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    • 25. 发明授权
    • Coaxial cable of low dielectric constant, and a fabrication method and tool therefor
    • 低介电常数同轴电缆及其制造方法和工具
    • US08007700B2
    • 2011-08-30
    • US12222090
    • 2008-08-01
    • Sophie Perez
    • Sophie Perez
    • B27J5/00B29C57/00B32B15/04H01B3/44
    • H01B13/24H01B3/16H01B3/445H01B13/142H01B13/143H01B13/145H01B13/148H01B13/30H01B19/02
    • An electric cable for conveying signals, the cable having a diameter of less than 2 mm and comprising at least one conductor in an insulating sheath, the sheath having a dielectric constant ε of less than 1.7. To achieve this, the sheath is made of PTFE and it includes at least one continuous cell. Fabrication is preferably by performing the following operations: compressing a lubricant-impregnated PTFE powder in a converging chamber arranged in an extrusion die and around a guide for guiding said at least one conductor, the impregnated PTFE powder thus being thrust towards an extrusion orifice to form an extrudate; causing said extrudate to pass from said orifice along an extrusion passage inside the die, in which it is shaped around the conductor(s), and of inside section that corresponds to the outline desired for the sheath; passing said extrudate around at least one solid bar presenting, at least over a distance within the extrusion passage, the same section as said cell and thereby preventing the extrudate from occupying the section that is to be occupied by said cell, the cell(s) being formed from the downstream end surface(s) of the bar(s) and extending downstream therefrom; extracting the lubricant by evaporation; and sintering the resulting assembly.
    • 一种用于传送信号的电缆,所述电缆具有小于2mm的直径,并且在绝缘护套中包括至少一个导体,所述护套具有介电常数ε, 小于1.7。 为了实现这一点,护套由PTFE制成,并且其包括至少一个连续的电池。 优选通过进行以下操作来进行制造:将布置在挤出模具中的会聚室内的润滑剂浸渍的PTFE粉末压缩在引导所述至少一个导体的引导件周围,从而将浸渍的PTFE粉末推向挤出孔以形成 挤出物 使得所述挤出物沿着模具内部的挤出通道从所述孔口通过,其中所述挤出物形成在导体周围,并且内部部分对应于护套所需的轮廓; 将所述挤出物绕过至少一个固体条,至少在挤出通道内一段距离处呈现与所述细胞相同的部分,从而防止挤出物占据被所述细胞占据的部分, 由所述条的下游端表面形成并在其下游延伸; 通过蒸发萃取润滑剂; 并烧结所得组件。
    • 26. 发明申请
    • COMPOSITIONS CONTAINING SULFUR HEXAFLUORIDE AND USES THEREOF
    • 含有硫化氢的组合物及其用途
    • US20100171062A1
    • 2010-07-08
    • US12728371
    • 2010-03-22
    • Matthew H. LulyRajiv R. SinghRobert G. Richard
    • Matthew H. LulyRajiv R. SinghRobert G. Richard
    • H02H99/00H01B3/16H05K5/06A62D1/00
    • H01B3/16A62C99/0018H01H2033/566
    • A method for suppressing an electric arc or corona discharge includes providing a device capable of storing, transmitting, or generating an electrical current or field; and enveloping at least a portion of said device with a dielectric gas consisting essentially of: sulfur hexafluoride; a second component selected from the group consisting of nitrous oxide; carbon dioxide; trifluoromethane (R32); trifluoroiodomethane; octafluoropropane (R218); 1,1,1,2,2-pentafluoroethane (R125); propane (R290); 1,1,1,2-tetrafluoropropene (HFO-1234yf); 1,2,3,3-tetrafluoro-2-propene (HFO-1234yc); 1,1,3,3-tetrafluoro-2-propene (HFO-1234zc); 1,1,1,3-tetrafluoro-2-propene (HFO-1234ze); 1,1,2,3-tetrafluoro-2-propene (HFO-1234ye); 1,1,1,2,3-pentafluoropropene (HFO-1225ye); 1,1,2,3,3-pentafluoropropene (HFO-1225yc); 1,1,1,3,3-pentafluoropropene (HFO-1225zc); (Z)1,1,1,3-tetrafluoropropene (HFO-1234zeZ); (Z)1,1,2,3-tetrafluoro-2-propene (HFO-1234yeZ); (E)1,1,1,3-tetrafluoropropene (HFO-1234zeE); (E)1,1,2,3-tetrafluoro-2-propene (HFO-1234yeE); (Z)1,1,1,2,3-pentafluoropropene (HFO-1225yeZ); (E)1,1,1,2,3-pentafluoropropene (HFO-1225yeE) and combinations of two or more of these; and optionally, an additive selected from the group consisting of stabilizers, metal passivators, corrosion inhibitors, and lubricants.
    • 抑制电弧或电晕放电的方法包括提供能够存储,传输或产生电流或场的装置; 以及用基本上由六氟化硫组成的介电气体包封所述装置的至少一部分; 选自由一氧化二氮组成的组的第二组分; 二氧化碳; 三氟甲烷(R32); 三氟碘甲烷 八氟丙烷(R218); 1,1,1,2,2-五氟乙烷(R125); 丙烷(R290); 1,1,1,2-四氟丙烯(HFO-1234yf); 1,2,3,5-四氟-2-丙烯(HFO-1234yc); 1,1,3,3-四氟-2-丙烯(HFO-1234zc); 1,1,1,3-四氟-2-丙烯(HFO-1234ze); 1,1,2,3-四氟-2-丙烯(HFO-1234ye); 1,1,1,2,3-五氟丙烯(HFO-1225ye); 1,1,2,3,3-五氟丙烯(HFO-1225yc); 1,1,1,3,3-五氟丙烯(HFO-1225zc); (Z)1,1,1,3-四氟丙烯(HFO-1234zeZ); (Z)1,1,2,3-四氟-2-丙烯(HFO-1234yeZ); (E)1,1,1,3-四氟丙烯(HFO-1234zeE); (E)1,1,2,3-四氟-2-丙烯(HFO-1234yeE); (Z)1,1,1,2,3-五氟丙烯(HFO-1225yeZ); (E)1,1,1,2,3-五氟丙烯(HFO-1225yeE)及其两种或多种的组合; 和任选的选自稳定剂,金属钝化剂,腐蚀抑制剂和润滑剂的添加剂。
    • 27. 发明授权
    • Dielectric gas-vapor and vapor-vapor mixtures
    • 介电气 - 蒸气和蒸气 - 蒸气混合物
    • US4320035A
    • 1982-03-16
    • US231520
    • 1981-02-04
    • Ronald T. Harrold
    • Ronald T. Harrold
    • C10M171/00C10M105/00C10N20/00C10N40/16C10N50/06H01B3/16H01B3/24H01B3/56H01B3/20
    • H01B3/16H01B3/56
    • A dielectric fluid composition with high electrical strength characterized by a gas mixed with the vapor from a first fluid having a high vapor pressure at a low temperature and the vapor from a second fluid having a low vapor pressure at a low temperature to effect a mixture having a higher electrical strength than any component thereof over a temperature range from about -20.degree. C. to -40.degree. C. to about +120.degree. C. to +140.degree. C., with the vapor pressure of the mixture at the highest temperature being about one to two atmospheres. Also, the mixing of low and high cost liquids to obtain a low cost liquid with a vapor with an electrical strength equivalent or better than the best vapor over a wide temperature range.
    • 一种具有高电强度的介电流体组合物,其特征在于与来自具有低蒸汽压的低温下的第一流体的蒸气混合的气体和来自具有低蒸汽压的低温下的第二流体的蒸汽,以实现具有 在约-20℃至-40℃至约+ 120℃至+ 140℃的温度范围内比其任何组分具有更高的电气强度,混合物的蒸气压在最高温度 约一至二个大气压。 此外,低成本和高成本液体的混合以获得具有相当于或优于宽温度范围内的最佳蒸气的电气强度的蒸汽的低成本液体。