Composite sheet electrode
    3.
    发明授权
    Composite sheet electrode 失效
    复合片电极

    公开(公告)号:US5489492A

    公开(公告)日:1996-02-06

    申请号:US285121

    申请日:1994-08-01

    摘要: The present invention provides a composite sheet electrode which has high strength, excellent current collecting properties and which is used efficiently as an active material for an electrode. The electrode has excellent discharge capacities and can be easily formed into an electrode terminal. A cell employing this electrode is also disclosed. The invention also provides a composite sheet electrode having a porosity of 20 to 80% containing 5 to 95% by weight of an active material of an electrode, 1 to 50% by weight of a current collecting material and heat fusible short fibers. The present invention also provides a composite sheet electrode having a porosity of 20 to 80%, which is made up of a composite sheet containing 5 to 95% by weight of an active material as an electrode and 5 to 95% by weight of heat fusible short fibers, as well as a current collecting material layer formed on said composite sheet. The present invention further provides a cell employing the latter-mentioned composite sheet electrode.

    摘要翻译: 本发明提供一种复合片状电极,它具有高强度,优异的集电性能,并被有效地用作电极的活性材料。 电极具有优异的放电容量,并且可以容易地形成电极端子。 还公开了采用该电极的电池。 本发明还提供一种孔隙率为20〜80%的复合片状电极,含有5〜95重量%的电极活性物质,1〜50重量%的电流收集材料和热熔短纤维。 本发明还提供一种孔隙率为20〜80%的复合片状电极,其由含有5〜95重量%的作为电极的活性物质和5〜95重量%的热熔体的复合片材构成 短纤维,以及形成在所述复合片材上的集电材料层。 本发明还提供一种使用后者的复合片电极的电池。

    Spherical particles of thermosetting phenolic resin and process for
producing the same
    7.
    发明授权
    Spherical particles of thermosetting phenolic resin and process for producing the same 失效
    热固性酚醛树脂的球形颗粒及其制备方法

    公开(公告)号:US4839445A

    公开(公告)日:1989-06-13

    申请号:US141167

    申请日:1988-01-06

    CPC分类号: C08J3/16 C08J2361/06

    摘要: The present invention relates to a process for producing spherical thermosetting phenolic resin particles having a size of no larger than about 1,000 microns, and the spherical thermosetting phenolic resin particles produced by this process.In accordance with the process of the present invention, a novolak resin, and a nitrogenous basic compound, and, optionally, an aldehyde, are reacted while they are suspended in an aqueous medium in the presence of a suspension stabilizer.The thermosetting phenolic resin produced by the process of the present invention not only displays superior thermal curing characteristics during molding; the cured product fabricated by molding this resin also exhibits good physical properties such as improved mechanical strength and heat resistance. Therefore, the spherical thermosetting phenolic resin particles produced by the process of the present invention can be extensively used as molding materials, binders, adhesives, and in many other applications.

    摘要翻译: 本发明涉及一种制造尺寸不大于约1,000微米的球形热固性酚醛树脂颗粒的方法和通过该方法制备的球形热固性酚醛树脂颗粒。 根据本发明的方法,在悬浮稳定剂存在下将酚醛清漆树脂和含氮碱性化合物以及任选的醛反应在水性介质中。 通过本发明的方法制备的热固性酚醛树脂不仅在成型期间显示出优异的热固化特性; 通过模塑该树脂制造的固化产物也表现出良好的物理性能,例如改进的机械强度和耐热性。 因此,通过本发明的方法制造的球形热固性酚醛树脂颗粒可以广泛用作模塑材料,粘合剂,粘合剂以及许多其它应用。

    PTC element and process for producing the same
    9.
    发明授权
    PTC element and process for producing the same 失效
    PTC元件及其制造方法

    公开(公告)号:US5817423A

    公开(公告)日:1998-10-06

    申请号:US607636

    申请日:1996-02-27

    摘要: A PTC element comprising a conductive sheet of a crystalline polyolefin matrix and a conductive filler, having provided on both sides thereof an electrode of a metallic foil, the PTC element having a resistivity at 20.degree. C. (.rho..sub.20) of not more than 1.8 .OMEGA..multidot.cm, a peak resistivity (.rho..sub.p) of not less than 2.0.times.10.sup.6 .OMEGA..multidot.cm, and a temperature difference �T.sub.a (0.degree.C.)-T.sub.b (.degree.C.)! of not greater than 10.degree. C., wherein T.sub.a (.degree.C.) is a temperature at which the resistivity is 10.sup.6 times the resistivity at 20.degree. C. (.rho..sub.20) and T.sub.b (.degree.C.) is a temperature at which the resistivity is 10 times the resistivity at 20.degree. C. (.rho..sub.20). The PTC element is produced by a process comprising mixing a crystalline polyolefin and a conductive filler, molding the mixture into a conductive sheet, press bonding under heat a metallic foil to both sides of the conductive sheet, and repeatedly subjecting the conductive sheet to a heating and cooling cycle consisting of heating at a temperature of not lower than (the melting point of the crystalline polyolefin minus 5.degree. C.) and then cooling to a temperature lower than (the melting point of the crystalline polyolefin minus 5.degree. C.). The PTC elements exhibit an extremely low resistivity at 20.degree. C. and a high resistivity at a peak temperature, showing a very steep increase in resistance in a narrow temperature range.

    摘要翻译: 一种PTC元件,包括结晶聚烯烃基质和导电填料的导电片,其两侧均设有金属箔的电极,PTC元件的电阻率在20℃(rho 20)不大于1.8 OMEGA xcm,峰值电阻率(rho p)不小于2.0×10 6欧姆×xcm,温度差[Ta(0℃)-Tb(℃)]为10℃以下,其中Ta (℃)是电阻率为20℃时电阻率的106倍的温度(rho 20),Tb(℃)是电阻率为20℃电阻率10倍的温度。 (rho 20)。 PTC元件通过包括混合结晶聚烯烃和导电填料的方法制备,将该混合物成型为导电片,在导热片的两侧将金属箔加热压接,并重复地对导电片进行加热 和冷却循环由不低于(结晶聚烯烃的熔点减去5℃)的温度加热,然后冷却到低于(结晶聚烯烃的熔点减去5℃)的温度。 PTC元件在20℃下表现出非常低的电阻率,在峰值温度下表现出高电阻率,表现出在窄温度范围内电阻非常陡峭的增加。