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Properties of polyethylene blend tested as a non‐cross‐linked insulating material for power cable
Author(s) -
Tamura Hiroki,
Ono Hironaga,
Ikeda Masaaki,
Yamamoto Yoshimi,
Ohki Yoshimichi
Publication year - 2005
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.20197
Subject(s) - materials science , polyethylene , composite material , melting point , impulse (physics) , dielectric , sizing , optoelectronics , art , visual arts , physics , quantum mechanics
From viewpoints of environmental protection and reduction in manufacturing costs, it is desirable to use non‐cross‐linked polyethylene as an insulating material for power cables. A new type of polymerized polyethylene using a single‐site catalyst has an advantage of its high melting point, but its processability is very poor because of its high viscosity. Therefore, blends of this polyethylene and conventional low‐density polyethylene with different blending ratios are examined in this research. We found that the blend with a blending ratio of 1:1 has an appropriate melt tension and adequate viscosity at a shear rate suitable for cable manufacturing. Furthermore, the blend has a superior thermal property and a high dielectric strength for both DC and impulse voltages. © 2005 Wiley Periodicals, Inc. Electr Eng Jpn, 153(1): 1–8, 2005; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.20197