【作者】 丁浩； 许霞； 杜高翔； 冉君；

【Author】 DING Hao XU Xia DU Gao-xiang RAN Jun (School of Materials Science and Technology,China University of Geosciences(Beijing),Beijing 100083,China)

【机构】 中国地质大学(北京)材料科学与工程学院；

【摘要】 采用机械力化学包覆方法,通过在绢云母表面包覆TiO₂制备了绢云母/ TiO₂复合颗粒材料（SRI/ Ti-CPM）。实验研究了SRI/Ti-CPM制备工艺因素的影响,用扫描电子显微镜（SEM）及表面元素能谱分析手段研究了SRI/Ti-CPM的微观结构和组分分布,通过测试SRI/Ti-CPM与颜料相关物理性能及在涂料中的应用对其颜料性能进行了评价。结果表明,绢云母与TiO₂复合时间、复合研磨体系球料比和TiO₂比例对SRI/Ti-CPM性能影响显著;SRI/Ti-CPM具有类似钛白粉的颜料性质,遮盖力为钛白粉的90%,吸油量和紫外线吸收功能与钛白粉相同,用于涂料可取得优于单纯使用钛白粉的效果;SRI/Ti-CPM中TiO₂在绢云母表面形成了均匀包覆。更多还原

【Abstract】 Sericite/TiO₂ composite particles material （SRI/Ti-CPM） is prepared by coating TiO₂ on surface of sericite using mechano-chemical method.The technical factors for preparing SRI/Ti-CPM is studied,the micro- structure and composition distribution of SRI/Ti-CPM is observed by SEM and analyzed by EDAX,the pigment performance is evaluated by testing associated physical property of SRI/Ti-CPM with pigment and by its appli- cation in paint.The results show that the compound time for sericite and TiO₂,ratio of ball to feeding and TiO₂ dosage have significant influences on the properties of SRI/Ti-CPM.The pigment performance of SRI/Ti-CPM is similar to that of titanium dioxide,the hiding power is 90% of titanium dioxide,the oil adsorption and ultra- violet adsorption are the same with titanium dioxide.The effect when used in coatings is better than titanium di- oxide alone.TiO₂ is coated evenly on surface of sericite in SRI/Ti-CPM.更多还原