超细空心微珠表面修饰碳酸钙的制备与表征  

Studies on preparation and properties of ultra-fined cenospheres modified with CaCO_3

作　　者：崔健[1] 陈国需[1] 李华锋[1] 

机构地区：[1]中国人民解放军后勤工程学院军事油料应用与管理工程系,重庆401311

出　　处：《功能材料》2010年第A02期312-315,共4页Journal of Functional Materials

摘　　要：采用表面沉积法对超细空心微珠进行无机修饰,在空心微珠表面形成了均匀且不连续的CaCO3膜,采用SEM、EDX、XRD等方法对修饰前后可能修饰微珠进行了分析和表征。结果表明,修饰后空心微珠外观颜色由灰黑色变为灰白色;修饰前空心微珠粒径为1.8μm,修饰后空心微珠平均粒径为1.94μm;修饰后空心微珠的比表面积为2.4m2/g,增大幅度为26.3%;修饰后空心微珠密度增大,通过公式测算修饰后空心微珠的壁厚增加了30%;最后采用分散剂将空心微珠分散到500SN基础油中,发现修饰后空心微珠在基础油中的分散稳定性能明显优于原始空心微珠。Ultra-fine cenospheres modified with CaCO3 were synthesized by surface liquid deposition method.Both the original and modified cenospheres were characterized by SEM,EDX,XRD,and colorimetric tube techniques.The results show the modified cenospheres＇color is changed from gray black to light gray,and the mean size of modified cenospheres is 1.94μm which is grown by 7.8% than original cenosphere.The modified ecosphere＇s area is 2.4m^2/g,which is larger about 26.3% than that of original cenosphere.The density of modified cenosphere is in-creased and according to the formula,it could be calculated that the thickness of cenosphere is grown by 30%.The original and modified cenosphere is dispersed by dispersant,and testing indicates that the dispersion stability properties of modified cenosphere are far more improved.

关 键 词：表面修饰 表面沉积法 空心微珠 CACO3 分散稳定性 

分 类 号：TQ171[化学工程—玻璃工业]