Abstract: An extruded part comprising a substrate comprising at least one thermoplastic polymer, and a fire-retardant made of a fire-retardant material coating the substrate so that the external surface of the part exclusively consists of said fire-retardant material, wherein the fire-retardant layer adheres to the substrate, the fire-retardant material comprises a polyolefin and a non-halogenated fire-retardant compound, and the substrate comprises a mixture of a polyolefin and of at least one thermoplastic biopolymer and/or of at least one thermoplastic polymer, and an agent for compatibilization of the thermoplastic biopolymer and/or of the thermoplastic polymer with the polyolefin. A method for preparing said part by co-extrusion. Said part may notably be selected from among parts intended for handling and/or protecting cables and cable systems, such as trunkings and cable paths.

Abstract: An integrated device for monitoring an electrically insulating part, the device having an optic fiber that includes at least one Bragg grating, the electrically insulating part being a composite material with a thermosetting matrix, and the optic fiber including a polyimide mechanical protection sleeve made. The device is integrated into an electrically insulating part or an electrically insulating enclosure. The invention also includes a method for manufacturing the device including positioning in a mold part of an optic fiber that includes at least one Bragg grating, and molding of the electrically insulating part.

Abstract: An integrated device for monitoring an electrically insulating part comprising an optic fiber in which at least one Bragg grating is formed, the electrically insulating part being made from a composite material with a thermosetting matrix, and the optic fiber comprising a mechanical protection sleeve made from polyimide material. An electrically insulating part or an electrically insulating enclosure in which the foregoing device is integrated. A method for manufacturing the foregoing device comprising positioning of a part of an optic fiber in which at least one Bragg grating is formed in a mold to form the electrically insulating part, and molding of the electrically insulating part.

Abstract: A composite composition for injection moulding comprising: an organic matrix, between 5 and 15% in weight of reinforcing fibers, and solid particles comprising more than 5% in weight of beads and fire-resistant mineral particles 50% in weight whereof present a distribution function of equivalent diameters comprising at least two modes. A method for producing 100 parts in weight of the composition comprising: preparation of an organic matrix, adding and mixing of 5 to 15 parts in weight of reinforcing fibers, and adding and mixing of solid particles comprising fire-resistant mineral particles and more than 5 parts in weight of beads. A part obtained by injection and by moulding of the composition.