超细SC/Fe_(2)O_(3)@AP核壳结构复合粒子的制备及表征  

Preparation and Characterization of Ultrafine SC/Fe_(2)O_(3)@AP Core-shell Composite Particles

作　　者：曾江保 陈雍 边桂珍 王德齐 殷传传 高强 郑胜军 刘杰[3] ZENG Jiangbao;CHEN Yong;BIAN Guizhen;WANG Deqi;YIN Chuanchuan;GAO Qiang;ZHENG Shengjun;LIU Jie(Jiangxi Aerospace Jingwei Chemical Co.,Ltd.,Ji’an 343700,China;Institute of Chemical Defence,Academy of Military Sciences,Zhijiang 443200,China;National Special Superfine Powder Engineering Research Center of China,School of Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]江西航天经纬化工有限公司,江西吉安343700 [2]军事科学院防化研究院,湖北枝江443200 [3]南京理工大学化学与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

出　　处：《新技术新工艺》2021年第7期16-23,共8页New Technology & New Process

摘　　要：为了提高AP基复合固体推进剂的燃速,采用反相乳状液法制备了超细柠檬酸钠(SC)/氧化铁(Fe_(2)O_(3))@高氯酸铵(AP)核壳结构复合粒子,同时对比研究了SC/Fe_(2)O_(3)@AP与SC/Fe_(2)O_(3)-AP普通混合物的热分解特性,并将其应用于AP基复合固体推进剂中,探究2种复合粒子对AP基复合固体推进剂燃烧性能的影响。研究结果表明:与SC/Fe_(2)O_(3)-AP相比,SC/Fe_(2)O_(3)@AP的热分解峰温降低,表观活化能降低了约8.6%,热分解反应活性得到提高,并且含SC/Fe_(2)O_(3)@AP的AP基复合固体推进剂较含SC/Fe_(2)O_(3)-AP的AP基复合固体推进剂的热分解峰温提前。此外,含SC/Fe_(2)O_(3)-AP的AP基复合固体推进剂的燃速为45.33 mm/s,含SC/Fe_(2)O_(3)@AP的AP基复合固体推进剂的燃速为46.46 mm/s,燃速提高了2.5%。In order to improve the burning rate of AP-based composite solid propellant,ultrafine sodium citrate(SC)/iron oxide(Fe_(2)O_(3))@ammonium perchlorate(AP)core-shell composite particles were prepared with inverse emulsion method.At the same time,the thermal decomposition characteristics of SC/Fe_(2)O_(3)@AP and SC/Fe_(2)O_(3)-AP ordinary mixtures were compared and studied,and they were applied into AP-based composite solid propellant to explore the effect of two composite particles on the combustion performance of AP-based composite solid propellant.The results showed that compared with SC/Fe_(2)O_(3)-AP,the thermal decomposition peak temperature of SC/Fe_(2)O_(3)@AP decreased,the apparent activation energy decreased by about 8.6%,and the thermal decomposition reaction activity was improved.Moreover,the thermal decomposition peak temperature of AP-based composite solid propellant containing SC/Fe_(2)O_(3)@AP was earlier than that of AP-based composite solid propellant containing SC/Fe_(2)O_(3)-AP.In addition,the burning rate of AP-based composite solid propellant containing SC/Fe_(2)O_(3)-AP was 45.33 mm/s,and that of AP-based composite solid propellant containing SC/Fe_(2)O_(3)@AP was 46.46 mm/s,the burning rate increased by 2.5%.

关 键 词：高氯酸铵 纳米氧化铁 核壳结构复合粒子 反相乳状液 复合固体推进剂 燃速 

分 类 号：O611.2[理学—无机化学] O611.3[理学—化学]