CAJ | 학술논문

通过热重(TG)和差示扫描量热(DSC)实验研究了锆粉粒径对锆/高氯酸钾混合含能体系热分解性能的影响。DSC显示，纯高氯酸钾主要存在3个吸热峰，最后1个峰前有1个小肩峰。加入1μm锆粉后，高氯酸钾中间的吸热峰裂分为1个小吸热峰和1个放热峰，同时使最后1个吸热峰前的肩峰消失，峰形也变得更加尖锐。相比1μm锆粉，-200目（约74μm）锆粉只改变了高氯酸钾的最后1个峰形。运用Kissinger法和Ozawa法计算活化能，发现小粒径锆粉的加入使高氯酸钾的活化能降低了40kJ?mol-1，而大粒径锆粉却使其活化能增加了超过1倍。显然，1μm锆粉具有更高的反应活性，其催化效果更明显。
통과열중(TG)화차시소묘량열(DSC)실험연구료고분립경대고/고록산갑혼합함능체계열분해성능적영향。DSC현시，순고록산갑주요존재3개흡열봉，최후1개봉전유1개소견봉。가입1μm고분후，고록산갑중간적흡열봉렬분위1개소흡열봉화1개방열봉，동시사최후1개흡열봉전적견봉소실，봉형야변득경가첨예。상비1μm고분，-200목（약74μm）고분지개변료고록산갑적최후1개봉형。운용Kissinger법화Ozawa법계산활화능，발현소립경고분적가입사고록산갑적활화능강저료40kJ?mol-1，이대립경고분각사기활화능증가료초과1배。현연，1μm고분구유경고적반응활성，기최화효과경명현。
The influence of the zirconium particle size on thermal behaviors of Zr/KClO4 was studied by use of thermal analysis(TG-DSC). Without zirconium powder, DSC curves of KClO4 show three main endothermic peaks and a small acromion in front of the third peak. When added in zirconium powder (1μm) , the middle peak splited into two peaks with one small endothermic peak and the other exothermic peak, however, the last peak became sharp with the small endothermic acromion disappeared. Compared to zirconium powder (1μm), thezirconium powder (-200 mesh) influenced the last peak only. Within small zirconium grain, the decomposition activation energy of KClO4was decreased by 40kJ?mol-1, but increased one more time with large zirconium grain. Obviously,1μm zirconium powder has a better reactivity thanthat of -200 mesh powder, so has a more obvious catalytic effect.