茂金属催化剂制备LDPE薄膜的击穿与空间电荷

ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132) Pub Date : 1998-06-22 DOI:10.1109/ICSD.1998.709331

T. Mori, R. Ishii, C. Banmongkol, T. Mizutani, M. Ishioka

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引用次数: 5

摘要

聚乙烯(PE)由于其优异的电气性能和机械性能，被广泛用作电力电缆的电绝缘材料。采用高压法制备的低密度聚乙烯(LDPE)作为电力电缆的绝缘聚合物得到了广泛的应用。本文研究了以茂金属催化剂(m-LDPE)为电绝缘材料制备的新型LDPE的性能。m-LDPE比LDPE具有更窄的组成和分子量分布。比较了m-LDPE在90/spl度/C下的高场电性能。此外，还讨论了预应力效应和空间电荷对击穿强度的影响。

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Breakdown and space charge of LDPE films prepared using metallocene catalyst

Polyethylene (PE) has been widely used as electrical insulation for power cables because of its excellent electrical and mechanical properties. Low density PE (LDPE) prepared using a high pressure process has been widely used as insulating polymer of power cables. In this paper, the authors have investigated the performance of new LDPE prepared using metallocene catalyst (m-LDPE) as electrical insulating material. m-LDPE has narrower composition and molecular-weight distributions than LDPE. High-field electrical properties of m-LDPE at 90/spl deg/C were compared with those of the other LDPEs. In addition, the prestress effect and the effect of space charge on breakdown strength were discussed.

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ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132)

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