微观参量表征RDX含量对非均质单基发射药力学性能的影响  

Influence of RDX Content on Mechanical Properties of Heterogeneous Single-base Gun-propellant Characterized by Microphysical Parameter

作　　者：刘佳[1] 马忠亮[1] 张丽华[1] 肖忠良[1] 程山 

机构地区：[1]中北大学化工与环境学院,太原山西030051 [2]江河化工科技有限公司,宜昌湖北444200

出　　处：《含能材料》2015年第7期676-681,共6页Chinese Journal of Energetic Materials

基　　金：火炸药青年创新基金(40406010301)

摘　　要：为了用界面微观参量表征非均质发射药宏观力学性能,对黑索今(RDX)含量为0%(即粘结剂基体),10%,20%,30%,35%的单基发射药在-40,20,50℃下进行抗压性能、抗冲击性能实验研究,并测试了20,30,40,50℃粘结剂基体接触角,进而测算出粘结剂基体的表面能,粘结剂基体与RDX的界面能,最终定义表征宏观力学性能的微观参量——单位质量RDX与粘结剂基体界面粘附能(Ed),并将Ed与对应含量RDX发射药的力学性能参数(屈服应力σ,体积变形冲击功D)由方程y=a+be-x/t拟合。发现拟Ed与σ和D呈指数衰减函数关系,拟合结果与宏观性能测试结果一致,两者结果均为:随着RDX含量的增加,Ed减小,且屈服应力和体积变形冲击功均增大。表明可用微观参量表征单基发射药的宏观力学性能。In order to characterize macroscopic mechanical properties of heterogeneous propellant by microphysical parameters,the compressive property and shock resistance of single-base gun-propellant containing different amount of RDX（0%（binder）,10%,20%,30%,35%） were tested at-40,20,50 ℃,and the surface contact angle of binder was measured at 20,30,40 ℃ and 50 ℃.Then,the surface energy of binder and the interface energy between binder and RDX were calculated and the microscopic parameter-adhesive energy per mass of RDX and binder（E^d） was defined.The relationships between E^d and mechanical property parameters（yield stress σ,volume deformation impact energy D） were obtained.Results show that σ and D decline in an exponential function with E,which is consistent with the macroscopic test：with the increasing of RDX,the E^d decreases,σ and D both increase.It turns out that macroscopic mechanical properties of single-base gun-propellant can be characterized by microphysical parameter.

关 键 词：发射药 抗压性能 抗冲击性能 微观参量 黑索今(RDX) 界面粘附能(Ed) 

分 类 号：TQ562[化学工程—炸药化工]