Fibers excellent in magnetic field responsiveness and conductivity and product consisting of it
    68.
    发明申请
    Fibers excellent in magnetic field responsiveness and conductivity and product consisting of it 失效
    具有优异的磁场响应性和导电性的纤维和由其组成的产品

    公开(公告)号:US20070003761A1

    公开(公告)日:2007-01-04

    申请号:US10556545

    申请日:2004-05-18

    Abstract: The present invention relates to fibers having excellent responsiveness to magnetic fields and excellent conductivity, as well as articles made of the same. In particular, the present invention relates to fibers having magnetic properties and conductivity, which are excellent in resistance to heat and responsiveness to magnetic fields in a unit where a magnetic field is applied, as well as in stability of conductivity when the humidity varies. In addition, the present invention relates to textiles using such fibers, knitted articles and cloths, such as non-woven cloths, short fibers, brush rollers made of short fibers, and electro-photographic apparatuses using brush rollers. The fibers of the present invention are fibers having excellent responsiveness to magnetic field and conductivity, made of a polymer having fiber forming functions which contains magnetic material particles in spherical form having a saturation magnetic flux density of no less than 0.5 tesla. According to the preferred aspects of the present invention, (a) the average particle diameter of the above described magnetic material particles in spherical form is no greater than 5 μm, (b) the coercive force of the above described magnetic material particles in spherical form is no greater than 1000 A/m, and (c) the above described fibers are complex fibers which are made of magnetic layers that contain 20 wt % to 90 wt % of the above described magnetic material particles in spherical form, and protective layers where the content of the above described magnetic material particles in spherical form is less than 20 wt %.

    Abstract translation: 本发明涉及对磁场的响应性优异,导电性优异的纤维及其制品。 特别地,本发明涉及具有磁特性和导电性的纤维,它们在施加磁场的单元中具有优异的耐热性和对磁场的响应性,以及当湿度变化时的导电性的稳定性。 此外,本发明涉及使用这种纤维的织物,编织物和布,例如无纺布,短纤维,由短纤维制成的刷辊,以及使用刷辊的电子照相装置。 本发明的纤维是由具有纤维形成功能的聚合物制成的对磁场和导电性的响应性优异的纤维,该聚合物含有饱和磁通密度不小于0.5特斯拉的球形磁性材料颗粒。 根据本发明的优选方面,(a)上述磁性体颗粒的球形平均粒径不大于5μm,(b)上述磁性材料颗粒的球形矫顽力 不大于1000A / m,(c)上述纤维是由磁性层制成的复合纤维,该磁性层含有上述球形磁性材料颗粒的20重量%至90重量%,以及保护层, 上述磁性材料颗粒的球形含量小于20重量%。

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