CN103794657A - Pen单面涂层背板及其制备方法 - Google Patents

Pen单面涂层背板及其制备方法 Download PDF

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CN103794657A
CN103794657A CN201410028342.4A CN201410028342A CN103794657A CN 103794657 A CN103794657 A CN 103794657A CN 201410028342 A CN201410028342 A CN 201410028342A CN 103794657 A CN103794657 A CN 103794657A
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仲春
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SUZHOU XINGFU NEW ENERGY TECHNOLOGY Co Ltd
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Abstract

本发明公开了一种PEN单面涂层背板及其制备方法，所述PEN单面涂层背板包括：氟碳涂层、PEN材料层、聚氨酯干胶层和PE膜，所述PEN材料层的一侧通过聚氨酯干胶层与PE膜粘结在一起；所述PEN材料层的另一侧直接与所述氟碳涂层粘结；制备方法：将PEN材料层两个相对的侧面均进行处理，一面涂布氟碳涂层，另一个侧面涂布聚氨酯胶并进行烘烤；待胶层烘烤固化后，将PE膜热压复合于涂布聚氨酯干胶的PEN材料层的侧面上，得到PEN单面涂层背板。本发明的制备方法简便易行，将氟碳涂层直接涂布在PEN材料上，使加工更为方便，而且效率高、成本更低。所制备的PEN单面涂层背板使用PEN材料，大大提升了太阳能背板的抗水解能力和机械强度，可确保太阳能发电组件25年的使用寿命。

Description

PEN单面涂层背板及其制备方法
技术领域
本发明涉及太阳能电池技术领域，特别是涉及一种PEN单面涂层背板及其制备方法。
背景技术
太阳能绝缘背板一般是由五层结构组成，增强层和通过粘结层分别复合于增强层两面的外耐候层和内耐候层，增强层和两个耐候层之间通常是通过粘结剂连接。通常，外候层是厚度为25um的PVDF材料，中间加强层是厚度为250um的PET，内候层的厚度为50～60um，粘结层是厚度为10um的聚氨酯类胶。
目前太阳能背板存在以下重要问题：其一，在PVDF生产中，膜的本身难免会有气孔或者杂质造成水汽从PVDF的表面不良处侵入背板，而聚氨酯胶受到水汽侵扰后容易发生水解，从而进一步侵蚀背板中间的PET层，PET材料本身对水比较敏感容易发生水解，从而大大降低背板的使用寿命；其二，用聚氨酯类胶水制造复合型太阳能背板，成本相对较高。
发明内容
本发明主要解决的技术问题是提供一种PEN单面涂层背板及其制备方法，能够解决现有技术中因PET较低的耐水及水汽性能导致的绝缘背板水解破坏及增强层与外候层之间使用胶粘剂从而增加成本等问题。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种PEN单面涂层背板，包括：氟碳涂层、PEN材料层、聚氨酯干胶层和PE膜，所述PEN材料层的一侧通过聚氨酯干胶层与PE膜粘结在一起；所述PEN材料层的另一侧直接与所述氟碳涂层粘结。
在本发明一个较佳实施例中，所述氟碳涂层的厚度为20μm。
在本发明一个较佳实施例中，所述PEN材料层的厚度为250μm。
在本发明一个较佳实施例中，所述聚氨酯干胶层的厚度为10μm。
在本发明一个较佳实施例中，所述PE膜的厚度为50μm。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种PEN单面涂层背板的制备方法，制备方法为：将所述氟碳涂层直接涂布在经表面处理的所述PEN材料层的一个侧面上；接着将PEN材料层的另一个侧面进行表面处理，在处理后的表面涂布聚氨酯胶并进行烘烤；待胶层烘烤固化后，将PE膜热压复合于PEN材料层的另一侧面，得到PEN单面涂层背板。
本发明的有益效果是：本发明一种PEN单面涂层背板的制备方法简便易行，将氟碳涂层直接涂布在PEN材料上，不需要使用胶粘剂，使加工更为方便，而且效率高、成本更低。与现有技术相比，所制备的PEN单面涂层背板还具有如下优点：
1）PEN材料的耐热性、气体阻隔性、耐辐射能力、耐水性和耐水阻隔性较好，尤其是耐水性和耐水阻隔性，是PET的3.5～4倍，大大提升了太阳能背板的抗水解能力，可是太阳能绝缘背板不受潮湿的影响，特别适合高温高湿的地带使用的太阳能发电项目。
2）PEN材料还具有良好的化学稳定性、耐紫外线和物理性能，由其制备的太阳能绝缘背板可以防止紫外线的照射，且机械强度也大有提高，可确保太阳能发电组件25年的使用寿命。
3）外耐候层采用氟碳涂层，起到保护背板、阻挡紫外线和隔离水汽的作用。
附图说明
图1是本发明一种PEN单面涂层背板的剖面结构示意图；
图2是所示PEN单面涂层背板的制备过程流程图；
附图中各部件的标记如下：1.氟碳涂层，2.PEN材料层，3.聚氨酯干胶层，4.PE膜。
具体实施方式
下面结合附图对本发明的较佳实施例进行详细阐述，以使本发明的优点和特征能更易于被本领域技术人员理解，从而对本发明的保护范围做出更为清楚明确的界定。
请参阅图1和图2，本发明实施例包括：
一种PEN单面涂层背板，包括：氟碳涂层1、PEN（聚萘二甲酸乙二醇脂）材料层2、聚氨酯干胶层3和PE（聚乙烯）膜4，所述PEN材料层2的一侧通过聚氨酯干胶层3与PE膜4粘结在一起；所述PEN材料层2的另一侧直接与所述氟碳涂层1粘结。
实施例1
PEN单面涂层背板，结构为：
氟碳涂层：厚度为20μm，起到保护背板、阻挡紫外线和隔离水汽的作用；
PEN材料层：厚度为250μm，起到增强支撑的作用，同时可以防止紫外线的照射，具有耐高温、高气体屏蔽性等作用；
聚氨酯干胶层：厚度为10μm，将PEN材料层和PE膜牢固地粘结在一起；
PE膜：厚度为50μm，起到保护增强层的作用，同时可将绝缘背板与EVA泡沫材料粘结在一起。
制备方法为：将所述氟碳涂层直接涂布在经低温等离子表面处理的所述PEN材料层的一个侧面上；接着将PEN材料层的另一个侧面进行相同的低温等离子处理，在处理后的表面涂布聚氨酯胶并进行烘烤；待胶层烘烤固化后，将PE膜热压复合于PEN材料层的另一侧面，得到PEN单面涂层背板。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (6)

1.一种PEN单面涂层背板，其特征在于，包括：氟碳涂层、PEN材料层、聚氨酯干胶层和PE膜，所述PEN材料层的一侧通过聚氨酯干胶层与PE膜粘结在一起；所述PEN材料层的另一侧直接与所述氟碳涂层粘结。
2.根据权利要求1所述的PEN单面涂层背板，其特征在于，所述氟碳涂层的厚度为20μm。
3.根据权利要求1所述的PEN单面涂层背板，其特征在于，所述PEN材料层的厚度为250μm。
4.根据权利要求1所述的PEN单面涂层背板，其特征在于，所述聚氨酯干胶层的厚度为10μm。
5.根据权利要求1所述的PEN单面涂层背板，其特征在于，所述PE膜的厚度为50μm。
6.一种如权利要求1至5之一所述的PEN单面涂层背板的制备方法，其特征在于，制备方法为：将所述氟碳涂层直接涂布在经表面处理的所述PEN材料层的一个侧面上；接着将PEN材料层的另一个侧面进行表面处理，在处理后的表面涂布聚氨酯胶并进行烘烤；待胶层烘烤固化后，将PE膜热压复合于PEN材料层的另一侧面，得到PEN单面涂层背板。
CN201410028342.4A 2014-01-22 2014-01-22 Pen单面涂层背板及其制备方法 Expired - Fee Related CN103794657B (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102208465A (zh) * 2011-05-16 2011-10-05 杭州福斯特光伏材料股份有限公司 一种太阳能电池组件的封装材料
CN102738275A (zh) * 2011-04-12 2012-10-17 苏州尚善新材料科技有限公司 一种太阳能电池组件背板及其制备方法
CN203800058U (zh) * 2014-01-22 2014-08-27 苏州幸福新能源科技有限责任公司 Pen单面涂层背板

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102738275A (zh) * 2011-04-12 2012-10-17 苏州尚善新材料科技有限公司 一种太阳能电池组件背板及其制备方法
CN102208465A (zh) * 2011-05-16 2011-10-05 杭州福斯特光伏材料股份有限公司 一种太阳能电池组件的封装材料
CN203800058U (zh) * 2014-01-22 2014-08-27 苏州幸福新能源科技有限责任公司 Pen单面涂层背板

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