AP/RDX共晶包覆微米铝粉的制备及表征

Preparation and Characterization of AP/RDX Co-Crystal Coated Micron Aluminum Powder

关键词:  高氯酸铵  黑索金  核壳型复合颗粒  零氧平衡  共晶包覆

Key words:  AP  RDX  Core-shell composite particle  Zero oxygen balance  Co-crystal coated

摘要:

为了改善传统含高氯酸铵（AP）固体推进剂的热效应，采用溶剂蒸发法，参照零氧平衡的比例对高氯酸铵、黑索金（RDX）和微米级铝粉进行包覆处理，制备出微球形的AP/RDX/Al核壳型复合粒子，并对包覆后的AP/RDX/Al复合粒子进行TEM，FTIR，XRD和XPS表征分析。分析表明，AP和RDX形成了AP/RDX共晶包覆层，包覆在微米铝粉的表面。进一步对包覆后的复合粒子进行DSC测试，分析表明微米铝粉会使AP的放热更集中；经AP/RDX共晶包覆的微米铝粉颗粒热效应显著提高。

Abstract:

To improve the thermal effect of traditional solid propellant containing ammonium perchlorate （AP）， the core-shell composite particles of AP/RDX/Al were prepared by coating ammonium perchlorate， RDX and micron aluminum powder with reference to the proportion of zero oxygen balance by solvent evaporation method， and the coated AP/RDX/Al composite particles were characterized by TEM， FTIR， XRD and XPS. The results showed that the AP/RDX co-crystal coating was formed between AP and RDX on the surface of micron aluminum powder. The further characterization of DSC analysis for the coated composite particles showed that micron aluminum powder could concentrate the exothermic heat of AP， and the thermal effect of AP/RDX co-crystal coated micrometer aluminum powder particles was significantly improved.