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The influence of the Semtex matrix on the thermal behavior and decomposition kinetics of cyclic nitramines
Authors: Yan Qi Long | Zeman Svatopluk | Elbeih Ahmed Ikhlas Mohamed | Akštein Zbyněk
Year: 2013
Type of publication: článek v odborném periodiku
Name of source: Central European Journal of Energetic Materials
Publisher name: Institut Przemyslu Organicznego
Place: Varšava
Page from-to: 509-528
Titles:
Language Name Abstract Keywords
cze Vliv Semtexové matrice na tepelné chování a rozkladnou kinetiku cyklických nitraminů Pomocí neizotermické TG a DSC bylo zkoumáno tepelné chování a rozkladná kinetika PBXs, pojených Semtex 10 matricí (Semtex) , obsahujících RDX (1,3,5-trinitro 1,3,5-triazinan), HMX (1,3,5,7-tetranitro-1, 3 ,5,7-tetrazokan), BCHMX (cis-1, 3,4,6 - tetranitrooktahydroimidazo [4,5-d] imidazol), HNIW (2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaaza-isowurtzitan) . Ukazuje se, že pouze jediný rozkladný proces dominuje u RDX-SE a HMX-SE zatímco zřejmý dvoustupňový proces probíhá u CL-20-SE a BCHMX-SE. Bylo zjištěno, že Semtexová matrice má malý vliv na distribuci aktivačních energií u RDX, BCHMX a ?-CL-20. Aktivační energie pro BCHMX-SE a CL-20-SE jsou téměř nezávislé na stupni konverze. Bylo prokázáno, že Semtex a Viton jsou lepší pojiva než C4 a Formex pro ?-CL-20 a RDX z hlediska jejich větší tepelnou stabilitu, a Formex je špatné pojivo pro BCHMX cyklické nitraminy; tepelný rozklad; aktivační energie; Semtex;PBX
eng The influence of the Semtex matrix on the thermal behavior and decomposition kinetics of cyclic nitramines The thermal behavior and decomposition kinetics of Semtex 10 polymeric matrix (Semtex) bonded PBXs containing RDX (1,3,5-trinitro 1,3,5-triazinane), HMX (1,3,5,7-tetranitro-1,3,5,7-tetrazocane), BCHMX (cis-1,3,4,6- tetranitrooctahydroimidazo [4,5-d] imidazole), HNIW (2,4,6,8,10,12-hexanitro- 2,4,6,8,10,12-hexaazaisowurtzitane) have been investigated by means of nonisothermal TG and DSC techniques. It is shown that only a single decomposition process occurs for RDX-SE and HMX-SE whilst an obvious two-step process occurs for CL-20-SE and BCHMX-SE. It has been found that the Semtex matrix has little influence on the activation energy distribution for RDX, BCHMX and ?-CL-20. The activation energies for BCHMX-SE and CL-20-SE decomposition are almost independent of the degree of conversion. It has been proved that Semtex and Viton A are better binders than C4 and Formex for ?-CL-20 and RDX based PBXs in terms of their greater thermal stability, and Formex is a poor binder for BCHMX. cyclic nitramines; thermal decomposition; activation energy; Semtex; PBX

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