Insulated wire for high temperature use

Details Insulated wire for high temperature use Insulated wire for high temperature use

H - Electricity

01

B

H01B 7/02 (2006.01) B32B 15/02 (2006.01) H01B 3/10 (2006.01) H01B 7/29 (2006.01) H01B 7/295 (2006.01)

Patent

CA 2050339

Disclosed is an insulated wire which comprises a conductor, a first insulating metal oxide layer which is formed around the conductor, and a second insulating metal oxide layer, containing ceramics particles mixed by addition, which is formed around the first insulating metal oxide layer. The aforementioned insulating metal oxide layers can be formed by changing a precursor of a metal oxide to a ceramics state, using a method such as a sol-gel method or a thermal decomposition method. Further, the mixed ceramics particles are more preferably in the form of a fine plate. This insulated wire is excellent in flexibility, emits no gas, can maintain insulation even under a high temperature, and has a high breakdown voltage.

La présente invention vise un câble isolé comprenant un conducteur, une première couche isolante à base d'oxydes métalliques, formée autour du conducteur, et une seconde couche isolante à base d'oxydes métalliques auxquels on a mélangé des particules de céramique, formée autour de la première couche isolante. Ces couches isolantes peuvent être formées par transformation d'un précurseur d'un oxyde métallique en matière céramique au moyen d'une méthode sol-gel ou d'une méthode de décomposition thermique. La couche isolante comportant des particules céramiques se présente de préférence sous la forme d'une plaque mince. Ce type de câble isolé présente une grande flexibilité, une tension de rupture élevée, n'émet aucun gaz et conserve son isolant même sous hautes températures.

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