Highly Energetic Materials-Hosted 3D Inverse Opal-like Porous Carbon: Stabilization/Desensitization of Explosives

Moo Kwang Shin, Myeong Hoon Kim, Ga Yun Kim, Byunghoon Kang, Joo Seung Chae, Seungjoo Haam

Research output: Contribution to journalArticle

Abstract

The precise control of sensitivity to external stimuli, for example, impact, friction, and thermal energy, has been emphasized for highly energetic materials, including RDX and HMX. Such sensitivities could be controlled by adjusting the surface area or (in)organic additives; however, increased stability leads to a decrease in the explosives' performance. Here, high-energy-density molecules hosted in inverse opal-like porous carbon (IOC) nanocomposites demonstrate the mechanical stabilization and desensitization of RDX and HMX inside the carbon nanostructure using host-guest chemistry techniques. For this strategy, the uniform, vacant voids of the IOC were used to provide internal crystallization for the impact/frictional stabilization of explosives, and also to enhance the thermal reactivity by the high heat conductivity of IOC initiating detonation by thermally induced hotspot. The weight percentage of high explosives hosted by recrystallization at high temperatures and in vacuum reached ∼70%. After high explosives were embedded inside the IOC, the impact, friction and electrostatic stability was greatly increased (2-2.15-fold, 1.86-1.92-fold, and 1.25-2-fold, respectively) compared with free RDX and HMX. Also, addition of PVP as a binder controlled the effectiveness and efficiency of the carbon template, enabling control of the impact and friction sensitivity from 14.72 J to >79.43 J and from 295.81 to 352.80 N, respectively.

Original languageEnglish
Pages (from-to)43857-438864
Number of pages395008
JournalACS Applied Materials and Interfaces
Volume10
Issue number50
DOIs
Publication statusPublished - 2018 Dec 19

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Carbon
Stabilization
HMX
Friction
Detonation
Crystallization
Thermal energy
Binders
Electrostatics
Nanostructures
Thermal conductivity
Nanocomposites
Vacuum
Molecules
cyclonite
octogen
Temperature

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Shin, Moo Kwang ; Kim, Myeong Hoon ; Kim, Ga Yun ; Kang, Byunghoon ; Chae, Joo Seung ; Haam, Seungjoo. / Highly Energetic Materials-Hosted 3D Inverse Opal-like Porous Carbon : Stabilization/Desensitization of Explosives. In: ACS Applied Materials and Interfaces. 2018 ; Vol. 10, No. 50. pp. 43857-438864.
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Highly Energetic Materials-Hosted 3D Inverse Opal-like Porous Carbon : Stabilization/Desensitization of Explosives. / Shin, Moo Kwang; Kim, Myeong Hoon; Kim, Ga Yun; Kang, Byunghoon; Chae, Joo Seung; Haam, Seungjoo.

In: ACS Applied Materials and Interfaces, Vol. 10, No. 50, 19.12.2018, p. 43857-438864.

Research output: Contribution to journalArticle

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AU - Shin, Moo Kwang

AU - Kim, Myeong Hoon

AU - Kim, Ga Yun

AU - Kang, Byunghoon

AU - Chae, Joo Seung

AU - Haam, Seungjoo

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