纳米球状二氧化硅改善聚酯薄膜耐电晕性能

发布时间：2018-08-02 15:47

【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。
[Abstract]:Spherical SiO2 particles with different diameters were prepared by microemulsion method. Scanning electron microscopy and X-ray diffraction analysis showed that the particle size distribution was uniform and the particle size was amorphous or microcrystalline. Nano-spherical SiO2 particles were added into poly (ethylene terephthalate) (PET) by in-situ synthesis. The organic-inorganic hybrid polyester films were prepared by ultrasonic dispersion, and their corona resistance was tested. The effects of Sio _ 2 content and thickness of PET film on corona resistance voltage were discussed. The results show that with the introduction of nanometer spherical silica and the formation of organic-inorganic network structure, the reverse electric field is formed inside the film, the corona aging is delayed, and the corona resistance voltage performance of the same thickness (250 渭 m) polyester film is improved by about 20%. The partial discharge voltage of the Tedler-PET-Tedler (TPT) composite backplane developed by corona resistant PET with a thickness of 350 渭 m can reach 1500 V in air, which can meet the technical requirements of the new photovoltaic module.
【作者单位】：西安交通大学电气工程学院;国家绝缘材料工程技术研究中心;
【分类号】：TB383.2;TQ323.4

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