CN107739487A - 太阳能背板膜 - Google Patents

太阳能背板膜 Download PDF

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CN107739487A
CN107739487A CN201711065687.7A CN201711065687A CN107739487A CN 107739487 A CN107739487 A CN 107739487A CN 201711065687 A CN201711065687 A CN 201711065687A CN 107739487 A CN107739487 A CN 107739487A
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王哲
王仁华
张树彬
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JIANGSU RUNHUA MEMBRANE TECHNOLOGY Co Ltd
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Abstract

本发明公开了一种太阳能背板膜，包括上、下两个PVDF层以及两个PVDF层之间的PET层；PVDF层包括PVDF、PMMA、改性滑石粉和添加助剂。本发明绝缘、耐老化性能高，使用寿命长达30年，断裂强度(TD)高达120MPa以上，断裂伸长率(MD)高达150％以上。

Description

太阳能背板膜
技术领域
本发明涉及功能薄膜领域，具体涉及一种太阳能背板膜。
背景技术
随着全球能源的不断消耗以及日益严峻的环境问题，人们已经把关注的目光聚焦到了绿色能源和清洁能源。而太阳能是最重要的清洁和可再生能源，因此备受关注，其中，太阳能电池板是常用的设备。由于其常年在户外使用，因此需要采用太阳能背板对其进行保护。聚偏氟乙烯(PVDF)具有良好的化学稳定性、电绝缘性能，被广泛应用于制备太阳能背板。但如何进一步地提高太阳能背板膜的物理机械性能和化学稳定性，是本领域一直待解决的技术问题。
发明内容
本发明的发明目的是提供一种高强度、高韧性、化学稳定性极佳的太阳能背板膜。
为实现上述目的，本发明提供如下技术方案：
一种太阳能背板膜，包括上、下两个PVDF层以及两个PVDF层之间的PET层；其中，PVDF层由下列组分组成：
A组分：
PVDF 85-90重量份
PMMA 3-8重量份
颜料0.5-1重量份
改性滑石粉3-7重量份
增塑剂0-3重量份
B组分
二甲基丙烯酸1,4-丁二醇酯：对苯二酮：十二异戊烯醇单磷酸二铵盐＝(1-2.5)：(0.1-0.3)：(3-6)；
其中，以重量份计，A组分：B组分＝12.5:1。
优选地，所述改性滑石粉采用如下方法制备：取800-1500目的滑石粉分散在去离子水中，50-80℃下搅拌1.5-3小时，然后依次加入硅烷偶联剂和焦磷酸钠，硅烷偶联剂占滑石粉的比例为0.5-2.5wt％，焦磷酸钠占滑石粉的比例为1-3wt％；反应2-3h后用乙醇洗涤3-5次，过滤，真空干燥2-3h，研磨成粉末。
优选地，PVDF层由下列组分组成：
A组分：
PVDF 85-88重量份
PMMA 5-6重量份
颜料0.5-0.7重量份
改性滑石粉5-7重量份
增塑剂1-2重量份。
B组分
二甲基丙烯酸1,4-丁二醇酯：对苯二酮：十二异戊烯醇单磷酸二铵盐＝(1.5-2)：0.2：(5-5.5)。
优选地，所述PVDF层采用如下方法制备：将所有组分充分混合，形成干混料，再在150-170℃下，在双螺杆挤出机挤出造粒，制备得到母料，所得母粒加入至单螺杆挤出机中，采用流延法制备得到膜层，再经双辊冷却、牵引、卷取制得。
优选地，PVDF与PET层之间采用耐候性胶黏剂复合。
本发明的太阳能背板膜通过采用特定的配方，绝缘、耐老化性能高，使用寿命长达30年，特别是采用改性滑石粉和特定配比的添加助剂，使得太阳能背板膜的力学性能大幅提升，断裂强度(TD)高达120MPa以上，断裂伸长率(MD)高达150％以上。
具体实施方式
实施例1
一种太阳能背板膜，包括上、下两个PVDF层以及两个PVDF层之间的PET层；其中，PVDF层由下列组分组成：
PVDF 86重量份
PMMA 4重量份
颜料0.5重量份
改性滑石粉4重量份
B组分
二甲基丙烯酸1,4-丁二醇酯：对苯二酮：十二异戊烯醇单磷酸二铵盐＝1.5：0.15：4；
其中，以重量份计，A组分：B组分＝12.5:1。
所述改性滑石粉采用如下方法制备：取800目的滑石粉分散在去离子水中，60℃下搅拌2小时，然后依次加入硅烷偶联剂和焦磷酸钠，硅烷偶联剂占滑石粉的比例为0.75wt％，焦磷酸钠占滑石粉的比例为1.5wt％；反应2h后用乙醇洗涤3次，过滤，真空干燥2h，研磨成粉末。
所述PVDF层采用如下方法制备：将所有组分充分混合，形成干混料，再在160℃下，在双螺杆挤出机挤出造粒，制备得到母料，所得母粒加入至单螺杆挤出机中，采用流延法制备得到膜层，再经双辊冷却、牵引、卷取制得。然后两个PVDF层与PET层之间采用耐候性胶黏剂复合得到太阳能背板膜，其性能指标参见表1。
实施例2
一种太阳能背板膜，包括上、下两个PVDF层以及两个PVDF层之间的PET层；其中，PVDF层由下列组分组成：
A组分：
PVDF 87重量份
PMMA 5.5重量份
颜料0.5重量份
改性滑石粉6.5重量份
增塑剂1.5重量份。
B组分
二甲基丙烯酸1,4-丁二醇酯：对苯二酮：十二异戊烯醇单磷酸二铵盐＝1.9：0.2：5.2。
其中，以重量份计，A组分：B组分＝12.5:1。
所述改性滑石粉采用如下方法制备：取1200目的滑石粉分散在去离子水中，75℃下搅拌3小时，然后依次加入硅烷偶联剂和焦磷酸钠，硅烷偶联剂占滑石粉的比例为2wt％，焦磷酸钠占滑石粉的比例为2.5wt％；反应3h后用乙醇洗涤4次，过滤，真空干燥3h，研磨成粉末。太阳能背板膜的制备方法同实施例1，性能指标参见表1。
实施例3
一种太阳能背板膜，包括上、下两个PVDF层以及两个PVDF层之间的PET层；其中，PVDF层由下列组分组成：
A组分：
PVDF 88重量份
PMMA 5.2重量份
颜料0.6重量份
改性滑石粉6.8重量份
增塑剂1.1重量份。
B组分
二甲基丙烯酸1,4-丁二醇酯：对苯二酮：十二异戊烯醇单磷酸二铵盐＝2：0.2：5.3。
其中，以重量份计，A组分：B组分＝12.5:1。
所述改性滑石粉采用如下方法制备：取1250目的滑石粉分散在去离子水中，75℃下搅拌3小时，然后依次加入硅烷偶联剂和焦磷酸钠，硅烷偶联剂占滑石粉的比例为2.5wt％，焦磷酸钠占滑石粉的比例为3wt％；反应3h后用乙醇洗涤4次，过滤，真空干燥3h，研磨成粉末。太阳能背板膜的制备方法同实施例1，性能指标参见表1。
对比例1
一种太阳能背板膜，包括上、下两个PVDF层以及两个PVDF层之间的PET层；其中，PVDF层由下列组分组成：
PVDF 80重量份
PMMA 20重量份
阻燃剂1重量份
钛白粉12重量份
抗冲击改性剂10重量份；
太阳能背板膜的制备方法同实施例1，性能指标参见表1。
表1 检测结果

Claims (5)

1.一种太阳能背板膜，包括上、下两个PVDF层以及两个PVDF层之间的PET层；其特征在于，PVDF层由下列组分组成：
A组分：
PVDF 85-90重量份
PMMA 3-8重量份
颜料0.5-1重量份
改性滑石粉3-7重量份
增塑剂0-3重量份
B组分
二甲基丙烯酸1,4-丁二醇酯：对苯二酮：十二异戊烯醇单磷酸二铵盐＝(1-2.5)：(0.1-0.3)：(3-6)。
优选地，以重量份计，A组分：B组分＝12.5:1。
2.根据权利要求1所述的一种太阳能背板膜，其特征在于，所述改性滑石粉采用如下方法制备：取800-1500目的滑石粉分散在去离子水中，50-80℃下搅拌1.5-3小时，然后依次加入硅烷偶联剂和焦磷酸钠，硅烷偶联剂占滑石粉的比例为0.5-2.5wt％，焦磷酸钠占滑石粉的比例为1-3wt％；反应2-3h后用乙醇洗涤3-5次，过滤，真空干燥2-3h，研磨成粉末。
3.根据权利要求1所述的一种太阳能背板膜，其特征在于，PVDF层由下列组分组成：
A组分：
PVDF 85-88重量份
PMMA 5-6重量份
颜料0.5-0.7重量份
改性滑石粉5-7重量份
增塑剂1-2重量份。
B组分
二甲基丙烯酸1,4-丁二醇酯：对苯二酮：十二异戊烯醇单磷酸二铵盐＝(1.5-2)：0.2：(5-5.5)。
4.根据权利要求1所述的一种太阳能背板膜，其特征在于，所述PVDF层采用如下方法制备：将所有组分充分混合，形成干混料，再在150-170℃下，在双螺杆挤出机挤出造粒，制备得到母料，所得母粒加入至单螺杆挤出机中，采用流延法制备得到膜层，再经双辊冷却、牵引、卷取制得。
5.根据权利要求1所述的一种太阳能背板膜，其特征在于，PVDF与PET层之间采用耐候性胶黏剂复合。
CN201711065687.7A 2017-11-02 2017-11-02 太阳能背板膜 Pending CN107739487A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111186193A (zh) * 2019-12-31 2020-05-22 南京君弘新材料有限公司 一种高透光耐候性复合膜及其制备方法
CN112786724A (zh) * 2021-01-07 2021-05-11 浙江歌瑞新材料有限公司 一种高耐候性、低水汽透过率的透明光伏背板

Citations (2)

* Cited by examiner, † Cited by third party
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