摘要
以高氯酸铵基分子钙钛矿含能材料(DAP-4)为主体炸药,制备了Al/DAP-4复合体系,采用差热扫描量热法(DSC)和自主建立的燃烧测试方法,对DAP-4以及Al/DAP-4复合体系的热分解特性和燃烧过程进行了研究。结果表明,随着Al粉粒径减小以及添加量的增加,对DAP-4热分解的峰值温度降低效果越明显,添加质量分数40%、粒径100 nm的Al使得DAP-4的热分解峰温降低了19.5℃,表明纳米级Al对DAP-4热分解具有较好的促进作用。开放性燃烧实验表明,微米级和纳米级Al粉均能提高DAP-4的燃烧剧烈程度,随着500 nm和10μm Al粉含量的增加,Al/DAP-4燃烧到达火焰前锋面所需时间(t r)和持续燃烧时间(t c)明显增加,添加质量分数40%、粒径100 nm的Al粉时,持续燃烧时间增益效果最为明显,是纯DAP-4燃烧时间的2.55倍。
Al/DAP-4 composite system was prepared by using ammonium perchlorate perovskite molecular energetic materials(DAP-4)as the main explosive.The thermal decomposition and combustion process of pure DAP-4 and Al/DAP-4 compounds were investigated by differential scanning calorimetry(DSC)and combustion test method.The results showed that with the decrease of the particle size and the increase of the content of Al powder,the decrease of peak temperature of DAP-4 thermal decomposition peak was more obvious.The thermal decomposition peak temperature of DAP-4 was decreased by 19.5℃when adding 40%Al(100 nm),indicating that nanoscale Al could promote the thermal decomposition of DAP-4.According to the results of combustion experiment made in air,the combustion intensity of DAP-4 was improved by using micron and nanoscale Al.With the increase of 500 nm and 10μm Al powder content,the time to reach the flame front and sustained combustion of Al/DAP-4 increased obviously.The continuous combustion duration of Al/DAP-4 was 2.55 times than that of pure DAP-4 when adding 40%100 nm Al particles.
作者
李晓霞
胡双启
曹雄
邓鹏
付玉平
LI Xiao-xia;HU Shuang-qi;CAO Xiong;DENG Peng;FU Yu-ping(School of Engineering for Safety and Emergency Management,Taiyuan University of Science and Technology,Taiyuan 030024,China;School of Environment and Safety Engineering,North University of China,Taiyuan 030051,China;State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China)
出处
《火炸药学报》
EI
CAS
CSCD
北大核心
2023年第1期62-68,共7页
Chinese Journal of Explosives & Propellants
基金
国家自然科学基金(No.21975227)
山西省基础研究计划项目(No.202103021224277)
山西省高等学校科技创新项目(No.2021L325)
太原科技大学科研启动基金(No.20222013)。
关键词
物理化学
分子钙钛矿
DAP-4
Al粉
释能特性
热分解
燃烧
physical chemistry
molecular perovskite
DAP-4
Al powder
release energy characteristics
thermal decomposition
combustion
