Carbonization of cellulosic fibrous materials in the presence of an organosilicon compound
    3.
    发明授权
    Carbonization of cellulosic fibrous materials in the presence of an organosilicon compound 有权
    在有机硅化合物存在下,纤维素纤维材料的碳化

    公开(公告)号:US07226639B2

    公开(公告)日:2007-06-05

    申请号:US10148778

    申请日:2000-12-05

    IPC分类号: B05D3/02

    CPC分类号: D01F9/16 D01F11/14

    摘要: The subject of the present invention is a method of obtaining fibrous carbon materials by carbonization of cellulosic fibrous materials carried out continuously or batchwise in the presence of at least one organosilicon compound. Characteristically, said organosilicon compound is chosen from the family of crosslinked, cyclic or branched oligomers and resins, which have a number-average molecular mass of between 500 and 10 000 and which consist of units of formula SiO4 (called Q4 units) and units of formula SiOxRy (OR′)z.

    摘要翻译: 本发明的主题是通过在至少一种有机硅化合物的存在下连续或间歇进行的纤维素纤维材料的碳化获得纤维状碳材料的方法。 特征地,所述有机硅化合物选自交联的,环状的或支链的低聚物和树脂的族,其数均分子量为500至10000,并且由式SiO 4的单元组成。 (称为Q 4 S单元)和式SiO x X(OR')z的单元。

    Preparation of mesophasic polyborazylene mesophasic polyborazylene and use as a BN precursor
    4.
    发明授权
    Preparation of mesophasic polyborazylene mesophasic polyborazylene and use as a BN precursor 失效
    制备中间聚亚烷基亚烃基亚烷基亚烷基并用作BN前体

    公开(公告)号:US06277348B1

    公开(公告)日:2001-08-21

    申请号:US09446743

    申请日:1999-12-27

    IPC分类号: C01B21064

    摘要: The present invention relates to: a novel process for the preparation of mesophasic polyborazylene. Said process is of particular value in that it affords a quality product from an appropriate polyborazylene, rapidly (virtually instantaneously), reproducibly and with a good yield. Furthermore, said process is easy to carry out. Said process comprises the preparation of polyborazylene by the polycondensation of borazine in a closed reactor and the addition, to said polyborazylene obtained by polycondensation, of a solvent selected from aromatic solvents, borazine solvents and mixtures thereof, mesophasic polyborazylene which is novel in that it is in the presence of a particular solvent and/or by virtue of its quality, the use of said polyborazylene of the invention, and/or prepared according to the invention, as a boron nitride precursor.

    摘要翻译: 本发明涉及:用于制备中间性聚亚烷基亚砜的新方法。 所述方法具有特别的价值,因为它可以快速(几乎瞬间),可重复地且以良好的产率从合适的聚二氮烯基中提供优质的产品。 此外,所述方法容易进行。 所述方法包括通过闭环反应器中环硼氮烷的缩聚制备聚二氮烯烃,并且通过缩聚获得的所述聚二亚乙烯基,将选自芳族溶剂,环硼氮烷溶剂及其混合物的溶剂添加到中间体聚双亚甲基中, 在特定溶剂的存在下和/或通过其质量使用本发明的所述聚亚烷基亚芳基和/或根据本发明制备的氮化硼前体。

    METHOD FOR PROCESSING CERAMIC FIBERS
    6.
    发明申请
    METHOD FOR PROCESSING CERAMIC FIBERS 有权
    加工陶瓷纤维的方法

    公开(公告)号:US20120020863A1

    公开(公告)日:2012-01-26

    申请号:US13139844

    申请日:2009-12-15

    IPC分类号: C01B31/36

    摘要: A method of treating ceramic fibers based on metal carbide, the method including a first reagent gas heat treatment performed with at least one first reagent gas of the halogen type that chemically transforms the surface of the fiber to obtain a surface layer constituted mainly of carbon, and a second reagent gas heat treatment performed with at least one second reagent gas that eliminates the surface layer formed during the chemical transformation.

    摘要翻译: 一种处理基于金属碳化物的陶瓷纤维的方法,所述方法包括:用至少一种卤素型的第一反应气体进行第一反应气体热处理,所述第一反应气体化学转化所述纤维的表面,得到主要由碳构成的表面层, 以及用至少一种第二反应气体进行的第二反应气体热处理,其消除了在化学转化期间形成的表面层。

    Obtaining fiber textures of carbon by carbonizing a cellulose precursor
    7.
    发明授权
    Obtaining fiber textures of carbon by carbonizing a cellulose precursor 有权
    通过碳化纤维素前体获得碳纤维织构

    公开(公告)号:US07879271B2

    公开(公告)日:2011-02-01

    申请号:US11792451

    申请日:2005-12-06

    IPC分类号: D01F9/14

    CPC分类号: D01F9/16

    摘要: A method of obtaining fiber textures of carbon from a cellulose precursor includes the steps of: spinning cellulose filaments (12) from a viscose solution or a cellulose solution; subjecting the cellulose filaments to washing in water (21); impregnating the washed and non-dried cellulose filaments with an aqueous emulsion (41) of at least one organosilicon additive; drying the impregnated cellulose filaments; and obtaining a fiber texture made up of impregnated and dried cellulose filaments prior to carbonization.

    摘要翻译: 从纤维素前体获得碳的纤维织构的方法包括以下步骤:将纤维素丝(12)从粘胶溶液或纤维素溶液中纺出; 使纤维素长丝在水中洗涤(21); 用至少一种有机硅添加剂的水性乳液(41)浸渍洗涤和未干燥的纤维素长丝; 干燥浸渍的纤维素丝; 并且在碳化之前获得由浸渍和干燥的纤维素长丝组成的纤维织构。