作　　者： ; ; ;

机构地区： 贺州学院化学与生物工程系

出　　处： 《应用化工》 2012年第7期1165-1167,1171,共4页

摘　　要： 用钛酸丁酯对重质碳酸钙粉体进行表面改性,考察了改性剂浓度、温度、时间、搅拌速度对吸油值、粘度、沉降体积的影响。结果表明,钛酸丁酯用量为2.0%,改性温度90℃,改性时间为30 min,搅拌速度为500 r/min时,改性效果最好,改性后的碳酸钙粉体吸油值、粘度和沉降体积均比改性前有明显降低。 The tetrabutyl titanate modified heavy calcium carbonate powder, and the effect of the concen- tration of modification agent, modification temperature, modification time, and agitation rate were tested, taking sedimentation volume, oil absorption value, and viscosity as parameters. The results showed that the dosage of tetrabutyl titanate was 2.0%, the modification temperature was 90℃, the modification time was 30 min, the agitation rate was 500 r/min, the best modification results obtained. The modified calcium powder oil absorption value, viscosity and sedimentation volume reduced significantly.

关 键 词： 钛酸丁酯 重质碳酸钙 表面改性

领　　域： [化学工程]