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    CARBON FIBER PRECURSOR ACRYLIC FIBER BUNDLE, METHOD FOR THERMALLY OXIDIZING PART THEREOF, THERMAL OXIDATION OVEN, AND PROCESS FOR PRODUCING CARBON FIBER BUNDLE
    1.
    发明申请
    CARBON FIBER PRECURSOR ACRYLIC FIBER BUNDLE, METHOD FOR THERMALLY OXIDIZING PART THEREOF, THERMAL OXIDATION OVEN, AND PROCESS FOR PRODUCING CARBON FIBER BUNDLE 有权
    碳纤维前体丙烯纤维布，热氧化方法，热氧化炉，以及生产碳纤维布的方法

    公开(公告)号：US20150110705A1

    公开(公告)日：2015-04-23

    申请号：US14391802

    申请日：2013-04-12

    申请人： MITSUBISHI RAYON CO., LTD.

    发明人： Tadanobu Ikeda ,  Tadao Samejima ,  Youji Hatanaka ,  Tetsu Yasunami

    IPC分类号： D01F9/21 ,  F27D7/04 ,  F27D7/06

    CPC分类号： D01F9/21 ,  B65H69/063 ,  D01F6/18 ,  D01F9/22 ,  D01F9/225 ,  D01F9/328 ,  D04H3/007 ,  D04H3/04 ,  D10B2101/12 ,  F27B17/0016 ,  F27D7/04 ,  F27D7/06 ,  F27D2007/063

    摘要： Provided is a carbon-fiber-precursor acrylic fiber bundle which can smoothly pass through a flame-resistance impartation step and a carbonization step. The carbon-fiber-precursor acrylic fiber bundle has a high-density part as a portion thereof, wherein the high-density part satisfies the following requirements (A) and (B). Requirement A: The high-density part has a maximum fiber density ρmax of 1.33 g/cm3 or higher. Requirement B: The portion extending between an intermediate-density point and a maximum-density-region arrival point has an increase in fiber density of 1.3×10−2 g/cm3 or less per 10 mm of the fiber bundle length. The term “intermediate-density point” means the site which has a density ρm that is intermediate between the fiber density ρo of the non-high-density part and the maximum fiber density ρmax. The term “maximum-density-region arrival point” means the site Pr at which the increase in fiber density per 10 mm of the fiber bundle length becomes 1.0×10−3 g/cm3 or less, the increase in fiber density being represented by (ρr+0−ρr)/5 determined from a measurement in which density measurement points beginning with the point where the density begins to increase and located at intervals of 50 mm are successively examined for fiber density (ρ1, ρ2, . . . , ρr, . . . , ρn).

    摘要翻译： 提供一种碳纤维前体丙烯酸系纤维束，能够顺利地通过耐火性赋予工序和碳化工序。 碳纤维前体丙烯酸系纤维束的高密度部分作为其一部分，其中高密度部分满足以下要求（A）和（B）。 要求A：高密度部分的最大纤维密度最大为1.33 g / cm3或更高。 要求B：在中间密度点和最大密度区域到达点之间延伸的部分纤维密度在每10毫米的纤维束长度上增加1.3×10-2克/厘米3或更小。 术语“中间密度点”是指具有非高密度部分的纤维密度和最大纤维密度和最大纤维密度之间中间密度的部位。 术语“最大密度区域到达点”是指纤维束长度每10mm的纤维密度增加为1.0×10 -3 g / cm 3以下的位置Pr，纤维密度的增加由 （＆rgr; r + 0-＆rgr; r）/ 5，其中从密度开始增加的点开始的密度测量点和以50mm的间隔定位的测量被依次检查， ＆rgr; 2，...，＆rgr; r，...，＆rgr; n）。