单分散菊状坡缕石-CaCO_3纳米复合粉体制备及表征  

Preparation and Characteration of Nanocomposite Powder of the Monodisperse Chrysanthemum Shape of Palygorskite-CaCO_3

作　　者：赵娣芳[1] 丁明[1] 谢劲松[1] 李明华[1] 

机构地区：[1]合肥学院化学与材料工程系,安徽合肥230601

出　　处：《矿产综合利用》2014年第1期76-78,共3页Multipurpose Utilization of Mineral Resources

基　　金：安徽省科技厅自然科学金面上项目(11040606M100)

摘　　要：本文采用液相沉淀法制备了坡缕石-CaCO3(PG-nanoCaCO3)纳米复合粉体,用X-射线衍射(XRD)法和透射电子显微镜(TEM)对其物相组成和微观形貌进行了表征,以热重分析法对其热稳定性进行了分析,并对其相对白度进行了测试,结果证明:所制备的坡缕石-CaCO3纳米复合粉体的微观形貌为菊状单分散结构,平均粒度为2μm左右,相对白度达到95.83,热稳定性比纯坡缕石有极其显著的提高。The liquid-phase precipitation method was adopted to prepare nanocomposite powder of the Palygorskite- CaCO3 （PG-Ca）. The morphology and composition of the samples were characterized by X-ray diffraction （XRD） and transmission electron microscopy （TEM）. The thermal stability was analyzed by thermogravimetric analysis （TG）and the ralative whiteness was also measured. It was demonstrated that the product was chrysanthemumshape and mono- disperse structructure with an average particle size of 2μm. The relavite whiteness reached 95.83. Meanwhile,the powder had the remarkable thermal stability than pure palygorskite clay.

关 键 词：单分散 坡缕石 纳米复合粉体 碳酸钙 

分 类 号：TD989[矿业工程—选矿] TB330.1[一般工业技术—材料科学与工程]