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    • 3. 发明授权
    • Elastic-wave filter device having a band-pass filter and a band-reject filter
    • 具有带通滤波器和带阻滤波器的弹性波滤波器装置
    • US08410869B2
    • 2013-04-02
    • US13589202
    • 2012-08-20
    • Katsuhito OmoteYoshihiro Iwasaki
    • Katsuhito OmoteYoshihiro Iwasaki
    • H03H9/54H03H9/64
    • H03H9/6433
    • In an elastic-wave filter device that includes a band-pass filter and a band-eliminate filter connected to the band-pass filter, insertion loss in a pass band is significantly reduced and attenuation in a stop band is significantly increased. The elastic-wave filter device has a pass band and a stop band at frequencies higher than the pass band. The band-pass filter and the first band-eliminate filter are connected in series between an input terminal and an output terminal. A first parallel-arm resonator of the first band-eliminate filter includes a first resonance frequency in the stop band. A second parallel-arm resonator includes a second resonance frequency in the stop band, the second resonance frequency being higher than the first resonance frequency. An impedance value of the first parallel-arm resonator is larger than an impedance value of the second parallel-arm resonator.
    • 在包括带通滤波器和连接到带通滤波器的带通滤波器的弹性波滤波器装置中,通带中的插入损耗显着降低,而阻带中的衰减明显增加。 弹性波滤波器装置的通带和阻带的频率高于通带。 带通滤波器和第一带通滤波器串联连接在输入端和输出端之间。 第一带通滤波器的第一并联臂谐振器包括阻带中的第一谐振频率。 第二并联臂谐振器包括阻带中的第二谐振频率,第二谐振频率高于第一谐振频率。 第一并联臂谐振器的阻抗值大于第二并联臂谐振器的阻抗值。
    • 6. 发明申请
    • POLYPROPYLENE FIBER, METHOD OF PRODUCING THE SAME AND UTILIZATION OF THE SAME
    • 聚丙烯纤维,其制造方法及其利用
    • US20100173547A1
    • 2010-07-08
    • US12532898
    • 2008-03-24
    • Takashi KatayamaYoshihiro IwasakiMasakazu Nishiyama
    • Takashi KatayamaYoshihiro IwasakiMasakazu Nishiyama
    • B32B27/12D02G3/02D02G3/22D01D5/12C08F110/06
    • D01F6/06B29K2023/12B29K2223/12B29L2031/707C04B16/0633C04B28/02C08L23/10D02J1/22D04H1/4291D07B1/02D07B2201/2006D07B2201/2007D07B2201/2009D07B2205/201Y10T428/29Y10T428/2913Y10T428/2976Y10T442/10Y10T442/3854Y10T442/40Y10T442/674C08L2666/02D07B2801/10
    • The present invention aims to provide a polypropylene fiber (PP fiber) excellent in strength, heat resistance, and water-absorption properties, a method of producing the same, and a hydraulic composition, a rope, a sheet-shaped fiber structure, and a composite material with an organic polymer each using the PP fiber. The present invention provides: a PP fiber having a fiber strength of 7 cN/dtex or more and having either or both of (i) DSC properties such that the endothermic peak shape by DSC is a single shape having a half width of 10° C. or lower and the melt enthalpy change (AH) is 125 J/g and (ii) irregular properties such that the single fiber fineness is 0.1 to 3 dtex and irregularities are formed on the surface, the irregularities having an average interval of 6.5 to 20 μm and an average height of 0.35 to 1 μm as a result of alternate presence of a protruded portion having a large diameter and a non-protruded portion having a small diameter along its fiber axis; a method of producing the PP fiber by pre-drawing an undrawn PP fiber having an IPF of 94% or more at 120 to 150° C. at a drawing magnification of 3 to 10 times, and then post-drawing the resultant at 170 to 190° C. and a drawing magnification of 1.2 to 3.0 times under the conditions of a deformation rate of 1.5 to 15 times/min and a draw tension of 1.0 to 2.5 cN/dtex; and a hydraulic composition, a rope, a sheet-shaped fiber structure, and a composite material with an organic polymer each using the PP fiber.
    • 本发明的目的在于提供强度,耐热性和吸水性优异的聚丙烯纤维(PP纤维)及其制造方法,水硬性组合物,绳索,片状纤维结构体和 复合材料与各自使用PP纤维的有机聚合物。 本发明提供一种PP纤维,其纤维强度为7cN / dtex以上,并且具有(i)DSC性质中的任一种或两者,使得DSC的吸热峰形状为半宽度为10℃的单一形状 或更低,熔体焓变(AH)为125J / g,(ii)单纤维纤度为0.1〜3dtex的不规则性,表面形成凹凸,平均间隔为6.5〜 由于交替存在具有大直径的突起部分和沿其纤维轴线具有小直径的非突出部分的结果,平均高度为0.35至1μm,平均高度为0.35μm至1μm。 通过将拉伸倍数为3〜10倍,在120〜150℃下预拉伸IPF为94%以上的未拉伸的PP纤维,然后在170℃下拉伸所得的PP纤维, 190℃,拉伸倍率为1.5〜15次/分钟,拉伸张力为1.0〜2.5cN / dtex的条件下的1.2〜3.0倍。 和水硬性组合物,绳索,片状纤维结构体和具有各自使用PP纤维的有机聚合物的复合材料。