纳米石墨在非水介质中的分散  

Dispersion of nano-graphite in non-aqueous medium

作　　者：张慧娟[1] 伍明华[1] 

机构地区：[1]华南理工大学化学与化工学院,广东广州510640

出　　处：《化学工程》2009年第8期43-45,54,共4页Chemical Engineering(China)

摘　　要：改变超声工艺条件、分散介质、分散剂及其用量来改善纳米石墨在非水介质中的分散稳定性,并通过测试含纳米石墨悬浮液的稳定时间、黏度及吸光度,表征纳米石墨在分散介质中的分散状态。研究结果表明,最佳超声条件:30℃,20—25min;二甲基硅油为最佳分散介质,纳米石墨质量分数为0.03%,钛酸酯偶联剂NDZ-105为最佳分散剂,其最佳添加质量分数为2%。By adjusting ultrasonic conditions, dispersive mediums, and the mass fraction of dispersants, the stability of nano-graphite in non-aqueous medium was improved. The dispersing experiments on nano-graphite-suspension were carried out by testing the stability time, viscosity and absorbency to characterize the dispersing state of nanographite in dispersive mediums. The results show that the optimal ultrasonic conditions are 30 ℃, 20-25 rain; the mass fraction of nano-graphite is 0.03%, the optimal dispersive medium is simethicone, and 2% is the best mass fraction of dispersant titanate coupling agent NDZ-105.

关 键 词：纳米石墨 润滑油 分散 稳定性 

分 类 号：TB383.1[一般工业技术—材料科学与工程]