FOX-7基PBXs喷雾干燥前驱体分散稳定性研究  

Study on Dispersion Stability of Spray Drying Precursor of FOX-7 Based PBXs

作　　者：杨玥 董子文 孔松 黄辉 李小东 王晶禹 YANG Yue;DONG Zi-wen;KONG Song;HUANG Hui;LI Xiao-dong;WANG Jing-yu(School of Materials and Chemical Engineering,School of Safety Engineering,Ningbo University of Technology,Ningbo Zhejiang 315211,China;School of Environment and Safety Engineering,North University of China,Taiyuan 030051,China;Shanxi Engineering Technology Research Center for Ultrafine Powder,North University of China,Taiyuan 030051,China)

机构地区：[1]宁波工程学院材料与化学工程学院/安全工程学院,浙江宁波315211 [2]中北大学环境与安全工程学院,山西太原030051 [3]山西省超细粉体工程技术研究中心,山西太原030051

出　　处：《火炸药学报》2022年第5期703-710,共8页Chinese Journal of Explosives & Propellants

基　　金：2021年浙江省教育厅一般科研项目(No.Y202147546);宁波工程学院2021年科研启动金(No.2130011540016)。

摘　　要：为制备分散稳定的微米1,1-二氨基-2,2-二硝基乙烯(FOX-7)喷雾干燥前驱体悬浮液,采用单因素和正交试验对微米FOX-7喷雾干燥悬浮液的制备条件进行优化,研究了悬浮液固含量、搅拌速度、搅拌时间、超声功率、超声时间和温度对前驱体悬浮液中微米FOX-7分散稳定性的影响,以沉降试验和吸光度法为表征手段考察了悬浮液的分散稳定性,并讨论了影响因素对悬浮液分散状态的影响机制。结果表明,4种影响因素对悬浮液分散稳定性影响顺序从大到小依次为:搅拌速度>超声时间>搅拌时间>超声功率;在固含量为2%~4%、搅拌速度为600r/min、搅拌时间为20min、温度为25℃,超声功率和时间分别为300W和15min的条件下,微米FOX-7在前驱体悬浮液中可实现较好的分散稳定性。To prepare micron-sized 1,1-diamino-2,2-dinitroethylene(FOX-7)spraydring precursor suspension with good dispersion stability,the optimization of the preparation conditions of micron-sized FOX-7 spray drying suspensions was conducted by using the single-factor and orthogonal tests.The effects of solid content of suspension,stirring velocity,stirring time,ultrasonic power,ultrasonic time and temperature on the dispersion stability of micron-sized FOX-7 in precursor were investigated.The dispersion stability of the suspension was illustrated by sedimentation experiment and spectrophotometer method.The mechanism of influencing factors on the dispersion stability of the suspension was discussed.The results show that four influencing factors on the dispersion stability of suspensions are in descending order:stirring velocity>ultrasonic time>stirring time>ultrasonic power.The micron-sized FOX-7 can achieve good dispersion stability in the precursor under the conditions of solid content of 2%—4%,stirring velocity of 600 r/min,stirring time of 20 min,temperature of 25℃,ultrasonic power and time of 300 W and 15 min,respectively.

关 键 词：物理化学 1 1-二氨基-2 2-二硝基乙烯 FOX-7 喷雾干燥 高聚物黏结炸药 PBX 分散稳定性 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] TQ564[化学工程—炸药化工]