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Enhanced surface-insulating performance of EP composites by doping plasmafluorinated ZnO nanofiller
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作者 段祺君 宋岩泽 +3 位作者 邵帅 尹国华 阮浩鸥 谢庆 《Plasma Science and Technology》 SCIE EI CAS CSCD 2023年第10期37-48,共12页
The surface flashover of epoxy resin(EP) composites is a pivotal problem in the field of highvoltage insulation.The regulation of the interface between the filler and matrix is an effective means to suppress flashover... The surface flashover of epoxy resin(EP) composites is a pivotal problem in the field of highvoltage insulation.The regulation of the interface between the filler and matrix is an effective means to suppress flashover.In this work,nano ZnO was fluorinated and grafted using lowtemperature plasma technology,and the fluorinated filler was doped into EP to study the DC surface flashover performance of the composite.The results show that plasma fluorination can effectively inhibit the agglomeration by grafting –CFxgroups onto the surface of nano-ZnO particles.The fluorine-containing groups at the interface provide higher charge binding traps and enhance the insulation strength at the interface.At the same time,the interface bond cooperation caused by plasma treatment also promoted the accelerating effect of nano ZnO on charge dissipation.The two effects synergistically improve the surface flashover performance of epoxy composites.When the concentration of fluorinated ZnO filler is 20%,the flashover voltage has the highest increase,which is 31.52% higher than that of pure EP.In addition,fluorinated ZnO can effectively reduce the dielectric constant and dielectric loss of epoxy composites.The interface interaction mechanism was further analyzed using molecular dynamics simulation and density functional theory simulation. 展开更多
关键词 plasma fluorination ZnO nanofller epoxy resin surface flashover charge trap density functional theory(Some figures may appear in colour only in the online journal)
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Krein regularization of λφ~3 theory
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作者 B.Forghan 《Chinese Physics C》 SCIE CAS CSCD 2015年第6期30-33,共4页
In this paper, the one-loop self energy of λφ3 theory is calculated by using Krein regularization in four and six dimensions and the result, which is finite, is compared with the conventional result of λφ3 theory ... In this paper, the one-loop self energy of λφ3 theory is calculated by using Krein regularization in four and six dimensions and the result, which is finite, is compared with the conventional result of λφ3 theory in Hilbert space. The self energy is calculated in the one-loop approximation and the result is automatically regularized as a result of “Krein Regularization”. 展开更多
关键词 regularization theory automatically dimensions quantization appearance applying rotation similarity remove
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