摘要
利用最小自由能法研究了以3,3-二叠氮甲基氧丁环(BAMO)与四氢呋喃(THF)共聚醚(PBT)为粘结剂,高氯酸铵(AP)、黑索今(RDX)、铝粉(Al)、二硝酰胺铵(ADN)为固体填料,不同增塑剂条件下推进剂比冲变化规律。理论计算表明:以2,2-二硝基丙醇缩甲醛与2,2-二硝基丙醇缩乙醛等质量比混合物(A3)、硝化甘油与二乙二醇二硝酸酯等质量比混合物(NG/DEGDN)作增塑剂时,推进剂比冲随RDX含量变化呈抛物线形,固体填料存在最佳添加比;NG/DEGDN增塑体系推进剂比冲高于A3体系。15%ADN取代AP时,由于燃烧产物平均相对分子质量降低,推进剂比冲显著提高。
The effects of ammonium perchlorate （ AP ）, hexahydro-1,3,5-trinitro-s-triazine （ RDX ）, aluminum powder （ Al ） and ammonium dinitramide （ADN） used as solid fillers on energy characteristics of composite PBT （BAMO and tetrahydrofuran （BAMO-THF） eopolymers ） propellants plasticized with A3 （ bis （ 2,2-dinitropropyl ） acetal/bis （ 2, 2-dinitropropyl ） formal ） and NG/DEGDN （glyceryl trinitrate/diethyleneglycol dinitrate） respectively were investigated using least free energy method. Calculated results indicate that the variation curves of the specific impulse of propellants are characteristics of a parabola with the increasing of RDX content,and there exist optimum content ratios of solid fillers in respective systems. Compared with those plasticized with A3, propellants plasticized with NG/DEGDN show higher specific impulses. The specific impulses are evidently enhanced due to the decreasing in average relative molecular mass of combustion products, caused by the addition of 15% ADN instead of AP into the formulations.
出处
《含能材料》
EI
CAS
CSCD
北大核心
2009年第1期73-78,共6页
Chinese Journal of Energetic Materials
