Abstract:
A composite material is presented comprised of a ceramic filled fluoropolymer wherein the ceramic is coated with a fluorosilane and the ceramic has a volume % fraction of between about 45-50.
Abstract:
A composite material is presented comprised of a ceramic filled fluoropolymer wherein the ceramic is coated with a silane and the ceramic has a volume % fraction of between about 45-50.
Abstract:
Conductor-clad composites are advantageously fabricated using molding compounds and associated processing techniques. The conductive cladding is applied and bonded to the composite during the molding process. The conductor-clad composite may be used as printed wiring board, and in this embodiment results in improved physical, chemical, mechanical, and electrical properties.
Abstract:
This disclosure is directed to on-command, self-destructible, fibrous-reinforced molded structures, e.g., printed circuit assemblies, comprising a plastic-fibrous matrix containing encapsulated material capable of rapid yet non-explosive combustion, e.g., incendiary or pyrotechnic material. The major surfaces (faces) of said structures can be provided with an electroconductive portion(s), or conductive face, e.g., metallic, materials (facing sheets) can be secured thereto. One of the facing sheets can constitute or contain a printed circuit. All of the incendiary material must be encapsulated to render it inactive at ambient conditions until the desired time for ignition and achieve other advantages. Moreover, the structures can be provided with an igniter(s) to communicate with at least a portion of the encapsulated incendiary composition. A predominant portion of the molded structure is incendiary material and the burning temperature can be controlled in a satisfactory manner by controlling the concentration of incendiary, esp. fuel.
Abstract:
A thermal management circuit material comprises an electrically conductive layer; a dielectric layer comprising a polymer matrix and a thermally conductive, electrically non-conductive particulate filler, wherein the dielectric layer is disposed on and in at least partial contact with the electrically conductive layer, and wherein the circuit material has a thermal conductivity of greater than or equal to about 1 watt per meter-degree Kelvin.
Abstract:
A two component solder resist coating wherein a first component comprising a partial hydrolyzate of an alkoxysilane compound and an organic solvent and a second component comprising a titanium alkoxide and an organic solvent are mixed and cured, characterized in that the first component and/or the second component contain a potassium titanate fiber; a solder resist cured product formed from the coating; and a printed wiring board having a coating film prepared by forming a pattern using the coating and then curing the pattern. Said solder resist coating may further contain, in the first component and/or the second component, at least one selected from among a kaolin powder, an alumina powder and an aluminum hydroxide powder having been treated with a coupling agent, a fumed silica powder having been subjected to a surface treatment for imparting hydrophobicity, an ethyl cellulose powder, a blue pigment containing no halogen atom and/or a yellow pigment containing no halogen atom.
Abstract:
A sheet comprising thermoplastic polymer(TP)and short high tensile modulus fibers, in which the concentration of TP in the middle of the sheet is higher than at the surface of the sheet, useful for making prepregs with a thermoset resin.
Abstract:
A pre-preg substrate, having a low dielectric constant and containing a substantially uniformly distributed hollow-glass-microsphere filler, and method for making the same. The pre-preg substrate is treated with impregnation and lamination techniques to form a laminate with a low dielectric constant, and good mechanical and electrical properties, suitable as a base material for surface mounted devices in high performance circuits. Improved pre-pregs for making high performance circuit boards and for making surface mounted integrated circuits. Improved high performance circuit boards for making surface mounted integrated circuits.