Research on Conduction Characteristics of Double-layered XLPE/EPDM with Different Interface States

doi:10.11985/2018.11.009

Abstract

Abstract:

In this paper, the conductivity of double-layered XLPE/EPDM with three interface conditions were measured at 30~90℃ and the measuring electric field is from 1kV/mm to 19kV/mm. The influence factors of electric field, interface and temperature on conduction characteristics of double-layered dielectrics were analyzed. The results show that the electric field dependence of the conductivity of the three double-layered dielectrics increases as the electric field increases. The temperature sensitivity of the hot-contact double-layered dielectric conductivity is stronger than that of the other two dielectrics with physical interface, which means the influence of temperature on the conductivity of chemical interface is greater than that of physical interface. Besides, the double-layered dielectric conductivity has a polar effect similar to PN junction and polar effect of the conductivity of hot-contact double-layered dielectric is opposite to that of the other two double-layered dielectrics, which manifests the interface condition largely affects conduction characteristics of double-layered dielectrics.

Key words: Cross-linked polyethylene, Ethylene-propylene-diene monomer, conductivity, temperature, interface

CLC Number:

TM215

Yi Shuhui,Wang Yalin,Wu Jiandong,Yin Yi. Research on Conduction Characteristics of Double-layered XLPE/EPDM with Different Interface States[J]. Journal of Electrical Engineering, 2018, 13(11): 71-78.

Figures/Tables 11

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References 12

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双层介质接触方式	温度 /℃	斜率				阈值电场/(kV/mm)
		XLPE(-)		XLPE(+)		XLPE(-)	XLPE(+)
		J₁	J₂	J₁	J₂	E	E
直接接触	30	1.13	2.26	1.19	2.43	8.20	7.24
	50	1.37	2.44	1.57	2.93	7.19	8.26
	70	1.43	2.16	1.48	2.12	7.59	6.21
	90	1.58	2.03	1.97	1.58	7.18	8.28
硅脂接触	30	0.85	1.71	0.92	2.34	10.3	9.08
	50	0.81	1.93	0.92	2.52	8.66	7.12
	70	1.06	2.28	1.42	2.16	5.90	6.29
	90	1.39	2.34	1.43	1.94	3.59	3.35
热压接触	30	0.89	2.33	0.80	2.12	10.6	10.8
	50	1.17	2.25	0.93	2.86	9.90	10.2
	70	1.22	2.07	1.35	1.94	4.69	5.42
	90	1.62	2.24	1.34	1.92	3.73	4.03

类型	电场极性	电场强度 /(kV/mm)	活化能 ?/eV
直接接触式双层 XLPE/EPDM	-/XLPE/EPDM/+	3	0.87
		10	0.95
		19	0.91
	-/EPDM/XLPE/+	3	1.10
		10	1.14
		19	1.10
硅脂接触式双层 XLPE/EPDM	-/XLPE/EPDM/+	3	0.93
		10	1.09
		19	1.14
	-/EPDM/XLPE/+	3	0.95
		10	1.02
		19	0.96
热压接触式双层 XLPE/EPDM	-/XLPE/EPDM/+	3	1.32
		10	1.27
		19	1.39
	-/EPDM/XLPE/+	3	1.08
		10	1.18
		19	1.19

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