摘要
为了提升高氯酸铵(AP)基固体推进剂的燃烧及点火等性能,采用离子交换法制备了海藻酸锰薄膜,煅烧后得到了纳米Mn_3O_4复合催化剂,研究了其对AP热分解性能的影响。采用扫描电镜、傅里叶红外、X射线光电子能谱仪、X射线衍射仪等对制备的纳米Mn_3O_4复合催化剂形貌和结构进行了表征。结果表明,通过锰离子交换后,海藻酸钠变为海藻酸锰,所形成的薄膜表面光滑致密;400℃煅烧后原位生成的纳米Mn_3O_4颗粒负载在碳化后的海藻酸骨架上,其对AP的催化效果随着纳米Mn_3O_4复合催化剂含量的增加而增强,并且放热速率明显增加;当纳米Mn_3_O4复合催化剂含量为3%时,与纯AP相比,AP的分解温度降低了89.1℃。
To improve the combustion and ignition performances of ammonium perchlorate(AP)-based composite solid propellants,the manganese alginate film was prepared by an ion exchange method,and the nano-Mn3O4 composite catalyst was obtained after calcinations of the film.The effect of nano-Mn3O4 composite catalyst on the thermal decomposition performances of AP was studied.The morphology and structure of prepared nano-Mn3O4 composite catalyst were characterized by scanning electron microscopy(SEM),Fourier transform infrared(FT-IR)spectroscopy,X-ray photoelectron spectrometer(XPS)and X-ray diffractometer(XRD).Results show that after the exchange of manganese ion,sodium alginate becomes manganese alginate,formed film surface is smooth and dense.After calcinations at 400℃,in situ-grown nano-Mn3O4 particle is loaded onto the carbonized alginate skeleton.The catalytic effect on AP enhances with increasing the content of nano-Mn3O4 composite catalyst and the exothermic rate also increases significantly.Compared with pure AP,the decomposition temperature of AP decreases by 89.1℃when the content of nano-Mn3O4 composite catalyst is 3%.
作者
冯杨
何杰鑫
鲁月文
杨岚婷
王茜
刘珉
郭长平
杨光成
FENG Yang;HE Jie-xin;LU Yue-wen;YANG Lan-ting;WANG Qian;LIU Min;GUO Chang-ping;YANG Guang-cheng(Sichuan Co-Innovation Center for New Energetic Materials,Southwest University of Science and Technology,Mianyang 621010,China;Institute of Chemical Materials,CAEP,Mianyang 621999,China)
出处
《含能材料》
EI
CAS
CSCD
北大核心
2018年第12期1025-1030,共6页
Chinese Journal of Energetic Materials
基金
中国工程物理研究院化工材料研究所横向项目(18zh0056)
西南科技大学龙山项目支持(181zx681)
作者简介
冯杨(1998-),男,本科,特种能源技术与工程专业学生。e-mail:m15082520280@163.com;通信联系人:郭长平(1982-),男,讲师,主要从事含能材料改性的研究。e-mail:guochangping001@163.com
