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Researches on Thermal Decomposition Kinetics of Composite Modified Double‐base Propellants
Author(s) -
Tang Zhan,
Ren Yan,
Yang Li,
Zhang Tonglai,
Qiao Xiaojing,
Zhang Jianguo,
Zhou Zunning,
Zhao Fengqi,
Dang Yongzhan,
Xu Siyu,
Yi Jianhua
Publication year - 2011
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201190096
Subject(s) - thermal decomposition , chemistry , thermogravimetric analysis , propellant , activation energy , kinetics , composite number , differential scanning calorimetry , decomposition , base (topology) , analytical chemistry (journal) , thermodynamics , composite material , materials science , organic chemistry , mathematical analysis , physics , mathematics , quantum mechanics
The thermal decomposition kinetics of composite modified double‐base (CMDB) propellants with a series of contents of hexogeon (RDX) was investigated by using parameters of T eo , T i , T p , T f , T b , T a , E , lg A and Δ H , which were obtained from using a CDR‐4P differential scanning calorimeter (DSC) and Perkin‐Elmer Pyris 1 thermogravimetric analyzer (TG) analyses with heating rates of 5, 10, 15 and 20 K/min. Reliable activation energy was calculated using Flynn‐Wall‐Ozawa method before analyzing the thermal decomposition mechanism. TG‐DTG curves were treated with Malek method in order to obtain the reaction mechanisms. The obtained results show that the thermal decomposition mechanisms with the conversion from 0.2 to 0.4 was f ( α )1/2 α , and with the conversion from 0.5 to 0.7 was f ( α )(1/4)(1− α )[−ln(1− α )] −3 .