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    FLAKY ALPHA-ALUMINA CRYSTALS WITH LARGE ASPECT RATIO AND A PREPARATION METHOD OF THE SAME
    1.
    发明公开
    FLAKY ALPHA-ALUMINA CRYSTALS WITH LARGE ASPECT RATIO AND A PREPARATION METHOD OF THE SAME 有权
    阿司匹林 - 阿拉伯半乳糖 - 克里斯蒂耶夫麻醉大师ASPEKTVERHÄLTNISUND HERSTELLUNGSVERFAHRENDAFÜR

    公开(公告)号：EP2057096A4

    公开(公告)日：2013-04-24

    申请号：EP07793710

    申请日：2007-08-27

    申请人： KOREA RES INST CHEM TECH ,  CQV CO LTD

    发明人： LEE JUNG MIN ,  PARK BYUNG KI ,  SUH JEONG KWON ,  CHOE DONG UK ,  CHANG KIL WAN ,  LIM KWANG SU ,  JO SUNG YUN ,  KANG KWANG CHOONG

    IPC分类号： C01F7/02 ,  C01F7/34 ,  C01F7/44 ,  C09C1/40

    CPC分类号： C01F7/441 ,  C01F7/34 ,  C01P2002/72 ,  C01P2004/20 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2006/80 ,  C09C1/407 ,  Y10T428/2982

    摘要： The present invention relates to flaky alpha-alumina crystals with large aspect ratio and its preparation method, and particularly to flaky alpha-alumina crystals comprising aluminum oxide, zinc oxide and tin oxide, which are prepared by obtaining a mixed gel which are prepared by obtaining a mixed gel by means of hydrolysis of an aqueous aluminum precursor solution comprising aqueous flux, aqueous zinc precursor solution and tin precursor aqueous solution, followed by aging, drying and crystallization processes. The crystals herein have an average particle thickness of 0.5 μm or less, an average particle diameter of 30 μm or higher and an aspect ratio of 100 or higher, thus being useful as a substrate of high quality pearlescent pigments, an abrasive, ceramic material and a filling material.

    摘要翻译： 本发明涉及长宽比大的片状α-氧化铝晶体及其制备方法，特别涉及包含氧化铝，氧化锌和氧化锡的片状α-氧化铝晶体，其通过获得通过获得 通过水溶液包含水性助焊剂，锌水溶液前体溶液和锡前体水溶液的水解，然后进行老化，干燥和结晶过程的混合凝胶。 本发明的晶体的平均粒子厚度为0.5μm以下，平均粒径为30μm以上，纵横比为100以上，因此可用作高品质珠光颜料，磨料，陶瓷材料的基材， 填充材料。