NanoTiO 2 /epoxy resin composites, a kind of dielectric materials with excellent thermal, mechanical and electrical properties, has extensive promise in the insulation area of power system. Although the semiconductor property of TiO 2 filler can suppress the electric field mutations in the epoxy insulation devices, the doping of TiO 2 will have bad influence on the charge transmission, thus weakening the surface insulation. To solve this problem, filler fluorination with dielectric barrier discharge (DBD) plasma and chemical methods were designed to modify the TiO 2 filler. The effects of two fluorination methods on the micro-structures, electrical parameters, and insulation properties of the materials were studied. The results have shown that both DBD plasma and chemical fluorination methods can effectively introduce fluorine into TiO 2 filler and its epoxy composites, decreasing its dielectric constant and volume resistivity. Th...

中文翻译：

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纳米TiO 2 / ER复合材料的填料氟化及其表面绝缘性能：电介质阻挡放电与化学溶液氟化的比较

纳米TiO 2 /环氧树脂复合材料是一种具有优异的热，机械和电性能的介电材料，在电力系统的绝缘领域具有广阔的前景。尽管TiO 2填料的半导体特性可以抑制环氧绝缘器件中的电场突变，但是TiO 2的掺杂将对电荷传输产生不良影响，从而削弱表面绝缘性。为了解决该问题，设计了具有介电势垒放电（DBD）等离子体的填料氟化和化学方法以改性TiO 2填料。研究了两种氟化方法对材料的微观结构，电学参数和绝缘性能的影响。结果表明，DBD等离子体和化学氟化方法都可以有效地将氟引入TiO 2填料及其环氧复合材料中，从而降低其介电常数和体积电阻率。那个...