硬脂酸包覆的α-AlH_3:制备及其静电感度  

α-AlH_3 Coated with Stearic Acid: Preparation and its Electrostatic Sensitivity

作　　者：秦明娜[1] 张彦[1] 唐望[1] 石强[1,2] 汪伟[1] 邱少君[1] 

机构地区：[1]西安近代化学研究所,陕西西安710065 [2]氟氮化工资源高效开发与利用国家重点实验室,陕西西安710065

出　　处：《含能材料》2017年第1期59-62,共4页Chinese Journal of Energetic Materials

摘　　要：为降低α-AlH_3静电感度,选用硬脂酸(SA)作为包覆材料,采用溶剂-非溶剂法对α-Al H3进行表面包覆。通过傅里叶变换红外光谱(FT-IR)、X射线衍射仪(XRD)、X光电子能谱(XPS)、元素分析和扫描电子显微镜(SEM)对包覆前后α-AlH_3的结构和形貌进行表征。按GJB5891.27-2006采用静电火花感度仪JGY-50Ⅲ对包覆前后样品的静电感度进行测试。结果表明:硬脂酸在α-AlH_3表面形成均匀完整包覆层,包覆后的α-AlH_3样品晶体结构和形貌均未发生变化,E50由未包覆前的367mJ降低至测试上限5390mJ时未见发火,包覆使其静电感度降低。To reduce the electrostatic sensitivity of α-AlH3, α-AlH3 was coated by the solvent-nonsolvent method using stearic acid （SA） as coating material. The crystal structure and morphology of samples before and after coating were characterized by Fourier transform infrared spectroscopy（FT-IR） , X-ray diffraction（XRD） , X-ray photoelectron spectroscopy（XPS） , elemental analysis and scanning electron microscopy（SEM）. The electrostatic sensitivity of α-AlH3 samples before and after coating was measured by JGY-50Ⅲ type static spark sensitivity tester according to GJB5891.27-2006 method. Results show that a complete, uniform coating layer of SA is formed on the surface of α-AlH3. The crystal structure and morphology of the sample after coating are not changed. When the spark energy required for 50% initiation probability（E50）decreases from 367 mJ before coating to test limit 5390 m J, the fire does not occur. The coating makes the electrostatic sensitivity reduce.

关 键 词：α~AIH3 静电感度 硬脂酸（SA） 溶剂-非溶剂 

分 类 号：V51[航空宇航科学与技术—航空宇航推进理论与工程]