US 12,142,394 B2 · Electrical insulation material and manufacturing process

Electrical insulation material and manufacturing process

AssigneesSupergrid Institute, Centre National de la Recherche Scientifique (CNRS), Universite Claude Bernard Lyon 1, Institut National Des Sciences Appliquees De Lyon, Universite Jean Monnet Saint Etienne Saint

InventorsThibaut Lefort, Damien Bachellerie, Sébastien Pruvost, Jannick Duchet, Sébastien Livi

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Abstract

The invention relates to an electrically insulating composite material (1) comprising a polyepoxide matrix (2) of cycloaliphatic type or of diglycidyl ether type in a content of less than 40% by mass, from 20 to 75% by mass of one or several micrometric and/or mesometric filler(s) (3), and from 0.1 to 20% by mass of at least one ionic liquid (4), the masses being expressed relative to the total mass of the electrically insulating composite material (1). The invention also relates to a method for manufacturing such an electrically insulating composite material (1), as well as its use for an electrically insulating support (9) in a metal-enclosed substation (5).

Claims24

Dependent claims

An electrically insulating composite material formed from:

i) a polyepoxide matrix, said polyepoxide matrix being a cycloaliphatic polyepoxide matrix or a diglycidyl ether polyepoxide matrix, in a content of less than 40% by mass,
ii) from 20 to 75% by mass of one or several micrometric and/or mesometric filler,
iii) from 0.1 to 20% by mass of at least one ionic liquid,
the masses being expressed relative to the total mass of the electrically insulating composite material,
wherein the electrically insulating composite material has a volume electrical conductivity ranging from 10−18 to 10−12 S/m.

2 more elements

Dependencies are inferred from the claim text.