功能填料对乙烯-醋酸乙烯共聚物(EVA)的复合改性及性能  

Modification of Ethylene-vinyl Acetate Copolymer Compound with Functional Fillers and Its Performance

作　　者：邹海波 李宾 袁晓[1] 柳翠[1] 沈春银[3] 戴干策[3] ZOU Haibo;LI Bin;YUAN Xiao;LIU Cui;SHEN Chunyin;DAI Gance(School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China;School of Mechanical and Power Engineering,East China University of Science and Technology,Shanghai 200237,China;State Key Laboratory of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China)

机构地区：[1]华东理工大学材料科学与工程学院,上海200237 [2]华东理工大学机械与动力工程学院,上海200237 [3]华东理工大学化学工程联合国家重点实验室聚合物加工研究室,上海200237

出　　处：《材料科学与工程学报》2020年第6期928-933,1013,共7页Journal of Materials Science and Engineering

基　　金：上海市科技创新计划资助项目(17DZ1201102)。

摘　　要：采用氧化镁(MgO),碳化硅(SiC)和氮化硼(BN)为功能填料对乙烯-醋酸乙烯共聚物(EVA)进行功能复合改性,以制备高性能光伏封装胶膜。研究了功能填料对EVA胶膜的剥离强度、力学性能、凝胶含量、热导率和耐老化等性能的影响。研究结果表明:在适当填充量下,三种功能填料中MgO复合改性的EVA胶膜封装性能最好,导热性能和抗老化性能也最优。采用傅里叶变换红外光谱仪(FTIR)研究了功能填料提高EVA封装材料耐老化的机理,发现产生乙酸是EVA胶膜加速老化的主要因素,而功能填料对EVA胶膜老化具有抑制作用。High-performance solar encapsulation film was prepared by modifying ethylene-vinyl acetate copolymer(EVA)with Magnesium oxide(MgO),silicon carbide(SiC)and boron nitride(BN)as thermally conductive fillers.The influence of thermal conductive filler on the peel strength,mechanical properties,gel content,thermal conductivity and aging resistance of the EVA composite film were investigated.The results showed that the MgO-filled film has the best thermal conductivity,good packaging performance and strong anti-aging performance among the three modified films.Fourier transform infrared(FTIR)were used to investigate the aging mechanism of EVA packaging materials.It was found that acetic acid is the main reason for accelerating aging of the EVA film,and the thermal conductive filler has an inhibitory effect on the production of acetic acid in the EVA film.

关 键 词：功能填料 乙烯-醋酸乙烯共聚物 复合改性 耐老化性能 老化机理 

分 类 号：TB33[一般工业技术—材料科学与工程]