GAP-NG-BTTN粘合剂中CL-20和HMX“溶解-共晶”机理研究  

Dissolution and cocrystallization of CL-20 and HMX in GAP-NG-BTTN binder

作　　者：曹蓉[1] 赵程远 彭松[1] 池旭辉[1] CAO Rong;ZHAO Chengyuan;PENG Song;CHI Xuhui(Science and Technology on Aerospace Chemical Power Laboratory,Hubei Institute of Aerospace Chemotechnology,Xiangyang 441003,China)

机构地区：[1]航天化学动力技术重点实验室,湖北航天化学技术研究所,襄阳441003

出　　处：《固体火箭技术》2020年第2期154-160,共7页Journal of Solid Rocket Technology

基　　金：武器装备预研基金。

摘　　要：针对CL?20、HMX在GAP?NG?BTTN粘合剂中生成CL?20/HMX共晶的现象,采用HPLC法测定不同温度下ε?CL?20和β?HMX晶体在GAP?NG?BTTN粘合剂中的溶解度,并对溶解度测试试验后的CL?20和XRD进行了晶型和形貌表征;采用原位XRD表征了ε?CL?20和β?HMX及其混合物在高能粘合剂中的晶型变化,提出了CL?20和HMX在硝酸酯粘合剂中的“溶解?共晶”机理。结果表明,ε?CL?20和β?HMX在GAP?NG?BTTN粘合剂中具有一定的溶解度,单一的ε?CL?20或β?HMX纯品在GAP?NG?BTTN粘合剂中达到溶解平衡时CL?20和HMX的晶型和形貌均未发生任何变化;在ε?CL?20/β?HMX/GAP?NG?BTTN体系中,由于CL?20和HMX分子之间存在强烈相互作用,使得CL?20和HMX分子相结合而生成CL?20/HMX共晶,其从溶剂体系中析出,破坏了溶解平衡从而形成“溶解?共晶?析出?溶解”的循环过程。To study the cocrystallization of CL?20 and HMX in GAP?NG?BTTN binder,solubility of ε?CL?20 and β?HMX in GAP?NG?BTTN binder were measured at different temperatures by HPLC,as well as the polymorph and morphology of the experi?mental sample were characterized by XRD,FTIR and SEM.Interaction of CL?20 and HMX molecular was calculated by in situ XRD,and the mechanism of dissolution?cocrystallization of CL?20 and HMX in GAP?NG?BTTN Binder was proposed.The results show thatε?CL?20 and β?HMX can partially dissolve in GAP?NG?BTTN binder as well as the polymorph and morphology of sample about 70℃ have not been changed.However,owing toε?CL?20 and β?HMX molecular have strong interaction with each other,CL?20 and HMX could dissolve in nitrate ester plastid and generate the 2∶1 mole ratio CL?20∶HMX co?crystal in GAP?NG-BTTN binder.The cocrystals constantly precipitate from the liquid phase and work on the cycle of“dissolution?cocrystallization”.

关 键 词：CL-20 HMX 溶解 相互作用 共晶 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]