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    Polysiloxazanes, silicon oxynitride fibers and processes for producing same
    5.
    发明授权
    Polysiloxazanes, silicon oxynitride fibers and processes for producing same 失效
    聚硅氧烷，氧氮化硅纤维及其制造方法

    公开(公告)号：US5166104A

    公开(公告)日：1992-11-24

    申请号：US756046

    申请日：1991-09-06

    申请人： Osamu Funayama ,  Mikiro Arai ,  Hayato Nishii ,  Takeshi Isoda

    发明人： Osamu Funayama ,  Mikiro Arai ,  Hayato Nishii ,  Takeshi Isoda

    IPC分类号： C04B35/589 ,  C08G77/54

    CPC分类号： C08G77/54 ,  C04B35/589

    摘要： Novel polysiloxazanes comprising [SiH.sub.2).sub.n NH-- and [SiH.sub.2).sub.m O-- as the main repeating units are provided. The polysiloxazanes are produced by reacting a dihalosilane or an adduct thereof with a Lewis base, with ammonia and water vapor or oxygen. From the polysiloxazane, novel silicon oxynitride shapes can be produced and the silicon oxynitride shapes are essentially composed of silicon, nitride (5 mol % or more) and oxygen (5 mol % or more).

    摘要翻译： 提供了以[SiH 2] nNH-和[SiH 2）mO-为主要重复单元的新型聚硅氧氮烷。 聚硅氧烷是通过使二氯硅烷或其加合物与路易斯碱反应，与氨和水蒸汽或氧气反应而制备的。 从聚硅氮烷可以制造新的氮氧化硅形状，氮氧化硅形状主要由硅，氮化物（5摩尔％以上）和氧（5摩尔％以上）组成。

    Reformed, inorganic polysilazane
    6.
    发明授权
    Reformed, inorganic polysilazane 失效
    改性无机聚硅氮烷

    公开(公告)号：US4933160A

    公开(公告)日：1990-06-12

    申请号：US323375

    申请日：1989-03-14

    申请人： Osamu Funayama ,  Mikiro Arai ,  Takeshi Isoda

    发明人： Osamu Funayama ,  Mikiro Arai ,  Takeshi Isoda

    IPC分类号： C08G77/62

    CPC分类号： C08G77/62

    摘要： A novel, reformed, inorganic polysilazane which is liquid or solid at room temperature and soluble in o-xylene at room temperature and which has (a) a number-average molecular weight of 200-500,000, (b) contents of Si, N and H of 50-70% by weight, 20-34% by weight and 5-9% by weight, respectively; and (c) --SiH.sub.2 -- and --SiH.sub.3 groups, the molar ratio of the --SiH.sub.2 -- groups to the --SiH.sub.3 groups being 2.0:1 to 8.4:1. The reformed polysilazane is obtained by reaction of a solution of a polysilazane in an organic base-containing solvent to polycondense the polysilazane.

    摘要翻译： 一种新型的改性的无机聚硅氮烷，其在室温下为液体或固体，并且在室温下可溶于邻二甲苯，其具有（a）数均分子量为200-500,000，（b）Si，N和 H为50-70重量％，20-34重量％和5-9重量％ 和（c）-SiH 2 - 和-SiH 3基团，-SiH 2 - 基团与-SiH 3基团的摩尔比为2.0:1至8.4:1。 重整的聚硅氮烷通过聚硅氮烷在含有机碱的溶剂中的溶液与聚硅氮烷缩聚得到。

    High-purity silicon nitride fibers
    8.
    发明授权
    High-purity silicon nitride fibers 失效
    高纯氮化硅纤维

    公开(公告)号：US4818611A

    公开(公告)日：1989-04-04

    申请号：US930803

    申请日：1986-11-13

    申请人： Mikiro Arai ,  Osamu Funayama ,  Hayato Nishii ,  Takeshi Isoda

    发明人： Mikiro Arai ,  Osamu Funayama ,  Hayato Nishii ,  Takeshi Isoda

    IPC分类号： D01F9/08 ,  C01B21/068 ,  C04B35/589 ,  D01F9/10 ,  D02G3/00

    CPC分类号： D01F9/10 ,  C04B35/589 ,  Y10T428/2904 ,  Y10T428/2913

    摘要： Silicon nitride fibers having a carbon content of 5 weight percent or less have high heat insulating properties and favorable mechanical properties and are useful as heat resistant, highly insulating materials or reinforcing agents for composite materials, particularly in the aerospace industry. Such high purity silicon nitride fibers are produced by spinning a solution of perhydropolysilazanes, an inert solvent and a spinning agent into fibers, preferably continuous fibers, and firing the spun fibers at 800.degree. to 1300.degree. C. in an inert atmosphere to form silicon nitride fibers of high purity.

    摘要翻译： 碳含量为5重量％以下的氮化硅纤维具有高绝热性和良好的机械性能，并且可用作复合材料特别是在航天工业中的耐热，高绝缘性材料或增强剂。 通过将全氢聚硅氮烷，惰性溶剂和纺丝剂的溶液旋转到纤维中，优选连续纤维，并在惰性气氛中在800〜1300℃下焙烧纺丝纤维，从而形成氮化硅 高纯度纤维。