Abstract:
The present invention provides a fabric comprising at least one fiber strand comprising a plurality of fibers and having a resin compatible coating composition on at least a surface of the at least one fiber strand, wherein the at least one fiber strand has an Air Jet Transport Drag Force value of greater than 100,000 gram force per gram mass of strand as determined by a needle air jet nozzle unit having an internal air jet chamber having a diameter of 2 millimeters and a nozzle exit tube having a length of 20 centimeters at a strand feed rate of 274 meters per minute and an air pressure of 310 kiloPascals. The present invetion also provides a reinforced laminate comprising: (a) at least one matrix material; and (b) at least one fabric comprising at least one fiber strand comprising a plurality of fibers and having a resin compatible coating composition on at least a surface of the at least one fiber strand, wherein the at least one fiber strand has an Air Jet Transport Drag Force value of greater than 100,000 gram force per gram mass of strand as determined by a needle air jet nozzle unit having an internal air jet chamber having a diameter of 2 millimeters and a nozzle exit tube having a length of 20 centimeters at a strand feed rate of 274 meters per minute and an air pressure of 310 kiloPascals.
Abstract:
The invention is directed to a method and composition for providing roughened copper surfaces suitable for subsequent multilayer lamination. The adhesion promoting composition consisting essentially of an oxidizer, a pH adjuster, a topography modifier (Fig.1), and a uniformity enhancer (Fig.2). A coating promoter may be used in place of the uniformity enhancer or in addition to the uniformity enhancer. The process may further comprise the step of contacting the uniform roughened copper surface with a post-dip, wherein the post-dip comprises an azole or silane compound or a combination of said azole and said silane. The post-dip may further comprise, alone or in combination, a titanate, zirconate, and an aluminate.
Abstract:
The present invention provides a coated fiber strand comprising at least one fiber having a layer of a dried residue of a resin compatible coating composition on at least a portion of a surface of the at least one fiber, the resin compatible coating composition comprising: a) a plurality of discrete, dimensionally stable particles formed from materials selected from the group consisting of organic materials, polymeric materials, composite materials and mixtures thereof that provide an interstitial space between the at least one fiber and at least one adjacent fiber, the particles having an average particle size of about 0.1 to 5 micrometers; b) at least one lubricious material; c) at least one polymeric film former; and d) at least one coupling agent, and a fabric incorporating at least one of the fiber strands.
Abstract:
A method and apparatus for connecting a Tape Automated Bonding (TAB) film to a baseplate. The baseplate may be a heat spreader having a cavity for receiving a semiconductor chip disposed within the TAB film. A pressure-sensitive adhesive coupon may be positioned between the TAB film and the baseplate, thereby connecting the TAB film to the baseplate. An adhesion promoter containing an organofunctional group and a silicon-functional group may be disposed between the adhesive coupon and each of its mating surfaces (i.e., the TAB film and the baseplate) to increase adhesion between the adhesive coupon and the mating surfaces. The adhesion promoter preferably forms covalent bonds with the adhesive coupon and with each of the mating surfaces.
Abstract:
A method and apparatus for connecting a Tape Automated Bonding (TAB) film to a baseplate. The baseplate may be a heat spreader having a cavity for receiving a semiconductor chip disposed within the TAB film. A pressure-sensitive adhesive coupon may be positioned between the TAB film and the baseplate, thereby connecting the TAB film to the baseplate. An adhesion promoter containing an organofunctional group and a silicon-functional group may be disposed between the adhesive coupon and each of its mating surfaces (i.e., the TAB film and the baseplate) to increase adhesion between the adhesive coupon and the mating surfaces. The adhesion promoter preferably forms covalent bonds with the adhesive coupon and with each of the mating surfaces.
Abstract:
This invention relates to treating agents, glass fiber substrates treated with such agents, and the subsequent use of these substrates in molded, glass fiber reinforced resins that are suited to copper clad laminates, composite base materials, printed wiring boards such as mass lamination boards, and, in particular, multilayer printed wiring boards.
Abstract:
A nonwoven fabric cloth substrate for printed wiring boards containing aromatic polyamide fibers and having a 0.7-1.0 dynamic elastic modulus ratio (E' (250°C)/E' (30°C)) and a 0.05 or less loss tangent (Tanδ ) peak value at 30-250°C, and a prepreg and a printed wiring board using the nonwoven fabric cloth substrate.
Abstract:
A resin composition for plating comprising a thermoplastic resin and aluminum borate or amorphous silica, or both as an inorganic filler. The resin composition exhibits excellent plating characteristics and excellent electrical characteristics.
Abstract:
A composition of matter is disclosed comprising a composite of fluorinated particulate carbon dispersed in a polyimide polymer, the fluorinated carbon being present in an amount sufficient to substantially reduce the TCE of the polyimide and in an amount also sufficient to increase or decrease the dielectric constant of the composition when the composite is heated slowly or quickly to temperatures of about 400°C. The composite can be made conductive by irradiating it with an UV excimer laser.
Abstract:
A metal foil-clad laminate obtained by lamination molding a resin-impregnated substrate and a metal foil, wherein the resin-impregnated substrate contains from 5 to 30% by weight of at least one inorganic filler selected from the group consisting of calcined kaolin, spherical fused silica, non-swellable synthetic mica, and a glass fine powder, the filler having an average particle diameter of from 0.1 to 5 µm and at least 90 wt% of the filler having a particle diameter of from 0.02 to 5 µm, and the resin-impregnated substrate is used as at least a surface layer of the laminate or as a resin-impregnated substrate which adheres the metal foil, thereby providing a surface smooth metal foil-clad laminate having a diminished surface undulation attributable to the substrate.