Process for the preparation of carbon fibers having structure reflected
in cross sectional view thereof as random mosaic
    4.
    发明授权
    Process for the preparation of carbon fibers having structure reflected in cross sectional view thereof as random mosaic 失效
    具有以其横截面图反映的结构的碳纤维的制备方法为随机镶嵌

    公开(公告)号:US4746470A

    公开(公告)日:1988-05-24

    申请号:US601122

    申请日:1984-04-18

    CPC分类号: D01F9/00 D01F9/145

    摘要: A process for preparing carbon fibers wherein carbon fibers are prepared from the mesophase-pitch containing not more than 80% by weight of a quinoline-insoluble component and showing, under a polarization microscope, more than 70% of optically anisotropic region, comprising the steps of subjecting a mesophase-pitch showing a viscosity of 10 to 100 poise at a temperature of spinning of 330.degree. to 450.degree. C., to rotating-centrifugal-spinning in a rotating-centrifugal spinning machine with a peripheral velocity of rotating nozzle thereof of 300 to 1000 m/min and exposing the thus spun fibers of the mesophase pitch to a flow of a gas spouting into a spinning direction at a temperature of 280.degree. to 400.degree. C. and at a linear velocity of 50 to 200 m/sec, thereby preparing carbon fibers showing a random-mosaic structural pattern in cross section thereof perpendicular to fiber axis.

    摘要翻译: 一种制备碳纤维的方法,其中碳纤维由含有不超过80重量%的喹啉不溶组分的中间相沥青制备,并且在偏振显微镜下显示超过70%的光学各向异性区域,其包括步骤 在330〜450℃的纺丝温度下使粘度为10〜100泊的中间相沥青进行旋转离心纺丝,旋转离心纺丝机的圆周速度为 300〜1000m /分钟,将这样纺丝的中间相沥青的纤维在280℃〜400℃的温度和50〜200m /秒的线速度下喷射到纺丝方向的气体流 从而制备在垂直于纤维轴线的横截面上显示随机马赛克结构图案的碳纤维。