Magnetic fluid composition
    3.
    发明授权
    Magnetic fluid composition 失效
    磁性液体组成

    公开(公告)号:US5487840A

    公开(公告)日:1996-01-30

    申请号:US177471

    申请日:1994-01-05

    CPC分类号: H01F1/447 H01F1/44

    摘要: A magnetic fluid composition comprising a low-volatile organic solvent as a carrier having dispersed therein ferromagnetic fine particles coated with a surface active agent having a lipophilic group having affinity to said low-volatile organic solvent, and a thixotropy-imparting agent is disclosed. The composition is prevented from splashing for an extended period of time even when used in a magnetic fluid-sealed apparatus operated at such a high speed that the rotational speed of the sealing part is 2 m/sec or higher.

    摘要翻译: 本发明公开了一种磁性液体组合物,其包含作为载体的低挥发性有机溶剂,其中分散有涂覆有具有对所述低挥发性有机溶剂具有亲和性的亲油基团的表面活性剂的铁磁细颗粒和触变性赋予剂。 即使在以密封部的旋转速度为2m /秒以上的高速度操作的磁性流体密封装置中使用时,防止组合物长时间飞溅。

    Rolling Bearing
    5.
    发明授权
    Rolling Bearing 有权
    滚动轴承

    公开(公告)号:US07234872B2

    公开(公告)日:2007-06-26

    申请号:US10158171

    申请日:2002-05-31

    IPC分类号: F16C33/66

    摘要: A rolling bearing includes a plurality of rolling elements movably retained at almost the same interval between an inner ring and an outer ring with a cage made of synthetic resin provided interposed therebetween. The rolling bearing further includes, an oil film made of a lubricant, and a grease containing a synthetic oil as a base oil enclosed therein. The lubricant contains at least one additive selected from the group consisting of organic aliphatic acid, organic aliphatic acid derivative and organic phosphorus compound incorporated in a synthetic oil in a proportion of from 0.5 to 10% by weight formed on the surface of the raceways of the inner and outer rings and the surface of the rolling elements, and a grease containing a synthetic oil as a base oil enclosed therein.

    摘要翻译: 一种滚动轴承包括多个滚动元件,该多个滚动元件通过设置在它们之间的由合成树脂制成的保持架在内圈和外圈之间以几乎相同的间隔可移动地保持。 滚动轴承还包括由润滑剂制成的油膜和包含合成油作为基础油的润滑脂。 所述润滑剂含有至少一种选自有机脂肪酸,有机脂肪酸衍生物和有机磷化合物的添加剂,所述有机脂肪酸衍生物和合成油中的有机磷化合物以0.5至10重量%的比例形成在合成油的轨道的表面上 内圈和外圈以及滚动体的表面,以及包含合成油作为基础油的润滑脂。

    Electroconductive magnetic fluid composition and process for producing
the same
    10.
    发明授权
    Electroconductive magnetic fluid composition and process for producing the same 失效
    电磁磁性液体组合物及其制造方法

    公开(公告)号:US5135672A

    公开(公告)日:1992-08-04

    申请号:US514974

    申请日:1990-04-26

    CPC分类号: H01F1/44

    摘要: An electroconductive magnetic fluid composition is disclosed comprising a low volatility organic solvent as a carrier, a surface active agent having an lipophilic group with a strong affinity for the solvent, fine ferromagnetic particles coated at the surface thereof with the surface active agent and dispersed in the organic solvent, and a tertiary amine and an organic acid as an electrifying agent. The electroconductive magnetic fluid composition of the present invention is produced, preferably, including the steps of admixing fine ferromagnetic particles, a low boiling point organic solvent an surface active agent and separating to remove any fine particles of poor dispersibility.

    摘要翻译: 公开了一种导电磁性流体组合物,其包含作为载体的低挥发性有机溶剂,具有对溶剂具有强亲和力的亲油基团的表面活性剂,在其表面用表面活性剂涂布的细小铁磁颗粒并分散在 有机溶剂,叔胺和有机酸作为带电剂。 本发明的导电性磁性液体组合物优选地包括以下步骤:将细的铁磁颗粒,低沸点有机溶剂和表面活性剂混合并分离以除去分散性差的细颗粒。