CN110931585A - 一种晶硅光伏组件背板及其制备方法 - Google Patents
一种晶硅光伏组件背板及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种改进的晶硅光伏组件背板及其制备方法，其具有较高的反射率，且生产工艺简单、生产成本较低。该晶硅光伏组件背板，包括高反射微发泡层，高反射微发泡层中具有微孔，高反射微发泡层由高反射微发泡原料经过物理发泡和/或化学发泡，再经过选自热固化、光固化、辐射固化及微波固化中的一种或多种方式的组合定型后形成。
Description
技术领域
本发明属于太阳能光伏组件领域，具体涉及一种高反射的晶硅光伏组件背板及其制备方法。
背景技术
随着煤、石油、天然气等石化燃料的日益枯竭和环境污染日益严重，大力发展新能源已经成为一项全球化的重要任务。太阳能是一种清洁、高效和永不衰竭的新能源，无论是现在还是将来太阳能都拥有广阔的市场前景。近年来，作为绿色能源的代表，太阳能发电越来越受到人们关注。众所周知，太阳能组件是由前层玻璃、前层EVA胶膜、电池片，后层EVA胶膜、太阳能背板、铝边框等封装组成，其中太阳能背板位于整个组件背面在起到电气绝缘性的同时在阻水、阻氧方面还必须要有一定的作用，用于保护电池片不被侵蚀。背板除了应具有水汽阻隔性、电气绝缘性、与EVA的粘结性、耐候性等保护电池片的性能之外，还应该具有高反射性能，使照射到组件上的太阳光最大程度地被电池片所利用，提高光伏组件的光电转化效率，降低发电成本。
目前，普通的背板还不能满足高反射的要求，需要通过添加特殊的填料和表面图案化等手段来提高光伏背板的反射率。如中国专利CN101645465A和CN204315600U提供了通过添加高反射填料和改变背板表面结构来制备光伏背板的方法，可以制得具有较高反射率的背板。同时，光伏发电平价上网是近期的终极目标，提效和降本是目前大势所趋，背板价格是决定其能否在光伏组件中大规模应用的重要因素。因此，在保证材料可靠性基础上，研发出一款更高反射、更低成本的背板材料是市场的迫切需求，在满足提高光伏组件的光电转化效率的同时，又可以降低组件制作成本。
发明内容
本发明的目的是提供一种改进的晶硅光伏组件背板，其具有较高的反射率，且生产工艺简单、生产成本较低。本发明还提供一种晶硅光伏组件背板的制备方法，其生产工艺简单且制得的晶硅光伏组件背板具有较高的反射率。
为达到上述目的，本发明采用如下技术方案：
一种晶硅光伏组件背板，包括依次层叠的耐候层、聚合物基膜层及高反射微发泡层，所述高反射微发泡层中具有微孔，所述高反射微发泡层由高反射微发泡原料经过物理发泡和/或化学发泡，为了防止泡孔在背板使用过程中坍塌，所以还需再经过选自热固化、光固化、辐射固化及微波固化中的一种或多种方式的组合定型后形成。
优选地，所述热固化条件为温度80～250℃，时间5～300s；所述光固化条件为紫外光固化，时间1～300s；所述辐射固化条件为电子辐射，时间5～300s；所述微波固化条件为电磁波，时间5～300s。
优选地，所述高反射微发泡原料包括90～100重量份的树脂、0.001～10重量份的发泡剂、0～30重量份的无机填料及1～30重量份的反射填料。
更优选地，所述树脂为聚合物或聚合物的混合物，所述聚合物的单体选自乙烯、丙烯、丁烯、戊烯、辛烯中的一种或多种的组合。
更优选地，所述反射填料选自晶红石型钛白粉、热反射粉、红外陶瓷粉、分子筛活化粉、沸石、介孔二氧化硅、空心玻璃微球、空心陶瓷微球、SiO2气凝胶微粉、金属粉中的一种或多种的组合。
进一步地，所述金属粉包括但不限于银粉、铝粉。
优选地，所述发泡剂包括发泡剂A和/或发泡剂B，所述发泡剂A选自AN类共聚物发泡微球、丙烯酸类共聚物发泡微球、聚苯乙烯共聚物发泡微球、超临界二氧化碳中的一种或多种的组合；所述发泡剂B选自偶氮二甲酰胺、2,2-偶氮二异丁腈、偶氮二甲酸二异丙酯、苯磺酰肼、3,3’-二磺酰肼二苯砜中的一种或多种的组合。具体地，发泡剂A用于物理发泡，发泡剂B用于化学发泡。
优选地，所述高反射微发泡层还包括硅烷偶联剂、交联剂、抗热氧老化剂、光稳定剂及紫外吸收剂中的一种或多种。
更优选地，所述高反射微发泡层由90～100重量份的树脂、0.001～10重量份的发泡剂、 0～30重量份的无机填料、1～30重量份的反射填料、0.1～5重量份的硅烷偶联剂、0.01～5重量份的交联剂、0.001～1重量份的抗热氧老化剂、0.001～1重量份的光稳定剂及0.001～1重量份的紫外吸收剂组成。
在一实施例中，所述无机填料选自玻纤、云母粉、硫酸钡、滑石粉、金属氧化物、瓷粉、蒙脱土、碳酸钙、纳米二氧化钛(粒径为10～100nm)、纳米二氧化硅(粒径为10～100nm)、纳米氟化钙(粒径为10～100nm)、纳米氟化镁(粒径为10～100nm)、纳米碳酸钙(粒径为10～100nm)、纳米氧化镁(粒径为10～100nm)、微米级陶瓷微球(粒径为1～10μm)、微米级玻璃微球(粒径为1～10μm)中的一种或多种的组合。
在一实施例中，所述硅烷偶联剂选自3-三乙氧基甲基硅烷基-1-丙胺、γ-缩水甘油醚氧丙基三甲氧基硅烷、γ-甲基丙烯酰氧基丙基三甲氧基硅烷、乙烯基三甲氧基硅烷、乙烯基三(β-甲氧基乙氧基)硅烷、乙烯基三乙氧基硅烷、乙烯基三异丙氧基硅烷、乙烯基三异丙烯氧基硅烷、甲基乙烯基二乙氧基硅烷、甲基乙烯基二甲氧基硅烷、二乙烯三氨基丙基三甲氧基硅烷中的一种或多种的组合。
在一实施例中，所述交联剂选自过氧化苯甲酰、过氧化丁基异丙苯、2,5-二甲基-2,5- 双(苯甲酰过氧)-己烷、3,3-双(叔丁基过氧)丁酸乙酯、邻，邻-叔丁基-邻-异丙基-单- 过氧化碳酸酯、正丁基4,4-二(过氧化叔丁基)戊酸酯、乙二醇双甲基丙烯酸酯、二乙烯基苯、三甲基丙烷三甲基丙烯酸酯、季戊四醇三丙烯酸酯、季戊四醇三丙烯酸酯、四乙基硅烷、N,N-亚甲基双丙烯酰酯胺中的一种或多种的组合。
在一实施例中，所述抗热氧老化剂选自2,2-亚甲基-双-(4-甲基-6-叔丁基)苯酚、1,3,5- 三(4-叔丁基-3-羟基-2,6-二甲基苯甲基)、3,5-二叔丁基-4-羟基-苯甲酸十六烷基酯、二硬酯基季戊四醇二亚磷酸酯、双酚A双(二苯基磷酸酯)中的一种或多种的组合。
在一实施例中，所述光稳定剂选自癸二酸双-2,2,6,6-四甲基哌啶醇酯、双-1-癸烷氧基 -2,2,6,6-四甲基哌啶-4-醇葵二酸酯、N,N’-双(2,2,6,6-四甲基-4-哌啶基)-1,6-己二胺与2,4- 二氯-6-6(4-吗啉基)-1,3,5-三嗪的复配物、甲基-1,2,2,6,6-五甲基-4-哌啶基癸二酸中的一种或多种的组合。
在一实施例中，所述紫外吸收剂选自2-羟基-4-甲氧基二苯甲酮、2-羟基-4-4-甲氧基-2’- 羧基二苯甲酮、6,7’-亚甲基双(2-甲基-4，3,1-苯并噁嗪)-4-酮、2’,4,4’-四羟基二苯甲酮、 2-(2’-羟基-5-甲基苯基)-5-羧基丁基酯苯并三唑中的一种或多种的组合。
优选地，所述高反射微发泡层通过胶黏剂贴合在所述聚合物基膜层上。
具体地，胶黏剂选自聚氨酯胶黏剂、环氧树脂胶黏剂、丙烯酸树脂胶黏剂、有机硅树脂胶黏剂中的一种或多种的组合。
更优选地，所述高反射微发泡层的厚度为10～200μm，所述聚合物基膜层的厚度为100～500μm，所述耐候层的厚度为10～100μm。
进一步地，所述高反射微发泡层的厚度为30～100μm，所述聚合物基膜层的厚度为100～500μm，所述耐候层的厚度为10～100μm。
优选地，所述聚合物基膜层为PET膜或包括100重量份的PET、0～50重量份的无机颜料、0.1～10重量份的水解稳定剂及0.001～0.1重量份的抗热氧老化剂。
在一实施例中，所述无机颜料选自玻纤、云母粉、硫酸钡、滑石粉、金属氧化物、二氧化钛、铅白、氧化锌、锌钡白中的一种或多种的组合。
优选地，所述耐候层为PTFE膜或包括90～100重量份的氟碳树脂、1～50重量份的无机填料、0～20重量份的颜料、1～10重量份的固化剂及0.01～1重量份的催化剂。
在一实施例中，所述无机填料选自玻纤、云母粉、硫酸钡、滑石粉、金属氧化物、瓷粉、蒙脱土、碳酸钙、沸石、分子筛活化粉、介孔二氧化硅、空心玻璃微球、空心陶瓷微球中的一种或多种的组合；所述颜料选自二氧化钛、铅白、氧化锌、锌钡白、硫化锌、炭黑、氧化铁黑、铜铬黑、锰铁黑、铁铬黑、铬黄、镉黄、氧化铁黄、透明铁黄、氧化铁红、透明铁红、钼铬红、红丹、镉红、氧化铁棕、群青、钴蓝、铁蓝、氧化铬绿、钴绿、铅铬绿、有机颜料中的一种或多种的组合。
本发明还采用如下技术方案：
一种如上所述的晶硅光伏组件背板的制备方法，所述制备方法包括高反射微发泡层的制备步骤，所述高反射微发泡层的制备步骤具体实施如下：将高反射微发泡原料混合后，进行物理发泡和/或化学发泡，再进行定型形成所述高反射微发泡层，定型方式为选自热固化、光固化、辐射固化及微波固化中的一种或多种方式的组合。
优选地，所述制备方法还包括如下步骤：将所述高反射微发泡层通过胶黏剂贴合在聚合物基膜层上。
本发明采用以上方案，相比现有技术具有如下优点：
通过改变背板内部的组成、结构，从而提供了一种生产工艺简单、光电转换效率高、生产成本低的光伏组件背板，这种背板同时还具有高反射率、高水汽阻隔性、高粘结性、高耐热氧老化性和优秀的户外耐候性。本发明的晶硅光伏组件背板具有较高反射率的同时生产工艺简单、生产成本较低，从而可以满足光伏组件对提高光电转换效率的要求，又能降低组件制作成本。
附图说明
为了更清楚地说明本发明的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为根据本发明实施例的一种晶硅光伏组件背板的结构示意图。
其中，
1、耐候层；2、聚合物基膜层；3、高反射微发泡层；30、微孔。
具体实施方式
下面对本发明的较佳实施例进行详细阐述，以使本发明的优点和特征能更易于被本领域的技术人员理解。
图1示出了一种晶硅光伏组件背板。参照图1所示，该晶硅光伏组件背板包括由层叠的耐候层1、聚合物基膜层2及高反射微发泡层3组成。其中，在装有该晶硅光伏组件背板的光伏组件中，耐候层1位于外侧而暴露于外界空气中，高反射微发泡层3位于最内侧而与光伏组件的封装胶膜接触。高反射微发泡层3中具有多个微孔30，通过高反射微发泡原料经过物理发泡和/或化学发泡，再经过选自热固化、光固化、辐射固化及微波固化中的一种或多种方式的组合定型后形成。通过高反射微发泡层3内部的微孔结构，极大地增加了背板的反射率。
耐候层1的厚度为10～100μm，为PTFE膜或为由100重量份的氟碳树脂、1～50重量份的无机填料、0～20重量份的颜料、1～10重量份的固化剂及0.01～1重量份的催化剂组成。其中，无机填料选自玻纤、云母粉、硫酸钡、滑石粉、金属氧化物、瓷粉、蒙脱土、碳酸钙、沸石、分子筛活化粉、介孔二氧化硅、空心玻璃微球、空心陶瓷微球中的一种或多种的组合；颜料选自二氧化钛、铅白、氧化锌、锌钡白、硫化锌、炭黑、氧化铁黑、铜铬黑、锰铁黑、铁铬黑、铬黄、镉黄、氧化铁黄、透明铁黄、氧化铁红、透明铁红、钼铬红、红丹、镉红、氧化铁棕、群青、钴蓝、铁蓝、氧化铬绿、钴绿、铅铬绿、有机颜料中的一种或多种的组合；固化剂选自乙二胺、乙二撑三胺、异氟尔酮二胺、双(4-胺基环己基)甲烷、六亚甲基二异氰酸酯三聚体、异氟尔酮二异氰酸酯三聚体中的一种或多种的组合；催化剂选自钛酸四丁酯、异辛酸钴、氧化单丁基锡、二月桂酸二丁基锡中的一种或多种的组合。
聚合物基膜层2的厚度为10～500μm，为PET膜或为由100重量份的PET、0～50重量份的无机颜料、0.1～10重量份的水解稳定剂及0.001～0.1重量份的抗热氧老化剂组成。其中，无机颜料选自玻纤、云母粉、硫酸钡、滑石粉、金属氧化物、二氧化钛、铅白、氧化锌、锌钡白中的一种或多种的组合；水解稳定剂选自单体碳化二亚胺类水解稳定剂、噁唑啉类化合物水解稳定剂、环氧化合物类水解稳定剂中的一种或多种的组合；抗热氧老化剂选自2,2-亚甲基-双-(4-甲基-6-叔丁基)苯酚、1,3,5-三(4-叔丁基-3-羟基-2,6-二甲基苯甲基)、3,5-二叔丁基-4-羟基-苯甲酸十六烷基酯、二硬酯基季戊四醇二亚磷酸酯、双酚A双 (二苯基磷酸酯)中的一种或多种的组合。
高反射微发泡层3的厚度为30～100μm，由100重量份的树脂、0.001～10重量份的发泡剂、0～30重量份的无机填料、1～30重量份的反射填料、0.1～5重量份的硅烷偶联剂、0.01～5 重量份的交联剂、0.001～1重量份的抗热氧老化剂、0.001～1重量份的光稳定剂及0.001～1 重量份的紫外吸收剂组成。
以下各实施例中，未明确示出的比例均未质量百分比。
实施例1
本实施例中的晶硅光伏组件背板采用如图1所示的结构，其中，聚合物基膜层2为100μm厚的PET膜；耐候层1为贴合在PET膜外侧表面的PTFE膜，厚度为100μm；高反射微发泡层3通过胶黏剂贴合在PET膜的内侧表面，厚度为50μm。高反射微发泡层3 所用树脂为聚乙烯树脂，填料为10％的钛白粉(杜邦)，所用紫外吸收剂为0.1％的2-羟基-4-4-甲氧基-2’-羧基二苯甲酮，所用硅烷偶联剂为0.2％的γ-缩水甘油醚氧丙基三甲氧基硅烷，所用交联剂为0.1％的过氧化丁基异丙苯，所用发泡方式为超临界二氧化碳发泡，采用220℃，10s的热固化条件来稳定泡孔结构，所用胶黏剂为聚氨酯类胶黏剂。所得背板的性能见表1。
实施例2
本实施例中的晶硅光伏组件背板采用如图1所示的结构，其中，聚合物基膜层2为100μm厚的PET膜；耐候层1为贴合在PET膜外侧表面的PTFE膜，厚度为100μm；高反射微发泡层3通过胶黏剂贴合在PET膜的内侧表面，厚度为50μm。高反射微发泡层3 所用树脂为聚乙烯树脂，填料为10％的钛白粉(杜邦)，所用紫外吸收剂为0.1％的2-羟基-4-4-甲氧基-2’-羧基二苯甲酮，所用硅烷偶联剂为0.2％的γ-缩水甘油醚氧丙基三甲氧基硅烷，所用交联剂为0.1％的过氧化丁基异丙苯，所用发泡方式为超临界二氧化碳发泡，采用辐照固化作用10s之后来稳定泡孔结构，所用胶黏剂为丙烯酸类胶黏剂。所得背板的性能见表1。
实施例3
本实施例中的晶硅光伏组件背板采用如图1所示的结构，其中，聚合物基膜层2为100μm厚的PET膜；耐候层1为贴合在PET膜外侧表面的PTFE膜，厚度为100μm；高反射微发泡层3通过胶黏剂贴合在PET膜的内侧表面，厚度为50μm。高反射微发泡层3 所用树脂为聚乙烯树脂和聚丙烯树脂的混合物，填料为10％的钛白粉(杜邦)，所用紫外吸收剂为0.1％的2-羟基-4-4-甲氧基-2’-羧基二苯甲酮，所用硅烷偶联剂为0.2％的γ-缩水甘油醚氧丙基三甲氧基硅烷，所用交联剂为0.1％的过氧化丁基异丙苯，所用发泡方式为超临界二氧化碳发泡，采用辐照固化作用10s之后来稳定泡孔结构，所用胶黏剂为聚氨酯类胶黏剂。所得背板的性能见表1。
实施例4
本实施例中的晶硅光伏组件背板采用如图1所示的结构，其中，聚合物基膜层2为100μm厚的PET膜；耐候层1为贴合在PET膜外侧表面的PTFE膜，厚度为100μm；高反射微发泡层3通过胶黏剂贴合在PET膜的内侧表面，厚度为50μm。高反射微发泡层所用树脂为聚乙烯树脂，填料为10％的钛白粉(杜邦)，所用紫外吸收剂为0.1％的2-羟基-4-4- 甲氧基-2’-羧基二苯甲酮，所用硅烷偶联剂为0.2％的γ-缩水甘油醚氧丙基三甲氧基硅烷，所用交联剂为0.1％的过氧化丁基异丙苯，所用发泡方式为PS微球进行发泡，采用辐照固化作用10s之后来稳定泡孔结构，所用胶黏剂为丙烯酸类胶黏剂。所得背板的性能见表1。
实施例5
本实施例中的晶硅光伏组件背板采用如图1所示的结构，其中，聚合物基膜层2为100μm厚的PET膜；耐候层1为贴合在PET膜外侧表面的PTFE膜，厚度为100μm；高反射微发泡层3通过胶黏剂贴合在PET膜的内侧表面，厚度为80μm。高反射微发泡层3 所用树脂为聚乙烯树脂，填料为10％的钛白粉(杜邦)，所用紫外吸收剂为0.1％的2-羟基-4-4-甲氧基-2’-羧基二苯甲酮，所用硅烷偶联剂为0.2％的γ-缩水甘油醚氧丙基三甲氧基硅烷，所用交联剂为0.1％的过氧化丁基异丙苯，所用发泡方式为PS微球进行发泡，采用紫外光固化作用200s之后来稳定泡孔结构，所用胶黏剂为丙烯酸类胶黏剂。所得背板的性能见表1。
实施例6
本实施例中的晶硅光伏组件背板采用如图1所示的结构，其中，聚合物基膜层2为100μm厚的PET膜；耐候层1为贴合在PET膜外侧表面的PTFE膜，厚度为100μm；高反射微发泡层3通过胶黏剂贴合在PET膜的内侧表面，厚度为30μm。高反射微发泡层3 所用树脂为聚乙烯树脂，填料为10％的钛白粉(杜邦)，所用紫外吸收剂为0.1％的2-羟基-4-4-甲氧基-2’-羧基二苯甲酮，所用硅烷偶联剂为0.2％的γ-缩水甘油醚氧丙基三甲氧基硅烷，所用交联剂为0.1％的过氧化丁基异丙苯，所用发泡方式为PS微球进行发泡，不采用任何定型方式。所用胶黏剂为丙烯酸类胶黏剂。所得背板的性能见表1。
对比例1
市场购得250微米厚度的CPO结构的光伏背板。
实施例1-6以及对比例1的背板的性能指标通过以下方法测定：
1、光反射率
按照GB/T 13452.3-92标准设计的反射率测定仪进行测试。
2、与EVA的剥离强度
按照GB/T 31034-2014进行背板与EVA 180°剥离强度测试。
3、恒定耐湿热老化性能
按照标准GB/T 2423.3《高低温湿热试验方法》
试验条件：﹢85℃，相对湿度85％，3000h。
表1、背板的性能参数
上述实施例只为说明本发明的技术构思及特点，是一种优选的实施例，其目的在于熟悉此项技术的人士能够了解本发明的内容并据以实施，并不能以此限定本发明的保护范围。凡根据本发明的精神实质所作的等效变换或修饰，都应涵盖在本发明的保护范围之内。
Claims (14)
1.一种晶硅光伏组件背板，包括依次层叠的耐候层、聚合物基膜层及高反射微发泡层，其特征在于：所述高反射微发泡层中具有微孔，所述高反射微发泡层由高反射微发泡原料经过物理发泡和/或化学发泡后，再经过选自热固化、光固化、辐射固化及微波固化中的一种或多种方式的组合定型后形成。
2.根据权利要求1所述的晶硅光伏组件背板，其特征在于：所述热固化条件为温度80～250℃，时间5～300s；所述光固化条件为紫外光固化，时间1～300s；所述辐射固化条件为电子辐射，时间5～300s；所述微波固化条件为电磁波固化，时间5～300s。
3.根据权利要求1所述的晶硅光伏组件背板，其特征在于：所述高反射微发泡原料包括90～100重量份的树脂、0.001～10重量份的发泡剂、0～30重量份的无机填料及1～30重量份的反射填料。
4.根据权利要求3所述的晶硅光伏组件背板，其特征在于：所述树脂为聚合物或聚合物的混合物，所述聚合物的单体选自乙烯、丙烯、丁烯、戊烯、辛烯中的一种或多种的组合。
5.根据权利要求3所述的晶硅光伏组件背板，其特征在于：所述反射填料选自晶红石型钛白粉、热反射粉、红外陶瓷粉、分子筛活化粉、沸石、介孔二氧化硅、空心玻璃微球、空心陶瓷微球、SiO2气凝胶微粉、金属粉中的一种或多种的组合。
6.根据权利要求3所述的晶硅光伏组件背板，其特征在于：所述发泡剂包括发泡剂A和/或发泡剂B，所述发泡剂A选自AN类共聚物发泡微球、丙烯酸类共聚物发泡微球、聚苯乙烯共聚物发泡微球、超临界二氧化碳中的一种或多种的组合；所述发泡剂B选自偶氮二甲酰胺、2,2-偶氮二异丁腈、偶氮二甲酸二异丙酯、苯磺酰肼、3,3’-二磺酰肼二苯砜中的一种或多种的组合。
7.根据权利要求1所述的晶硅光伏组件背板，其特征在于：所述高反射微发泡层还包括硅烷偶联剂、交联剂、抗热氧老化剂、光稳定剂及紫外吸收剂中的一种或多种。
8.根据权利要求7所述的晶硅光伏组件背板，其特征在于：所述高反射微发泡层由90～100重量份的树脂、0.001～10重量份的发泡剂、0～30重量份的无机填料、1～30重量份的反射填料、0.1～5重量份的硅烷偶联剂、0.01～5重量份的交联剂、0.001～1重量份的抗热氧老化剂、0.001～1重量份的光稳定剂及0.001～1重量份的紫外吸收剂组成。
9.根据权利要求1所述的晶硅光伏组件背板，其特征在于：所述高反射微发泡层通过胶黏剂贴合在所述聚合物基膜层上。
10.根据权利要求1所述的晶硅光伏组件背板，其特征在于：所述高反射微发泡层的厚度为10～200μm，所述聚合物基膜层的厚度为100～500μm，所述耐候层的厚度为10～100μm。
11.根据权利要求1所述的晶硅光伏组件背板，其特征在于：所述聚合物基膜层为PET膜或包括90～100重量份的PET、0～50重量份的无机颜料、0.1～10重量份的水解稳定剂及0.001～0.1重量份的抗热氧老化剂。
12.根据权利要求1所述的晶硅光伏组件背板，其特征在于：所述耐候层为PTFE膜或包括90～100重量份的氟碳树脂、1～50重量份的无机填料、0～20重量份的颜料、1～10重量份的固化剂及0.01～1重量份的催化剂。
13.一种如权利要求1-12任一项所述的晶硅光伏组件背板的制备方法，其特征在于，所述制备方法包括高反射微发泡层的制备步骤，所述高反射微发泡层的制备步骤具体实施如下：将高反射微发泡原料混合后，进行物理发泡和/或化学发泡，再进行定型形成所述高反射微发泡层，定型方式为选自热固化、光固化、辐射固化及微波固化中的一种或多种方式的组合。
14.根据权利要求13所述的制备方法，其特征在于，所述制备方法还包括如下步骤：将所述高反射微发泡层通过胶黏剂贴合在聚合物基膜层上。
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