CN108099315A - 铝塑复合膜及其制备方法 - Google Patents

铝塑复合膜及其制备方法 Download PDF

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CN108099315A
CN108099315A CN201711258082.XA CN201711258082A CN108099315A CN 108099315 A CN108099315 A CN 108099315A CN 201711258082 A CN201711258082 A CN 201711258082A CN 108099315 A CN108099315 A CN 108099315A
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layer
aluminum
plastic composite
composite membrane
nylon
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赵铭航
李洪文
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Zhejiang Kai Jie New Materials Co Ltd
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    • 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
    • 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
    • B32B15/04—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
    • B32B15/088—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 polyamides
    • 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
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • 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 of a single cell or a single battery
    • H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/124—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure
    • 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
    • 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

Abstract

本发明提供了一种铝塑复合膜，包括依次组成的尼龙层、粘合剂层、铝合金层、粘合剂层和聚丙烯层，所述铝合金层为镀有含Cr的合金薄层，该铝塑复合膜具有不易被腐蚀的特点。本发明还提供了铝塑复合膜的制备方法，本发明的制备方法具有环保节能的特点。

Description

铝塑复合膜及其制备方法
技术领域
本发明属于复合膜材料领域，特别涉及一种铝塑复合膜及其制备方法。
背景技术
现有锂电池内部包括依次组成的尼龙PA、铝AL和聚丙烯（CPP）组成，然而，铝箔（AL）很容易被从外部扩散进来的水蒸气或从聚丙烯（CPP）层渗透过来的微量电解液腐蚀，铝箔表面被腐蚀后，可使其丧失阻隔性，同时容易与被粘合的聚丙烯（CPP）以及尼龙薄膜开裂。所以目前的生产过程中，首先要对铝箔进行保护处理，要么采用含Cr离子的液体进行表面处理，或者对铝箔表面进行涂层，此过程工序复杂，更重要的是处理液和涂料都是含铬有毒液体。
发明内容
本发明提供了一种防止铝腐蚀和开裂的铝塑复合膜。本发明通过在铝合金层为镀含Cr的合金薄层，取代使用有毒液体进行表面处理或涂布工艺过程，从而达到保护铝合金层不被腐蚀的目的，本发明的具体方案如下：
一种铝塑复合膜，包括依次组成的尼龙层、粘合剂层、铝合金层、粘合剂层和聚丙烯层；
所述铝合金层包括镀有含Cr的合金薄层。
优选地，
所述铝合金层包括铝箔层和覆盖在铝箔层上下面上的含Cr的合金薄层。
所述含Cr的合金薄层厚度为5-100纳米。
所述含Cr的合金薄层中的Cr为Cr金属或含Cr金属化合物。
所述Cr金属或其化合物占含Cr的合金薄层总量的2-30%。
一种铝塑复合膜的制备方法，包括以下步骤：
第一步，在尼龙薄膜上涂敷粘合剂并烘干。
第二步，同时或事先将铝箔清洗干净，然后在铝的表面镀含有铬金属或其化合物的薄膜。
第三步，当涂有粘合剂的尼龙薄膜从烘箱出来并稍加冷却后与镀膜后的铝箔进行压合。
第四步，在尼龙铝箔复合膜的铝侧涂敷粘合剂并烘干。
第五步，当涂有粘合剂的尼龙铝箔复合膜从烘箱出来并稍加冷却后与聚丙烯（CPP）进行压合。
第六步，将复合好的尼龙/铝箔/聚丙烯（CPP）复合膜放入恒温的熟化室内进行熟化。
本发明的制备方法具有环保节能的特点。
以下通过附图说明和具体实施方式对本发明做进一步阐述。
附图说明
图1为本发明的结构示意图。
标号说明
尼龙层1，粘合剂层2，Cr的合金薄层3a, 铝箔层3，Cr的合金薄层3b, 粘合剂层4，聚丙烯层5。
具体实施方式
一种铝塑复合膜（如图1所示），包括依次组成的尼龙层1，粘合剂层2，铝层, 粘合剂层4，聚丙烯层5。，所述铝合金层包括含Cr合金层薄层3a、铝箔层3和含Cr合金层薄层3b。
所述铝箔层3上下表面镀有含Cr（金属或化合物）的合金薄层3a和3b。
所述镀含Cr金属或化合物的薄层厚度为5-100纳米。
所述镀含Cr金属或化合物的薄层中Cr金属或化合物占合金总量的2-30%，
一种铝塑复合膜的制备方法，包括以下步骤：
第一步，在尼龙薄膜上涂敷粘合剂并烘干。尼龙薄膜形成所述的尼龙层1，粘合剂形成粘合剂层2。
第二步，同时或事先将铝箔清洗干净，然后在铝箔的上下表面镀含有铬金属或其化合物的薄膜。从而形成铝箔层3和覆盖在铝箔层3上下表面的含Cr合金层薄层3a和含Cr合金层薄层3b。
第三步，将步骤一中的涂有粘合剂的尼龙薄膜从烘箱取出并稍加冷却后与步骤二中镀膜后的铝箔进行压合，形成尼龙铝箔复合膜。
第四步，将步骤三中的尼龙铝箔复合膜上涂敷粘合剂并烘干，所述粘合剂形成粘合剂层4。
第五步，当步骤四种的涂有粘合剂的尼龙铝箔复合膜从烘箱出来并稍加冷却后与聚丙烯（CPP）进行压合，形成聚丙烯层5.
第六步，将复合好的尼龙/铝箔/聚丙烯（CPP）复合膜放入恒温的熟化室内进行熟化。
以上实施例仅用以说明本发明的技术方案而非限制，本领域普通技术人员对本发明的技术方案所做的其他修改或者等同替换，只要不脱离本发明技术方案的精神和范围，均应涵盖在本发明的权利要求范围中。

Claims (6)

1.一种铝塑复合膜，其特征在于：包括依次组成的尼龙层、粘合剂层、铝合金层、粘合剂层和聚丙烯层；所述铝合金层包括镀有含Cr的合金薄层。
2.根据权利要求1所述的一种铝塑复合膜，其特征在于：所述铝合金层包括铝箔层和覆盖在铝箔层上下面上的含Cr的合金薄层。
3.根据权利要求2所述的一种铝塑复合膜，其特征在于：所述含Cr的合金薄层厚度为5-100纳米。
4.根据权利要求1所述的一种铝塑复合膜，其特征在于：所述含Cr的合金薄层中的Cr为Cr金属或含Cr金属化合物。
5.根据权利要求4所述的一种铝塑复合膜，其特征在于：所述Cr金属或其化合物占含Cr的合金薄层总量的2-30%。
6.根据权利要求1所述的一种铝塑复合膜的制备方法，其特征在于：包括以下步骤：
第一步，在尼龙薄膜上涂敷粘合剂并烘干；
第二步，同时或事先将铝箔清洗干净，然后在铝的表面镀含有铬金属或其化合物的薄膜；
第三步，当涂有粘合剂的尼龙薄膜从烘箱出来并稍加冷却后与镀膜后的铝箔进行压合；
第四步，在尼龙铝箔复合膜的铝侧涂敷粘合剂并烘干；
第五步，当涂有粘合剂的尼龙铝箔复合膜从烘箱出来并冷却后与聚丙烯进行压合；
第六步，将复合好的尼龙/铝箔/聚丙烯复合膜放入恒温的熟化室内进行熟化。
CN201711258082.XA 2017-12-04 2017-12-04 铝塑复合膜及其制备方法 Pending CN108099315A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110712402A (zh) * 2019-10-15 2020-01-21 界首市天鸿新材料股份有限公司 一种具有抗氧化及高延展性能的铝塑复合膜及其制备方法
CN112259842A (zh) * 2020-10-30 2021-01-22 浙江锂盾新能源材料有限公司 一种具备泄压功能的硬壳电池防爆外壳及其制备方法

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Publication number Priority date Publication date Assignee Title
CN101495305A (zh) * 2006-07-24 2009-07-29 艾尔坎技术及管理有限公司 塑料复合膜
CN103633264A (zh) * 2013-11-25 2014-03-12 昆山永翔光电科技有限公司 一种锂电池软包装用铝塑膜及制作方法
CN206154819U (zh) * 2016-08-22 2017-05-10 无锡华盈锂能新材有限公司 锂离子电池软包装用铝塑复合膜
CN107425147A (zh) * 2016-07-28 2017-12-01 南亚塑胶工业股份有限公司 一种用于锂电池的铝塑膜的包装材料

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101495305A (zh) * 2006-07-24 2009-07-29 艾尔坎技术及管理有限公司 塑料复合膜
CN103633264A (zh) * 2013-11-25 2014-03-12 昆山永翔光电科技有限公司 一种锂电池软包装用铝塑膜及制作方法
CN107425147A (zh) * 2016-07-28 2017-12-01 南亚塑胶工业股份有限公司 一种用于锂电池的铝塑膜的包装材料
CN206154819U (zh) * 2016-08-22 2017-05-10 无锡华盈锂能新材有限公司 锂离子电池软包装用铝塑复合膜

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110712402A (zh) * 2019-10-15 2020-01-21 界首市天鸿新材料股份有限公司 一种具有抗氧化及高延展性能的铝塑复合膜及其制备方法
CN112259842A (zh) * 2020-10-30 2021-01-22 浙江锂盾新能源材料有限公司 一种具备泄压功能的硬壳电池防爆外壳及其制备方法

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