ADN/NC/RDX复合微推进体系制备及其性能研究  

Preparation and Performance Study of ADN/NC/RDX Composite Micropropulsion System

作　　者：毋盈盈 石晓峰 张泽军 张维海[2] 王斐 王晶禹 WU Ying-ying;SHI Xiao-feng;ZHANG Ze-jun;ZHANG Wei-hai;WANG Fei;WANG Jing-yu(School of Environmental and Safety Engineering,North University of China,Taiyuan,030051;Xi'an North Hui’an Chemical Industry Co.Ltd.,Xi'an,710302)

机构地区：[1]中北大学环境与安全工程学院,山西太原030051 [2]西安北方惠安化学工业有限公司,陕西西安710302

出　　处：《火工品》2025年第2期24-30,共7页Initiators & Pyrotechnics

基　　金：西安近代化学研究所创新开放基金(204-J-2024-2622)。

摘　　要：为了提高含RDX的复合改性双基(CMDB)推进剂的安全性,以硝化纤维素(NC)为粘合剂,二硝酰胺铵(ADN)为氧化剂,采用一体化自组装的方式制备了ADN/NC/RDX复合颗粒,使用扫描电子显微镜、X-射线衍射仪、差示扫描量热仪、BAM撞击感度仪和激光导热仪对其性能进行了表征和测试;基于ADN/NC/RDX复合颗粒和ADN/NC/RDX机械混合颗粒分别制备了CMDB推进剂,对其燃速进行了测试。结果表明:与原材料RDX相比,ADN/NC/RDX复合颗粒形貌规则,球形度较高,晶型未发生改变,撞击感度的平均特性落高提高了56.4 cm,活化能提高了26.83k J·mol^(-1),热爆炸临界温度有所降低,说明ADN/NC/RDX复合颗粒在等动力学原点温度以下更稳定;基于ADN/NC/RDX复合颗粒的推进剂的燃速稍高于基于ADN/NC/RDX机械混合颗粒的推进剂。In order to improve the safety of composite modified double base(CMDB)propellant containing RDX,ADN/NC/RDX composite particles were prepared by an integrated self-assembly method using nitrocellulose(NC)as the binder and ammonium dinitramide(ADN)as the oxidant.Their properties were characterized and tested using scanning electron microscopy,X-ray diffraction,differential scanning calorimetry,BAM impact sensitivity tester,and laser thermal conductivity instrument;CMDB propellants were prepared based on ADN/NC/RDX composite particles and ADN/NC/RDX mechanically mixed particles respectively,and their burning rates were tested.The results show that compared with the RDX raw material,the ADN/NC/RDX composite particles have a regular morphology,higher sphericity,and unchanged crystal structure.The average characteristic drop height of impact sensitivity is increased by 56.4 cm,the activation energy is increased by 26.83 kJ·mol^(-1),and the critical temperature for thermal explosion is decreased,indicating that the ADN/NC/RDX composite particles are more stable below the isokinetic origin temperature;The burning rate of propellants based on ADN/NC/RDX composite particles is slightly higher than that of propellants based on ADN/NC/RDX mechanically mixed particles.

关 键 词：RDX ADN ADN/NC/RDX复合颗粒 推进剂 自组装 机械感度 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] TQ560.5[化学工程—炸药化工]