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Chemical Research in Chinese Universities ›› 2005, Vol. 21 ›› Issue (1): 100-103.

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Thermal Behavior, Non-isothermal Decomposition Reaction Kinetics of Copper(Ⅱ) Salt of 4-Hydroxy-3,5-dinitropyridine and Its Application in Propellant

CHEN Pei1, ZHAO Feng-qi1, LUO yang1, HU Rong-zu1,2, GAO Sheng-li1, ZHENG Yu-mei3, DENG Min-hi3, GAO Yin1   

  1. 1. Xi′an Modern Chemistry Research Institute, Xi′an 710065, P. R. China;
    2. Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Department of Chemistry, Northwest University, Xi′an 710069, P. R. China;
    3. Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
  • Received:2003-12-12 Online:2005-01-24 Published:2011-07-27
  • Supported by:

    Supported by the National Defense Industry Foundation(No.BZJ030901) and the Science and Technology Foundation of the National Defense Key Laboratory of Propellant and Explosive Combustion of China(No.51455010).

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Abstract: The thermal behavior and kinetic parameters of the major exothermic decomposition reaction of the title compound in a temperature-programmed mode were studied by means of TG-DTG and DSC.The critical temperature of thermal explosion was calculated.The effect of the title compound on the combustion characteristic of composition modifier double base propellant containing RDX was explored with a strand burner.The results show that the kinetic model function in differential forms, the apparent activation energy(Ea) and the pre-exponential factor(A) of the major exothermic decomposition reaction are 3(1-α)[-ln(1-α)]2/3, 190.56 kJ/mol and 1013.39 s-1, respectively.The critical temperature of thermal explosion of the compound is 353.08 ℃.The kinetic equation of the major exothermic decomposition process of the title compound at 0.1 MPa could be expressed as dα/dT=1014.65(1-α)[-ln(1-α)]2/3 e-2.2920×104/T.As an auxiliary catalyzer, the title compound can help the main catalyzer of lead salt of 4-hydroxy-3,5-dinitropyridine to accelerate the burning rate and reduce the pressure exponent of RDX-CMDB propellant.

Key words: Thermal behavior, Decomposition kinetics, Copper(Ⅱ) salt of 4-hydroxy-3,5-dinitropyridine, Application, Propellant