硬脂酸及硬脂酸鈣包覆RDX表面改質之特性研究

本研究係利用表面改質來降低RDX的機械敏感度，首先藉由化學沉澱法將硬脂酸及硬脂酸鈣分別包覆於RDX微粒表面，再以掃描式電子顯微鏡（SEM）及能量分散X光譜儀（EDS）觀察及檢測包覆效果，並利用微差掃描熱卡計（DSC）及熱重分析儀（TGA）量測及比較RDX包覆前後的熱化學性質，最後利用落錘撞擊敏感度及摩擦敏感度測試量測機械敏感度，分析表面改質對RDX敏感度之影響，實驗結果顯示包覆後的RDX微粒機械敏感度明顯低於原料級RDX微粒，其中又以硬脂酸鈣包覆的效果較佳，研究成果將可提供兵工廠發展鈍感炸藥的生產製程。

關鍵字

RDX表面改質；包覆；硬脂酸；硬脂酸鈣；機械敏感度

並列摘要

In this study, an effective surface modification method was developed to reduce the mechanical sensitivity of RDX (Cycotrimethylenetrinitramine). Firstly, stearic acid or calcium stearate was coated on the surface of RDX particles by the chemical precipitation method. Afterward scanning electron microscope (SEM) and energy dispersive X-ray spectrum analyzer (EDS) were used to observe and verify the coating results. Differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA) were also used to measure and compare the thermochemical properties of RDX particles before and after coating. Finally, drop hammer impact test and friction sensitivity test were executed to measure mechanical sensitivity for analyzing the effect of surface modification of RDX particles on the sensitivity. The experimental results showed that the mechanical sensitivity of coated RDX particles, especially coated by calcium stearate, was lower than that of raw RDX particles. The research results could be used to develop the manufacturing process of insensitive explosive for military arsenal.

並列關鍵字

Surface modification of RDX ； Coating ； Stearic acid ； Calcium stearate ； Mechanical sensitivity

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