Coating of LiBH4 and Its Effect on the Decomposition of RDX and AP

• Autorzy: Ding X. , Shu Y. , Chen Z. , Liu N. , Gou B. , Zhang J. , Wu M. , Xie G. , Dang T.

Identyfikatory

DOI

10.22211/cejem/67678

• Języki publikacji: EN

Abstrakty

EN

The novel fuel additive LiBH4 was introduced as an energetic component for its outstanding hydrogen content, perfect burning performance and high reactivity. In order to limit the hygroscopicity and to improve the stability in the air, LiBH4 was coated on the surface with wax and polyester carbonate. The final product was characterized by scanning electron microscopy (SEM), X-ray photoelectron energy spectroscopy (XPS) and Raman spectroscopy, while the stability in air was investigated by regular checking of variations in weight. The results show that a uniform coating layer was formed on the surface of the LiBH4, and the coverage was estimated from the boron content as approximately 82%. A healing effect was confirmed on defective surfaces exposed to air; the coating layer improves the relative stability by 50.7%. Furthermore, LiBH4 as an additive to promote the thermal decomposition of 1,3,5-trinitro-1,3,5-trazinane (RDX) and ammonium perchlorate (AP) was explored by differential scanning calorimetry (DSC), in which the catalytic effects of pure LiBH4 and coated LiBH4 were compared, and indicated that the coating does not decrease the reactivity of LiBH4. It is suggested that surface coating with some inert materials is a simple and effective method for improving the storage and performance of LiBH4, while ensuring its reactivity.

Słowa kluczowe

EN

coating; hydride; additive; hygroscopicity; DSC

• Czasopismo: Central European Journal of Energetic Materials
• Rocznik: 2017
• Tom: Vol. 14, no. 1
• Strony: 134--151
• Opis fizyczny: Bibliogr. 44 poz., rys., tab.

Twórcy

autor

Ding X.

• State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
• State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi’an, Shaanxi 710065, China

autor

Shu Y.

• State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
• State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi’an, Shaanxi 710065, China

autor

Chen Z.

• State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi’an, Shaanxi 710065, China
• Xi’an Modern Chemistry Research Institute, Xi’an, Shaanxi 710065, China

autor

Liu N.

• State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi’an, Shaanxi 710065, China
• Xi’an Modern Chemistry Research Institute, Xi’an, Shaanxi 710065, China

autor

Gou B.

• State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi’an, Shaanxi 710065, China
• Xi’an Modern Chemistry Research Institute, Xi’an, Shaanxi 710065, China

autor

Zhang J.

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

autor

Wu M.

• State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi’an, Shaanxi 710065, China
• Xi’an Modern Chemistry Research Institute, Xi’an, Shaanxi 710065, China

autor

Xie G.

• School of Chemical Engineering and Material, Northwestern University, Xi’an, Shaanxi 710069, China

autor

Dang T.

• School of Chemical Engineering and Material, Northwestern University, Xi’an, Shaanxi 710069, China

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).