摘要
采用喷雾干燥法对HNS炸药进行了微粉化,研究了不同入口温度、溶液浓度、泵速率对颗粒形貌的影响。结果表明,随着入口温度的降低,颗粒表面逐渐出现大的裂缝;当浓度过大,颗粒尺寸增大,而浓度过小颗粒表面裂缝增大。泵速率对颗粒形貌影响较小,但颗粒尺寸随泵速度的其增加而增加。建立了HNS喷雾干燥的结晶模型,并验证了模型的正确性。
HNS explosive was micronized by spray drying process. The influence of factors such as different entrance temperature, solution concentration and pump velocity on the particles＇ morphology were investigated. The results indicate that the surface of the particles will gradually appear large crack with increasing of entrance temperature. While for too large solution concentration, the particle size will become larger. The surface crack will augment if the solution concentration is too little. The pump velocity has little effect on the particle morphology. However, it was shown that an increase in the pump velocity results in a significant increase in particle size. The experimental results will establish foundation for preparation of micronized HNS. Crystallization model of HNS in spray drying process was established and validated.
出处
《火炸药学报》
EI
CAS
CSCD
2008年第5期5-8,共4页
Chinese Journal of Explosives & Propellants
关键词
材料科学
喷雾干燥
HNS
微粉化
形貌
结晶模型
materials science
spray drying
HNS
micronization
morphology
crystallization model
