Fracture Morphologies of CMDB Propellant

摘要：

In order to understanding the micro-mechanisms of the mechanical failure behaviors and the effects of binder-filler system on mechanical properties of CMDB propellant, fracture morphologies of propellant tensile samples with different particle size RDX and different bonding agents were analyzed by SEM. Evidence from SEM indicates that mechanical failure occurs at or about the binder-filler (RDX) interfaces, rather than RDX crystal interior or inside the propellant binder system. With the reducing of RDX partical size, average diameter from 225.1μm to 852.5nm, the cracks on the binder-filler (RDX) interface become smaller. Correspondingly, the maximum tensile strength (σm) has been increased from 0.53 Mpa to 1.74 Mpa at high temperature (50℃). After RDX were coated by bonding agents (LBA-201,CBA and Protein), under SEM, there are no sockets or bare particles visible on the fracture surface, solid filler is covered by binder. Failure of the propellant at the binder-filler interface under conditions of stress is substantially reduced, the maximum tensile strength (σm) is increased to 2.14 Mpa at high temperature (50℃).

作者: LI Enzhong LI Jiangcun JIAO Qingjie

作者单位: State Key Laboratory for Remanufacturing,Academy of Armored Forces Engineering,Beijing 100072,China The NO.3 department,Institute of Chemical Defence,P.O.Box 1048,Beijing 102205,China National key laboratory of explosive science and technology,Beijing Institute of Technology,Beijing

会议类型: 国际会议

会议名称: 2011 International Autumn Seminar on Propellants,Explosives and Pyrotechnics(2011国际推进剂、炸药、烟火技术秋季研讨会)

会议地点: 南京

会议语种:英文

页码: 394-396

在线出版日期: 2011-09-20（万方平台首次上网日期，不代表论文的发表时间）