CN111816723B - 一种光伏组件用载体膜及光伏组件 - Google Patents
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Abstract
本发明涉及一种光伏组件用载体膜及光伏组件,该载体膜包括粘结层和支撑层,所述的粘结层的原料配方包括第一主体树脂,所述的支撑层的原料配方包括第二主体树脂,其中,所述的第一主体树脂为聚乙烯、聚烯烃弹性体、乙烯‑醋酸乙烯共聚物、乙烯‑丙烯酸共聚物、乙烯‑丙烯酯共聚物、尼龙、离子键聚合体中的一种或者多种组成;所述的第二主体树脂为聚乙烯、尼龙、尼龙聚烯烃接枝共聚物、乙烯‑丙烯共聚物、聚偏氟乙烯、聚偏二氟乙烯、硅树脂中的一种或者多种组成。本发明通过对载体膜各层主体树脂的优化,使得载体膜在具有良好的耐UV性能的同时,可以简化结构和制备方法,且能够很好的将导线粘结在电池片上。
Description
技术领域
本发明具体涉及一种光伏组件用载体膜及光伏组件。
背景技术
目前光伏行业组件的发展趋势是从3主栅变成4主栅、5主栅,近而发展成现在的多主栅。近几年有提出无主栅组件,可以节约银的用量以及减少栅线对电池片遮挡,提高发电效率,如泰州隆基乐叶CN201720080886.4 IBC电池的电极互联结构, CN201710054876.8一种N型双面电池互联工艺;深圳市拉普拉斯能源技术有限公司CN201720292907.9 无主栅太阳能电池组件。
目前无主栅组件的电池片的导线有两种方式固定于电池片上:
1是通过电镀工艺,如苏州太阳井新能源有限公司,CN201820959124.6 一种无主栅双面电镀金属化太阳能电池片;
2. 通过一个粘接膜将导线载住,在层压时固定在电池片上,如黄河水电光伏产业技术有限公司 CN201510933299.0 一种用于太阳能电池的无主栅焊带的制备方法。
发明内容
本发明的目的是提供一种能够很好的将导线粘结在电池片上的光伏组件用载体膜及光伏组件。
为达到上述目的,本发明采用的技术方案是:
本发明第一方面提供一种光伏组件用载体膜,包括粘结层和支撑层,所述的粘结层的原料配方包括第一主体树脂,所述的支撑层的原料配方包括第二主体树脂,其中,所述的第一主体树脂为聚乙烯(PE)、聚烯烃弹性体(POE)、乙烯-醋酸乙烯共聚物(EVA)、乙烯-丙烯酸共聚物(EAA)、乙烯-丙烯酯共聚物(EMA)、尼龙、离子键聚合体中的一种或者多种组成;所述的第二主体树脂为聚乙烯、尼龙、尼龙聚烯烃接枝共聚物、乙烯-丙烯共聚物、乙烯-丙烯酸共聚物、聚偏氟乙烯(PVF)、聚偏二氟乙烯(PVDF)、硅树脂中的一种或者多种组成。
本发明通过对载体膜各层主体树脂的优化,使得载体膜在具有良好的耐UV性能的同时,可以简化结构和制备方法,且能够很好的将导线粘结在电池片上。
优选地,所述的第一主体树脂为聚烯烃弹性体、乙烯-醋酸乙烯共聚物、乙烯-丙烯酸共聚物、乙烯-丙烯酯共聚物、尼龙、离子键聚合体中的一种或者多种组成;所述的第二主体树脂为线性低密度聚乙烯、尼龙、尼龙聚烯烃接枝共聚物、乙烯-丙烯共聚物、乙烯-丙烯酸共聚物、聚偏氟乙烯、聚偏二氟乙烯、硅树脂中的一种或者多种组成。
进一步优选地,所述的离子键聚合体为乙烯-(甲基)丙烯酸锌盐、钠盐、锂盐等离子键聚合体。
优选地,所述的粘结层的厚度为20~500μm;所述的支撑层的厚度为10~400μm。
优选地,以所述的第一主体树脂的重量为100份计,所述的粘结层的原料配方还包括0~1份交联剂、0~1份助交联剂、0~1份偶联剂、0~1份光稳定剂、0~1份抗氧剂、0~1份抗PID助剂,且所述的交联剂、所述的助交联剂、所述的偶联剂、所述的光稳定剂、所述的抗氧剂、所述的抗PID助剂的添加量不同时为0。
进一步优选地,以所述的第一主体树脂的重量为100份计,所述的粘结层的原料配方还包括0~1份交联剂、0.1~1份助交联剂、0.1~1份偶联剂、0.1~1份光稳定剂、0.1~1份抗氧剂、0.1~1份抗PID助剂。
更为优选地,以所述的第一主体树脂的重量为100份计,所述的粘结层的原料配方还包括0~0.8份交联剂、0.3~0.9份助交联剂、0.1~0.5份偶联剂、0.2~0.8份光稳定剂、0.1~0.5份抗氧剂、0.1~0.5份抗PID助剂。
根据一种实施方式,所述的粘结层为交联型粘结剂层,以所述的第一主体树脂的重量为100份计,所述的粘结层的原料配方还包括0.2~0.8份交联剂、0.3~0.9份助交联剂、0.1~0.5份偶联剂、0.2~0.8份光稳定剂、0.1~0.5份抗氧剂、0.1~0.5份抗PID助剂。
根据另一种实施方式,所述的粘结层为非交联型粘结剂层,以所述的第一主体树脂的重量为100份计,所述的粘结层的原料配方还包括0.3~0.9份助交联剂、0.1~0.5份偶联剂、0.2~0.8份光稳定剂、0.1~0.5份抗氧剂、0.1~0.5份抗PID助剂。
优选地,以所述的第二主体树脂的重量为100份计,所述的支撑层的原料配方还包括0~1份交联剂、0~1份助交联剂、0~1份偶联剂、0~1份光稳定剂、0~1份抗氧剂、0~1份抗PID助剂,且所述的光稳定剂、所述的抗氧剂、所述的抗PID助剂的添加量不同时为0。
进一步优选地,以所述的第二主体树脂的重量为100份计,所述的支撑层的原料配方还包括0~1份交联剂、0~1份助交联剂、0~1份偶联剂、0.1~1份光稳定剂、0.1~1份抗氧剂、0.1~1份抗PID助剂。
根据一种实施方式,所述的支撑层为非交联型支撑层,以所述的第二主体树脂的重量为100份计,所述的支撑层的原料配方还包括0.2~0.8份光稳定剂、0.1~0.5份抗氧剂、0.1~0.5份抗PID助剂。
根据另一种实施方式,所述的支撑层为交联型支撑层,以所述的第二主体树脂的重量为100份计,所述的支撑层的原料配方还包括0.2~0.5份交联剂、0.2~0.6份助交联剂、0.1~0.3份偶联剂、0.2~0.5份光稳定剂、0.1~0.3份抗氧剂、0.1~0.3份抗PID助剂。
根据一种实施方式,所述的载体膜由所述的粘结层和所述的支撑层构成。
优选地,所述的粘结层的厚度为20~80μm,所述的支撑层的厚度为20~80μm。
优选地,所述的载体膜通过双层共挤流延的方法制得。
该实施方式中,所述的粘结层与金属焊带及电池片直接接触。
根据另一种实施方式,所述的粘结层位于所述的支撑层的一侧,所述的载体膜还包括设置在所述的支撑层的另一侧的上粘层。
优选地,按重量份计,所述的上粘层的原料配方包括:100份第三主体树脂、0~1份交联剂、0~1份助交联剂、0~1份偶联剂、0~1份光稳定剂、0~1份抗氧剂、0~1份抗PID助剂,且所述的交联剂、所述的助交联剂、所述的偶联剂、所述的光稳定剂、所述的抗氧剂、所述的抗PID助剂的添加量不同时为0,所述的第三主体树脂为乙烯-醋酸乙烯共聚物和/或聚烯烃弹性体。
进一步优选地,所述的上粘层的原料配方包括:100份第三主体树脂、0.1~1份交联剂、0.1~1份助交联剂、0.1~1份偶联剂、0.1~1份光稳定剂、0.1~1份抗氧剂、0.1~1份抗PID助剂。
更为优选地,所述的上粘层的原料配方包括:100份第三主体树脂、0.2~0.8份交联剂、0.3~0.9份助交联剂、0.1~0.5份偶联剂、0.2~0.8份光稳定剂、0.1~0.5份抗氧剂、0.1~0.5份抗PID助剂。
优选地,所述的上粘层的厚度为20~300μm,优选为20~80μm。
优选地,所述的粘结层的厚度为20~80μm,所述的支撑层的厚度为20~80μm。
优选地,所述的上粘层与所述的粘结层相同。
优选地,所述的载体膜通过三层共挤流延的方法制得。
该实施方式中,所述的粘结层与金属焊带及电池片直接接触,所述的上粘层与封装胶膜直接接触。
根据再一种实施方式,所述的载体膜还包括设置在所述的粘结层和所述的支撑层之间的胶水层或涂层。
优选地,所述的胶水层或涂层通过涂布方法与所述的粘结层和所述的支撑层复合。
该实施方式中,所述的粘结层与金属焊带及电池片直接接触。
本发明中,所述的交联剂为选自过氧化2-乙基己基碳酸叔丁酯、叔丁基过氧化-异丙基碳酸酯、过氧化二苯甲酰、过氧化二异丙苯、2,5-二甲基-2,5-双(叔丁基过氧基)己烷、过氧化环己酮、叔丁基过氧化氢、过氧苯甲酸叔丁酯、过氧乙酸叔丁酯、过氧重碳酸二-(4-叔丁基环己基)酯、叔丁基过氧化-3,5,5-三甲基己酸酯、三烯丙基异氰酸酯(TAIC)中的一种或几种。
本发明中,所述的助交联剂为选自三羟甲基丙烷三丙烯酸酯、2-三羟甲基丙烷四丙烯酸酯、乙氧化三羟甲基丙烷三丙烯酸酯、乙氧化三羟甲基丙烷三丙烯酸酯、丙氧化三羟甲基丙烷三丙烯酸酯、4-(二甲氨基)苯甲酸乙酯、过氧化二异丙苯(DCP)中的一种或几种。
本发明中,所述的偶联剂为选自3-甲基丙烯酰氧基丙基甲基三甲氧基硅烷、3-缩水甘油丙基三甲氧基硅烷、乙烯基三甲氧基硅烷、3-氨丙基三乙氧基硅烷、乙烯基三甲氧基硅烷中的一种或几种。
本发明中,所述的光稳定剂为选自双(2,2,6,6-四甲基-4-哌啶基)癸二酸酯(光稳定剂770)、聚丁二酸(4-羟基-2,2,6,6-四甲基-1-哌啶乙醇)酯、聚-{[6-[(1,1,3,3-四甲基丁基)-亚氨基]-1,3,5-三嗪-2,4-二基][2-(2,2,6,6-四甲基哌啶基)-氨基]-亚已基-[4-(2,2,6,6-四甲基哌啶基)-亚氨基]}中的一种或几种。
本发明中,所述的抗氧剂为酚系抗氧剂、亚磷酸酯系抗氧剂和受阻胺类抗氧剂中的一种或几种。
本发明中,抗PID助剂为金属离子捕捉剂。
本发明的第二方面是提供一种所述的载体膜在光伏组件中的应用。
具体地,所述的载体膜用于将导线固定在电池片上。
本发明的第三方面是提供一种光伏组件,包括电池片和导线,所述的光伏组件还包括用于将所述的导线固定在所述的电池片上的载体膜,所述的载体膜为上述载体膜。
由于上述技术方案运用,本发明与现有技术相比具有下列优点:
本发明通过对载体膜各层主体树脂的优化,使得载体膜在具有良好的耐UV性能的同时,可以简化结构和制备方法,且能够很好的将导线粘结在电池片上。
具体实施方式
下面结合具体实施例对本发明作进一步描述,但本发明并不限于以下实施例。实施例中采用的实施条件可以根据具体使用的不同要求做进一步调整,未注明的实施条件为本行业中的常规条件。
实施例1
双层结构:
粘结层:主树脂尼龙1212 100份,0.5份交联剂TAIC,0.6份助交联剂DCP,0.2份偶联剂乙烯基三甲氧基硅烷,0.5份光稳定剂770,0.2份抗氧剂1010,0.2份抗PID助剂;经高混机混合均匀后挤出造粒。
支撑层:主树脂线性低密度聚乙烯(LLDPE) 100份,0.5份光稳定剂770,0.2份抗氧剂1010,0.2份抗PID助剂;经高混机混合均匀后挤出造粒。
通过双层共挤、流延技术得到双层结构的80μm厚的膜,粘结层40μm,支撑层40μm。
实施例2
三层结构
上粘结层:主树脂POE 100份,0.5份交联剂TAIC,0.6份助交联剂DCP,0.2份偶联剂乙烯基三甲氧基硅烷,0.5份光稳定剂770,0.2份抗氧剂1010,0.2份抗PID助剂;经高混机混合均匀。
支撑层:主树脂聚偏氟乙烯(PVDF)100份,0.5份光稳定剂770,0.2份抗氧剂1010,0.2份抗PID助剂;经高混机混合均匀后挤出造粒。
下粘结层:主树脂POE 100份,0.5份交联剂TAIC,0.6份助交联剂DCP,0.2份偶联剂乙烯基三甲氧基硅烷,0.5份光稳定剂770,0.2份抗氧剂1010,0.2份抗PID助剂;经高混机混合均匀。
通过三层共挤、流延技术得到三层结构的120μm厚的膜,上粘结层40μm,支撑层40μm,下粘结层40μm。
实施例3
支撑层:50μm透明PVDF膜(购买)
粘结层:主树脂POE 100份,0.5份交联剂TAIC,0.6份助交联剂DCP,0.2份偶联剂乙烯基三甲氧基硅烷,0.5份光稳定剂770,0.2份抗氧剂1010,0.2份抗PID助剂;经高混机混合均匀后流延成40μm薄膜。
通过涂布复合工艺将上述支撑层与粘结层支撑复合膜,中间胶水为丙烯酸或聚氨酯胶水。
实施例4
双层结构
粘结层:主树脂乙烯-醋酸乙烯共聚物 100份,0.6份助交联剂DCP,0.2份偶联剂乙烯基三甲氧基硅烷,0.5份光稳定剂770,0.2份抗氧剂1010,0.2份抗PID助剂;经高混机混合均匀后挤出造粒。
支撑层:主树脂线性低密度聚乙烯(LLDPE)100份,乙烯-丙烯酸共聚物65份,0.5份交联剂TAIC,0.6份助交联剂2,5-二甲基-2,5-双(叔丁基过氧基)己烷,0.2份偶联剂乙烯基三甲氧基硅烷,0.5份光稳定剂770,0.2份抗氧剂1010,0.2份抗PID助剂;经高混机混合均匀后挤出造粒。
通过双层共挤、流延技术得到双层结构的80μm厚的膜,粘结层40μm,支撑层40μm。
本实施例的支撑层为交联型,粘结层为非交联型,在保证粘合性的同时确保膜在高温下不会出现熔融破损。
实施例5
双层结构
粘结层:主树脂乙烯-醋酸乙烯共聚物 100份,0.6份助交联剂DCP,0.2份偶联剂乙烯基三甲氧基硅烷,0.5份光稳定剂770,0.2份抗氧剂1010,0.2份抗PID助剂;经高混机混合均匀后挤出造粒。
支撑层:主树脂尼龙聚烯烃接枝共聚物100份, 0.5份光稳定剂770,0.2份抗氧剂1010,0.2份抗PID助剂;经高混机混合均匀后挤出造粒。
通过双层共挤、流延技术得到双层结构的80μm厚的膜,粘结层40μm,支撑层40μm。
本实施例支撑层为高熔点非交联型,粘结层也为非交联型。
对比例1
粘结层:主树脂PET 100份,0.5份交联剂TAIC,0.6份助交联剂DCP,0.2份偶联剂乙烯基三甲氧基硅烷,0.5份光稳定剂770,0.2份抗氧剂1010,0.2份抗PID助剂;经高混机混合均匀后挤出造粒。
支撑层:主树脂线性低密度聚乙烯(LLDPE)100份,0.5份光稳定剂770,0.2份抗氧剂1010,0.2份抗PID助剂;经高混机混合均匀后挤出造粒。
通过双层共挤、流延技术得到双层结构的80μm厚的膜,粘结层40μm,支撑层40μm。
对比例2
三层结构
上粘结层:主树脂POE 100份,0.5份交联剂TAIC,0.6份助交联剂DCP,0.2份偶联剂乙烯基三甲氧基硅烷,0.5份光稳定剂770,0.2份抗氧剂1010,0.2份抗PID助剂;经高混机混合均匀。
支撑层:主树脂 PET 100份,0.5份光稳定剂770,0.2份抗氧剂1010,0.2份抗PID助剂;经高混机混合均匀后挤出造粒。
下粘结层:主树脂POE 100份,0.5份交联剂TAIC,0.6份助交联剂DCP,0.2份偶联剂乙烯基三甲氧基硅烷,0.5份光稳定剂770,0.2份抗氧剂1010,0.2份抗PID助剂;经高混机混合均匀。
通过三层共挤、流延技术得到三层结构的120μm厚的膜,上粘结层40μm,支撑层40μm,下粘结层40μm。
对比例3
支撑层:50μm市售PET膜
粘结层:主树脂POE 100份,0.5份交联剂TAIC,0.6份助交联剂DCP,0.2份偶联剂乙烯基三甲氧基硅烷,0.5份光稳定剂770,0.2份抗氧剂1010,0.2份抗PID助剂;经高混机混合均匀后流延成40μm薄膜。
通过涂布复合工艺将上述支撑层与粘结层支撑复合膜,中间胶水为丙烯酸或聚氨酯胶水。上述实施例和对比例制得的载体膜按照如下方法进行检测,检测结果见表1。
各性能的检测和评定方法如下:
收缩率:GB/T 13541-92;
与封装胶膜剥离力:180°剥离;
透过率:IEC60664-1;
雾度:ISO 14782;
粉化程度:目测;
△b:ASTM E313;
△Y:ASTM E313。
表1
上述实施例只为说明本发明的技术构思及特点,其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施,并不能以此限制本发明的保护范围。凡根据本发明精神实质所作的等效变化或修饰,都应涵盖在本发明的保护范围之内。
Claims (8)
1.一种光伏组件用载体膜,包括粘结层和支撑层,其特征在于:所述的粘结层的原料配方包括第一主体树脂,所述的第一主体树脂为乙烯-醋酸乙烯共聚物;以所述的第一主体树脂的重量为100份计,所述的粘结层的原料配方还包括0.3~0.9份助交联剂、0.1~0.5份偶联剂、0.2~0.8份光稳定剂、0.1~0.5份抗氧剂、0.1~0.5份抗PID助剂;
所述的支撑层的原料配方包括第二主体树脂,所述的第二主体树脂为线性低密度聚乙烯和乙烯-丙烯共聚物的组合,或者为尼龙聚烯烃接枝共聚物;
当所述第二主体树脂为线性低密度聚乙烯和乙烯-丙烯共聚物的组合时,以所述的第二主体树脂的重量为100份计,所述的支撑层的原料配方还包括0.2~0.5份交联剂、0.2~0.6份助交联剂、0.1~0.3份偶联剂、0.2~0.5份光稳定剂、0.1~0.3份抗氧剂、0.1~0.3份抗PID助剂;
当所述第二主体树脂为尼龙聚烯烃接枝共聚物时,以所述的第二主体树脂的重量为100份计,所述的支撑层的原料配方还包括0.2~0.8份光稳定剂、0.1~0.5份抗氧剂、0.1~0.5份抗PID助剂;
所述的载体膜用于将导线固定在电池片上。
2.根据权利要求1所述的光伏组件用载体膜,其特征在于:所述的粘结层的厚度为20~500μm;所述的支撑层的厚度为10~400μm。
3.根据权利要求1所述的光伏组件用载体膜,其特征在于:所述的载体膜由所述的粘结层和所述的支撑层构成;或者,所述的粘结层位于所述的支撑层的一侧,所述的载体膜还包括设置在所述的支撑层的另一侧的上粘层;或者,所述的载体膜还包括设置在所述的粘结层和所述的支撑层之间的胶水层或涂层。
4.根据权利要求3所述的光伏组件用载体膜,其特征在于:按重量份计,所述的上粘层的原料配方包括:100份第三主体树脂、0~1份交联剂、0~1份助交联剂、0~1份偶联剂、0~1份光稳定剂、0~1份抗氧剂、0~1份抗PID助剂,且所述的交联剂、所述的助交联剂、所述的偶联剂、所述的光稳定剂、所述的抗氧剂、所述的抗PID助剂的添加量不同时为0,所述的第三主体树脂为乙烯-醋酸乙烯共聚物和/或聚烯烃弹性体。
5.根据权利要求3所述的光伏组件用载体膜,其特征在于:所述的上粘层的厚度为20~300μm。
6.根据权利要求1至5中任一项所述的光伏组件用载体膜,其特征在于:
所述的交联剂为选自过氧化2-乙基己基碳酸叔丁酯、叔丁基过氧化-异丙基碳酸酯、过氧化二苯甲酰、过氧化二异丙苯、2,5-二甲基-2,5-双(叔丁基过氧基)己烷、过氧化环己酮、叔丁基过氧化氢、过氧苯甲酸叔丁酯、过氧乙酸叔丁酯、过氧重碳酸二-(4-叔丁基环己基)酯、叔丁基过氧化-3,5,5-三甲基己酸酯、三烯丙基异氰酸酯中的一种或几种;
所述的助交联剂为选自三羟甲基丙烷三丙烯酸酯、2-三羟甲基丙烷四丙烯酸酯、乙氧化三羟甲基丙烷三丙烯酸酯、乙氧化三羟甲基丙烷三丙烯酸酯、丙氧化三羟甲基丙烷三丙烯酸酯、4-(二甲氨基)苯甲酸乙酯、过氧化二异丙苯中的一种或几种;
所述的偶联剂为选自3-甲基丙烯酰氧基丙基甲基三甲氧基硅烷、3-缩水甘油丙基三甲氧基硅烷、乙烯基三甲氧基硅烷、3-氨丙基三乙氧基硅烷、乙烯基三甲氧基硅烷中的一种或几种;
所述的光稳定剂为选自双(2,2,6,6-四甲基-4-哌啶基)癸二酸酯、聚丁二酸(4-羟基-2,2,6,6-四甲基-1-哌啶乙醇)酯、聚-{[6-[(1,1,3,3-四甲基丁基)-亚氨基]-1,3,5-三嗪-2,4-二基][2-(2,2,6,6-四甲基哌啶基)-氨基]-亚已基-[4-(2,2,6,6-四甲基哌啶基)-亚氨基]}中的一种或几种;
所述的抗氧剂为酚系抗氧剂、亚磷酸酯系抗氧剂和受阻胺类抗氧剂中的一种或几种;
抗PID助剂为金属离子捕捉剂。
7.一种如权利要求1至6中任一项所述的载体膜在光伏组件中的应用。
8.一种光伏组件,包括电池片和导线,其特征在于:所述的光伏组件还包括用于将所述的导线固定在所述的电池片上的载体膜,所述的载体膜为如权利要求1至6中任一项所述的载体膜。
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