A composition comprises, based on the total weight of the composition, 40 to 80 wt % of a polyetherimide; 10 to 50 wt % of talc; and 1 to 15 wt % of a polymer additive comprising a polyphthalamide, a poly(siloxane-etherimide) copolymer, aliphatic polyamide, or a combination comprising at least one of the foregoing; wherein the composition has a number of drops to tracking at 250 volts of greater than or equal to 50 drops determined according to ASTM D-3638-85.

A heat-resistant and oil-resistant insulated electric wire is mounted on a vehicle, and includes a conductor portion and an insulator covering a periphery of the conductor portion. The insulator is made of polyphenylene sulfide resin. The conductor portion includes a twisted wire formed by twisting a plurality of element wires. At least a part of the plurality of element wires includes a plated fiber. The plated fiber is formed of a high-strength fiber and metal plating surrounding a periphery of the high-strength fiber.

Provided is an article containing non-cellulosic nonwoven fabric layer between two non-cellulosic nonwoven paper layers wherein one or both of the nonwoven paper and nonwoven fabric are electrically insulating. At least some embodiments are flame retardant.

A resin composition for a wire covering material that is excellent in high-temperature oil resistance, wear resistance, and elongation, and an insulated wire and a wiring harness in which the resin composition for a wire covering material is used as the covering material contains a (A) polysulfone-based resin, a (B) aromatic polyester resin, a (C) polyester elastomer, and a (D) compound having a reactive functional group that reacts with one of a carboxyl group and a hydroxyl group, wherein the (D) component reacts with the (B) component or the (C) component to form a bond.

Polymeric compositions having a slip agent comprising a silicone and a fatty acid amide. Such polymeric compositions can exhibit lower coefficients of friction when compared to polymeric compositions containing either silicone or fatty acid amide alone. Such polymeric compositions are suitable for use in various articles of manufacture, including, for example, wire and cable jackets.

A rectangular insulated wire includes a rectangular conductor having a generally rectangular cross section, a thermosetting resin layer provided to cover the rectangular conductor, and a plurality of thermoplastic resin layers provided on the thermosetting resin layer. An adhesion strength between the thermosetting resin layer and the thermoplastic resin layer is 50 gf/mm to 100 gf/mm.

An insulated wire, containing at least one layer of an electrical wire coating, including an extrusion covering resin layer, on an outer periphery of a conductor, wherein the extrusion covering resin layer is composed of a mixed resin of a resin (A) and a resin (B) each having different relative permittivity, wherein the resin (A) is a specific polyallyletherketone resin selected from polyetheretherketone, or the like, wherein the resin (B) is a non-fluorine-based resin having lower relative permittivity at 200 C., than the resin (A), wherein a mixing mass ratio of the mixed resin {a mass of the resin (A):a mass of the resin (B)} is 90:10 to 51:49, and wherein a value of a ratio of the relative permittivity at 200 C. to the relative permittivity at 25 C. and 50% relative humidity; a coil; an electrical or electronic equipment; and a method of producing the insulated wire.

An insulated wire, having at least one layer as an insulation layer, on an outer periphery of a conductor, wherein at least one layer as the insulation layer is composed of a mixed resin of a crystalline resin (A) and a resin (B) having a glass transition temperature higher, by 30 C. or more, than a glass transition temperature of the crystalline resin (A), in which the glass transition temperature is measured by a thermomechanical analysis, and a mixing mass ratio of the mixed resin (a mass of the crystalline resin (A):a mass of the resin (B)) is 90;10 to 51;49; a coil; an electric or electronic equipment; and a method of producing the insulated wire.

Various embodiments of the teachings herein include an insulation system. An example includes a polymer blend in the form of a solid two-dimensional insulation material, a material for wire insulation by means of extrusion and/or an injection-molded and/or compression-molded article. The blend is resistant to partial discharges and at least partly replaces any mica content in the insulation system. The blend comprises at least three blend partners including at least one copolymer based on polyetherimide and siloxane blended with at least two high-temperature thermoplastics. At least of one the high-temperature thermoplastics is in semicrystalline form, such that spherulites are detectable in the polymer blend.

An insulated electric conductor with increased adhesion of an insulating coating includes an electric conductor, preferably made of copper or aluminum, with an insulating coating having either at least one insulating layer made of thermoplastic material, or the insulating layer and a plastic-containing intermediate layer, obtainable by a method in which the electric conductor is placed under a protective gas atmosphere and is bombarded with ions of the protective gas in a gas plasma in order to remove an oxide layer formed on a surface of the electric conductor and/or to increase the surface energy of the electric conductor, and subsequently either the at least one insulating layer or, in the case that the coating includes the plastic-containing intermediate layer, at least the plastic-containing intermediate layer is applied directly to the surface of the electric conductor under a protective gas atmosphere.