摘要
通过微乳液法制备了不同粒径的球状SiO2粒子,采用扫描电镜和X射线衍射表征发现其粒径分布均匀,且为无定形或微晶结构。将纳米球状SiO2粒子以原位合成方法加入聚对苯二甲酸乙二醇酯(聚酯PET)中,采用超声分散,制备有机-无机杂化聚酯薄膜,并测试其耐电晕性能,讨论了粒径、SiO2含量和PET薄膜厚度对耐电晕电压的影响。结果表明,纳米球状二氧化硅的引入,有机-无机网络结构的形成使薄膜内部形成反向电场,延缓了电晕老化,使相同厚度(250μm)的聚酯薄膜耐电晕电压性能提升20%左右,采用350μm厚度耐电晕PET开发的Tedler-PET-Tedler(TPT)复合背板在空气中的局部放电电压可达到1500V,能满足新型光伏组件的技术要求。
Spherical SiO2 particles with different size were prepared by micro-emulsion method and characterized by SEM and XRD. The results show that the particle size is uniformity and the crystalline form of SiO2 is amorphous or micrc^crystal. Spherical SiO2 powder was in-situ added to polyethylene glycol terephthalate（PET） by ultrasonic dispersion method. And the organic-inorganic hybrid polyester film was prepared. The corona.resistance of polyester- film was tested, and the effect of particle size, concentration of silicon dioxide nanoparticles and thickness of PET film on corona resistance was discussed. The results indicate that the introduction of nano-silicon dioxide is contributed to form organic-inorganic network structure. The reversed electric field is formed inside PET film and the corona aging is postponed, which significantly improves the corona resistance of polyester film. The partial discharge voltage increases 20% compared to unmodified PET film with the same thickness （250 μm）. The high partial discharge voltage of Tedler-PET-Tedler （TPT） structure requirements of new type photovoltaic module in air. hacksheet with 250 μm thickness PET film can meet the
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2017年第12期59-64,共6页
Polymer Materials Science & Engineering
关键词
聚对苯二甲酸乙二醇酯
薄膜
球状粒子
二氧化硅
耐电晕
polyethylene glycol terephthalate
film
spherical nanoparticles
silicon dioxide
corona-resist
