一种紫外截止型POE光伏封装胶膜的制备与性能研究  

Preparation and properties of an ultraviolet cut⁃off POE photovoltaic encapsulation film

作　　者：何和智 熊华威 赖文 HE Hezhi;XIONG Huawei;LAI Wen(Guangdong Key Laboratory of Advanced Polymer Manufacturing Technology and Equipment,Key Laboratory of Polymer Molding and Processing Engineering of Ministry of Education,School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510000,China)

机构地区：[1]华南理工大学机械与汽车工程学院,聚合物成型加工工程教育部重点实验室,广东省高分子先进制造技术及装备重点实验室,广州510000

出　　处：《中国塑料》2025年第4期1-7,共7页China Plastics

摘　　要：本研究采用氢化烃类树脂(H-HCR)与聚烯烃弹性体(POE)熔融共混,并添加过氧化二异丙苯(DCP)与3,5-二叔丁基-4-羟基苯甲酸十六酯(UV2908)作为交联剂和紫外吸收剂,制备一种高体积电阻的紫外截止型光伏封装胶膜。随着H-HCR含量的增加,POE胶膜在紫外光区(250~380 nm)的透光率明显降低,同时其在可见光/近红外区(380~1 100 nm)具有较高透光率,而UV2908在250~292 nm范围有较强的紫外截止性能,两者能够协同阻挡紫外线进入光伏组件,从而制备出高紫外截止功能的光伏胶膜。同时复合材料的力学性能和体积电阻率均有明显增强,体积电阻率在H-HCR含量为15%(质量分数,下同)的组分中到达最高值。当POE/H-HCR/DCP/UV2908共混物的配比为85/15/1.5/0.2时,复合材料在可见光/近红外区的平均透过率和紫外截止波长为91.6%和284 nm,而拉伸强度、断裂伸长率、体积电阻率分别能达到20.1 MPa、904%和5.9×10^(15)Ω·cm,该复合材料既具有较好的体积电阻和力学性能,又具有优异的紫外截止性能。In this study,hydrogenated hydrocarbon resin(H-HCR)was melt blended with POE using dicumyl peroxide(DCP)as a crosslinking agent and hexadecyl 3,5-di-tert-butyl-4-hydroxy-benzoate(UV2908)as a UV absorbers for fab-ricating a UV cut-off PV encapsulation film with high volume resistance.The transmittance of the blending films in the UV region(250~380 nm)was significantly reduced with an increase in the H-HCR content,and its high transmittance in the visible/near-infrared region of 380~1100 nm was maintained.Meanwhile,UV2908 exhibited excellent UV cut-off performance in the range of 250~292 nm.The two components could generate a synergistic effect to prevent UV from entering PV modules,resulting in the formation of a PV encapsulation film with a high UV cut-off function.Mean-while,the mechanical properties and volume resistivity of the blending films were significantly enhanced,and their vol-ume resistivity reached the highest value at an H-HCR content of 15 wt%.When the POE/H-HCR/DCP/UV2908 mass ratio was 85/15/1.5/0.2,the average transmittance and UV cut-off wavelength of the blending films in the visible/near-infrared region are 91.6%and 284 nm,respectively.Their tensile strength,elongation at break and volume resis-tivity reached 20.1 MPa,904%and 5.9×10^(15)Ω·cm,respectively.The blending materials demonstrated not only good volume resistivity and mechanical properties but also excellent UV cut-off performance.

关 键 词：光伏胶膜 高透光率 紫外截止 体积电阻率 复合材料 

分 类 号：TQ334.2[化学工程—橡胶工业]