Thermo-analytical study of glycidyl azide polymer and its effect on different cyclic nitramines

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F18%3A39911913" target="_blank" >RIV/00216275:25310/18:39911913 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.tca.2018.01.003" target="_blank" >http://dx.doi.org/10.1016/j.tca.2018.01.003</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.tca.2018.01.003" target="_blank" >10.1016/j.tca.2018.01.003</a>

Result language

angličtina

Original language name

Thermo-analytical study of glycidyl azide polymer and its effect on different cyclic nitramines

Original language description

In this work, glycidyl azide polymer (GAP) has been prepared and studied. In addition, a series of different plastic bonded explosive (PBXs) based on GAP were prepared using five cyclic nitramines, namely. 1,3,5-trinitro-1,3,5-triazinane (RDX) and β-1,3,5,7-tetranitro-1,3,5,7-tetrazocane (β-HMX), cis-1,3,4,6-tetranitrooctahydroimidazo-[4,5-d]imidazole (BCHMX), RS-ε-2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (RS-ε-CL-20) and 4,10-dinitro-2,6,8,12-tetraoxa-4,10-diazaisowurtzitane (TEX). The thermal behavior and decomposition kinetics have been investigated by means of the nonisothermal TG and DSC techniques and the decomposition kinetics were obtained by the isoconversional methods (Kissinger and modified Kissinger-Akahira-Sunose (KAS) methods). It was indicated that GAP has a significant effect on the activation energy distribution for the thermal decomposition of cyclic nitramines and it motivates the initial autocatalysis effect of RDX and CL-20. The mean activation energies of the thermal decomposition were reduced comparing with the individual nitramines, and their values are 187.7, 191.6, 110.7, 118.5, 283.8, 146.1, and 171.6 kJ.mol-1 for BCHMX/GAP, CL-20/GAP, RDX/GAP, HMX/GAP peak 1, HMX/GAP peak 2, TEX/GAP and GAP respectively. The GAP admixture changes an inversely proportional linear relationship between the mentioned energies and longest lengths of the N-N bonds in nitramine molecules into a directly proportional one for the nitramines in the GAP-PBXs due to the possibility of the GAP complex formation with the studied nitramines. The results show that BCHMX/GAP has a good thermal stability reached the same level of TEX/GAP while the thermal stability of RDX/GAP considered the lowest value of all the studied PBXs.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10403 - Physical chemistry

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

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

Name of the periodical

Thermochimica Acta

ISSN

0040-6031

e-ISSN

—

Volume of the periodical

660

Issue of the periodical within the volume

February

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

14

Pages from-to

110-123

UT code for WoS article

000426226200014

EID of the result in the Scopus database

2-s2.0-85040246340