火炸药学报2016，Vol.39Issue(6)：90-93,4.DOI:10.14077/j.issn.1007-7812.2016.06.016
KH550改善硝基胍发射药低温力学性能研究
Study on Improving the Mechanical Properties of Nitroguanidine Gun Propellant with KH550 at Low Temperature
摘要
Abstract
To improve the mechanical properties and the combustion stability of nitroguanidine gun propellants under low temperature , the surface of nitroguanidine was coated by silane coupling agent (KH550), and gun propellants were prepared with nitroguanidine coated by KH550.The physico-chemical properties of nitroguanidine coated by KH550 were studied by scanning electron microscopy, infrared spectroscopy, differential scanning calorimetry.And the mechanical properties and combustion properties of modified nitroguanidine gun propellants were tested respectively by the Impact Testing Machine , Universal Testing Machine and by closed bomb vessel test.The results show that KH550 can be coated on the surface of nitroguanidine by chemical action, thermal decomposition property of nitroguanidine after coated is stable.Compared with original nitroguanidine propellant, the impact strength, compressive strength and stretch strength of modified nitroguanidine propellants under the low temperature environment increase by 34.22%, 3.71% and 11.9% , respectively.Compared with normal temperature(20℃), the relative gradient of modified nitriguanidine gun propellant combustion at low temperature (-40℃)reduces, and the combustion is more stable.关键词
发射药/力学性能/硅烷偶联剂/KH550/硝基胍/键合剂Key words
gun propellant/mechanical properties/silane coupling agent/KH550/nitroguanidine/bonding agent分类
军事科技引用本文复制引用
朱登攀,刘志涛,刘琼,廖昕..KH550改善硝基胍发射药低温力学性能研究[J].火炸药学报,2016,39(6):90-93,4.基金项目
国家自然科学基金资助(NO.51506093) （NO.51506093）
