Research on the Mechanism and Kinetics of Polymorphic Transitions of ε CL-20 in Composite Systems

• Autorzy: Guo X.-Y. , Zhang P. , Xu J.-J. , Wang Z.-H. , Jiao Q.-J.
• Języki publikacji: EN

Abstrakty

EN

In order to explore the polymorphic transition law for ε-CL-20 in composite systems, the polymorphic transition process of pure ε-CL-20 crystals stimulated by heat was investigated by the X-ray Diffraction (XRD) method, and the kinetic parameters of the polymorphic transition process were calculated (including the apparent activation energy Ea and the pre-exponential factor lnA). Meanwhile the effects of different additives on the polymorphic transition process and kinetics of ε-CL-20 were explored in detail. The experimental results showed that the ε-form tends to transform into the γ- form on heating and that the Ea and lnA for the transition process were 209.97 kJ/mol and 57.47, respectively. The first group of additives clearly promoted the polymorphic transition of ε-CL-20 and lowered the initial transition temperature and the activation energy. The second and third groups of additives inhibited the polymorphic transition of ε-CL-20 and raised the initial transition temperature and the activation energy.

Słowa kluczowe

EN

polymorphic transition; kinetics; activation energy; transition temperature

• Czasopismo: Central European Journal of Energetic Materials
• Rocznik: 2015
• Tom: Vol. 12, no. 4
• Strony: 689--702
• Opis fizyczny: Bibliogr. 23 poz., rys., tab.

Twórcy

autor

Guo X.-Y.

• State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

autor

Zhang P.

• State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

autor

Xu J.-J.

• Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, China

autor

Wang Z.-H.

• Liaoning Qingyang Special Chemical Co. Ltd, Liaoyang 111002, China

autor

Jiao Q.-J.

• State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

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