CN104022175A - 太阳能电池封装用的荧光含氟聚合物薄膜及其制备方法 - Google Patents

太阳能电池封装用的荧光含氟聚合物薄膜及其制备方法 Download PDF

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CN104022175A
CN104022175A CN201410279412.3A CN201410279412A CN104022175A CN 104022175 A CN104022175 A CN 104022175A CN 201410279412 A CN201410279412 A CN 201410279412A CN 104022175 A CN104022175 A CN 104022175A
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王同心
陈坤
刘晓娇
王强
蒋贤明
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Abstract

本发明所揭示的一种太阳能电池封装用的荧光含氟聚合物薄膜，向含氟聚合物中添加荧光转换物质，且所述荧光转换物质所占质量比为0.01~20%，所述荧光转换物质为有机荧光燃料，量子点，稀土配合物，无机荧光粉中的一种或多种的混合。本发明所揭示的一种太阳能电池封装用的荧光含氟聚合物薄膜，解决了荧光物质对材料所产生的劣化问题，同时含氟聚合物薄膜具有极佳的疏水性和耐候性，提高了荧光物质的稳定性和荧光效率。

Description

太阳能电池封装用的荧光含氟聚合物薄膜及其制备方法
技术领域
本发明涉及一种含氟聚合物薄膜，尤其涉及一种太阳能电池封装用的荧光含氟聚合物薄膜及其制备方法。
背景技术
太阳光光谱中360nm以下的短波长紫外光以及1200nm中的长波长部分对应硅太阳能电池的发电都是没有贡献的.同时短波长部分的光如紫外线会加速封装材料的老化和降解.通常的为了避免紫外光对光伏组件的危害,都采用了在封装材料EVA胶膜中添加紫外吸收剂的方法，将紫外光转化成热能耗散掉。然而这种方式会提高组件发电时的工作温度，降低了电池的发电效率。
      为了更好的利用紫外光，不少专利都涉及到将荧光转换物质添加到EVA胶膜中，将紫外光转换成能够被电池利用的可见光。这种方式可以提升组件的发电效率，同时降低组件工作时的温度。但是由于荧光物质自身的稳定性问题，在紫外线长期辐照下都会存在降解的问题。另外EVA胶膜本身也是不稳定的，非常容易发生水解，加入一些荧光物质后经常引起或加速EVA的黄变问题，因此具有波长转换功能的EVA胶膜至今只能停留在实验室中。
含氟聚合物膜具有优异的强度、耐候性、抗紫外线性、防潮、低介电常数和高击穿电压，并在晶体硅电池组件和薄膜组件中均能发挥作用。例如含氟聚合物膜(诸如乙烯一四氟乙烯共聚物(ETFE)膜)可取代常规的的玻璃层，作为光伏组件的前板。含氟聚合材料作为光伏组件前板的优势在于降低了组件的重量，同时氟膜由于不含钠离子，不像玻璃那样会引起光伏组件的电位诱发衰减效应，从而保障组件功率的长期稳定输出。
发明内容
本发明目的在于针对现有技术的不足，通过向含氟聚合物薄膜中添加荧光物质的方法，提供一种具有波长转换功能的荧光含氟聚合物薄膜，让紫外光可以被组件利用的同时避免了荧光物质对膜材料性质的劣化问题。
为达到上述目的，本发明所揭示的一种太阳能电池封装用的荧光含氟聚合物薄膜，向含氟聚合物中添加荧光转换物质，且所述荧光转换物质所占质量比为0.01~20%，所述荧光转换物质为有机荧光燃料，量子点，稀土配合物，无机荧光粉中的一种或多种的混合。
所述含氟聚合物为乙烯，丙烯，偏氟乙烯，四氟乙烯，含氟可聚合单体中的一种或多种共聚。
所述荧光含氟聚合物薄膜放置于电池片上方，作为光伏组件的前板。
4．一种太阳能电池封装用的荧光含氟聚合物薄膜的制备方法，包括如下步骤：
a．将荧光转换物质添加到含氟聚合物中，并在高速混炼机中将粉料混合均匀；
b．将步骤a中的混合物加入到双螺杆挤出机中，加热至190℃-230℃，熔融挤出，流延成薄膜；
c．在130℃-160℃下对步骤b中的薄膜进行回火处理3-10min，空气冷却至室温后，将薄膜收卷装箱。
所述步骤a中的含氟聚合物为乙烯，丙烯，偏氟乙烯，四氟乙烯，含氟可聚合单体中的一种或多种共聚而成。
所述步骤a中荧光转换物质为有机荧光燃料，量子点，稀土配合物，无机荧光粉中的一种或多种的混合。
本发明所揭示的一种太阳能电池封装用的荧光含氟聚合物薄膜，解决了荧光物质对材料所产生的劣化问题，同时含氟聚合物薄膜具有极佳的疏水性和耐候性，提高了荧光物质的稳定性和荧光效率；荧光薄膜作为光伏组件封装材料，对紫外光的转换作用提高了光伏组件的输出功率和组件的抗紫外老化性能，同时该薄膜可作为光伏组件前板使用,那么在转光的同时,也避免了传统光伏玻璃表面钠离子迁移所引起的电位诱发衰减效应，从而进一步提高光伏组件的使用寿命。
具体实施例
下面将对本发明的技术方案进行清楚、完整的描述。
具体实施例1
本发明所揭示的一种太阳能电池封装用的荧光含氟聚合物薄膜，应用于太阳能光伏行业，按重量份计其原料组分为： 100份乙烯-四氟乙烯共聚物粉末，0.5份金量子点，且金量子点尺寸为50 nm。
将上述材料预先在高速混炼机中混合均匀，然后加入到双螺杆挤出机中，加热至190 ℃，熔融挤出，流延成薄膜，在130 ℃下对薄膜进行回火处理3min，空气冷却至室温后，将薄膜收卷装箱。
具体实施例2
本发明所揭示的一种太阳能电池封装用的荧光含氟聚合物薄膜，应用于太阳能光伏行业，按重量份计其原料组分为：100份乙烯-四氟乙烯共聚物粉末，0.01份荧光增白剂KCN。
将上述材料预先在高速混炼机中混合均匀，然后加入到双螺杆挤出机中，加热至215 ℃，熔融挤出，流延成薄膜，在145 ℃下对薄膜进行回火处理7min，空气冷却至室温后，将薄膜收卷装箱。
具体实施例3
本发明所揭示的一种太阳能电池封装用的荧光含氟聚合物薄膜，应用于太阳能光伏行业，按重量份计其原料组分为：100份聚全氟乙丙烯（FEP）粉末，0.5份稀土金属配合物EuTP。
将上述材料预先在高速混炼机中将粉料混合均匀，然后加入到双螺杆挤出机中，加热至230 ℃，熔融挤出，流延成薄膜，在160 ℃下对薄膜进行回火处理10min，空气冷却至室温后，将薄膜收卷装箱。
上述三个实施例中配比完成的成品，其参数对比如表1所示：
表1 材料紫外老化后性能对比
项目 现有技术 实施例1 实施例2 实施例3
薄膜厚度 0.45mm 0.15mm 0.15mm 0.15mm
透光率 91% ≥98% ≥98% ≥97%
黄变值 ＞5 ＜1 ＜1 ＜1
紫外老化测试条件为在紫外老化实验箱中，15KWh的紫外光辐照3000h，可以看出荧光含氟聚合物薄膜具有良好的抗紫外老化性质。
本发明的技术内容及技术特征已揭示如上，然而熟悉本领域的技术人员仍可能基于本发明的揭示而作种种不背离本发明精神的替换及修饰，因此，本发明保护范围应不限于实施例所揭示的内容，而应包括各种不背离本发明的替换及修饰，并为本专利申请权利要求所涵盖。

Claims (6)

1. 一种太阳能电池封装用的荧光含氟聚合物薄膜，其特征在于：向含氟聚合物中添加荧光转换物质，且所述荧光转换物质所占质量比为0.01~20%，所述荧光转换物质为有机荧光燃料，量子点，稀土配合物，无机荧光粉中的一种或多种的混合。
2. 根据权利要求1所述的太阳能电池封装用的荧光含氟聚合物薄膜，其特征在于：所述含氟聚合物为乙烯，丙烯，偏氟乙烯，四氟乙烯，含氟可聚合单体中的一种或多种共聚而成。
3. 根据权利要求1所述的太阳能电池封装用的荧光含氟聚合物薄膜，其特征在于：所述荧光含氟聚合物薄膜放置于电池片上方，作为光伏组件的前板使用。
4. 一种太阳能电池封装用的荧光含氟聚合物薄膜的制备方法，其特征在于包括如下步骤：
a．将荧光转换物质添加到含氟聚合物中，并在高速混炼机中将粉料混合均匀；
b．将步骤a中的混合物加入到双螺杆挤出机中，加热至190℃-230℃，熔融挤出，流延成薄膜；
c．在130℃-160℃下对步骤b中的薄膜进行回火处理3-10min，空气冷却至室温后，将薄膜收卷装箱。
5. 根据权利要求4所述的太阳能电池封装用的荧光含氟聚合物薄膜的制备方法，其特征在于：所述步骤a中的含氟聚合物为乙烯，丙烯，偏氟乙烯，四氟乙烯，含氟可聚合单体中的一种或多种共聚而成。
6. 根据权利要求4所述的太阳能电池封装用的荧光含氟聚合物薄膜的制备方法，其特征在于：所述步骤a中荧光转换物质为有机荧光燃料，量子点，稀土配合物，无机荧光粉中的一种或多种的混合。
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* Cited by examiner, † Cited by third party
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WO2016198496A1 (en) * 2015-06-09 2016-12-15 Solvay Specialty Polymers Italy S.P.A. A composition including a luminescent compound
CN107364104A (zh) * 2017-07-14 2017-11-21 成都新柯力化工科技有限公司 一种热塑成型制备led薄膜材料的方法
CN114672113A (zh) * 2021-12-28 2022-06-28 江苏双星彩塑新材料股份有限公司 一种无氟太阳能电池背板用聚酯薄膜及其制备方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016198496A1 (en) * 2015-06-09 2016-12-15 Solvay Specialty Polymers Italy S.P.A. A composition including a luminescent compound
CN107364104A (zh) * 2017-07-14 2017-11-21 成都新柯力化工科技有限公司 一种热塑成型制备led薄膜材料的方法
CN114672113A (zh) * 2021-12-28 2022-06-28 江苏双星彩塑新材料股份有限公司 一种无氟太阳能电池背板用聚酯薄膜及其制备方法

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