CERAMIC MATRIX COMPOSITES AND PROCESSES FOR THEIR PRODUCTION
    6.
    发明申请
    CERAMIC MATRIX COMPOSITES AND PROCESSES FOR THEIR PRODUCTION 审中-公开
    陶瓷基体复合材料及其生产工艺

    公开(公告)号:WO2016016388A1

    公开(公告)日:2016-02-04

    申请号:PCT/EP2015/067551

    申请日:2015-07-30

    IPC分类号: C04B35/632 C04B35/80

    摘要: The present invention provides a process for the preparation of a prepreg for a ceramic matrix composite material, said process comprising the steps of: a) impregnating an arrangement of ceramic fibers with a slurry of a ceramic powder, which slurry contains: 10 to 40 vol%, based on the total volume of the slurry, of the ceramic powder, 10 to 20 wt%, based on the total weight of the ceramic powder in the slurry, of glycerol, 0 to 2 wt%, based on the total weight of the ceramic powder in the slurry, of an organic binder, and water; b) reducing the water content in the slurry which is retained by the arrangement of ceramic fibers after impregnation so as to increase the volume ratio of the ceramic powder in the slurry and to provide a prepreg containing a slurry of a ceramic powder with a volume ratio of the ceramic powder of 45 vol% or more in the slurry. It further provides a prepreg obtainable from the process. In further aspects of the invention, laminates containing the above prepregs and a process for their production are provided. In yet a further aspect, the invention provides a ceramic matrix composite green body and a process for its preparation, and a process for the preparation of a ceramic matrix composite body, using the prepregs or the laminated prepregs in accordance with the invention.

    摘要翻译: 本发明提供一种制备陶瓷基复合材料的预浸料的方法,所述方法包括以下步骤:a)用陶瓷粉末浆料浸渍陶瓷纤维的布置,所述浆料含有:10至40体积% 基于浆料的总体积,基于浆料中的陶瓷粉末的总重量,陶瓷粉末的总体积为10至20重量%,甘油的重量百分比为0至2重量%,基于 浆料中的陶瓷粉末,有机粘合剂和水; b)降低在浸渍之后通过陶瓷纤维布置保持的浆料中的水分含量,以增加陶瓷粉末在浆料中的体积比,并提供含有体积比的陶瓷粉末的浆料的预浸料 的浆料中的45体积%以上的陶瓷粉末。 它还提供了可从该方法获得的预浸料。 在本发明的另外的方面,提供了含有上述预浸料的层压体及其生产方法。 在另一方面,本发明提供一种陶瓷基复合生坯及其制备方法,以及使用本发明的预浸料或层压预浸料制备陶瓷基复合体的方法。