Bi_2O_3/CNTS复合物的制备及其对双基推进剂燃烧的催化作用  

Preparation of Bi_2O_3/CNTs Composite and Its Combustion Catalytic Effect on Double-base Propellant

作　　者：洪伟良[1] 薛艳芬[1] 赵凤起[2] 刘剑洪[1] 史海兵[1] 徐思雨[2] 仪建华[2] 高红旭[2] 

机构地区：[1]深圳大学化学与化工学院,广东深圳518060 [2]西安近代化学研究所燃烧与爆炸技术重点实验室,陕西西安710065

出　　处：《火炸药学报》2012年第6期7-11,共5页Chinese Journal of Explosives & Propellants

基　　金：国防重点实验室基金项目(9140C3503020605)

摘　　要：以多壁碳纳米管、硝酸铋为原料,通过液相化学沉积法制备出Bi2O3/CNTs复合物。采用透射电镜(TEM)和X-射线粉末衍射(XRD)对产物的粒子形貌、粒径和物相结构进行了表征,并考察了Bi2O3/CNTs复合物对双基推进剂燃烧性能的影响。结果表明,产物中Bi2O3以球状粒子的形式均匀地负载在碳纳米管表面,平均粒径约为27nm。Bi2O3/CNTs复合物能明显改善推进剂的燃烧性能,使推进剂的燃速提高74.7%(4MPa),压强指数(16～22MPa)从0.7 834降低至0.4 307。Bi2O3/CNTs composite was prepared from bismuth nitrite by liquid phase deposition method under normal temperature and normal pressure using multi-walled carbon nanotubes.The morphologies and particle size of Bi2O3/CNTs composite were determined with XRD,TEM and EDS.The catalytic effect of Bi2O3/CNTs on the combustion performance of double-base propellant was investigated.The results show that Bi2O3 is supported on CNTs equally as a ball,and the diameter of the ball is about 27 nm.The Bi2O3/CNTs can enhance burning-rate of propellant by 74.7%(4 MPa),and decrease the pressure exponent from 0.7834 to 0.4307(16-22 MPa).

关 键 词：材料科学 碳纳米管 氧化铋 燃烧催化剂 双基推进剂 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] X93[环境科学与工程—安全科学]