An object of the present invention is to provide an insulation sheet having high thermal conductivity in the in-plane direction.

The present invention provides an insulation sheet comprising insulating particles and a binder resin, wherein, for the entire cross-section of the sheet perpendicular to the in-plane direction, the insulation sheet contains 75 to 97% by area of the insulating particles, 3 to 25% by area of the binder resin, and 10% by area or less of the voids.

A bushing for a metal clad medium voltage switchgear includes a hollow body. The body is made of polyamide. A first end of the body connects to a compartment of the medium voltage switchgear. A second end of the body connects to a T-off and pin. A body portion extends from the first end of the body to the second end of the body. The body portion is circular shaped about an axis extending from the first end of the body to the second end of the body.

The present invention provides an electrically insulating resin composition comprising a polysulfone resin including a plurality of sulfonyl groups in the molecule and a polyamide resin, wherein the proportion of the polyamide resin is 1 to 45% by mass. The present invention also provides a laminate sheet obtained by bonding a plurality of sheet materials with a resin composition layer interposed therebetween, wherein the resin composition layer comprises a polysulfone resin including a plurality of sulfonyl groups in the molecule and a polyamide resin, and the proportion of the polyamide resin is 1 to 45% by mass.

Embodiments of a flame retardant composition are provided. The composition includes from 55% to 85% by weight of a blended matrix and from 15% to 45% by weight of a flame retardant package distributed within the blended matrix. The blended matrix includes a polyolefin component and a nitrogen-containing polymer component. In particular, the nitrogen-containing polymer component has a melting temperature of less than 240° C. The flame retardant package includes an acid source, a carbon source, a polyoxometalate ionic liquid, and a synergist. The flame retardant composition can be utilized in cables, such as fiber optic cables.

A structure for creating a sealed wire bundle includes a first adhesive material in the form of a circular or semi-circular shape. The first adhesive material has a first outer wall with first spoke arms extending inward from the first outer wall. The first adhesive material has a first viscosity. First wire receiving spaces are provided between the first spoke arms. Wires are positioned in the first wire receiving spaces. As heat is applied to the adhesive structure, the adhesive structure flows to fill voids between the plurality of wires to thereby seal the wires.

Magnet wire with corona resistant enamel insulation may include a conductor and a multi-layer insulation system formed around the conductor. The insulation system may include a basecoat formed from a first polymeric enamel insulation. A midcoat formed from a second polymeric enamel insulation may be formed around the basecoat, and the second polymeric enamel insulation may include a filler dispersed in a base polyimide material. The filler may include between 20 percent and 80 percent by weight of silica dioxide and between 20 and 80 percent by weight of titanium dioxide. Additionally, the insulation system may include a topcoat formed from third polymeric enamel insulation formed around the midcoat.

Magnet wire with flexible corona resistant enamel insulation may include a conductor and a multi-layer insulation system formed around the conductor. The insulation system may include a basecoat formed from first polymeric enamel insulation, a midcoat formed from second polymeric enamel insulation, and a topcoat formed from third polymeric enamel insulation. The midcoat may include a filler containing silica dioxide and chromium oxide dispersed in a base polyamideimide material. Additionally, the magnet wire may exhibit few or no cracks in the topcoat when the wire is bent 180 degrees around a 4 mm mandrel.

Amine-substituted copolymers that may include an amine-substituted pyrrolidine-2,5-dione moiety. Polyamic acids and polyimides, which may be formed by contacting an amine substituted copolymer with a dianhydride, or a dianhydride and a diamine. Articles, such as wires, having a surface on which a polyimide is disposed. Methods for forming polymers.

A motor vehicle charging cable for DC voltage charging of an electrical energy store of a motor vehicle has a cable sheath that encloses conductors, such as first and second cooling-fluid-cooled electrical conductor for first and second DC voltage phases, a ground conductor or equipotential bonding conductor and/or at least one control conductor. Shaped elements are arranged between the cable sheath and the conductors at positions of the motor vehicle charging cable that are fixed in mounts. The shaped elements guide, clamp and restrict a relative movement between the conductors. The cable sheath restricts a relative movement between the conductors between those positions at which the motor vehicle charging cable is fixed in mounts.

A conductor arrangement for an electrical connection includes a flexible multi-core internal conductor, an electromagnetic shield surrounding the flexible multi-core internal conductor, a thermoplastic hard plastic sheath surrounding a first portion of the flexible multi-core internal conductor, and a flexible corrugated tube surrounding a second portion the flexible multi-core internal conductor. A first portion of the thermoplastic hard plastic sheath includes an elongated flattened shape. A second portion of the thermoplastic hard plastic sheath includes an essentially round shape. The second portion of the thermoplastic hard plastic sheath is adjacent the first portion of the thermoplastic hard plastic sheath.