Investigation of different thermal analysis techniques to determine the decomposition kinetics of epsilon-2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane with reduced sensitivity and its cured PBX

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F17%3A39911114" target="_blank" >RIV/00216275:25310/17:39911114 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jaap.2017.05.020" target="_blank" >http://dx.doi.org/10.1016/j.jaap.2017.05.020</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jaap.2017.05.020" target="_blank" >10.1016/j.jaap.2017.05.020</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Investigation of different thermal analysis techniques to determine the decomposition kinetics of epsilon-2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane with reduced sensitivity and its cured PBX

Popis výsledku v původním jazyce

ε-2,4,6,8,10,12-Hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (CL-20) is considered the most powerful explosive which has practical application. A reduced sensitivity of CL-20 (RS-CL20) has been obtained by a recrystallization method. In this work, different thermal analysis techniques were investigated to determine the decomposition kinetics RS-CL20 and its polyurethane composite (RS-CL20/HTPB). The polyurethane matrix was based on hydroxyl-terminated polybutadiene (HTPB) and other additives cured by hexamethylene diisocyanate (HMDI). The thermal behavior of the studied samples was studied by Differential Scanning Calorimetry (DSC). The decomposition kinetics were obtained from the measurements of Thermogravimetry analysis (TGA) and Vacuum Stability Test (VST). The isoconversional (model-free) methods which are Kissinger method, Ozawa, Flynn, and Wall (OFW) method and Kissinger–Akahira–Sunose (KAS) method were used. Furthermore, the Advanced Kinetics and Technology Solution (AKTS) software was used to determine the kinetic parameters of the studied samples in order to provide a comparison. It was concluded that the RS-CL20/HTPB has lower decomposition temperature than pure RS-CL20. The polyurethane matrix has obvious effect on decreasing the activation energy of pure RS-CL20. Activation energies calculated by the three different methods are in the same range of AKTS software results. Successfully, VST results were investigated to predict the kinetic parameters of RS-CL20 and its PBX.

Název v anglickém jazyce

Investigation of different thermal analysis techniques to determine the decomposition kinetics of epsilon-2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane with reduced sensitivity and its cured PBX

Popis výsledku anglicky

ε-2,4,6,8,10,12-Hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (CL-20) is considered the most powerful explosive which has practical application. A reduced sensitivity of CL-20 (RS-CL20) has been obtained by a recrystallization method. In this work, different thermal analysis techniques were investigated to determine the decomposition kinetics RS-CL20 and its polyurethane composite (RS-CL20/HTPB). The polyurethane matrix was based on hydroxyl-terminated polybutadiene (HTPB) and other additives cured by hexamethylene diisocyanate (HMDI). The thermal behavior of the studied samples was studied by Differential Scanning Calorimetry (DSC). The decomposition kinetics were obtained from the measurements of Thermogravimetry analysis (TGA) and Vacuum Stability Test (VST). The isoconversional (model-free) methods which are Kissinger method, Ozawa, Flynn, and Wall (OFW) method and Kissinger–Akahira–Sunose (KAS) method were used. Furthermore, the Advanced Kinetics and Technology Solution (AKTS) software was used to determine the kinetic parameters of the studied samples in order to provide a comparison. It was concluded that the RS-CL20/HTPB has lower decomposition temperature than pure RS-CL20. The polyurethane matrix has obvious effect on decreasing the activation energy of pure RS-CL20. Activation energies calculated by the three different methods are in the same range of AKTS software results. Successfully, VST results were investigated to predict the kinetic parameters of RS-CL20 and its PBX.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Analytical and Applied Pyrolysis

ISSN

0165-2370

e-ISSN

—

Svazek periodika

126

Číslo periodika v rámci svazku

July

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

267-274

Kód UT WoS článku

000407984300029

EID výsledku v databázi Scopus

2-s2.0-85020162447