Thermoplastic compositions are described that exhibit heat stability in addition to flexibility. Methods for forming the thermoplastic compositions are also described. The compositions include a polyarylene sulfide, an impact modifier and a heat stabilizer. The composition includes the impact modifier in a relatively large amount in combination with the heat stabilizer to provide long term heat stability to the composition and products formed therefrom such as coated wires and cables.

An electric wire includes a conductor, and a cover layer that covers an outer surface of the conductor. The cover layer includes a polyolefin-based resin and a biomass material. A content percentage of the biomass material in the polyolefin-based resin and the biomass material is 45% by mass or less.

An electrical insulating material is described herein. The electrical insulating material comprises an insulating core layer and at least one cured epoxy layer coated on a first major surface of the insulating core layer. In some aspects, the exemplary electrical insulating material can further include a second cured epoxy layer coated on a second major surface of the insulating core layer.

The present invention relates to compositions comprising at least one thermoplastic polyurethane TPU-1 based on an aliphatic diisocyanate, at least one metal hydroxide and at least one phosphorus-containing flame retardant, especially those compositions which further comprise at least one thermoplastic polyurethane TPU-2 based on an aromatic diisocyanate. The present invention further relates to the use of such compositions for production of cable sheaths.

The present disclosure relates to insulation. Teachings thereof may be embodied in a solid insulation material, especially in tape form, the use thereof in a vacuum impregnation process and to an insulation system produced therewith, and also an electrical machine comprising the insulation system, especially for the medium- and high-voltage sector, namely for medium- and high-voltage machines, especially rotating electrical machines in the medium- and high-voltage sector, and to semifinished products for electrical switchgear. For example a solid insulation material with an anhydride-free impregnating agent may include: a carrier; a barrier material; a curing catalyst; and a tape adhesive. The curing catalyst and the tape adhesive are inert toward one another but react under the conditions of a vacuum impregnation process if combined with an anhydride-free impregnating agent having gelation times of 1 h to 15 h at impregnation temperature. The tape adhesive is free of oxirane groups and includes at least two free hydroxyl groups.

An object of the present invention is to provide an improved partial discharge-resistant electrical insulating resin composition that can inhibit deterioration of an insulator due to partial discharge. The partial discharge-resistant electrical insulating resin composition of the present invention comprises boehmite alumina and a resin.

A composite composition for forming a composite which can be used for potting electronics and/or electrics, in particular power electronics. To form a composite which is solid, in particular rigid, adhesive, in particular self-adhesive, thermally stable, and has a low coefficient of thermal expansion, high thermal conductivity and thermal diffusivity, and high thermal endurance, and protects and compressively stabilizes electronics and/or electrics and increases their lifespan and/or performance, the composite composition includes, relative to the total weight of the composite composition, 10 wt. % to 95 wt. % of at least one filler, and 1 wt. % to 15 wt. % of at least one silanol. A method for preparing a silanol composition; a corresponding silanol composition; a method for preparing the composite composition; a method for preparing a composite and/or a solid structure; a composite and/or a solid structure; and the use thereof, are also described.

An electric submersible pumping system includes a motor, a pump driven by the motor, and a cable that provides electrical power to the motor. The cable includes a conductor and an insulator surrounding the conductor. The insulator includes a first layer surrounding the conductor and a second layer surrounding the first layer. The insulator may include an H.sub.2S scavenger and an H.sub.2S reactant in the first or second layers surrounding the conductor. The cable optionally includes a sub-insulator layer that includes a metal or nitride coating applied directly to the conductor.

The present invention relates to an accessory for high-voltage direct-current (HVDC) energy cables comprising: at least one element made from a crosslinked elastomeric polymer material, and at least one scavenging layer comprising zeolite particles. The zeolite particles are able to scavenge, very efficiently and irreversibly, the by-products deriving from the cross-linking reaction, so as to avoid space charge accumulation in the element during the accessory lifespan. Moreover, the zeolite particles can prevent the crosslinking by-products present in the element of a non-degassed accessory from migrating towards the insulating layer of the energy cable on which the accessory is mounted.

A composite cable includes a first twisted-pair wire formed by twisting a pair of first electric wires, a second twisted-pair wire formed by twisting a pair of second electric wires, a pair of third electric wires arranged between the first and second twisted-pair wires in a circumferential direction, each third electric wire having a larger outer diameter than the first and second electric wires, and a tape member spirally wound around an assembled article that is formed by twisting the first twisted-pair wire, the second twisted-pair wire and the pair of third electric wires together. The two twisted-pair wires have the same twist direction, the twist direction of the two twisted-pair wires is different from a twist direction of the assembled article, and the twist direction of the assembled article is different from a winding direction of the tape member.