Thermal decomposition mechanism of particulate core-shell KClO3-HMX composite energetic material
IR@NISCAIR: CSIR-NISCAIR, New Delhi - ONLINE PERIODICALS REPOSITORY (NOPR)
View Archive Info| Field | Value | |
| Creator |
Liao, Lin-Quan
Yan, Qi-Long Zheng, Ya Song, Zhen-Wei Li, Jun-Qiang Liu, Peng |
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| Date |
2011-12-09T11:58:08Z
2011-12-09T11:58:08Z 2011-10 |
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| Identifier |
0975-1017 (Online); 0971-4588 (Print)
http://hdl.handle.net/123456789/13248 |
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| Description |
393-398
The thermal decomposition mechanism of a newly designed composite material KClO<sub>3</sub>-HMX (KC-HMX) is investigated by combined TG-DSC-FTIR technique and T/Jump in-situ thermolysis cell/FTIR (T/Jump FTIR) technique<span style="font-family:" ms="" mincho";mso-bidi-font-family:"ms="" mincho";letter-spacing:="" -.1pt"="" lang="EN-US">．It is shown that KC-HMX began to decompose at about 266°C without melting, and the fast stage of mass loss at the temperature range of 268.4~290.1°C is considered to be the result of the thermolysis and complex reactions of KClO<sub>3</sub> and HMX with energy release of 1859 J.g<sup>-1</sup>, which exceeded that of pure HMX about 40%. It is also shown that CO, CO<sub>2</sub>, NO<sub>2</sub> and H<sub>2</sub>O were the main gaseous products. The T/Jump FTIR analysis showed that the competing reactions of N-N and C-N bonds cleavage occurred in initial stage of HMX decomposition are greatly affected by KClO<sub>3</sub>. In contrast of pure HMX, there is no CH<sub>2</sub>O and HCN detected in its thermolysis products. In presence of electronegative oxygen radical produced by thermolysis of KClO<sub>3</sub> oxidized CH<sub>2</sub>O and HCN through gas-phase reaction “(NO<sub>2</sub>+4O<sub>2</sub>) + (2N<sub>2</sub>O+5CH<sub>2</sub>O) → 5NO+3CO+2CO<sub>2</sub>+5H<sub>2</sub>O”, which is probably the dominating reaction, being immediately followed by the decomposition reaction of HMX. </span> |
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| Language |
en_US
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| Publisher |
NISCAIR-CSIR, India
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| Rights |
<img src='http://nopr.niscair.res.in/image/cc-license-sml.png'> <a href='http://creativecommons.org/licenses/by-nc-nd/2.5/in' target='_blank'>CC Attribution-Noncommercial-No Derivative Works 2.5 India</a>
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| Source |
IJEMS Vol.18(5) [October 2011]
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| Subject |
TG-DSC-FTIR
HMX Potassium chlorate Decomposition mechanism |
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| Title |
Thermal decomposition mechanism of particulate core-shell KClO3-HMX composite energetic material
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| Type |
Article
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