Study of the thermal decomposition of 2,2’,4,4’,6,6’- hexanitrostilbene

Gilson da Silva*
National Industrial Property Institute
Rio de Janeiro – Brazil
gilsondasilva@uol.com.br

Koshum Iha
Technological Institute of Aeronautics
São José dos Campos – Brazil
koshun@ita.br

Andreza M. Cardoso
Institute of Aeronautics and Space
São José dos Campos – Brazil
andreza.moura4.@hotmail.com

Elizabeth C. Mattos
Institute of Aeronautics and Space
São José dos Campos – Brazil
beth@iae.cta.br

Rita de Cássia L.Dutra
Institute of Aeronautics and Space
São José dos Campos – Brazil
chefia.aqi@iae.cta.br

*author for correspondence

Abstract:

2,2’, 4,4’, 6,6’- hexanitrostilbene (HNS) is an energetic material, a nitroaromatic compound, with thermal and chemical stabilities, which is employed in the aerospace industry. In this work, the Arrhenius parameters (activation energy and pre-exponential factor) of thermal decomposition reaction were studied and the results were compared with the values reported in the literature. The Kissinger method, applied to DSC’s non-isothermal data of the decomposition temperature was chosen for this study. The activation energy determined for the thermal decomposition of HNS revealed values from 428 kJ.molˉ¹ to 477 kJ.molˉ¹, under the experimental conditions employed.

Keywords:

Explosives, HNS, DSC, FT-IR.