Means For Removing Organic Impurities From Silica Gel Powder Used For Thin Layer Chromatography;
薄层色谱硅胶粉中有机杂质的去除方法
Methods Firstly,the pellets containing the drug were prepared by extrusion spheronizer,then the pellets were coated with the mixture of HPMC and Aerosil as the swelling and control-releasing layer;subsequently,the outer layer of the pellets was coated with ethylcellulose aqueous dispersion-Surelease as the time controlled film.
方法首先采用挤出滚圆机制备了含药微丸,然后使用流化床包衣设备将微丸包衣,以羟丙甲纤维素和微粉硅胶的混合物包衣作为溶胀控释层,以乙基纤维素水分散体Surelease包衣作为时滞包衣层,并将包衣微丸装入肠溶胶囊。
With white fused corundum and fused magnesia as raw materials,Al2O3-SiO2 gel powder as binder,Al2O3-MgO based castable with different contents of Al2O3-SiO2 gel powder were prepared in this study.
以电熔白刚玉和电熔镁砂为原料,以铝硅凝胶粉为结合剂制备Al2O3-MgO浇注料,研究铝硅凝胶粉加入量对Al2O3-MgO质浇注料线变化率、显气孔率、耐压强度和高温抗渣性能的影响。