ANNULAR FIBRE PREFORM AND METHOD OF PREPARING SAME
    76.
    发明公开
    ANNULAR FIBRE PREFORM AND METHOD OF PREPARING SAME 审中-公开
    RINGFÖRMIGERFASERVORFORMING UND VERFAHREN ZUR HERSTELLUNG DAVON

    公开(公告)号:EP2982789A1

    公开(公告)日:2016-02-10

    申请号:EP14794154.6

    申请日:2014-03-11

    发明人: MIAO, Yunliang

    IPC分类号: D04H1/4374 D04H1/46 B32B5/08

    摘要: Disclosed are an annular fibre preform and a method of preparing same. The preform is formed by superposing and needle-punching annular units (5) containing an annular composite fabric (4), and the annular composite fabric (4) is shaped by needle-punching sector-shaped fibrous fabric (3) of the same type as an annular fibre mesh tyre (1) in advance. The method of preparing a preform involves an annular fibrous fabric (2) of spliced sector-shaped fibrous fabric being needle-punched in advance with an annular fibre mesh tyre(1) and fixedly joined into an annular composite fabric (4), and then needle-punching and forming annular units (5) to realize the preparation of the annular fibrous preform. The present method effectively eliminates the occurrence of deformation and misplacement of sector-shaped spliced fibrous fabric during needle-punching at a later stage such that the uniformity and consistency between layers and within surfaces are good, and has advantages such as high fiber content, excellent mechanical performance, and a high utilization rate of raw material, so that the friction performance of friction material is improved after a C/C composite is formed, and the combination property is excellent. The method can be applied to the production of composite material preforms for aircraft brake discs, and can also be applied to the production of friction material preforms in baking systems of high-speed trains and high-end automobiles.

    摘要翻译: 公开了一种环形纤维预制件及其制备方法。 通过将包含环形复合织物(4)的环形单元(5)进行叠加和针刺来形成预制件,并且环形复合织物(4)通过针刺相同类型的扇形纤维织物(3)成形 作为环状纤维网状轮胎(1)。 制备预成型件的方法包括:预先用环形纤维网轮胎(1)针刺并且固定地连接到环形复合织物(4)中的拼接的扇形纤维织物的环形纤维织物(2),然后 针刺和成形环形单元(5),以实现环状纤维预制件的制备。 本方法有效地消除了在稍后的针刺期间扇形拼接纤维织物的变形和错位,使得层间和表面内的均匀性和一致性良好,并且具有纤维含量高,优异的优点 机械性能好,原料利用率高,使C / C复合材料形成后摩擦材料的摩擦性能得到改善,组合性能优异。 该方法可应用于制造用于飞机制动盘的复合材料预制件,并且还可用于在高速列车和高端汽车的烘烤系统中生产摩擦材料预成型件。