Systems and methods for forming insulation on magnet wire are provided. An extruder that includes one or more rotating screws may receive a thermoset polymeric material and process the thermoset polymeric material to increase its pressure and temperature. An extrusion crosshead assembly in fluid communication with the extruder may receive the thermoset polymeric material and press extrude the thermoset polymeric material as insulation onto a magnet wire. A curing device may then cure the extruded insulation material.

The invention discloses a carbon nanotube/polyetherimide/thermosetting resin dielectric composite and a preparation method therefor. 100 parts by weight of polyetherimide and 1-7 parts by weight of carbon nanotube are mixed uniformly in an Haake torque melt cavity to obtain a carbon nanotubes/polyetherimide composite; 20 parts of the carbon nanotube/polyetherimide composite are dissolved in 100-150 parts of dichloromethane, then the mixed solution is added in 100 parts of molten thermocurable thermosetting resin, mixing, and heat preserving, stirring are performed until a mixture is formed in a uniform state, and curing and post-treating are performed to obtain a carbon nanotube/thermosetting resin dielectric composite, wherein the substrate thereof has a typical reverse phase structure, while the carbon nanotubes are dispersed in a polyetherimide phase. The composite has a relatively low percolation threshold, a high dielectric constant and a low dielectric loss. The preparation method of the present invention has a simple process and is suitable for large-scale production.

Disclosed is a composition for a silica-based insulation layer including hydrogenated polysilazane or hydrogenated polysiloxzane, wherein a concentration of a cyclic compound having a weight average molecular weight of less than 400 is less than or equal to 1,200 ppm. The composition for a silica-based insulation layer may reduce a thickness distribution during formation of a silica-based insulation layer, and thereby film defects after chemical mechanical polishing (CMP) during a semiconductor manufacturing process may be reduced.

An insulated wire, having at least one foamed insulating layer composed of a thermosetting resin having bubbles, directly or indirectly on an outer periphery of a conductor, wherein the foamed insulating layer has a different bubble density in a thickness direction thereof; and a rotating electrical machine.

A cable for use in a remote control assembly includes a liner having a longitudinal axis along a length thereof and defining an interior. The cable includes a core element disposed and moveable within the interior and extending along the length. The cable additionally includes a sheath disposed about the liner along the length. The cable further includes a support layer mounted to and disposed between the liner and the sheath, with the support layer supporting the liner along the length, reinforcing the sheath along the length, reducing movement of the sheath with respect to the liner and vibrations caused during movement of the core element, and minimizing bending of the liner and the sheath about the longitudinal axis. The support layer is comprised of a resin material.

Methods for forming a graft copolymer of a poly(vinylidene fluoride)-based polymer and at least one type of electrically conductive polymer, wherein the electrically conductive polymer is grafted on the poly(vinylidene fluoride)-based polymer are provided. The methods comprise a) irradiating a poly(vinylidene fluoride)-based polymer with a stream of electrically charged particles; b) forming a solution comprising the irradiated poly(vinylidene fluoride)-based polymer, an electrically conductive monomer and an acid in a suitable solvent; and c) adding an oxidant to the solution to form the graft copolymer. Graft copolymers of a poly(vinylidene fluoride)-based polymer and at least one type of electrically conductive polymer, wherein the electrically conductive polymer is grafted on the poly(vinylidene fluoride)-based polymer, nanocomposite materials comprising the graft copolymer, and multilayer capacitors comprising the nanocomposite material are also provided.

Cellulose fibers are impregnated with polyethyleneimine so that the impregnation forms a type of network, which can reduce the specific resistance of the cellulose material owing to the electrical conductivity of the network. The cellulose material can thereby be advantageously adapted to use as electrical insulation of transformers, the cellulose material in this case being soaked in transformer oil. An adaptation of the specific resistance of the cellulose material to the specific resistance of the oil lead to improved dielectric strength of the transformer insulation. A method for impregnation of the cellulose material is described.

This invention provides a resin composition for preparing an allylphenol-maleimide copolymer used for a protective film for an electronic component including: (A) an allyl group-containing phenol compound having a rigid structure; (B) an N-aromatic maleimide group-containing compound having a rigid structure; and (C) an N-aliphatic maleimide group-containing compound having a flexible structure.

Systems and methods for forming insulation on magnet wire are provided. An extruder that includes one or more rotating screws may receive a plurality of ingredients for a polymeric insulation material and process the plurality of ingredients to facilitate polymerization of the polymeric insulation material within the extruder. An application assembly in fluid communication with the extruder may apply the polymeric insulation material onto a wire. A curing device may then cure the polymeric insulation material.

The invention relates to an insulation element (1) with low electrical conductivity for the electrical insulation of an electrotechnical component in the high voltage range. The insulation element (1) comprises artificial fibres (2) and electrically conductive particles (3) having an electrically non-conductive core (5) and an electrically conductive or semi-conductive cladding (6) surrounding the core (5). Moreover, the insulation element (1) comprises a cationic polymer (4).