稀土偶联剂对碳酸钙表面改性的研究  

Study on Rare-earth Coupling Agent Modified the Surface of Calcium Carbonate

作　　者：朱庆英[1] 莫永才[1] 

机构地区：[1]惠州学院化学工程系,广东惠州516007

出　　处：《塑料科技》2006年第5期48-51,共4页Plastics Science and Technology

基　　金：校立项目(C205.0208)

摘　　要：采用硬脂酸稀土对碳酸钙进行改性,并对改性产品进行了表征。硬脂酸稀土湿法改性碳酸钙的最佳条件是:硬脂酸稀土用量1%,改性温度90℃,改性时间40min,搅拌速度1000r/min。改性结果表明,碳酸钙由亲水疏油变成了亲油疏水;通过FTIR分析表明,硬脂酸稀土与碳酸钙以化学键结合。It modified the surface of calcium carbonate by use of stearic acid rare-earth coupling agent, and characterized the modified product. The optimum conditions of stearic acid rare-earth modified calcium carbonate by means of wet method are： the dosage of stearic acid rare-earth being 1.0%, the modification temperature being 90℃, the modification time being 40min, and the stir speed being 1000r/min. The modified results showed that the hydrophile-oleophobic CaCO2 turns into lipophilic-hydrophobic CaCO3; the FTIR analytical results showed that the stearic acid rare-earth bonds with CaCO2 through chemical bond.

关 键 词：碳酸钙 硬脂酸稀土 活化指数 

分 类 号：TQ320.4[化学工程—合成树脂塑料工业]