CN110010716B - 太阳能光伏电池组件背板 - Google Patents
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Abstract
本发明涉及太阳能技术领域,尤其涉及一种太阳能光伏电池组件背板。太阳能光伏电池组件背板包括从上到下依次由与大气接触的外层、第一粘接层、PET层、第二粘接层、高透绝缘层组成,这种太阳能光伏电池组件背板具有高阻隔性、通过加入热塑型树脂能实现先造粒,二次溶解造粒粒子后注塑,采用新的胶水配方,降低了生产成本,并且可以应用原有设备进行加工。
Description
技术领域
本发明涉及一种背板,尤其涉及一种太阳能光伏电池组件背板。
背景技术
太阳能电池组件由5层结构组成,光伏玻璃、高透明EVA,电池片、紫外高阻隔EVA、光伏背板;光伏背板作为组件背板的封装材料,主要发挥绝缘、水汽阻隔、增加反射等功效。
常规太阳能背板由多层材料复合而成,以市场上最常见的复合型KPE背板为例,其结构为三层,最外层(背板空气接触面)为PVDF,中间层PET,内层材料(EVA粘接层)为改性聚烯烃薄膜。由于背板内层材料与焊带及EVA直接接触,要求与EVA具有良好粘接性能,因此内层材料多为聚烯烃结构。目前国内外背板材料的制备方法,大都是在PET组隔膜的两个表面分别涂抹聚氨酯粘结剂,国内聚氨酯粘结剂都需要进口,使得太阳能背板的生产成本过高,由于聚氨酯粘结剂为溶剂型粘结剂,需要使用大量的有机溶剂,而这些有机溶剂会对环境造成一定的污染,并且对操作工人的健康也会产生不良影响。现有背板还存在透水率过高、阻隔性能差,黄变开裂老化失效的问题。
发明内容
本发明旨在解决上述缺陷,提供一种太阳能光伏电池组件背板。
为了克服背景技术中存在的缺陷,本发明解决其技术问题所采用的技术方案是:太阳能光伏电池组件背板包括从上到下依次由与大气接触的外层、第一粘接层、PET韧性增加层、第二粘接层、高透绝缘层组成;
所述与大气接触的外层由以下重量份组成:
环烯烃类共聚物 90~98份
热塑型树脂 0~10份
增塑剂 0~5份
紫外吸收剂 0.1~1份
所述的PET层由以下重量份组成:
聚苯乙烯 80~95份
工程塑料 0~15份
光稳定剂 1~5份
填充物 0.1~2份;
所述的高透绝缘层由以下重量份组成:
共聚聚乙烯 50~95份
硅烷接枝聚乙烯 30~80份
聚烯烃树脂 0~30份
功能性填料 2~5份
抗氧剂 0.1~2份。
根据本发明的另一个实施例,进一步包括所述第一粘接层由耐候稳定剂、丙烯酸树脂和交联催化剂交联而成的胶粘剂。
根据本发明的另一个实施例,进一步包括所述第二粘接层由马来酸酐接枝聚乙烯、丙烯酸树脂和交联催化剂交联而成的胶粘剂。
根据本发明的另一个实施例,进一步包括所述交联催化剂为六亚甲基二胺、乙二胺、聚乙烯亚胺、三亚乙基二胺、异佛尔酮二胺中的一种或多种。
根据本发明的另一个实施例,进一步包括所述与大气接触的外层中热塑性树脂为聚苯硫醚树脂、聚乙烯树脂或者聚丙烯树脂中的一种或多种。
根据本发明的另一个实施例,进一步包括所述与大气接触的外层中增塑剂为环氧大豆油和邻苯二酸二辛酯。
根据本发明的另一个实施例,进一步包括所述PET层中填充物为碳纤维、玻璃纤维或炭黑中的一种或多种。
根据本发明的另一个实施例,进一步包括所述高透绝缘层中的功能性填料为聚酰胺、甲基丙烯酸甲酯和结晶型聚酯多元醇。
根据本发明的另一个实施例,进一步包括所述的与大气接触的外层的紫外吸收剂为二苯甲酮类、苯并***类、三嗪类、取代丙烯腈类中的一种或多种。
本发明的有益效果是:这种太阳能光伏电池组件背板具有高阻隔性、通过加入热塑型树脂能实现先造粒,二次溶解造粒粒子后注塑,采用新的胶水配方,降低了生产成本,并且可以应用原有设备进行加工。
具体实施方式
太阳能光伏电池组件背板包括从上到下依次由与大气接触的外层、第一粘接层、PET层、第二粘接层、高透绝缘层组成;
所述与大气接触的外层由以下重量份组成:
环烯烃类共聚物 90~98份
热塑型树脂 0~10份
增塑剂 0~5份
紫外吸收剂 0.1~1份
所述的PET层由以下重量份组成:
聚苯乙烯 80~95份
工程塑料 0~15份
光稳定剂 1~5份
填充物 0.1~2份;
高透绝缘层由以下重量份组成:
共聚聚乙烯 50~95份
硅烷接枝聚乙烯 30~80份
聚烯烃树脂 0~30份
功能性填料 2~5份
抗氧剂 0.1~2份。
第一粘接层由耐候稳定剂、丙烯酸树脂和交联催化剂交联而成的胶粘剂。该结构制成的胶粘剂具备耐热、耐湿、耐久性的特点,长期使用不会发生降解,也不会导致层间分离和脱落的问题。
第二粘接层由马来酸酐接枝聚乙烯、丙烯酸树脂和交联催化剂交联而成的胶粘剂。该结构制成的胶粘剂具备耐热、耐湿、耐久性的特点,长期使用不会发生降解,也不会导致层间分离和脱落的问题。
交联催化剂为六亚甲基二胺、乙二胺、聚乙烯亚胺、三亚乙基二胺、异佛尔酮二胺中的一种或多种。
与大气接触的外层中热塑性树脂为聚苯硫醚树脂、聚乙烯树脂或者聚丙烯树脂中的一种或多种。热塑性树脂具有受热软化、冷却硬化的性能,而且不起化学反应,无论加热和冷却重复进行多少次,均能保持这种性能。故本工艺采用热塑性树脂,才能实现先造粒,二次溶解造粒粒子后注塑;同时可多次反复粉碎后加热重塑,实现回收再利用。
与大气接触的外层中增塑剂为环氧大豆油和邻苯二酸二辛酯。
PET层中填充物为碳纤维、玻璃纤维或炭黑中的一种或多种。碳纤维可以使PET层韧性增加,抗弯抗压强度高。
高透绝缘层中的功能性填料为聚酰胺、甲基丙烯酸甲酯和结晶型聚酯多元醇。
与大气接触的外层的紫外吸收剂为二苯甲酮类、苯并***类、三嗪类、取代丙烯腈类中的一种或多种。
实施例一
太阳能光伏电池组件背板包括从上到下依次由与大气接触的外层、第一粘接层、PET层、第二粘接层、高透绝缘层组成;
所述与大气接触的外层由以下重量份组成:
环烯烃类共聚物 92份
聚苯硫醚树脂 7份
环氧大豆油 3份
邻苯二酸二辛酯 1份
二苯甲酮类 0.5份
所述的PET层由以下重量份组成:
聚苯乙烯 85份
工程塑料 10份
光稳定剂 3份
碳纤维 0.8份;
高透绝缘层由以下重量份组成:
共聚聚乙烯 80份
硅烷接枝聚乙烯 55份
聚烯烃树脂 25份
甲基丙烯酸甲酯 2份
聚酰胺 1份
结晶型聚酯多元醇 1份
抗氧剂 1份。
三种物料按以上配方放入高混机中混合均匀,然后放入双螺杆挤出机中共混改性制得各自薄膜的原料,PE层薄膜、外层薄膜和高透绝缘层薄膜采用流延成型。PET层薄膜两面电晕涂布胶水后分别与外层和高透绝缘层进行复合制得所需背板。
实施例二
太阳能光伏电池组件背板包括从上到下依次由与大气接触的外层、第一粘接层、PET层、第二粘接层、高透绝缘层组成;
所述与大气接触的外层由以下重量份组成:
环烯烃类共聚物 92份
聚乙烯树脂 5份
环氧大豆油 2份
邻苯二酸二辛酯 2份
苯并***类 0.5份
所述的PET层由以下重量份组成:
聚苯乙烯 89份
工程塑料 12份
光稳定剂 4份
炭黑 2份;
高透绝缘层由以下重量份组成:
共聚聚乙烯 78份
硅烷接枝聚乙烯 68份
聚烯烃树脂 18份
聚酰胺 1份
甲基丙烯酸甲酯 2份
结晶型聚酯多元醇 2份
抗氧剂 1.3份。
三种物料按以上配方放入高混机中混合均匀,然后放入双螺杆挤出机中共混改性制得各自薄膜的原料,PET层薄膜、外层薄膜和高透绝缘层薄膜采用流延成型。PET层薄膜两面电晕涂布胶水后分别与外层和高透绝缘层进行复合制得所需背板。
实施例三
太阳能光伏电池组件背板包括从上到下依次由与大气接触的外层、第一粘接层、PET层、第二粘接层、高透绝缘层组成;
所述与大气接触的外层由以下重量份组成:
环烯烃类共聚物 92份
聚乙烯树脂 6份
环氧大豆油 1份
邻苯二酸二辛酯 2份
取代丙烯腈类 0.8份
所述的PET层由以下重量份组成:
聚苯乙烯 88份
工程塑料 10份
光稳定剂 4份
玻璃纤维 2份;
高透绝缘层由以下重量份组成:
共聚聚乙烯 90份
硅烷接枝聚乙烯 55份
聚烯烃树脂 18份
聚酰胺 1份
甲基丙烯酸甲酯 1份
结晶型聚酯多元醇 1份
抗氧剂 1.5份。
三种物料按以上配方放入高混机中混合均匀,然后放入双螺杆挤出机中共混改性制得各自薄膜的原料,PET层薄膜、外层薄膜和高透绝缘层薄膜采用流延成型。PET层薄膜两面电晕涂布胶水后分别与外层和高透绝缘层进行复合制得所需背板。
Claims (3)
1.一种太阳能光伏电池组件背板,其特征在于:从上到下依次由与大气接触的外层、第一粘接层、PET层、第二粘接层、高透绝缘层组成;
所述与大气接触的外层由以下重量份组成:
环烯烃类共聚物 90~98份
热塑型树脂 0~10份
增塑剂 0~5份
紫外吸收剂 0.1~1份
所述的PET层由以下重量份组成:
聚苯乙烯 80~95份
工程塑料 0~15份
光稳定剂 1~5份
填充物 0.1~2份;
所述的高透绝缘层由以下重量份组成:
共聚聚乙烯 50~95份
硅烷接枝聚乙烯 30~80份
聚烯烃树脂 0~30份
功能性填料 2~5份
抗氧剂 0.1~2份;
所述第一粘接层由耐候稳定剂、丙烯酸树脂和交联催化剂交联而成的胶粘剂;
所述第二粘接层由马来酸酐接枝聚乙烯、丙烯酸树脂和交联催化剂交联而成的胶粘剂,
所述与大气接触的外层中热塑性树脂为聚苯硫醚树脂、聚乙烯树脂或者聚丙烯树脂中的一种或多种,
所述与大气接触的外层中增塑剂为环氧大豆油和邻苯二酸二辛酯,
所述的与大气接触的外层的紫外吸收剂为二苯甲酮类、苯并***类、三嗪类、取代丙烯腈类中的一种或多种,
所述PET层中填充物为碳纤维、玻璃纤维或炭黑中的一种或多种。
2.如权利要求1所述的一种太阳能光伏电池组件背板,其特征在于:所述交联催化剂为六亚甲基二胺、乙二胺、聚乙烯亚胺、三亚乙基二胺、异佛尔酮二胺中的一种或多种。
3.如权利要求1所述的一种太阳能光伏电池组件背板,其特征在于:所述高透绝缘层中的功能性填料为聚酰胺、甲基丙烯酸甲酯和结晶型聚酯多元醇。
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