General Electric Company

Robert Colin McTigue

Weijun Yin

Kevin Warner Flanagan

Gary William Yeager

Sergei Kniajanski

Wei Zhang

Mark Edwin Rodda

Eugene Pauling Boden

Patricia Chapman Irwin

Norberto Silvi

James Jun Xu

Christopher Michael Calebrese

David Andrew Simon

Kathryn Amanda Misner

Stephen Francis Francese

An electrical insulating system and an associated insulated stator bar are provided. The electrical insulating system includes an electrically insulating mica paper and a fiber glass disposed on a first surface of the electrically insulating mica paper. The electrically insulating mica paper and the fiber glass are impregnated with a curable binder resin composition. The curable binder resin composition includes about 21 weight percent to about 73 weight percent of a solid or semi-solid epoxy resin having an epoxide functionality of about 2.5, about 0.8 weight percent to about 49 weight percent of a liquid epoxy resin having an epoxide functionality of about 2, about 4 weight percent to about 15 weight percent of a bisphenol A-formaldehyde novolac, a metal acetylacetonate catalyst, and about 2.5 weight percent to about 15 weight percent of a toughener selected from the group consisting of polyethersulfone, methylmethacrylate butadiene styrene, and a combination thereof.

Electrical insulation systems and insulated components for electrical machine

A curable composition for an electrical machine is presented. The curable composition includes: (A) about 10 weight percent to about 30 weight percent of a polyfunctional cyanate ester; (B) about 25 weight percent to about 60 weight percent of a first difunctional cyanate ester, or a prepolymer thereof; (C) about 10 weight percent to about 30 weight percent of a second difunctional cyanate ester, or a prepolymer thereof, and (D) about 5 weight percent to about 25 weight percent of a thermally conductive filler comprising boron nitride. An associated method is also presented.

Curable composition for electrical machine, and associated method

A method of making a composite magnet wire includes mixing alumina nano particles with a polyimide polymer to form a polyimide mixture, the alumina nano particles having a surface treatment applied to outer surfaces of the alumina nano particles, the surface treatment including a phenyl-silane; coating a wire with the polyimide mixture by passing the wire through a coating die; heating the coated wire; cooling the coated wire; passing the coated wire through an annealing oven at a temperature of about 425&#xb0; C. to about 475&#xb0; C. at a speed of about 15 to about 30 feet per minute to anneal the coated wire; cooling the annealed coating wire; spooling the coated wire onto a metal spool; heating the spooled wire at about 300&#xb0; C. to about 400&#xb0; C. for about 20 to about 40 minutes; and cooling the heated spooled wire.

High temperature high frequency magnet wire and method of making

A composite magnet wire includes, in an exemplary embodiment, a metal wire and a coating applied to an outer surface of the wire. The coating includes a polyimide polymer and a plurality of alumina nano particles dispersed in the polyimide polymer. The alumina nano particles have a surface treatment applied to outer surfaces of the alumina nano particles, where the surface treatment includes a phenyl-silane. The composite magnet wire has a thermal degradation temperature index of at least 300&#xb0; C. as calculated in accordance with ASTM E1641 or D2307.

A polyimide resin is provided. The polyimide resin comprises the reaction product of a polyimide resin and an amine comprising a Chydrocarbon substituted with CN, F, SO, SO, S, SO, SO, PO, POH, POH, PO, PO, CO, CO, COH, CONH, CONH, NHCOHN, OCONH, OCO, N, NH, NH, NO, CSNH, CSNH, NHCSNH, OTi(OR), or OSi(OR)or combinations of these, wherein Ris a Caliphatic or aromatic hydrocarbon. The resin may be used to provide a thin film that in turn, may advantageously be used to form, wholly or in part, articles such as capacitors, sensors, batteries, flexible printed circuit boards, keyboard membranes, motor/transformer insulations, cable wrappings, industrial tapes, interior coverage materials, and the like. In particular, a capacitor comprising the thin film and methods of making the same are also provided.

Polyimides and thin films, electronic articles and capacitors comprising these, and methods of making them

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Coeymans Hollow, NY, United States of America

Robert Colin McTigue