Cable with fire-resistant, moisture-resistant coating

Details Cable with fire-resistant, moisture-resistant coating Cable with fire-resistant, moisture-resistant coating

H - Electricity

01

B

H01B 3/44 (2006.01) H01B 7/28 (2006.01) H01B 7/282 (2006.01) H01B 7/295 (2006.01)

Patent

CA 2283312

The present invention relates to an electrical cable, in particular for low- tension power transmission or for telecommunications, this cable comprising a coating which has fire-resistance properties and is capable of keeping its electrical insulation properties unchanged when said cable is in the presence of moisture. This cable comprises a metal conductor and a polymer coating consisting of a double layer in which both the layers which form the coating comprise a base polymer and an inorganic charge, and in which the innermost layer of the two also contains a predetermined amount of a coupling agent, in particular a polyolefin compound containing at least one unsaturation and at least one carboxyl group in the polymer chain.

La présente invention concerne un câble électrique, en particulier pour la transmission de puissance basse tension ou pour les télécommunications. Ce câble comprend un revêtement présentant des propriétés ignifuges et est capable de maintenir ses propriétés d'isolation électrique inaltérées lorsque ledit câble est en contact avec l'humidité. Ce câble comprend un conducteur métallique et un revêtement polymère comportant une double couche. Les deux couches formant le revêtement comprennent un polymère de base et une charge inorganique. La couche interne comprend aussi une quantité prédéterminée d'un agent de couplage, en particulier un composé de polyoléfine contenant au moins une insaturation et au moins un groupe carboxyle dans la chaîne polymère.

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