纳米铝粉在煤油中的均分散技术

推进技术 ›› 2005, Vol. 26 ›› Issue (2): 184-187.

纳米铝粉在煤油中的均分散技术

刘香翠,朱慧,张炜,王春华

国防科技大学航天与材料工程学院湖南长沙410073;国防科技大学航天与材料工程学院湖南长沙410073;国防科技大学航天与材料工程学院湖南长沙410073;国防科技大学航天与材料工程学院湖南长沙410073

发布日期:2021-08-15

Study on dispersion of nano-aluminum powder in kerosene

Inst. of Aerospace and Material Engineering, National Univ. of Defence Technology, Changsha 410073, China;Inst. of Aerospace and Material Engineering, National Univ. of Defence Technology, Changsha 410073, China;Inst. of Aerospace and Material Engineering, National Univ. of Defence Technology, Changsha 410073, China;Inst. of Aerospace and Material Engineering, National Univ. of Defence Technology, Changsha 410073, China

Published:2021-08-15

摘要/Abstract

摘要： 研究了纳米铝粉在煤油中的均分散技术。研究发现, 在煤油中加入适量的凝胶剂, 并采用电磁搅拌或超声波进行分散, 可使纳米铝粉在煤油中不沉降, 达到分散均匀并能稳定贮存。研究结果表明, 纳米铝粉/煤油凝胶体系中纳米铝粉的含量增加, 不使铝粉沉降所需加入的凝胶剂量减少; 当纳米铝粉含量达到一定值时, 不加凝胶剂即可使纳米铝粉在煤油中不沉降, 说明此时纳米铝粉本身就相当于一种凝胶剂; 而普通铝粉不存在这种特性。对于纳米铝粉在煤油中的分散而言, 超声波分散的效果好于电磁搅拌的分散效果。超声波作用时间8 ~10min是使纳米铝粉在煤油中达到均分散的最佳时间。

关键词: 纳米铝粉;煤油;分散;凝胶剂

Abstract: In this paper, the dispersion techniques of nano-aluminum powder in kerosene are studied in detail. The addition of the gellant makes nano-aluminum disperse in kerosene to form nano-aluminum-kerosene gel system by means of electromagnetic stir and ultrasonic. With increase of the content of nano-aluminum powder, the content of gellant to form nano-aluminum-kerosene gel system decreases. When the content of nano-aluminum powder is over 6 percent, no gellant is needed to form the nano-aluminum-kerosene gel system, which indicates that nano-aluminum powder itself acts as a gellant. However, the normal aluminum powder cannot act as gellant. On the other hand, the ultrasonic dispersion effect of nano-aluminum in kerosene is better than that of electromagnetic stir. The experimental results showed that the optimum dispersion time to form nano-aluminum-kerosene gel system is 8～10min by means of ultrasonic power.

Key words: Nano-aluminum;Kerosene;Dispersion;Gellant

刘香翠,朱慧,张炜,王春华. 纳米铝粉在煤油中的均分散技术[J]. 推进技术, 2005, 26(2): 184-187.