CN110628335A - 一种储能型poe光伏封装胶膜及其制备方法 - Google Patents
一种储能型poe光伏封装胶膜及其制备方法 Download PDFInfo
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- GTELLNMUWNJXMQ-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;prop-2-enoic acid Chemical class OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.CCC(CO)(CO)CO GTELLNMUWNJXMQ-UHFFFAOYSA-N 0.000 claims description 3
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- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明公开一种储能型POE光伏封装胶膜及其制备方法,该封装胶膜的原料包括:POE基体树脂、过氧化物交联剂、交联助剂、硅烷偶联剂,还包括发光剂,且所述发光剂为磷光发光剂。本发明主要是于光伏组件用的POE封装胶膜原料体系中,创造性地引入了特定量比的磷光发光剂,并采用一次混合及熔融流延成型的工艺步骤,使得通过本发明制备所得的POE胶膜,在有效保障主要综合性能指标的情况下,能够将部分光能转变成化学能储存,进而在夜间帮助光伏组件自主发电,克服常规光伏组件夜间发电间断性的问题。
Description
技术领域
本发明涉及一种POE胶膜及其制备方法,特别是一种储能型POE光伏封装胶膜及其制备方法,该储能型POE胶膜适用于光伏封装用,属于热熔胶膜及其封装应用领域。
背景技术
随着经济的快速发展,能源短缺现象将越来越严重。面对能源需要和环境保护的双重压力,世界各国采取了提高能源利用率、改善能源结构,发展可再生能源等策略。
太阳能光伏发电作为新能源发电的代表,在电网中发电量的占比不断增加。整个光伏组件的发电效率也逐年提升,但始终有一个问题无法避免,就是光伏发电的间断性。由于光伏发电是通过日间的单晶硅或多晶硅吸收太阳光能形成电位差来形成电流的,那么在夜间没有太阳光能的情况下,这种发电形式将不能进行。
目前工业上常规光伏组件形式主要为上层玻璃—上层封装胶膜—电池片—下层封装胶膜—下层背板/玻璃的形成的夹层结构。太阳光线透过上层玻璃及上层封装胶膜照射到电池片表面进行光电转化进而发电。上层封装胶膜一般是高透明层胶膜,其于组件中主要起到阻隔水汽及金属离子进而保护电池片的作用。但对于发电功率本身没有增益的作用。
同时,随着PERC型电池片在光伏组件应用上的不断扩大,太阳能光伏组件中常规所用的EVA封装胶膜,也逐渐不能满足相关封装要求。
故,如何提供一种更适于PERC型电池片光伏组件用的、且成本相对较低的、能有效解决光伏组件夜间发电间断性问题的封装胶膜,成为亟待解决的问题。
发明内容
本发明的目的在于解决上述技术问题,提供一种储能型POE光伏封装胶膜及其制备方法,使得通过本发明制备所得的POE光伏封装胶膜,可以将日间吸收的部分太阳光能转化成化学能储存,进而在夜间自主帮助光伏组件进行发电。
本发明所采用的技术方案为:一种储能型POE光伏封装胶膜,其原料构成包括:POE基体树脂、交联剂、交联助剂及偶联剂,还包括发光剂,且该发光剂为磷光发光剂。
上述各原料的用量,按质量份数计,具体为:
POE基体树脂:100份;
交联剂:1.1-1.4份;
交联助剂:0.8-1份;
硅烷偶联剂:0.6-0.7份;
磷光发光剂:0.1-1.2份。
上述POE基体树脂为乙烯-丁烯共聚物、乙烯-辛烯共聚物、乙烯-丙烯共聚物中的一种或是几种复配而成。在本发明的体系中,POE基体树脂不论通过几种共聚物复配而成,或是仅为单一的共聚物,为保障胶膜的成膜性,其熔融指数为10g/10min-30 g/10min,熔程为65℃-133℃;
上述交联剂为过氧化物交联剂,选自过氧化苯甲酰、过氧化二异丙苯、过氧化马来酸叔丁酯、叔丁基过氧化碳酸异丙酯中的一种或几种混合;
上述交联助剂为多功能团甲基丙烯酸酯类单体,具体为三烯丙基氰脲酸酯、三烯丙基异氰脲酸酯、三甲基丙烯酸(三羟甲基丙基)酯、2,2-双(烯丙基氧基甲基)-丁烷-1醇、乙二醇二乙基二烯丙基醚、二甲基丙烯酸乙二醇酯、甲撑双丙烯酰胺、丙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、1,6-己二醇二丙烯酸酯中的一种或几种混合;
上述偶联剂为硅烷偶联剂,具体为γ-缩水甘油醚氧丙基三甲氧基硅烷、γ-(甲基丙烯酰氧)丙基三甲氧基硅烷、γ―氨丙基三乙氧基硅烷中的一种或几种混合;
上述磷光发光剂为过渡金属盐无机磷光粉、稀土化合物、铝酸盐、硅酸盐、过渡金属有机化合物及其衍生物的一种或多种按任意配比混合组成。进一步的,该磷光发光剂优选为过渡金属盐无机磷光粉和稀土化合物。进一步的,上述过渡金属盐无机磷光粉优选为硫化物掺杂物或氧化物掺杂物,具体可选自:ZnS:Cu、ZnS:MnCu、ZnS:Cu、ZnS:Eu、ZnS:Br等,以及CaS:Eu、CaS:Ce、MgAI11O9:Ce、MgAI11O9:Tb等;上述稀土化合物具体可为Y(PV)O4:Eu、YVO4:Eu、YVO4:Tb、YPO4:Ce、YPO4:Th、MgSrBF3:Eu等的一种或几种。
在本发明体系中,磷光发光剂加入量过多,会导致POE胶膜的透光率、体积电阻率、水汽阻隔率及粘接性能下降太多等不利结果;加入量过少,不足以起到能量储存的作用。
制备上述储能型POE光伏封装胶膜时,先按预设比例称取原料,然后投入到高速混料机中充分混合,混合好后的物料再加入到流延机中,经过熔融塑化、流延成型、冷却及收卷步骤即得。
上述储能型POE光伏封装胶膜的厚度可以视需求作出合适的厚度,优选厚度为0.2-1mm,优选为0.5mm。
本发明的创新之处及有益效果在于:于光伏组件用的POE封装胶膜原料体系中创造性地引入了特定量比的磷光发光剂,并采用一次混合及熔融流延成型的工艺步骤,使得通过本发明制备所得的POE胶膜,在有效保障主要综合性能指标的情况下,能够将部分光能转变成化学能储存,进而在夜间帮助光伏组件自主发电,克服常规光伏组件夜间发电间断性的问题。
具体实施方式
下面通过具体实施例对本发明做进一步的具体说明,但并不以此为限。
实施例1
将上述原料加入到高速混合机中混合均匀,然后加入到流延机中,经加热熔融、流延成膜、冷却及收卷的步骤,得到POE封装胶膜。选取厚度0.5mm的样品,标记为S1。
实施例2
将上述原料加入到高速混合机中混合均匀,然后加入到流延机中,经加热熔融、流延成膜、冷却及收卷的步骤,得到POE封装胶膜。选取厚度0.5mm的样品,标记为S2。
实施例3
将上述原料加入到高速混合机中混合均匀,然后加入到流延机中,经加热熔融、流延成膜、冷却及收卷的步骤,得到POE封装胶膜。选取厚度0.5mm的样品,标记为S3。
实施例4
将上述原料加入到高速混合机中混合均匀,然后加入到流延机中,经加热熔融、流延成膜、冷却及收卷的步骤,得到POE封装胶膜。选取厚度0.5mm的样品,标记为S4。
实施例5
将上述原料加入到高速混合机中混合均匀,然后加入到流延机中,经加热熔融、流延成膜、冷却及收卷的步骤,得到POE封装胶膜。选取厚度0.5mm的样品,标记为S5。
同时,申请人还按照常规的POE封装胶膜的原料体系,参考实施例1-5的用量配比,去除了其中的磷光发光剂原料,并采用相同的制备步骤,做出相应的对比例样品D1-D5。
性能测试
申请人将上述各实施例所得样品S1-S5及对比例所得样品D1-D5应用形成同等的光伏层压组件,参考相关国家标准,进行常规功率测试及阳光暴晒1h及5h后的功率。
测试结果具体如下表所示:
从上表中可明显看出,各实施例样品S1-S5,相较于对比例D1-D5,组件于阳光暴晒1h及5h后,仍能维持较高的发电功率,进行有效的发电工作;进而有效表明,通过本发明制备所得的POE胶膜,在最大限度地保障组件的日间发电功率的同时,能够在夜间帮助光伏组件自主发电,提供较长时间的发电工作,克服常规光伏组件夜间发电间断性的问题。
同时,发明人还对各实施例样品S1-S5及对比例D1-D5的其他主要性能指标,如透光率、体积电阻率、剥离强度、水汽透过率等进行测试。结果显示,通过本发明制备所得的POE胶膜,可以最大限度地保证较高的透光率和体积电阻率,同时,水汽透过率和剥离强度也没有发现明显变化。且DH1000老化后,功率衰减并无明显不同,证明该夜光POE具有较高的可靠性及长期耐候性。
Claims (10)
1.一种储能型POE光伏封装胶膜,该封装胶膜的原料包括:POE基体树脂、过氧化物交联剂、交联助剂、硅烷偶联剂;其特征在于:所述封装胶膜的原料构成还包括发光剂,且所述发光为磷光发光剂;同时,所述各原料的用量,按质量份数计,为:
POE基体树脂:100份;
过氧化物交联剂:1.1-1.4份;
交联助剂:0.8-1.1份;
硅烷偶联剂:0.6-0.7份;
磷光发光剂:0.1-1.2份;
所述POE基体树脂熔指为10g/10min-30 g/10min,熔程为65℃-133℃;所述交联助剂为多功能团甲基丙烯酸酯类单体;所述磷光发光剂为过渡金属盐无机磷光粉、稀土化合物、铝酸盐、硅酸盐、过渡金属有机化合物及其衍生物的一种或多种按任意配比混合组成。
2.如权利要求1所述的储能型POE光伏封装胶膜,其特征在于:所述POE基体树脂为乙烯-丁烯共聚物、乙烯-辛烯共聚物、乙烯-丙烯共聚物中的一种或是几种复配而成。
3.如权利要求1所述的储能型POE光伏封装胶膜,其特征在于:所述磷光发光剂为过渡金属盐无机磷光粉或稀土化合物。
4.如权利要求1所述的储能型POE光伏封装胶膜,其特征在于:所述交联助剂为三烯丙基氰脲酸酯、三烯丙基异氰脲酸酯、三甲基丙烯酸(三羟甲基丙基)酯、2,2-双(烯丙基氧基甲基)-丁烷-1醇、乙二醇二乙基二烯丙基醚、二甲基丙烯酸乙二醇酯、甲撑双丙烯酰胺、丙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、1,6-己二醇二丙烯酸酯中的一种或几种混合。
5.一种储能型POE光伏封装胶膜的制备方法,其特征在于,包括如下步骤:
(1)、按预设比例,选取原料,具体为:POE基体树脂100份、过氧化物交联剂1.1-1.4份、交联助剂0.8-1.1份、硅烷偶联剂0.6-0.7份,及磷光发光剂0.1-1.2份;
(2)、将上述原料投入到高速混合机中混合均匀;
(3)、将混合均匀的物料,加入到流延机中,经熔融塑化、流延成型、冷却及收卷步骤即得;
所述步骤(1)中,POE基体树脂的熔指为10g/10min-30 g/10min,熔程为65℃-133℃;所述交联助剂为多功能团甲基丙烯酸酯类单体;所述磷光发光剂为过渡金属盐无机磷光粉、稀土化合物、铝酸盐、硅酸盐、过渡金属有机化合物及其衍生物的一种或多种按任意配比混合组成。
6.如权利要求5所述的储能型POE光伏封装胶膜的制备方法,其特征在于:所述POE基体树脂为乙烯-丁烯共聚物、乙烯-辛烯共聚物、乙烯-丙烯共聚物中的一种或是几种复配而成。
7.如权利要求5所述的储能型POE光伏封装光伏封装胶膜的制备方法,其特征在于:所述磷光发光剂为过渡金属盐无机磷光粉或稀土化合物。
8.如权利要求5所述的储能型POE胶膜的制备方法,其特征在于:所述交联助剂为三烯丙基氰脲酸酯、三烯丙基异氰脲酸酯、三甲基丙烯酸(三羟甲基丙基)酯、2,2-双(烯丙基氧基甲基)-丁烷-1醇、乙二醇二乙基二烯丙基醚、二甲基丙烯酸乙二醇酯、甲撑双丙烯酰胺、丙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、1,6-己二醇二丙烯酸酯中的一种或几种混合。
9.如权利要求5所述的储能型POE光伏封装胶膜的制备方法,其特征在于:所述储能型POE胶膜的厚度为0.2-1mm。
10.如权利要求9所述的储能型POE光伏封装胶膜的制备方法,其特征在于:所述储能型POE胶膜的厚度为0.5mm。
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