改进“一步法”制备闭孔结构微气孔球扁药  

Preparation of Micro-pores Oblate Spherical Powder with Closed-pore Structure by Improvement of One Step Process

作　　者：郭长平[1] 殷继刚[2] 袁超[1] 李生有[1] 潘仁明[1] 

机构地区：[1]南京理工大学化工学院,江苏南京210094 [2]五洲工程设计研究院,北京100053

出　　处：《含能材料》2012年第3期333-336,共4页Chinese Journal of Energetic Materials

基　　金：国防科技工业基础产品创新计划

摘　　要：以传统球扁药工艺和微胶囊技术制备球扁药方法为基础,采用质量浓度为7%的Na2SO4溶液替代纯水作为分散介质,避免溶解在硝化棉溶液中的水易导致的药粒内部孔壁之间通孔结构的形成,用添加不同量内水相和化学发泡法两种方法来控制球扁药中闭孔结构的形成。结果表明:采用内水相用量来控制孔结构方法时,内水相用量低于30 mL时能制备孔径分布均匀、具有闭孔结构的球扁药;采用化学发泡法时,驱溶量为总溶剂量的29%时发泡能制备孔径分布较均匀、低堆积密度、具有闭孔结构的球扁药。A new process of fabricating micro-pores oblate spherical powder （MOSP） with closed-pore structure was put forwards which is based on the traditional ball propellant process and the way of making the micro-capsule. 7% sodium sulfate solution is used as a dispersion medium for making MOSP instead of water. This method can effectively avoid the hole connection structure between pore walls in MOSP caused by water which is dissolved in nitrocellulose solution. Both changing the dosage of inner water phase and chemical foaming are used to prepare MOSP with closed-pore structure. The results indicate that： MOSP with uniform pore and closed-pore structure can be prepared when the amount of the inner water phase is less than 30 mL; MOSP with uniform pore,closed-pore structure and Low bulk density can be prepared when 29% of solvent is evaporated.

关 键 词：高分子化学 微气孔球扁药 闭孔结构 制备方法 

分 类 号：TQ560.6[化学工程—炸药化工]