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高性能BaTiO3/PVDF介电复合材料及其薄膜电容器应用

, PP. 35-39

Keywords: 复合材料,BaTiO3,聚偏氟乙烯,介电性能,薄膜电容器,电容

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Abstract:

选用柔性高分子材料聚偏氟乙烯(PVDF)作为基体,纳米钛酸钡陶瓷(BaTiO3)作为填充相,采用简单的溶液共混以及流延工艺制备BaTiO3/PVDF薄膜。通过SEM观察了复合材料体系的微观结构,研究了BaTiO3/PVDF介电复合材料的介电性能。把所制备的BaTiO3/PVDF复合材料薄膜(70mm×30mm×25μm,电极面积:600mm2)加工成卷绕式薄膜电容器,研究了该电容器的电容、损耗、击穿电压以及温度稳定性等性能。结果表明,BaTiO3/PVDF复合材料具有良好的介电性能,其薄膜电容器性能优异,电容值为3.34nF,损耗低于0.03,在测试频率范围内保持稳定,击穿电压达到1.3kV,并且在100℃以内能保持良好的电容性能。

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