摘要
以硬脂酸、钛酸四丁酯对掺锑氧化锡(ATO)纳米粉体进行表面改性,用FTIR、XRD、TG、TEM等分析手段结合沉降系数、活化指数的测试对改性效果进行了表征和分析.结果表明:钛酸四丁酯偶联剂与硬脂酸按1∶3比例混合,与经无水乙醇处理的ATO粉体比例为12∶加入,在140℃、二甲苯回流5 h的试验条件下对纳米ATO粉体的改性效果最佳,此改性粉体粒径小、抗团聚性好、在26#白油中具有良好的分散性.
The surface of nano-ATO powders is modified by using titanate coupling agent and stearic acid as modifier. The modification results, are characterized and analyzed by FTIR, XRD, TG, TEM, and the test for sedimentation coefficient and activation index. The results show that the optimized parameters are titanate coupling agent and stearic acid mixed by 1 ： 3, then mixed modifier with ATO by 1 ： 2, under 140 ℃ with xylene returnoing for 5 h. Under these conditions the modified powder can significantly improve the dispersion ability in 26# mine-oil, and possess the performance of small particle size and low agglomerate ability.
出处
《天津工业大学学报》
CAS
2008年第4期34-38,共5页
Journal of Tiangong University
关键词
ATO粉体
表面改性
团聚
分散
活化
nano-ATO powder
surface modification
agglomerate
dispersion
activation
