【摘要】 用高介电常数的甲基丙烯酸酯对两种可熔性氟塑料四氟乙烯-全氟(烷基乙烯基)醚共聚物(PFA)和四氟乙烯-六氟丙稀共聚物(FEP)的表面进行改性以改善其空间电荷的分布。用电声脉冲法(PEA)测量其空间电荷值,并与改性前相比较,分析了表面层的极性和介电常数对空间电荷形成和注入的影响。结果表明在表面处理前后空间电荷的分布有明显的不同,表面改性的试样基本没有注入电荷,说明高介电常数层可以有效抑制电荷的注入更多还原

【Abstract】 Space charge analysis in tetrafluoroethylene-perfluorothylene copolymer(PFA)and teˉtrafluoroethylene-hexafluoropropylene copolymer(FEP)were measured by pulsed electro-acoustic method(PEA).The results were compared with the results before surface coating.The effect of surface treatment on the space charge distributions in above samples are studied in this paper.The distributions of space charge in PFA and FEP before and after surface modification are obˉviously different.There is no charge injection in treated samples,which prove the high dielectric constant layer can suppress the charge injection effectively.更多还原