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    • 32. 发明授权
    • Method of making agglomerate of whiskers or short fibers
    • 制作晶须或短纤维附聚物的方法
    • US5269993A
    • 1993-12-14
    • US968427
    • 1992-10-29
    • Tadao ShimizuYoshio AsoHidefumi Konnai
    • Tadao ShimizuYoshio AsoHidefumi Konnai
    • C04B18/02C08K7/02B29B9/08
    • C08K7/02C04B18/02
    • Whiskers having a diameter of 0.1-10 .mu.m and a length of 5-200 .mu.m are pelletized and granulated into agglomerates which have a size of 0.1-10 mm and a bulk density of 0.2-1.0 kg/liter.To pelletize, powders of whiskers are moistened with water while mixing to form primary aggregates. Then, the powders and the primary aggregates are subjected to a rolling movement to cause the primary aggregates to grow into secondary aggregates having desired size distribution. Finally, the secondary aggregates are dried to obtain pelletized or granulated agglomerates of whiskers.Handling of whiskers is facilitated because the agglomerates are less bulky and less likely to fly up in the air. When blended into molding materials for fiber reinforcement, however, the agglomerates are readily disintegrated back into separated individual fibers to provide homogeneous dispersion.
    • 将直径为0.1-10μm,长度为5-200μm的晶须造粒并造粒成具有0.1-10mm尺寸和堆积密度为0.2-1.0kg /升的团块。 为了造粒,将晶须的粉末用水润湿,同时混合形成初级聚集体。 然后,对粉末和初级聚集体进行滚动运动,使一次聚集体生长成具有所需尺寸分布的二次聚集体。 最后,将二次聚集体干燥以获得颗粒状或颗粒状的晶须附聚物。 因为聚集体体积较小并且不太可能在空气中飞升,因此易于处理晶须。 然而,当共混成纤维增强的成型材料时,附聚物容易地分解回分离的单独纤维中以提供均匀的分散体。