化工学报 ›› 2024, Vol. 75 ›› Issue (4): 1724-1734.DOI: 10.11949/0438-1157.20231397
收稿日期:
2023-12-31
修回日期:
2024-01-28
出版日期:
2024-04-25
发布日期:
2024-06-06
通讯作者:
陶胜洋
作者简介:
刘静(1999—),女,硕士研究生,liu224521@163.com
基金资助:
Jing LIU1(), Wenbo YANG1, Yingdi LYU2,3, Shengyang TAO1()
Received:
2023-12-31
Revised:
2024-01-28
Online:
2024-04-25
Published:
2024-06-06
Contact:
Shengyang TAO
摘要:
纳米铝粉作为高能添加剂广泛应用于含能复合材料领域。然而,制备高球形度铝粉掺杂的复合微球却面临着一系列挑战。采用喷雾与反溶剂结晶相结合的方法,探索了一种制备纳米铝粉与有机分子形成复合功能微球的喷射-结晶途径。通过自主设计的内混三流式空气雾化喷嘴,将前驱液雾化成液滴,反溶剂接收浴接收后,溶剂与反溶剂发生快速的相互扩散和传质过程,含能分子模拟物蔗糖八乙酸酯(SOA)在液滴内部析出,将铝粉包裹在内,洗涤干燥后得到铝粉掺杂的复合微球。通过调控合适的雾化、溶剂与反溶剂、添加剂等条件,成功解决了干燥后复合微球球形度低、微球之间相互团聚等现象,最终制备出粒径分布窄、形貌均一、分散性较好、球形度和密实度较高的掺杂铝粉的微球复合材料。
中图分类号:
刘静, 杨文博, 吕英迪, 陶胜洋. 喷雾-反溶剂结晶法制备掺杂铝粉的复合微球[J]. 化工学报, 2024, 75(4): 1724-1734.
Jing LIU, Wenbo YANG, Yingdi LYU, Shengyang TAO. Spray-anti-solvent crystallization method for preparing doped aluminum powder composite microspheres[J]. CIESC Journal, 2024, 75(4): 1724-1734.
序号 | 气压/mbar | 液压/mbar | 气液比 | D50/μm |
---|---|---|---|---|
1 | 1600 | 100 | 32 | 62.514 |
2 | 1700 | 100 | 34 | 60.144 |
3 | 1800 | 100 | 36 | 56.609 |
4 | 1900 | 100 | 38 | 54.237 |
5 | 2000 | 100 | 40 | 49.848 |
6 | 1800 | 90 | 40 | 50.781 |
表1 内混三流式空气雾化喷嘴雾化条件
Table 1 Atomization conditions of internal mixing three-stream air atomizing nozzle
序号 | 气压/mbar | 液压/mbar | 气液比 | D50/μm |
---|---|---|---|---|
1 | 1600 | 100 | 32 | 62.514 |
2 | 1700 | 100 | 34 | 60.144 |
3 | 1800 | 100 | 36 | 56.609 |
4 | 1900 | 100 | 38 | 54.237 |
5 | 2000 | 100 | 40 | 49.848 |
6 | 1800 | 90 | 40 | 50.781 |
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