摘要
当利用溶胶 -凝胶法制备纳米粉体材料时 ,最关键的问题是防止聚集体的生成。本文分析了该制备过程中聚集体的形成原因 ,对几种常用的防止团聚体生成的方法进行了讨论 ,认为利用超声波空化作用是防止聚集现象的新措施。
Preventing agglomeration of particles is the most important problem in the preparation of the nanometer powders by means of sol gel method. The causes of agglomeration for particles were analyzed,and several methods for preparation of free agglomeration nanometer powders were disscused in this paper. Ultrasonic technique was newly proposed to be applied in the sol gel process to avoid the formation of agglomeration.
出处
《化学工业与工程》
CAS
2000年第3期155-159,共5页
Chemical Industry and Engineering
关键词
溶胶-凝胶法
纳米粉体
超声波
集聚
sol gel method
nanometer powders
ultrasonic
agglomeration
