耐酸性纳米CaCO_3的制备与研究  

Study on preparation of acid-resistant calcium carbonate

作　　者：郭奋[1] 吴海霞[1] 陈建峰[1] 刘润静[1] 王东光[1] 

机构地区：[1]北京化工大学教育部超重力研究工程中心,北京100029

出　　处：《化工矿物与加工》2003年第5期5-7,23,共4页Industrial Minerals & Processing

基　　金：教育部科学技术研究重大项目资助项目 (项目编号 :0 2 0 2 )

摘　　要：对采用超重力技术制得的 3 0～ 60nm的CaCO3进行改性 ,在纳米CaCO3的表面形成一层具有一定致密度的SiO2 包覆膜 ,使其耐酸性得到极大的提高。采用TEM、BET、XPS等手段对改性前后的样品进行表征 ,并分析了耐酸成因。The surface modification of calcium carbonate prepared by using super-gravity technique was carried out. A sheet of membrane with a fairly compactness was formed on the surface of nanometer calcium carbonate, and its acid-resistance was improved greatly. The samples of calcium carbonate modified and unmodified were characterized by using TEM, BET and XPS method. The reason of forming acid-resistance was analyzed also.

关 键 词：纳米碳酸钙 包覆 耐酸性 超重力技术 制备工艺 改性 填充剂 

分 类 号：TQ132.32[化学工程—无机化工]