KDNBF 形貌控制及其对热分解行为和感度的影响

doi:10.3866/PKU.WHXB20100950

Abstract

Abstract:

The potassium salt of 7-hydroxy-4,6-dinitro-5,7-dihydrobenzofuroxanide (KDNBF) was prepared by a reaction of the sodium salt of DNBF with potassium sulfate in aqueous solution. Samples of KDNBF with different morphologies were obtained by adding various surfactants. The effect of a single surfactant on the sample morphology was determined withpowder X-ray diffraction (XRD) data. The thermal decomposition behaviors of KDNBF with different shapes were studied using differential scanning calorimetry(DSC) and thermogravimetry(TG) analyses. The kinetic parameters of the exothermic processes were studied by applying the Kissinger 's and Ozawa-Doyle 's methods. The results show that the spherical sample has a lower decomposition temperature and higher reaction activation energy than the other forms of the sample. Furthermore, impact sensitivity, flame sensitivity, and friction sensitivity tests indicated that the spherical KDNBF sample has stronger friction and impact sensitivities and weaker flame sensitivity.

Key words: Thermal behavior, Potassium salt of 7-hydroxy-4,6-dinitro-5,7-dihydrobenzo-furoxanide, Morphology, Sensitivity, Surfactant

FENG Jin-Ling, ZHANG Jian-Guo, ZHANG Tong-Lai, LI Zhi-Min, YANG Li, WANG Shao-Zong. Morphology Control and Its Influence on the DecompositionBehavior and Sensitivity of KDNBF[J]. Acta Phys. -Chim. Sin. 2010, 26(10), 2613-2618. doi: 10.3866/PKU.WHXB20100950

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Morphology Control and Its Influence on the DecompositionBehavior and Sensitivity of KDNBF

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