Title :
Effect of copolymerization on electrical and water trees of polyethylene
Author :
Nawata, Masahito ; Kawamura, Hideaki ; Ishino, Iwao ; Ieda, Masayuki
Author_Institution :
Dept. of Electr. & Electron. Eng., Meijo Univ., Nagoya, Japan
Abstract :
Electrical- and water-treeing breakdown phenomena were investigated on polyethylene copolymerized with various monomers. The resistance to electrical treeing in copolymerized specimens was evaluated according to the tree-inception voltages. The AC-tree-inception voltage decreased with increase in halogen atom content in the monomers. The resistance to water treeing in copolymerized specimens was evaluated according to the growth of water trees that arose from the tip of a needle-like water electrode. The growth of water treeing decreased with increase in halogen atom content in the monomers. Halogen atoms which were copolymerized in polyethylene improved the AC-electric-tree resistance and the water-tree resistance
Keywords :
electric breakdown of solids; halogens; materials testing; organic insulating materials; polymer blends; AC-electric-tree resistance; copolymerized specimens; copolymers; electrical treeing breakdown phenomena; electrical trees; halogen atom content; needle electrodes; needle-plane electrodes; polyethylene; tree-inception voltages; water trees; water-tree resistance; water-treeing breakdown phenomena; Dielectrics and electrical insulation; Electric breakdown; Electric resistance; Electrodes; Needles; Organic materials; Polyethylene; Polymers; Trees - insulation; Voltage;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1991., Proceedings of the 3rd International Conference on
Conference_Location :
Tokyo
Print_ISBN :
0-87942-568-7
DOI :
10.1109/ICPADM.1991.172138
