艺的粘结剂的制备方法
CN111844952A (zh) 一种感温变色铝塑膜
CN112030149A (zh) 一种用于abs/pc塑料的镀铬工艺
CN106935784B (zh) 一种锂电池极耳表面处理方法
WO2024207688A1 (zh) 一种铝塑复合膜耐电解液性能的评价方法
JP2008251469A (ja) 濡れ性に優れた銅箔及びその製造方法
JP2007112871A (ja) ガスケット用素材
CN116005147A (zh) 一种铝箔的钝化方法和铝塑膜的钝化方法
CN110137389B (zh) 一种外层抗腐蚀的软包锂离子电池外壳封装用铝塑复合膜的制备方法
CN110749544A (zh) 一种锂电池铝塑膜内胶快速选择方法
CN110370780B (zh) 软包装膜的制备方法

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
RJ01 Rejection of invention patent application after publication

Application publication date: 20220104

RJ01 Rejection of invention patent application after publication