PVDF膜的紫外透过率影响因素及其对背板老化速度的影响  

Influencing Factors of UV-light Transmittance of PVDF Film and Effect on Aging Rate of PV Backsheet

作　　者：黄欢 周君 何甜甜 李建 周俊 石娜 Huang Huan;Zhou Jun;He Tiantian;Li Jian;Zhou Jun;Shi Na(Shanghai Huitian New Material Co.,Ltd,Shanghai 201616,China;Changzhou Huitian New Material Co.,Ltd,Changzhou 213166,China)

机构地区：[1]上海回天新材料有限公司,上海201616 [2]常州回天新材料有限公司,江苏常州213166

出　　处：《工程塑料应用》2018年第10期111-116,共6页Engineering Plastics Application

摘　　要：研究了光伏电池组件背板用聚偏氟乙烯(PVDF)膜配方中关键成分——钛白粉含量、PVDF树脂含量,紫外助剂种类,以及PVDF膜厚度对于PVDF膜产品的紫外线透过率的影响。研究发现,PVDF膜的紫外透过率指标严重影响了光伏背板在光老化环境中的寿命,紫外透过率大的PVDF膜制成的背板在30 kWh/m^2紫外辐照量下就会失效(也就相当于户外3～5年寿命),而紫外透过率在0.1%以下的PVDF膜制成的背板在210 kWh/m^2紫外辐照下性能基本不衰减(相当于户外25年以上寿命)。通过这些研究,为背板高可靠性研发、生产和选用提供了数据基础,可以为行业对于氟膜标准制定提供方法。The effects of the content of key ingredients in polyvinylidene fluoride(PVDF)film used in solar module backsheet,that is TiO2,and PVDF,types of UV agents,and film thickness on the UV light transmittance of PVDF film were investigated.The results show that UV transmittance can influence the lifetime of backsheet in UV aging environment.Backsheet with PVDF film of large UV transmittance would disable after only 30 kWh/m2 UV irradiation,while that of UV transmittance below 0.1%does not degrade almost under 210 kWh/m2 UV irradiation.These researches can provide specific data for high-reliability R&D,production and selection of backsheet,and can provide methodology and technique support for fluorocarbon film standard of PV industry.

关 键 词：光伏背板 聚偏氟乙烯膜 紫外线透过率 紫外老化 可靠性 

分 类 号：TQ324.8[化学工程—合成树脂塑料工业]