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24 条记录 (耗时 0.02 秒)

    Method for manufacture of activated carbon fiber
    1.
    发明授权
    Method for manufacture of activated carbon fiber 失效
    活性炭纤维的制造方法

    公开(公告)号：US4412937A

    公开(公告)日：1983-11-01

    申请号：US371164

    申请日：1982-04-23

    申请人： Shigeru Ikegami ,  Minoru Hirai ,  Kazuo Izumi ,  Kenji Shimazaki

    发明人： Shigeru Ikegami ,  Minoru Hirai ,  Kazuo Izumi ,  Kenji Shimazaki

    IPC分类号： C01B31/08 ,  D01F9/22 ,  B01J37/28 ,  B01J37/00 ,  D01F9/12

    CPC分类号： D01F9/22 ,  C01B31/089

    摘要： A method for manufacturing activated carbon fibers is disclosed. The method is comprised of the steps of:(1) causing an acrylic fiber to contain therein a treating agent selected from the group consisting of phosphorus and boron compounds in a concentration of 0.01 to 0.3% by weight as phosphorus or boron based on the weight of the fiber;(2) preoxidizing the acrylic fiber in an oxidizing atmosphere at a temperature exceeding 200.degree. C. and giving a core ratio of 18% until the amount of bonded oxygen becomes not less than 15% by weight based on the weight of the fiber thereby producing a preoxidized fiber;(3) adjusting the concentration of the treating agent in the preoxidized fiber to a level in the range of 0.04 to 1% by weight based on the thus obtained preoxidized fiber; and(4) thereafter activating the fiber at a temperature in the range of 900.degree. to 1,300.degree. C. The resulting fiber has improved high strength, high adsorbing ability and high processibility.

    摘要翻译： 公开了一种制造活性炭纤维的方法。 该方法包括以下步骤：（1）使丙烯酸纤维含有选自磷和硼化合物的处理剂，其浓度为0.01至0.3重量％，作为磷或硼，基于重量 的纤维; （2）在超过200℃的氧化气氛中对丙烯酸类纤维进行预氧化，得到纤芯率为18％，直至接合氧量相对于纤维重量为15重量％以上，由此生成 预氧化纤维; （3）基于由此获得的预氧化纤维，将预氧化纤维中的处理剂的浓度调节至0.04至1重量％范围内的水平; （4）此后在900〜1300℃的温度下活化纤维。所得纤维具有改善的高强度，高吸附能力和高加工性。

    Activated carbon fiber spun yarn
    5.
    发明授权
    Activated carbon fiber spun yarn 失效
    活性炭纤维纺纱

    公开(公告)号：US4520623A

    公开(公告)日：1985-06-04

    申请号：US514898

    申请日：1983-07-18

    申请人： Hiroyasu Ogawa ,  Kazuo Izumi ,  Kenji Shimazaki

    发明人： Hiroyasu Ogawa ,  Kazuo Izumi ,  Kenji Shimazaki

    IPC分类号： D02G3/16 ,  B01J20/28 ,  C01B31/08 ,  D01F9/22 ,  D02G3/02

    CPC分类号： D01F9/22 ,  Y10T428/2918

    摘要： An activated carbon fiber spun yarn having excellent workability and adsorptive property is disclosed. The activated carbon fiber spun yarn comprising activated carbon fibers having a specific surface area of 500 to 1,500 m.sup.2 /g, a ductility of at least 0.5%, and a tensile strength of at least 10 kg/mm.sup.2 and derived from acrylonitrile-based fibers. The spun yarn has a twist coefficient of 30 to 60.

    摘要翻译： 公开了一种具有优异的加工性和吸附性能的活性炭纤维纱。 活性炭纤维细纱包含比表面积为500〜1500m2 / g，延展性为0.5％以上的活性炭纤维，拉伸强度为10kg / mm 2以上，来自丙烯腈系纤维。 纺纱的扭曲系数为30〜60。

    Filter
    7.
    发明授权
    Filter 失效
    过滤

    公开(公告)号：US4772455A

    公开(公告)日：1988-09-20

    申请号：US720316

    申请日：1985-04-05

    申请人： Kazuo Izumi ,  Kenzi Shimazaki

    发明人： Kazuo Izumi ,  Kenzi Shimazaki

    IPC分类号： B01D53/04 ,  B01D53/02 ,  B01D53/46 ,  B01J20/20 ,  B01J20/28 ,  B01J23/70 ,  B01J31/22 ,  B01D53/34 ,  B01D25/08 ,  B01D37/02 ,  B01D53/36

    CPC分类号： B01D53/02 ,  Y10T428/249986 ,  Y10T428/2918

    摘要： A filter composed of a mesh structure substrate having deposited thereon and therein activated carbon fiber treated with an alkali and having a length within the range of from 5 to 1,000.mu., wherein the mesh structure substrate has an average cell diameter 3 to 100 times the length of the activated carbon fiber, wherein the activated carbon fiber is adhered to the substrate by a binder, and wherein the activated carbon fiber is deposited on and in the substrate by impregnating the substrate with a dispersion obtained by dispersing activated carbon fiber in a dispersion or solution of a binder, and drying methods for forming and using the same are also disclosed.

    摘要翻译： 一种过滤器，其由沉积在其上的网状结构基材和由碱处理并且长度在5至1,000μm范围内的活性炭纤维组成，其中网状结构基材的平均泡孔直径为长度的3至100倍 的活性炭纤维，其中活性碳纤维通过粘合剂粘合到基材上，并且其中活性碳纤维通过用分散体中分散活性碳纤维而获得的分散体浸渍基材而沉积在基材上和内部， 还公开了粘合剂的溶液，以及其形成和使用的干燥方法。

    Digital attenuator for compressed PCM signals
    8.
    发明授权
    Digital attenuator for compressed PCM signals 失效
    用于压缩PCM信号的数字衰减器

    公开(公告)号：US4181970A

    公开(公告)日：1980-01-01

    申请号：US910065

    申请日：1978-05-26

    申请人： Kazuto Izumi ,  Kazuo Izumi

    发明人： Kazuto Izumi ,  Kazuo Izumi

    IPC分类号： G06F7/00 ,  H03G3/00 ,  H03H17/00 ,  H04B1/64 ,  H04B3/20 ,  G06F7/39

    CPC分类号： H03G3/002 ,  G06F7/00 ,  H03H17/0054 ,  H04B1/64 ,  H04B3/20

    摘要： A digital attenuator is used in a Digital Echo Suppressor to attenuate a PCM signal. This is done to decrease the influence of echo caused by both long time delay and impedance mismatching at a hybrid coil.The digital attenuator attenuates the PCM signal which is compressed by .mu. Law, when an attenuation control signal generated in the digital echo suppressor is applied to the digital attenuator. It passes the PCM signal through without attenuating it when the attenuation control signal is not applied.The attenuator consists of a plurality of pattern shift circuits and an adder or plural number of adders and a selector.The principle of the attenuation is described hereinafter;The attenuation quantity is attained from Eq. 1.Pout=.alpha. Pin (1)wherePin=input PCM signal compressed by .mu. Law.Pout=attenuated output PCM signal,.alpha.=attenuation parameter which is a real number satisfying the condition 0

    摘要翻译： 数字衰减器用于数字回波抑制器以衰减PCM信号。 这样做可以减少混合线圈长时间延迟和阻抗不匹配引起的回波的影响。 当数字回波抑制器中产生的衰减控制信号被施加到数字衰减器时，数字衰减器衰减被μ法压缩的PCM信号。 当不施加衰减控制信号时，PCM通过PCM信号而不使其衰减。 衰减器由多个图案移位电路和加法器或多个加法器和选择器组成。 下文描述衰减原理; 衰减量由公式 1. Pout = alpha引脚（1）其中Pin =由mu法压缩的输入PCM信号。 Pout =衰减输出PCM信号，α=衰减参数，其是满足条件0 <α<1的实数，α是从1/21，1/22，1/23，1/24， 。 。 。 ，1 / 2n。 （n：移位数）数字衰减器的特征是衰减特性根据输入的PCM信号电平而变化。