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    • 5. 发明公开
    • 고농도 실리카 슬러리
    • 高浓度二氧化硅浆
    • KR1020050086527A
    • 2005-08-30
    • KR1020057008415
    • 2003-11-21
    • 닛폰 에어로실 가부시키가이샤
    • 모리이도시오파울브란들
    • C01B33/141C09K3/14
    • C09G1/02C01B33/1417C09K3/1463
    • A high-concentration silica slurry characterized in that the ratio (DL/DT) of average particle diameter (DL) measured from laser diffraction particle size distribution to average particle diameter (DT) measured from TEM micrograph is 1.3 or below and that silica powder of 0.08 to 0.8 mum average primary particle diameter is dispersed in a solvent at a silica concentration of 50 wt.% or higher so as to realize a viscosity of 1000 mPa.s or below. Preferably, a high-concentration silica slurry of 70 to 80 wt.% silica concentration containing silica powder wherein the respective concentrations of sodium and potassium impurities are both 1.0 ppm or below, the aluminum content 1.0 ppm or below, and the respective contents of sulfur, nickel, chromium and iron all 0.5 ppm or below, the high-concentration silica slurry having a viscosity of 800 mPa.s or below upon slurry formation.
    • 一种高浓度二氧化硅浆料,其特征在于,从TEM显微照片测定的激光衍射粒径分布测定的平均粒径(DL)与平均粒径(DT)的比(DL / DT)为1.3以下, 将0.08〜0.8μm的平均一次粒径分散在二氧化硅浓度为50重量%以上的溶剂中,以达到1000mPa.s以下的粘度。 优选地,含有二氧化硅粉末的二氧化硅浓度为70〜80重量%的二氧化硅浓度高的二氧化硅浆料,其中钠和钾杂质的各自浓度均为1.0ppm以下,铝含量为1.0ppm以下,硫含量分别为 ,镍,铬和铁全部为0.5ppm以下,高浓度二氧化硅浆液在浆料形成时粘度为800mPa.s以下。