SUN Yueyue, WANG Xuanyu, DONG Wenjie, YAO Weizhao, LIU Zhilong

(Pyrotechnic Department, Institute of NBC Defense of PLA Army, Beijing 102205, China)

Abstract: In order to solve the problem of poor fluidity of carbon fiber and improve the dispersion effect of carbon fiber smoke screen material, the fluidity index and jet index of graphite, 18 μm carbon fiber and 1.5 mm carbon fiber were compared by using the powder comprehensive characteristic tester.Then, 18 μm and 1.5 mm glued carbon fibers were modified by adding dispersant and coating SiO₂.The results show that the dispersion properties of 18 μm and 1.5 mm carbon fibers with or without glue don’t reach the ideal value.Physical modification by adding dispersant can significantly and effectively improve the dispersibility of 18 μm and 1.5 mm glued carbon fibers, and its fluidity index and jet index increase with the increase of dispersant content.The chemical modification method by coating with SiO₂ can improve the dispersion performance of 18 μm bonded carbon fiber, but it can’t effectively improve the dispersion performance of 1.5 mm bonded carbon fiber due to the influence of liquid surface tension.

Keywords: carbon fiber; dispersion performance; dispersant; surface coating; modification

中图分类号：TJ530                              文献标志码：A

文章编号：1008-5548(2022)03-0044-06

DOI:10.13732/j.issn.1008-5548.2022.03.006

收稿日期： 2021-11-11， 修回日期：2022-03-15，在线出版时间：2022-04-28。

基金项目：装备预研项目，编号：30110020502。

第一作者简介：孙悦悦(1993—)，女，硕士研究生，研究方向为武器系统与运用工程。E-mail：sunyueyue28@163.com。

通信作者简介：王玄玉(1965—)，男，教授，博士，研究方向为军事化学与烟火技术。E-mail：wxycrs@aliyun.com。