功能助剂对GAP微烟推进剂流变性能的影响

摘要

通过高级扩展流变仪、旋转粘度计研究了功能助剂T1、T2、T3、S1对GAP高能微烟推进剂药浆流变性能的影响,并分析了其作用机理. 结果表明,多羟基力学性能调节剂T1、T2、T3在填料HMX间以氢键形成次价键作用,导致药浆粘度和屈服值大幅上升,流变性能恶化;加入T1、T2后,药浆粘度和屈服值呈现先下降、后升高的变化趋势;而燃速性能调节剂S1与T1、T2、存在协同作用,降低了药浆粘度的同时、一定程度上抑制了固化反应,延长了药浆适用期,改善了药浆工艺性能.%Effect of additives T1,T2,T3,S1 on the slurry rheological behavior for minimum smoke high-energy GAP composite propellant was investigated by advanced expansion rheometer and rotational viscometer.Meanwhile,the reaction mechanism was ana-lyzed.Results show that hydrogen bonds between particles HMX and additives T1,T2,T3 with multiple hydroxyl lead to the deterio-ration of slurry rheological behavior(viscosities and yield values increase remarkably).The viscosity and yield value of slurry first decrease and then increase by adding of T1,T2.There is a synergetic action between burning rate catalyst S1 and T1,T2,which im-proves the processing property of slurry by decreasing viscosity and increasing the pot life via inhibiting the curing reaction.