An SEM and EDS study of the microstructure of nitrate ester plasticized polyether propellants

被引:3
|
作者
Liu, Yong [1 ,2 ]
Wang, Luoxin [1 ]
Tuo, Xinlin [1 ]
Li, Songnian [1 ,2 ]
机构
[1] Tsinghua Univ, Dept Chem Engn, Inst Polymers, Beijing 100084, Peoples R China
[2] Beijing Inst Chem Technol, Coll Mech & Elect Engn, Beijing 100029, Peoples R China
关键词
composite solid propellants; scanning electron microscopy; microstructure; element analysis; SOLID-PROPELLANT; ALUMINUM;
D O I
10.2298/JSC090326007L
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
To probe the microstructures of nitrate ester plasticized polyether (NEPE) composite propellants and observe the morphology of each constitute in the propellant, the microstructure and elemental constitutes of NEPE propellants were investigated using, scanning electron microscopy and energy dispersive X-ray spectroscopy. The ammonium perchlorate (AP) grains had a scraggy surface and were difficult to disperse uniformly. The compatibility between the AP grains and the polymer binder was poor, especially for large grains. The size distribution range of the AP and octogen (HMX) grains in propellants varied from several to several hundreds pm for the former while for the latter from several to several tens pm. Contrasting images before and after dissolution the propellant in trichloromethane showed that the degree of crosslinking of the polymer binder was low since non-crosslinked binder on the surface areas was easily removed by the solvent, and that the plasticizer was near the HMX grains and contributed more O to the element analysis of HMX.
引用
收藏
页码:369 / 376
页数:8
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