Fig. 1. TSDC testing process.热刺激电流测试过程

Fig. 2. Micro-IR spectroscopy of LDPE and LDPE-5 specimens: (a) LDPE; (b) LDPE-5.LDPE及LDPE-5显微红外　(a) LDPE显微红外; (b) LDPE-5显微红外

Fig. 3. SEM images of phenolphthalein modified LDPE specimens.酚酞改性试样的SEM图片

Fig. 4. DSC curves of phenolphthalein modified LDPE specimens.酚酞改性试样的DSC曲线

Fig. 5. Influence of phenolphthalein modification on crystallization behavior of LDPE.酚酞掺杂对LDPE结晶行为的影响

Fig. 6. TSDC curves of specimens.TSDC曲线

Fig. 7. Relationship between spherulite size and trap level of LDPE.LDPE球晶尺寸与陷阱深度之间的关系

Fig. 8. Relationship between crystallinity and trap density of LDPE.LDPE结晶度与陷阱电荷量(陷阱密度)之间的关系

Fig. 9. Relationship between trap parameters and surface flashover performance: (a) Trap depth, trap density and surface flashover voltage; (b) trap and surface flashover voltage.陷阱参数与真空沿面闪络电压之间的关系　(a)陷阱深度、陷阱密度与闪络电压的关系; (b)陷阱对直流闪络电压的影响