摘要:
A thermally conductive polymer composition includes polymer matrix such as thermoplastic resin or thermoplastic elastomer and a graphitized carbon fiber which serves as a thermally conductive filler. The graphitized carbon fiber is made from a mesophase pitch. The mesophase pitch is spun, infusibilized, carbonized, pulverized, and graphitized to form powdery graphitized carbon fibers. Preferably, the graphitized carbon fibers have a diameter of 5-20µm, an average particle size of 10-500µm, and a density of 2.20-2.26g/cm 3 . The composition may be molded to form a thermally conductive molded article such as a thermally conductive sheet. The thermally conductive polymer composition and thermally conductive molded article have high thermal conductivity and transfer large amounts of heat from electric or electronic parts.
摘要翻译:导热聚合物组合物包括聚合物基质如热塑性树脂或热塑性弹性体,以及用作导热填料的石墨化碳纤维。 石墨化碳纤维由中间相沥青制成。 将中间相沥青纺丝,不熔化,碳化,粉碎和石墨化,形成粉状石墨化碳纤维。 优选石墨化碳纤维的直径为5-20μm,平均粒径为10-500μm,密度为2.20-2.26g / cm 3。 该组合物可以被模制以形成诸如导热片的导热模制品。 导热聚合物组合物和导热模制品具有高导热性并从电子或电子部件传递大量的热量。
摘要:
A thermally conductive formed article according to the present invention includes a matrix, and short carbon fibers which are present in the matrix. The short carbon fibers are oriented in a fixed direction in the matrix. A ratio I (002) /I (110) between an intensity I (110) of a diffraction peak ascribable to a (110) surface of carbon and an intensity I (002) of a diffraction peak ascribable to a (002) surface of carbon, occurring when X-rays are irradiated onto the thermally conductive formed article along the direction of orientation of the short carbon fibers, is 10 or less.
摘要:
A thermally conductive formed article according to the present invention includes a matrix, and short carbon fibers which are present in the matrix. The short carbon fibers are oriented in a fixed direction in the matrix. A ratio I (002) /I (110) between an intensity I (110) of a diffraction peak ascribable to a (110) surface of carbon and an intensity I (002) of a diffraction peak ascribable to a (002) surface of carbon, occurring when X-rays are irradiated onto the thermally conductive formed article along the direction of orientation of the short carbon fibers, is 10 or less.
摘要:
Disclosed is a thin key sheet in which the adhesive is prevented from being squeezed out and in which adhesive marks and bubble marks are hard to be visible. An adhesive layer (8) is in a dot pattern formed by a plurality of dots spaced apart from each other by gaps, so when attaching a key top (1) and a base sheet (7) to each other through an intermediation of the adhesive layer (8), it is possible to allow air to escape through the gaps, and bubbles recognizable to a naked eye are not easily trapped by the interior of the adhesion layer (8) or an interface between the adhesive layer (8) and the key top (1). Further, since the adhesive layer (8) is a screen print layer (8), a dimension of elements of fine pattern thereof can be on an order of microns, thereby making the fine pattern of the adhesive layer (8) hard to be visible through the key top (1).
摘要:
Disclosed is a thin key sheet in which the adhesive is prevented from being squeezed out and in which adhesive marks and bubble marks are hard to be visible. An adhesive layer (8) is in a dot pattern formed by a plurality of dots spaced apart from each other by gaps, so when attaching a key top (1) and a base sheet (7) to each other through an intermediation of the adhesive layer (8), it is possible to allow air to escape through the gaps, and bubbles recognizable to a naked eye are not easily trapped by the interior of the adhesion layer (8) or an interface between the adhesive layer (8) and the key top (1). Further, since the adhesive layer (8) is a screen print layer (8), a dimension of elements of fine pattern thereof can be on an order of microns, thereby making the fine pattern of the adhesive layer (8) hard to be visible through the key top (1).
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 a fixed direction under the magnetic atmosphere. The invention also provides an electronic component for effectively dissipating heat generated from a semiconductor device (2), power source (4), light source or other components used for electric products, and an electronic component having excellent radiation.