Science and Technology of Energetic Materials

Vol.81, No.3 (2020)


Preparation and effects on stability and electrostatic sensitivity of α-AlH3 by coated with stearic acid
Ming-na Qin, Yan Zhang, Wang Tang, Qiang Shi, and Shao-jun Qiu


The α-AlH3 was coated with stearic acid (SA) by the method of solvent-nonsolvent. The crystal structure and the morphology of the prepared samples before and after coating were characterized by Fourier transform infrared spectroscopy (FTIR), elemental analysis (EA), scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The electrostatic sensitivity of α-AlH3 samples before and after coating was measured by JGY-50 Ⅲ. The results show that coating agent is firmly coated on the surface of α-AlH3. The testing results show α- AlH3 coated with SA can decrease the electrostatic sensitivity. The spark energy required for 50 % initiation probability (E50) increased from 367 mJ to out of range.

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α-AlH3, solvent-nonsolvent, stearic acid (SA), electrostatic sensitivity

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