机械粉碎法制备纳米CuCr_2O_4及其对高氯酸铵热分解性能的影响  

Preparation of Nano-sized Copper Chromite via a Mechanical Grinding Method and Its Effect on Thermal Decomposition of Ammonium Perchlorate

作　　者：郝嘎子 刘杰[1] 肖磊[1] 高寒[1] 姜炜[1] 李凤生[1] 赵凤起[2] 高红旭[2] 

机构地区：[1]南京理工大学化工学院国家特种超细粉体工程技术研究中心,江苏南京210094 [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：《兵工学报》2015年第9期1654-1659,共6页Acta Armamentarii

基　　金：基础产品创新技术火炸药科研专项(2012年);国家自然科学基金项目(51206081)

摘　　要：采用HLG-5型纳米化粉碎机批量制备了粒径约为60nm的纳米CuCr2O4.通过X射线衍射仪(XRD)、透射电子显微镜(TEM)对样品的结构及形貌进行表征,并采用差示扫描量热仪(DSC)分别研究工业CuCr2O4、共沉淀法制备的纳米CuCr2O4及机械粉碎法制备的纳米CuCr2O4对高氯酸铵(AP)热分解性能的影响。结果表明,与前二者相比,机械粉碎法制备的纳米CuCr2O4对AP具有更好的催化性能,能够使其速率常数提高,高温分解活化能减小。这将促进纳米CuCr2O4作为燃速催化剂在AP基复合推进剂中的应用。Nano-sized CuCr2O4 （copper chromite） with a particle size of 60 nm is prepared in large-scale via a HLG-5 type nanometer grinder. The microstructure and morphology of sample are characterized by X-ray diffraction （XRD） and transmission electron microscopy （TEM）. The catalytic effects of industrial CuCr2O4, nano-CuCr2O4 prepared by eoprecipitation method and nano-CuCr2O4 prepared by mechanical grinding method on thermal decomposition of ammonium perchlorate （AP） are investigated by a differential scanning calorimeter （DSC）. The results show that nano-CuCr2O4 prepared by mechanical grinding method has the best catalytic effect on AP as compared to the former two, improving the reaction rate constant and decreasing the high temperature decomposition activation energy. Nano-CuCr2O4 prepared by mechanical grinding method is promising as a high-performing combustion catalyst in AP-based composite propellants.

关 键 词：兵器科学与技术 纳米CuCr2O4 机械粉碎 高氯酸铵 热分解 催化效果 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]