Browse > Article

Electrical Properties of Low Density Polyethylene Film by Superstructure Change  

Shin, Jong-Yeol (Department of Electrical Engineering, Kwangwoon University)
Shin, Hyun-Taek (Department of Electrical Engineering, Kwangwoon University)
Lee, Soo-Won (Department of Reailroad Electric Control Korea National Railroad College)
Hong, Jin-Woong (Department of Electrical Engineering, Kwangwoon University)
Publication Information
Journal of the Korean Society of Safety / v.17, no.4, 2002 , pp. 101-109 More about this Journal
Abstract
The electrical properties of polyethylene are changed by the superstructure. Such crystalline polymer as polyethylene or polypropylene changes crystallinity and products spherulite or trans-crystal when it is cooled slowly. In this study, after thermal treatment of LDPE at 100[${circ}C$], in silicone oil for an hour, we made specimens in order of slow cooling, water cooling, quenching according to cooling speed. Also, to study the influence of electrical properties due to the superstructure change, we analyzed physical properties and performed dielectric breakdown experiments using DC and impulse voltage Moreover we measured space charges in bulk using Laser Induced Pressure Pulse(LIPP) method. Trap level of specimen is 0.064[eV] at the low temperature region 0.31[eV] at the high temperature region in DC dielectric strength, 0.03[eV] at the low temperature region 0.0925[eV] at the high temperature region in impulse dielectric strength. As its result shows that the quantity of charges induced from the electrode surface increases with applied voltage time, and the distribution of space charges in samples increases the quantity of charges in proportion to applied voltage.
Keywords
crystalline polymer; DC and impulse dielectric breakdown; superstructure; Laser Induced Pressure Pulse;
Citations & Related Records
연도 인용수 순위
  • Reference
1 L. A. Dissado and J. C. Fothergill, 'Electricaldegradation and breakdown in polymers,' PeterReregrinus LTD, London, U.K., pp. 311-314, 1992
2 V. Compafi, M. Lopez-Lidon, A. Andrio, E.Riande, 'Transport Mechanism of Gases inAnnealed Linear Low Daisity Polyethylene Films,'Micnmolecules 1998, 31, 6984-6990, 1998
3 I. L. Hosier, A. S. VauUian, S. G. Swingler,'Structure-property relation in polyethylene blends: The effect of morphology on electrical breakdown strengh,' J. Mat Sci, Vol. 32, pp. 4523, 1997   DOI   ScienceOn
4 R. Nath and M M. Perlman ; 'Effect ofCiystallinty on Charge Storage in Polypropyleneand Polyethylene," IEEE Trans. Electr. Insul., Vol.24, No. 3, pp. 409-412, 1989   DOI   ScienceOn
5 T. Tanaka ; 'Optical Absorption and ElectricalConduction in Polyethylene,' Japan, J. Appl. Phys.,44(5), 143, 1973
6 F.W. Billneyer; 'Textbook of Polymer science,'John Wiley and Son, New Yoik pp. 229-261,1984
7 日本分析化學倉,'高分子分析ハンドブツグ,' 朝倉書店, pp. 24-27, 586-605, 1995
8 H. Fr$\ddot{o}$hlich, 'On the theory of dielectricbreakdown in solids,' Proc. Roy. Soc., A188, pp.521-541, 1946
9 H. J. wintle, 'Charge Motion and trapping in insulators : Surface and bulk efFects.' IEEE Trans,on DEI. Vol. 6, No. 1. Feb., 1999
10 M. Ikeda, Y. Umeshima, Y. Tanaka and T. Tanaka; 'Development of New Crosslinked Polyethylenefor DC Power Cable Insulator,' 1995 CEIDP, pp.403-406, 1996
11 S. Nagasaki, H. Matsubarb, S. Yamanouochi, M.Yamada, T. Matsuike and Fukunaga ;'Development of Water-Tiw-Retardant XLPECables,' IEEE Trans. Power Apparatus and Systems, Vol. PAS-103, pp. 536-544, 1984   DOI   ScienceOn
12 H. MIYAUCM, K. YAHAGI, 'ElectronicBreakdown in Polyethlene Film in RoomTemperature Range,' T. IEEJ. Vol. 92-A, No. 1,pp. 3645 (1972)
13 G. R. Greenway, A.S. Vaughan, S. M. Moody,'Moiphology and the electromechanical breakdownmodel in polyethylene,' 1999 conference onElectrical insulation and dielectric phenomena, pp.666-668, 1999
14 M. Nawata and H. Kawamura ; 'Effect of Additives on dc Treeing Breakdown inPolyethylene Under Divergent Fields,' IEEE Trans.Electr. Insul., Vol. 25, pp. 527-534, 1993   DOI   ScienceOn