类球形超细AP在AP-CMDB推进剂中的应用  

Application of Spheroidal Ultrafine AP in AP-CMDB Propellant

作　　者：张正中[1] 蔚红建[1] 郭效德[2] 李铎 邓重清[1] 雷红兵 祝捷[1] 陈亦斌[1] ZHANG Zheng-zhong;YU Hong-jian;GUO Xiao-de;LI Duo;DENG Chong-qing;LEI Hong-bing;ZHU Jie;CHEN Yi-bin(.Xi′an Modern Chemistry Research Institute,Xi′an 710065,China;National Special Powder Engineering Research Center,Nanjing University of Science and Technology,Nanjing 210094,China;Shanxi North Xing′an Chemical Industry Co.Ltd.,Taiyuan 030008,China)

机构地区：[1]西安近代化学研究所,陕西西安710065 [2]南京理工大学国家特种超细粉体工程技术研究中心,江苏南京210094 [3]山西北方兴安化学工业有限公司,山西太原030008

出　　处：《火炸药学报》2020年第4期424-427,共4页Chinese Journal of Explosives & Propellants

基　　金：装备发展部重大预研专项。

摘　　要：为了降低含超细AP的AP-CMDB推进剂的机械感度,将类球形超细AP加至CMDB推进剂中,通过扫描电子显微镜获得了推进剂的断面微观形貌;分别研究了类球形超细AP对推进剂密度、力学性能、燃烧性能和机械感度的影响。结果表明,类球形AP表面较光滑,在推进剂中分散较均匀,但与双基组分间存在部分界面脱粘现象;添加类球形超细AP对AP-CMDB推进剂的密度没有影响;可以有效提高推进剂的燃速,含类球形AP的AP-CMDB推进剂在10MPa时燃速从60.12mm/s提高至63.03mm/s;大幅降低推进剂的机械感度,特性落高(H50)提高了15.7cm,摩擦感度(P)降低了32%;但同时降低了推进剂的抗冲强度,-40℃时抗冲强度从5.22kJ/m^2降至4.12kJ/m^2,其原因与类球形AP的热分解性能、表面形貌、分散均匀性及与双基组分间的界面情况有关。To reduce the mechanical sensitivity of AP-CMDB propellant with ultrafine AP,the spheroidal ultrafine AP was added into CMDB propellant.The microstructure of the propellants were obtained by scanning electronic microscope.The effects of spheroidal ultrafine AP on the densities,mechanical properties,combustion performance and mechanical sensitivities of the propellant were investigated.The results show that the surface of spheroidal ultrafine AP is more smooth and it has a better dispersion uniformity in the propellant.However,there are interface debonding between spheroidal ultrafine AP and double base matrix.The density is not changed while the burning rate of AP-CMDB propellant with spheroidal ultrafine AP at 10MPa is increased from 60.12mm/s to 63.03mm/s.The mechanical sensitivities of AP-CMDB propellants with spheroidal ultrafine AP are reduced greatly.The characteristic drop height H50 is increased by 15.7cm and the friction sensitivity P is reduced by 32%.However,the impact strength of the propellant is reduced from 5.22kJ/m^2 to 4.12 kJ/m^2 at-40℃.The reasons maybe attributed to the thermal decomposition,microstructure,dispersion uniformity of spheroidal ultrafine AP,and the interface bonding between AP and double base matrix.

关 键 词：物理化学 类球形AP CMDB推进剂 燃速 机械感度 热分解 分散均匀性 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] V512[航空宇航科学与技术—航空宇航推进理论与工程]