摘要:
A capacitor of the present invention employs one of i) polyimide directly formed by electrodeposition, ii) organic high polymer having a specific structure formed by electrodeposition, and iii) a composite film of the organic high polymer and oxide film of a conductor as dielectrics formed on the surface-roughened conductor. The organic high polymer used in the present invention contains carboxylic radical in its molecular structure. The capacitor of the present invention further comprises an opposite electrode at least containing conductive high polymer on the dielectrics. This conductive high polymer is formed by chemical oxydation-polymerization or both chemical oxydation-polymerization and electro-polymerization. The capacitor element as configured above is strong to mechanical stress, and possible to apply pressure during lamination. By laminating many of capacitor elements as configured above, a capacitor with large capacitance but small equivalent serial resistance, small leak current, and good frequency characteristics is obtained. A method for manufacturing capacitors of the present invention comprises the steps of forming a dielectric layer made of organic high polymer or a composite film of the organic high polymer and oxide film of conductor on a surface-roughened conductor; forming an insulating layer at least on the conductor; forming an opposite electrode on said dielectric layer to manufacture capacitor elements; and laminating more than one capacitor elements and connecting each other to form a laminated capacitor.
摘要:
A novel zinc oxide crystal has an octahedral nucleus whose faces are alternately zinc faces and oxide faces, and this crystal has such a geometric shape that a needle is grown on each of the faces. The needle grown on the oxide face is branched into three sections which are disposed in parallel relation, and the needle on the oxide face is shorter than the needle on the zinc face. This novel crystal having oxide films can be produced in a homogeneous manner by mixing zinc-tin alloy powder or tin powder with zinc powder, having an oxide film formed on each particle thereof, to form a powder mixture and then by heating the powder mixture at 820°C to 1100°C in an oxidizing atmosphere to oxide the same. The tin concentration in the power mixture is less than 40 wt.%.
摘要:
The invention relates to whiskers of zinc oxide whose crystal structure includes a central body and four needle crystal projections radially extending from said central body are described. The whiskers are so unique a structure they they are applicable to various materials such as metals, resins, ceramics and the like as a reinforcing material. The whiskers may be in the form of a mixture of whiskers of zinc oxide having crystal structures including two, three, four and/or five needle crystal projections. A method for preparing such whiskers is also described in which a metallic zinc powder having an oxide film thereon is provided and thermally treated to form a whisker product.
摘要:
The present invention relates to an electrically conductive resin composition used as shielding materials against electromagnetic radiation and antistatic or static dissipative materials, having a stable electro-conductivity. Therefore, the resin composition according to the invention comprises a matrix resin blended with metal fibers and zinc whiskers in a tetrapod shape as shown in Fig.1.
摘要:
The invention relates to whiskers of zinc oxide whose crystal structure includes a central body and four needle crystal projections radially extending from said central body are described. The whiskers are so unique a structure they they are applicable to various materials such as metals, resins, ceramics and the like as a reinforcing material. The whiskers may be in the form of a mixture of whiskers of zinc oxide having crystal structures including two, three, four and/or five needle crystal projections. A method for preparing such whiskers is also described in which a metallic zinc powder having an oxide film thereon is provided and thermally treated to form a whisker product.
摘要:
A capacitor of the present invention employs one of i) polyimide directly formed by electrodeposition, ii) organic high polymer having a specific structure formed by electrodeposition, and iii) a composite film of the organic high polymer and oxide film of a conductor as dielectrics formed on the surface-roughened conductor. The organic high polymer used in the present invention contains carboxylic radical in its molecular structure. The capacitor of the present invention further comprises an opposite electrode at least containing conductive high polymer on the dielectrics. This conductive high polymer is formed by chemical oxydation-polymerization or both chemical oxydation-polymerization and electro-polymerization. The capacitor element as configured above is strong to mechanical stress, and possible to apply pressure during lamination. By laminating many of capacitor elements as configured above, a capacitor with large capacitance but small equivalent serial resistance, small leak current, and good frequency characteristics is obtained. A method for manufacturing capacitors of the present invention comprises the steps of forming a dielectric layer made of organic high polymer or a composite film of the organic high polymer and oxide film of conductor on a surface-roughened conductor; forming an insulating layer at least on the conductor; forming an opposite electrode on said dielectric layer to manufacture capacitor elements; and laminating more than one capacitor elements and connecting each other to form a laminated capacitor.
摘要:
A novel zinc oxide crystal has an octahedral nucleus whose faces are alternately zinc faces and oxide faces, and this crystal has such a geometric shape that a needle is grown on each of the faces. The needle grown on the oxide face is branched into three sections which are disposed in parallel relation, and the needle on the oxide face is shorter than the needle on the zinc face. This novel crystal having oxide films can be produced in a homogeneous manner by mixing zinc-tin alloy powder or tin powder with zinc powder, having an oxide film formed on each particle thereof, to form a powder mixture and then by heating the powder mixture at 820 DEG C to 1100 DEG C in an oxidizing atmosphere to oxide the same. The tin concentration in the power mixture is less than 40 wt.%.
摘要:
The present invention relates to an electrically conductive resin composition used as shielding materials against electromagnetic radiation and antistatic or static dissipative materials, having a stable electro-conductivity. Therefore, the resin composition according to the invention comprises a matrix resin blended with metal fibers and zinc whiskers in a tetrapod shape as shown in Fig.1.
摘要:
Soundproofing materials consisting essentially of zinc oxide whisker particles having a nucleus body and needle crystal portions extending radially from the central body in different plural directions. The materials may comprise a support material for supporting the zinc oxide whisker particles. Such support materials include inorganic materials such as metals, ceramics, glasses, cements, mortars and various fillers in the form of powder, flakes, fibers and the like, and organic materials such as resins, rubbers, waxes and the like. These materials are particularly suitable for sound insulation, sound proofing, vibration damping and vibration insulation.