화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Applied Chemistry for Engineering, Vol.28, No.2, 214-220, April, 2017
DOI10.14478/ace.2017.1002  Export Citation
결정화/응집에 의한 구형 Al/RDX/AP 에너지 복합체 제조 및 그 열분해 특성
Preparation of Al/RDX/AP Energetic Composites by Drowning-out/Agglomeration and Their Thermal Decomposition Characteristics
이정환, 심홍민, 김재경, 김현수1, 구기갑†
  • 서강대학교 화공생명공학과
  • 1국방과학연구소
Jeong-Hwan Lee, Hong-Min Shim, Jae-Kyeong Kim, Hyoun-Soo Kim1, and Kee-Kahb Koo†
  • Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 04107, Korea
  • 1Agency for Defense Development, Daejeon 34186, Korea
E-mail:
초록
결정화/응집(drowning-out/agglomeration, D/A) 공정을 이용하여 평균 입도 550 μm인 구형 Al/RDX/AP 에너지 복합체를 제조하였다. SEM과 X-선 분광분석을 이용해 복합체의 표면 구조와 Al의 분포를 분석하였다. 열분석 결과 D/A 공정에 의해 제조된 Al/RDX/AP 복합체는 물리적 혼합에 의한 복합체와 비교하여 분해 개시 온도가 약 50 ℃ 정도 낮아졌으며, 동시에 활성화 에너지의 증가에 의해 열적 안정성도 상승하는 것으로 확인되었다. AP의 1차 분해 구간에서는 물리적 혼합과 D/A 공정에 의한 복합체 모두 Prout-Tompkins 모델에 의해 잘 모사되었다. 그러나 AP의 2차 분해 구간에서는 물리적 혼합에 의해 제조된 복합체는 zero-order 모델로 해석되는 반면, D/A 공정에 의해 제조된 복합체는 contracting volume 모델로 해석됨을 알 수 있었다.
The spherical Al/RDX/AP composites with an average size of 550 μm were successfully prepared by drowning-out/agglomeration (D/A) process. The surface morphology and dispersion of Al particles of those composites were investigated using SEM and EDS (energy dispersive spectrometry). As a result of thermal analysis, the onset temperature of thermal decomposition of the Al/RDX/AP composites by the D/A process was found to decrease about 50 °C and their thermal stability was shown to be relatively enhanced due to the increase of activation energy compared to those of using the physical mixing method. In the first decomposition region of AP, Prout-Tompkins model was shown to describe well the thermal decomposition of both composites by the physical mixing and D/A process. On the other hand, in the second decomposition region of AP, the decomposition mechanisms of composites by the physical mixing and D/A process were explained by the zero-order and contracting volume model, respectively.
Keywords:ammonium perchlorate (AP);RDX;thermal decomposition;crystallization
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