Abstract: Submicron boron nitride is used as a catalyst for thermally activating polysiloxane resins when uniformly mixed with the resin either using anhydrous acetone for wet mixing or simply hot melt mixing. Boron nitride is also used to coat the fibers using a particulate sizing approach. The coated fibers are used to activate the polymer resin blend. Fabric may be impregnated with the resin to mold high temperature composite laminates from which high temperature, non-metallic gaskets may be cut.

Abstract: A gasket of non-conductive material formed of layers of a ceramic between which is embedded a wire circuit for connecting spark electrodes, high voltage connectors and ground connectors of a spark ignition system. The wire circuit includes small diameter wires surrounding gasket openings for bounding and sealing the edges of combustion chambers defined by cylinders in an internal combustion engine. The small diameter wires are insulated by the high dielectric layers of the gasket as well as by high dielectric wrappings and a sheath of high dielectric material bonded to and within the layers forming to gasket.

Abstract: A high temperature silicon sealant comprising a combination of high molecular weight, high viscosity silicon oil; a low molecular weight, low viscosity silicon oil; a liquid organo-metallic catalyst; and a submicron boron nitride powder.