Volume 12, Issue 4 (3-2018)                   مواد پرانرژی 2018, 12(4): 265-273 | Back to browse issues page

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

پارامترهای تجزیه حرارتی ماده منفجره پلاستیکی PBXN-111. مواد پرانرژی. 2018; 12 (4) :265-273
URL: http://isaem.ir/article-1-1088-en.html
Abstract:   (945 Views)

PBXN-111 is a cast cured underwater explosive containing RDX, ammonium perchlorate, aluminium powder and HTPB binder. In this research, the kinetics and thermodynamic properties of thermal decomposition of this PBX investigated by Kissinger and Flynn-Wall-Ozawa (FWO) methods based on differential scanning calorimetry under non-isothermal condition with heating rate of 5, 10, 15 and 20 °C/min. Results showed that this charge has thermal stability exceed 200°C. As heating rate in thermal analysis increased, decomposition temperature of RDX, as first unstable ingredient in PBX, increased slightly. Activation energy of RDX decomposition reaction in PBXN-111 increased 16% in comparison with pure RDX. Average enthalpy, Gibbs free energy and entropy of thermal activation were 311.34 kJ/mol, 122.57 kJ/mol and -373.69 J/mol.K, respectively. In addition, average amounts of critical temperature for thermal explosion and 500-day cookoff temperature of PBXN-111 are 198.35 °C and 120.95 °C, respectively.

Full-Text [PDF 1106 kb]   (207 Downloads)    
Type of Study: Research | Subject: سینتیک
Published: 2018/04/21

Add your comments about this article : Your username or Email:

© 2019 All Rights Reserved | Iranian Scientific Association of Energetic Materials

Designed & Developed by : Yektaweb