火炸药学报Issue(6)：91-94,4.DOI:10.14077/j.issn.1007-7812.2015.06.018
AP-CMDB 推进剂微观结构及药形尺寸对低温力学性能的影响
Effects of Microstructure and the Form and Size on Mechanical Properties of AP-CMDB Propellant at Low Temperature
摘要
Abstract
To study the cause of producing cracking propellant in engine test at low temperature for AP-CMDB propellant prepared by solvent-extrusion method,the microstructure of the sample was observed by scanning electron microscopy and energy spectrometer.The linear expansion matching of AP particles and binder system was studied via measuring the linear expansion coefficient of AP-CMDB propellant.The effects of the form and size on the impact resistance of the propellant were studied.The results show that there are lots of micro-holes and a few micro-cracks in the propellant grain prepared by solvent-extrusion method,the agglomeration of AP particles is ob-vious,and the Al particles and binder system appear serious interface debonding.The linear expansion matching be-tween AP particles and binder system is poor.The impact resistance of single-tube propellant grain with wall thinckness of 1.5 mm is lower than that of propellant with wall thickness of 4.5 mm at -40℃.The impact resist-ance of propellant grain with casing structure is lower than that of propellant with single-tube structure.The forma-tion of cracking propellant at low temperature for AP-CMDB propellant correlates with the microstructure,mechani-cal property,form and size of the propellant.关键词
AP-CMDB推进剂/低温力学性能/微观结构/线膨胀系数/抗冲强度/药形尺寸/溶剂压伸法Key words
AP-CMDB propellant/mechanical properties at low temperature/microstructure/linear expansion coefficient/impact resistance/form and size/solvent-extrusion method分类
军事科技引用本文复制引用
张正中,樊学忠,李吉祯,刘晓军,党永战,张亚俊..AP-CMDB 推进剂微观结构及药形尺寸对低温力学性能的影响[J].火炸药学报,2015,(6):91-94,4.基金项目
西安近代化学研究所青年基金 （）
