摘要:
A heat radiation member including a thermal diffusion sheet; and a thermally conductive polymer layer provided on at least a part of the thermal diffusion sheet. Thermal conductivity of the thermally conductive polymer layer in a thickness direction of the layer is higher than thermal conductivity of the thermally conductive polymer layer in a direction parallel to the surface of the layer. The heat radiation member is formed by joining an independently formed thermally conductive layer including a thermally conductive filler onto the thermal diffusion sheet. The thermally conductive filler are oriented in a specific direction. Alternatively, the heat radiation member is formed by placing a thermally conductive polymer composition containing a thermal conductive filler containing a thermally conductive filler onto the thermal diffusion sheet, orienting the thermally conductive filler in a specific direction, and curing the thermally conductive polymer composition while the orientation is maintained.
摘要:
The present invention provides an electrolyte membrane formed of an ion conductive composition. Said composition contains a liquid crystalline polymer having an ionic dissociative group. Molecular chains of the liquid crystalline polymer are orientated in a specific direction. The degree of orientation α of the liquid crystalline polymer is in a range of 0.45 or more and less than 1, as defined by equation (1) as follows, Degree of orientation α=(180−Δβ)/180 (1), wherein Δβ is a full width at half maximum of a peak in an X-ray diffraction intensity distribution pattern obtained by measuring an intensity distribution from 0 to 360 degrees in the azimuthal angle direction, at a peak scattering angle, in an X-ray diffraction image of the electrolyte membrane. Ionic conductivity in a thickness direction of the membrane is higher than the ionic conductivity in a direction parallel to a surface of the membrane. The present invention also provides a method for manufacturing an electrolyte membrane formed of an ion conductive composition.
摘要:
A polymer composite molded body contains a fiber and at least one sheet of fiber cloth in a polymer matrix. The fiber cloth is disposed in the polymer composite molded body along a surface thereof. A polymer composition containing the fiber and polymer matrix is impregnated into the fiber cloth. Then a magnetic field is applied to the polymer composition to orient the fibers in the composition in a direction crossing with the fiber cloth. Then the polymer composition is solidified to obtain the polymer composite molded body.
摘要:
This invention relates to a heat conductive resin substrate which polybenzasol fibers are oriented in a thick direction and/or a direction of a surface of a resin substrate, further to the heat conductive resin substrate and a semiconductor package excellent in heat radiation ability which the semiconductor chips are mounted on the heat conductive resin substrate which the polybenzasol fibers are oriented in the thick direction (the Z direction) and/or the direction of the surface of the resin substrate, the heat conductive resin substance and the semiconductor package being provided with electrical insulation and high thermal conductivity, and being capable of controlling the thermal expansion coefficient.
摘要:
A thermally conductive molded article is produced by molding a conductive composition into a predetermined shape. The composition includes a polymer matrix and carbon powders. The carbon powders are obtained by graphitizing a polymeric material that has an aromatic ring on its main chain by heating. The carbon powders are aligned in a certain direction in the polymer matrix. Thus, the molded article can be produced easily and effectively that has excellent thermal conductivity in a given direction and that is suitable for use as a heat radiator, heat transfer member, or a component thereof in electronic hardware.
摘要:
The first film of the present invention is a film produced by solidifying a polybenzazole precursor that has been oriented in a given direction by the application of a magnetic or electric field. The second film of the present invention is a film produced by solidifying a polybenzazole that has been oriented in a given direction by the application of a magnetic or electric field. The first and second films have a strong anisotropy.
摘要:
The present invention provides an adhesion method of improving the heat conduction in a fixed direction by using a heat conductive adhesive made by blending boron nitride powder and adhesive polymer and adhering by orienting boron nitride powder in the heat conductive adhesive to the fixed direction under the magnetic atmosphere and an electronic component for effectively dissipating heat generated from semiconductor device 2, power source 4, light source or other components used for the electric products, and an electronic component excellent in radiation.
摘要:
This invention relates to a heat conductive resin substrate which polybenzasol fibers are oriented in a thick direction and/or a direction of a surface of a resin substrate, further to the heat conductive resin substrate and a semiconductor package excellent in heat radiation ability which the semiconductor chips are mounted on the heat conductive resin substrate which the polybenzasol fibers are oriented in the thick direction (the Z direction) and/or the direction of the surface of the resin substrate, the heat conductive resin substance and the semiconductor package being provided with electrical insulation and high thermal conductivity, and being capable of controlling the thermal expansion coefficient.
摘要:
A thermoplastic polymer composite formed article or a thermoplastic polymer composite formed article formed from a thermoplastic polymer or a thermoplastic polymer and a fiber, wherein the fiber is arranged along a first plane and the molecular chains of the thermoplastic polymer or thermoplastic polymer is oriented in the direction intersecting with the first plane, and the molecular chains of the thermoplastic polymer or thermoplastic polymer has a degree (a) of orientation in a range of 0.5 or more and less than 1.0, and wherein the thermal expansion coefficients of said formed article in the direction along the first plane and in the direction intersecting with the first plane are both 5×10−6 to 50×10−6 (/K), and the difference between the thermal expansion coefficient in the direction along the first plane and the thermal expansion coefficient in the direction intersecting with the first plane is 30×10−6 (/K) or less.
摘要:
The first film of the present invention is a film produced by solidifying a polybenzazole precursor that has been oriented in a given direction by the application of a magnetic or electric field. The second film of the present invention is a film produced by solidifying a polybenzazole that has been oriented in a given direction by the application of a magnetic or electric field. The first and second films have a strong anisotropy.