CN112786724A - 一种高耐候性、低水汽透过率的透明光伏背板 - Google Patents
一种高耐候性、低水汽透过率的透明光伏背板 Download PDFInfo
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Abstract
一种高耐候性、低水汽透过率的透明光伏背板,包括PET中间主体板面,所述PET中间主体板面的表面通过粘合层复合有氟膜,氟膜包括PVDF氟膜基膜,在经过表面处理后的透明PVDF氟膜基膜表面涂布紫外截止涂料,然后在PET中间主体板面表面涂布粘合层,然后将涂布有紫外截止涂料的PVDF氟膜基膜与所述PET中间主体板面粘合,同时熟化静置,通过熟化分切后得到透明光伏背板成品。与现有技术相比,本发明使用PVDF氟膜复合PET中间主体板面制成的聚合物背板能够较好的满足耐候、低水汽透过率等光伏封装材料要求,通过利用紫外截止涂层和水蒸汽屏蔽涂层的组合使用在氟膜内表面和PET外表面形成功能性保护层。该聚合物背板不仅透光率较好,而且便于回收,并且能够减轻组件重量。
Description
技术领域
本发明涉及光伏材料技术领域,特别涉及一种高耐候性、低水汽透过率的透明光伏背板。
背景技术
太阳能光伏背板是利用太阳电池半导体材料的光伏效应,将太阳光辐射能直接转换为电能的一种新型发电系统,有独立运行和并网运行两种方式。独立运行的光伏发电系统需要有蓄电池作为储能装置,主要用于无电网的边远地区和人口分散地区,整个系统造价很高;在有公共电网的地区,光伏发电系统与电网连接并网运行,省去蓄电池,不仅可以大幅度降低造价,而且具有更高的发电效率和更好的环保性能。
目前,市面上光伏玻璃作为光伏组件的背面分装材料主要存在问题是:爆裂率高、重量大、产生的醋酸不易排出,容易产生PID现象等,不仅影响太阳能光伏装置的发电效率,也使光伏装置的使用寿命大幅降低。
发明内容
针对现有技术存在以上缺陷,本发明提供一种高耐候性、低水汽透过率的透明光伏背板如下:
本发明的技术方案是这样实现的:
一种高耐候性、低水汽透过率的透明光伏背板,包括PET中间主体板面,所述PET中间主体板面的表面通过粘合层复合有高耐候性、低水汽透过率氟膜,所述高耐候性、低水汽透过率氟膜包括PVDF氟膜基膜,所述透明光伏背板的制造工艺包括:在经过表面处理后的透明PVDF氟膜基膜表面涂布HALSHYBRID UV-G Series的紫外截止涂料,然后在PET中间主体板面表面涂布粘合层,然后将涂布有紫外截止涂料的PVDF氟膜基膜与所述PET中间主体板面粘合,同时熟化静置,通过熟化分切后得到透明光伏背板成品。
优选地,所述PVDF氟膜基膜的表面还涂布有PVDC阻隔涂料。
优选地,所述粘合层包括双组分聚氨酯胶水、无溶剂性的热熔胶或者水溶性的丙烯酸酯胶水。
优选地,所述PVDF氟膜基膜厚度为15-25μm,熟化静置时间为20-30分钟。
优选地,PET中间主体板面的上下表面均涂布有粘合层,然后将涂布有紫外截止涂料的PVDF氟膜基膜内表面和所述PET中间主体板面的上下表面分别层压贴合,同时熟化静置,通过熟化分切后得到透明光伏背板成品。
优选地,PET中间主体板面的上下表面均涂布有粘合层,然后将涂布有紫外截止涂料的PVDF氟膜基膜内表面和所述PET中间主体板面的上表面层压贴合,将涂布有PVDC阻隔涂料的PVDF氟膜基膜内表面和所述PET中间主体板面的下表面层压贴合,同时熟化静置,通过熟化分切后得到透明光伏背板成品。
优选地,PET中间主体板面的上下表面均涂布有粘合层,然后将涂布有紫外截止涂料的PVDF氟膜基膜内表面和所述PET中间主体板面的下表面层压贴合,将涂布有PVDC阻隔涂料的PVDF氟膜基膜内表面和所述PET中间主体板面的上表面层压贴合,同时熟化静置,通过熟化分切后得到透明光伏背板成品。
与现有技术相比,本发明有以下有益效果:
本发明的高耐候性、低水汽透过率的透明光伏背板使用高分子材料PVDF氟膜(涂布有紫外截止涂料以及PVDC阻隔涂料)复合PET中间主体板面制成的聚合物背板能够较好的满足耐候、低水汽透过率等光伏封装材料要求,通过利用紫外截止涂层和水蒸汽屏蔽涂层的组合使用在氟膜内表面和PET外表面形成功能性保护层,大大增强透明背板的耐候性的同时降低水蒸汽的透过率。该聚合物背板不仅透光率较好,而且便于回收,并且能够减轻组件重量,应用在光伏发电装置上不仅可以提高发电效率,也大大的提高了装置的使用年限。
附图说明
图1是本发明的高耐候性、低水汽透过率的透明光伏背板结构示意图。
图中:PET中间主体板面100,高耐候性、低水汽透过率氟膜200,粘合层300。
具体实施方式
下面将结合本发明实施例中的附图,对本发明进行清楚、完整地描述。
如图1所示,本发明提供一种技术方案:一种高耐候性、低水汽透过率的透明光伏背板,包括PET中间主体板面100,所述PET中间主体板面100的表面通过粘合层300复合有高耐候性、低水汽透过率氟膜200,所述高耐候性、低水汽透过率氟膜200包括PVDF氟膜基膜,所述透明光伏背板的制造工艺包括:在经过表面处理后的透明PVDF氟膜基膜表面涂布HALSHYBRID UV-G Series的紫外截止涂料,然后在PET中间主体板面100表面涂布粘合层,然后将涂布有紫外截止涂料的PVDF氟膜基膜与所述PET中间主体板面粘合,同时熟化静置,通过熟化分切后得到透明光伏背板成品。
所述PVDF氟膜基膜的表面还涂布有PVDC阻隔涂料,由于PVDF氟膜基膜本身具有水汽阻隔特性,所以PVDC阻隔涂料可以选择涂布。
所述粘合层300包括双组分聚氨酯胶水、无溶剂性的热熔胶或者水溶性的丙烯酸酯胶水。
所述PVDF氟膜基膜厚度为15-25μm,熟化静置时间为20-30分钟,本实施例可选择PVDF氟膜基膜厚度为20μm,熟化静置时间为25分钟,该种参数设置使得制备的复合背板外观比较平整。
实施例一
将20μm的PET中间主体板面100的上下表面均涂布有粘合层300,然后将涂布有紫外截止涂料的PVDF氟膜基膜内表面和所述PET中间主体板面100的上下表面分别层压贴合,同时熟化静置25分钟,通过熟化分切后得到透明光伏背板成品。
实施例二
将20μm的PET中间主体板面100的上下表面均涂布有粘合层,然后将涂布有紫外截止涂料的PVDF氟膜基膜内表面和所述PET中间主体板面的上表面层压贴合,将涂布有PVDC阻隔涂料的PVDF氟膜基膜内表面和所述PET中间主体板面的下表面层压贴合,同时熟化静置25分钟,通过熟化分切后得到透明光伏背板成品。
实施例三
将20μm的PET中间主体板面的上下表面均涂布有粘合层,然后将涂布有紫外截止涂料的PVDF氟膜基膜内表面和所述PET中间主体板面的下表面层压贴合,将涂布有PVDC阻隔涂料的PVDF氟膜基膜内表面和所述PET中间主体板面的上表面层压贴合,同时熟化静置25分钟,,通过熟化分切后得到透明光伏背板成品。
实施例四
将20μm的透明PVDF氟膜基膜的经过处理的内表面涂布PVDC的阻隔性涂料,然后在共挤型改性PET上下表面涂布丙烯酸酯的涂层剂,然后将涂布有PVDC阻隔涂料的PVDF膜内表面和上述PET片材的上表面分别层压贴合,同时熟化静置,所获得的透明材料可以作为透明背板使用。
上述实施例中,使用双面电晕后卷状氟膜(20μm~30μm)在双面电晕后的卷状PET材料上进行层压复合,然后通过熟化分切后得到成品。通常在PET的上下表面各复合一层氟膜。在氟膜和PET之间通常使用耐候型的双组分聚氨酯胶水,也有使用无溶剂性的热熔胶或者水溶性的丙烯酸酯胶水。
综合本发明的制备方法以及所用制备材料可知,本发明的高耐候性、低水汽透过率的透明光伏背板使用高分子材料PVDF氟膜(涂布有紫外截止涂料以及PVDC阻隔涂料)复合PET中间主体板面制成的聚合物背板能够较好的满足耐候、低水汽透过率等光伏封装材料要求,通过利用紫外截止涂层和水蒸汽屏蔽涂层的组合使用在氟膜内表面和PET外表面形成功能性保护层,大大增强透明背板的耐候性的同时降低水蒸汽的透过率。该聚合物背板不仅透光率较好,而且便于回收,并且能够减轻组件重量,应用在光伏发电装置上不仅可以提高发电效率,也大大的提高了装置的使用年限。
Claims (7)
1.一种高耐候性、低水汽透过率的透明光伏背板,其特征在于,包括PET中间主体板面,所述PET中间主体板面的表面通过粘合层复合有高耐候性、低水汽透过率氟膜,所述高耐候性、低水汽透过率氟膜包括PVDF氟膜基膜,所述透明光伏背板的制造工艺包括:在经过表面处理后的透明PVDF氟膜基膜表面涂布HALSHYBRID UV-G Series的紫外截止涂料,然后在PET中间主体板面表面涂布粘合层,然后将涂布有紫外截止涂料的PVDF氟膜基膜与所述PET中间主体板面粘合,同时熟化静置,通过熟化分切后得到透明光伏背板成品。
2.如权利要求1所述的高耐候性、低水汽透过率的透明光伏背板,其特征在于,所述PVDF氟膜基膜的表面还涂布有PVDC阻隔涂料。
3.如权利要求1所述的高耐候性、低水汽透过率的透明光伏背板,其特征在于,所述粘合层包括双组分聚氨酯胶水、无溶剂性的热熔胶或者水溶性的丙烯酸酯胶水。
4.如权利要求1或2所述的高耐候性、低水汽透过率的透明光伏背板,其特征在于,所述PVDF氟膜基膜厚度为15-25μm,熟化静置时间为20-30分钟。
5.如权利要求2所述的高耐候性、低水汽透过率的透明光伏背板,其特征在于,PET中间主体板面的上下表面均涂布有粘合层,然后将涂布有紫外截止涂料的PVDF氟膜基膜内表面和所述PET中间主体板面的上下表面分别层压贴合,同时熟化静置,通过熟化分切后得到透明光伏背板成品。
6.如权利要求2所述的高耐候性、低水汽透过率的透明光伏背板,其特征在于,PET中间主体板面的上下表面均涂布有粘合层,然后将涂布有紫外截止涂料的PVDF氟膜基膜内表面和所述PET中间主体板面的上表面层压贴合,将涂布有PVDC阻隔涂料的PVDF氟膜基膜内表面和所述PET中间主体板面的下表面层压贴合,同时熟化静置,通过熟化分切后得到透明光伏背板成品。
7.如权利要求2所述的高耐候性、低水汽透过率的透明光伏背板,其特征在于,PET中间主体板面的上下表面均涂布有粘合层,然后将涂布有紫外截止涂料的PVDF氟膜基膜内表面和所述PET中间主体板面的下表面层压贴合,将涂布有PVDC阻隔涂料的PVDF氟膜基膜内表面和所述PET中间主体板面的上表面层压贴合,同时熟化静置,通过熟化分切后得到透明光伏背板成品。
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