Abstract:
A melt consolidated, multiaxially oriented liquid crystal polymer ("LCP") sheet or other article formed from LCP particles. One embodiment includes a multi-component LCP sheet in which particles of a higher melting LCP are imbedded in a matrix of a lower melting LCP. These LCP components are formed into sheet at a temperature between the melting point of the lower melting matrix LCP and the higher melting reinforcing LCP, so that the imbedded LCP particles may maintain their shape, orientation, and mechanical characteristics while the matrix LCP component flows around the particles and forms a solid sheet. In another embodiment, LCP particles are melt consolidated to form a single article in which a significant amount of LCP orientation is retained. A sheet of this invention may be formed by a variety of processes, and may be made from recycled scrap LCP.
Abstract:
A coextruded liquid crystal polymer ("LCP") film or sheet wherein a higher melting LCP layer is laminated to a lower melting LCP layer. These LCP components are coextruded from the same die. This film or sheet may then be laminated onto other materials at a temperature between the melting point of the lower-melting LCP and the higher-melting LCP, so that the latter LCP may maintain its shape, orientation, and mechanical characteristics while the lower-melting LCP component flows and bonds with the other material. When the higher-melting LCP layer is sandwiched between two lower-melting layers, the film or sheet may be laminated on two sides thereof.
Abstract:
Surfaces of articles molded from unfilled or lightly filled liquid crystal polymers have a tendency to peel away when subjected to even slight rubbing. Such surfaces are improved by subjecting them to abrasion to remove at least 0.01 mm of surface thickness, whereby they acquire a smooth matte finish and are no longer susceptible to peeling.
Abstract:
Surfaces of articles molded from unfilled or lightly filled liquid crystal polymers have a tendency to peel away when subjected to even slight rubbing. Such surfaces are improved by subjecting them to abrasion to remove at least 0.01 mm of surface thickness, whereby they acquire a smooth matte finish and are no longer susceptible to peeling.
Abstract:
A board suitable for the formation thereon of a precision fine-line conductive metal circuit by the substractive method comprises a base plate prepared by molding a liquid-crystal polyester resin composition comprising (A) a melt-processable polyester (liquid-crystal polyester) capable of forming an anisotropic molten phase and (B) an inorganic filler, the base plate being treated to form a metallic coating on the surface thereof by sputtering, ion plating or vacuum deposition while heating said surface to a temperature of 60°C or above in a reduced pressure chamber.
Abstract:
Verbundmaterialien, im wesentlichen aufgebaut aus
A) einem hochtemperaturbeständigen Thermoplasten auf der Basis von Polyarylethersulfonen, Polyaryletherketonen, Polyetherimiden oder thermotropen Polymeren und B) einer direkt darauf aufgebrachten metallischen Schicht, deren Oberfläche durch chemische oder mechanische Behandlung vergrößert wurde, wobei die Seite mit vergrößerter Oberfläche dem hochtemperaturbeständigen Thermoplasten zugewandt ist und die Haftfestigkeit zwischen der metallischen Schicht B) und dem hochtemperaturbeständigen Thermoplasten A), gemessen bei einer Abzugsgeschwindigkeit von 20 mm/min und einem Abzugswinkel von 180°, mindestens 1,9 N/mm beträgt.
Abstract:
A thermally conductive polymer composite material and an article including the same. The thermally conductive polymer composite material includes 15 to 20 parts by weight of a wholly aromatic liquid crystalline polyester resin; and 80 to 85 parts by weight of a thermally conductive additive.
Abstract:
Dehnbare Elektrodenleiteranordnung für ein medizinisches Implantat, die mindestens einen zickzack- oder mäanderförmigen Leiterzug auf einem isolierenden Träger und mit einer isolierenden, mit dem Träger unter Einbettung des Leiterzuges dicht verbundenen Abdeckung aufweist, wobei der Träger ein im Wesentlichen nicht dehnbares Material aufweist und in Anpassung an die Kontur des Leiterzuges oder der Leiterzüge zickzack- oder mäanderförmig zugeschnitten ist.
Abstract:
To provide a copper foil and a copper-clad laminate board that have a good circuit formability and have a favorably suppressed transmission loss even in the use thereof in a high frequency circuit board. A copper foil comprising a gloss face, a surface roughness Ra of a surface of the copper foil on the gloss face side being 0.25 µm or less measured with a laser microscope and a surface roughness Rz of the surface of the copper foil on the gloss face side being 1.10 µm or less measured with a laser microscope, wherein the copper foil has a layer structure after heating at 200°C for 30 minutes or after heating at 130°C for 30 minutes or after heating at 300°C for 30 minutes.
Abstract:
To provide a copper foil and a copper-clad laminate board that have a good circuit formability and have a favorably suppressed transmission loss even in the use thereof in a high frequency circuit board. A copper foil comprising a gloss face, a surface roughness Ra of a surface of the copper foil on the gloss face side being 0.25 µm or less measured with a laser microscope and a surface roughness Rz of the surface of the copper foil on the gloss face side being 1.10 µm or less measured with a laser microscope, wherein the copper foil has a layer structure after heating at 200°C for 30 minutes or after heating at 130°C for 30 minutes or after heating at 300°C for 30 minutes.