Insulation of high thermal conductivity and apparatus containing same

摘要

Metallic conductors of electricity, such as stator bars in turbine generators, are coated with an insulating composition comprising a high temperature-resistant thermoplastic resin, such as a polyimide or polyethersulfone, having uniformly dispersed therein boron nitride or aluminum nitride in a proportion effective to provide a high thermal conductivity. Boron nitride is preferred by reason of its extremely high thermal conductivity, viscosity-decreasing properties and other advantages.