HMX와 RDX의 열적 특성에 미치는 입자 크기의 영향

김승희; Seung Hee Kim

Applied Chemistry for Engineering, Vol.23, No.3, 352-357, June, 2012

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HMX와 RDX의 열적 특성에 미치는 입자 크기의 영향

Effect of Particle Size on Thermal Property of RDX and HMX

김승희^†

국방과학연구소

Seung Hee Kim^†

Agency for Defense Development, Daejeon 305-600, Korea

E-mail:

초록

1,3,5-trinitro-1,3,5-triazacylohexane (RDX)와 octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX)의 입자크기에 대한 열적 특성을 알아보기 위해서 DSC (Differential Scanning Calorimetry)와 TGA (Thermo-Gravimetric Analysis)를 사용하였다. 활성화 에너지와 빈도인자는 Kissinger 방법과 Vyazovkin 방법으로 계산하였다. DSC를 이용할 경우 RDX의 경우에는 고에너지 분자화약의 높은 분해열에 의하여 입자크기에 따른 활성화에너지의 경향성이 없었으나, TGA를 이용할 경우 입자크기가 클수록 활성화에너지가 커짐을 알 수 있었다. 그러나 HMX의 경우에는 DSC와 TGA의 방법 모두 입자 크기에 따라 활성화 에너지가 커지는 경향성을 보였다. 또한, Vyazovkin 방법을 이용하여 RDX와 HMX의 분해정도에 따른 활성화 에너지의 변화로 분해반응의 메커니즘을 이해할 수 있었다.

Techniques of thermal analyses such as DSC and TGA have been used in the study of activation energy (Ea) and frequency factor (A) depending on the particle size of RDX and HMX. Activation energy and frequency factor were calculated by Kissinger’s method and Vyazovkin’s method. As the particle size of RDX increased, TGA showed activation energy increased, but DSC didn’t show. However, In case of HMX, as the particle size increased, both of DSC and TGA showed increase in activation energy. Moreover, Vyazovkin’s method can obtain activation energy and mechanism according to decomposition of RDX and HMX.

Keywords:RDX;HMX;Kissinger’s method;Vyazovkin’s method;activation energy (Ea)

[References]

Bachmann WE, Horton WJ, Jenner EL, MacNaughton NW, Scott LB, J. Am. Chem. Soc., 71, 1843 (1949)
Fisher D, Klapoetke T, Zeitschrift fuer Anorganische und Allgemeine Chemie., 637, 660 (2011)
Bachmann WE, Horton WJ, Jenner EL, MacNaughton NW, Scott LB, J. Am. Chem. Soc., 73, 2769 (1951)
Burnham AK, Weese RK, Weeks BL, J. Phys. Chem. B, 108(50), 19432 (2004)
Mathew S, Krishnan K, Ninan KN, PROPELLANT-EXPLOS-PYROTECH, 23(3), 150 (1998)
Lee JS, Hsu CK, Thermochim. Acta., 392, 173 (2002)
Lee JS, Hsu CK, Thermochim. Acta., 185, 367 (2001)
Fathollahi M, Pourmortazavi SM, Hosseini SG, J. Energ.Mater., 26, 52 (2008)
Kissinger HE, Anal. Chem., 29, 217 (1957)
Vyazovkin S, J. Therm. Anal., 49, 1493 (1997)
Long GT, Vyazovkin S, Thermal analysis of high explosives; Liquid state decomposition of RDX., 31, 12 (2000)
Vyazovkin S, Int. J. Chem. Kine., 28, 95 (1996)

[1] Bachmann WE, Horton WJ, Jenner EL, MacNaughton NW, Scott LB, J. Am. Chem. Soc., 71, 1843 (1949)

[2] Fisher D, Klapoetke T, Zeitschrift fuer Anorganische und Allgemeine Chemie., 637, 660 (2011)

[3] Bachmann WE, Horton WJ, Jenner EL, MacNaughton NW, Scott LB, J. Am. Chem. Soc., 73, 2769 (1951)

[4] Burnham AK, Weese RK, Weeks BL, J. Phys. Chem. B, 108(50), 19432 (2004)

[5] Mathew S, Krishnan K, Ninan KN, PROPELLANT-EXPLOS-PYROTECH, 23(3), 150 (1998)

[6] Lee JS, Hsu CK, Thermochim. Acta., 392, 173 (2002)

[7] Lee JS, Hsu CK, Thermochim. Acta., 185, 367 (2001)

[8] Fathollahi M, Pourmortazavi SM, Hosseini SG, J. Energ.Mater., 26, 52 (2008)

[9] Kissinger HE, Anal. Chem., 29, 217 (1957)

[10] Vyazovkin S, J. Therm. Anal., 49, 1493 (1997)

[11] Long GT, Vyazovkin S, Thermal analysis of high explosives; Liquid state decomposition of RDX., 31, 12 (2000)

[12] Vyazovkin S, Int. J. Chem. Kine., 28, 95 (1996)