超细高氯酸铵复合粒子的制备及性能研究

发布时间：2018-01-17 22:23

  本文关键词：超细高氯酸铵复合粒子的制备及性能研究　出处：《含能材料》2016年03期 　论文类型：期刊论文

  更多相关文章： 超细高氯酸铵(AP) 复合粒子 感度 热分解性能 动力学

【摘要】：为降低超细高氯酸铵(AP)的机械感度,以纳米石墨粉、普通石墨粉和炭黑为钝感改性剂,采用气流冲击粉碎法对超细AP进行表面改性,制备了超细AP/纳米石墨(AP-1)、超细AP/石墨(AP-2)、超细AP/炭黑(AP-3)复合粒子以及空白超细AP对比样(AP-C)。采用场发射扫描电子显微镜(SEM)、微米粒度仪、X射线粉末衍射仪(XRD)及傅里叶红外光谱仪(FTIR),表征了复合粒子的形貌和结构;用撞击感度仪和摩擦感度仪,测试对比了复合前后超细AP粒子的机械感度;采用差示扫描量热仪(DSC),测试了复合粒子的热分解性能。结果表明,相比于AP-C,AP-1、AP-2和AP-3的撞击感度分别降低了18.2%、21.2%和8.9%,AP-1、AP-2和AP-3的摩擦感度分别降低了12.5%、12.5%和8.3%,10℃·min-1的升温速率下,AP-1、AP-2和AP-3的高温分解峰分别提前了75.4,64.2℃和44.4℃。
[Abstract]:In order to reduce the mechanical sensitivity of ultrafine ammonium perchlorate (APO), the surface of ultrafine AP was modified by airflow impact comminution with nano-graphitic powder, ordinary graphitic powder and carbon black as insensitive modifiers. Ultrafine APP / nano-graphite (AP-1) and ultrafine APP / graphite (AP-2) were prepared. Ultrafine AP- / carbon black AP-3) composite particles and blank ultrafine AP contrast sample AP-CU. Field emission scanning electron microscope (SEM) and micrometer particle size analyzer were used. The morphology and structure of the composite particles were characterized by X-ray powder diffractometer (XRD) and Fourier transform infrared spectroscopy (FTIR). The mechanical sensitivities of ultrafine AP particles before and after composite were measured and compared by impact sensitivity meter and friction sensitivity meter. The thermal decomposition properties of the composite particles were measured by differential scanning calorimeter (DSCC). The results show that the thermal decomposition properties of the composite particles are higher than that of AP-Con AP-1. The impact sensitivity of AP-2 and AP-3 decreased by 18.2% and 8.9%, respectively, and the friction sensitivity of AP-1AP-2 and AP-3 decreased by 12.5%, respectively. At the heating rate of 10 鈩，

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