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    • 3. 发明授权
    • Insulating material for coaxial cable, coaxial cable and method for producing coaxial cable
    • 同轴电缆绝缘材料,同轴电缆及同轴电缆的制造方法
    • US06335490B1
    • 2002-01-01
    • US08659669
    • 1996-06-05
    • Takashi HigashikuboToshihiro ZushiHirokazu KuzushitaTamotsu Kaide
    • Takashi HigashikuboToshihiro ZushiHirokazu KuzushitaTamotsu Kaide
    • H01B700
    • C08J9/0061C08J9/122C08J2323/02C08J2427/00H01B3/441H01B3/445H01B11/1839
    • An insulating material for coaxial cables, made at least in part with a polyolefin resin capable of heat-melt extrusion and a fluororesin powder as a nucleator, which material being capable of foam extrusion in the presence of a foaming agent; a coaxial cable made at least in part with a foam insulating layer prepared from the insulating material; and a method for producing a coaxial cable, by extruding, on a conductor, the insulating material to form a foam insulating layer. The insulating material for coaxial cables of the present invention containing a fluororesin powder such as PTFE as a nucleator provides a foamed article having fine and uniform cells, and a high expansion ratio. Such foamed article is superior in electric properties, and the coaxial cable having such insulating layer is superior in attenuation property. The material of the invention can obviate drying of the insulating layer, which contributes to an improved production efficiency of the coaxial cable and reduced production cost. In addition, the insulating material of the present invention is beneficially economical.
    • 用于同轴电缆的绝缘材料,至少部分由能够热熔挤出的聚烯烃树脂和作为成核剂的氟树脂粉末制成,该材料能够在发泡剂存在下进行泡沫挤出; 至少部分地由绝缘材料制成的泡沫绝缘层制成的同轴电缆; 以及通过在导体上挤出绝缘材料以形成泡沫绝缘层来制造同轴电缆的方法。 含有氟树脂粉末如PTFE作为成核剂的本发明的同轴电缆绝缘材料提供了具有细小均匀的电池和高膨胀率的发泡制品。 这种发泡制品的电性能优异,并且具有这种绝缘层的同轴电缆的衰减特性优异。 本发明的材料可以避免绝缘层的干燥,这有助于提高同轴电缆的生产效率并降低生产成本。 此外,本发明的绝缘材料是有利的。
    • 8. 发明授权
    • Foamable organic polymer composition and production of foamed article
    • 可发泡有机聚合物组合物和泡沫制品的生产
    • US5574074A
    • 1996-11-12
    • US197884
    • 1994-02-17
    • Toshihiro ZushiTakashi HigashikuboTamotsu KaideTakuma TakaiMakoto WadaKaneharu Suga
    • Toshihiro ZushiTakashi HigashikuboTamotsu KaideTakuma TakaiMakoto WadaKaneharu Suga
    • C08J9/04C08J9/12H01B3/44C08J9/10
    • C08J9/122C08J9/04H01B3/441C08J2323/02
    • A foamable organic composition comprising a compound foamable to 50% or more comprising an organic polymer and a chemical foaming agent, and, as a physical foaming agent, at least one member selected from the group consisting of rare gases and carbon dioxide; and a method for producing a foamed article having a high expansion ratio by using said composition. According to the present invention, a foamed article having a uniform and fine foam structure and a high expansion ratio of not less than 75% (which is as high as when freon gas is used) can be obtained without causing environmental problems such as depletion of the ozon layer. When applied, in particular, to a foamed layer for an insulated conductor, such as foam-insulated electric wire which is required to have high performance insulation and is occasionally installed under severe conditions, the composition of the present invention advantageously provides an insulated conductor with no potential buckling.
    • 一种可发泡的有机组合物,其包含可发泡至50%或更多的包含有机聚合物和化学发泡剂的化合物,以及作为物理发泡剂的至少一种选自稀有气体和二氧化碳的组分; 以及通过使用所述组合物制造具有高膨胀率的发泡制品的方法。 根据本发明,可以获得具有均匀且细小的泡沫结构和高膨胀率不小于75%(与使用氟利昂气体时相同的高膨胀率)的发泡制品,而不会造成环境问题,如消耗 臭氧层。 尤其适用于要求具有高性能绝缘性且偶尔在恶劣条件下安装的绝缘导体如泡沫绝缘电线的发泡层时,本发明的组合物有利地提供了一种具有 没有潜在的屈曲。
    • 9. 发明授权
    • Method for producing silica glass optical fiber with carbon coating
    • 用碳涂层生产石英玻璃光纤的方法
    • US5354348A
    • 1994-10-11
    • US913171
    • 1992-07-14
    • Toshihiro ZushiShigeru NakaharaTetsuya TakedaNobusada NagaeMasaaki MorisawaTamotsu KaideHiroyuki Tanaka
    • Toshihiro ZushiShigeru NakaharaTetsuya TakedaNobusada NagaeMasaaki MorisawaTamotsu KaideHiroyuki Tanaka
    • C03C25/10C03C25/22C03B37/023
    • C03C25/223C03C25/1075
    • A method for producing a silica glass optical fiber, which comprises coating carbon on the optical fiber with the use of the remaining heat of not less than 800.degree. C. possessed by the optical fiber just after heat wire drawing, for thermal decomposition of a carbon coat-forming gas comprised of one or more members selected from the group of halogenated hydrocarbons, hydrocarbons, and halogen molecules, which has 5 to 15 hydrogen atoms per 10 halogen atoms, and a reaction apparatus for coating carbon, wherein the area of the outer end of an exhaust region is greater than the transverse sectional area of a coating region, and the outer end is outwardly opened. The production method and the reaction apparatus therefor of the present invention are advantageous in that the optical fiber thus obtained has superior properties in terms of resistance to water, resistance to hydrogen, and mechanical strength, specifically tensile strength, that sedimentation of the soot component in the reaction apparatus can be prevented, that the flow of the material gas can be made smooth, that a uniform carbon coat can be formed on the surface of the optical fiber, and that long-term operation of carbon coating apparatus can be made possible.
    • 一种二氧化硅玻璃光纤的制造方法,其特征在于,在光纤拉丝后,利用光纤所具有的不低于800℃的剩余热量,在碳纤维上涂覆碳,进行碳分解 由选自卤化烃,碳氢化合物和卤素分子的一个或多个成员组成的涂层形成气体,每10个卤素原子具有5至15个氢原子,以及用于涂覆碳的反应装置,其中外部区域 排气区域的端部大于涂覆区域的横截面面积,并且外端部向外打开。 本发明的制造方法及其反应装置的优点在于,由此获得的光纤在耐水性,耐氢性以及机械强度(特别是拉伸强度)方面具有优异的性能,即烟灰组分的沉降 可以防止反应装置能够使材料气体的流动平滑,可以在光纤表面上形成均匀的碳涂层,并且可以使碳涂覆装置的长期运行成为可能。