A novel energetic composite with a special sandwich microstructure: RDX/expanded graphite intercalation composite. (March 2020)

• Record Type: Journal Article
• Authors: Ma, X L; Chen, Sh S; Chen, K; Li, L J; Zhao, J J; Yang, X B; Shang, F Q; Lv, X J; Shu, Q H
• Is Part Of: Journal of physics. Volume 1507:Number 2(2020)
• Publication Date: 2020-03
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1507/2/022013
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: In this paper, the RDX/expanded graphite (EG) intercalation composites were prepared by solvent/anti-solvent process to recrystallize RDX crystals into the holes, gaps and grooves of EG with controllable embedding ratio (maximum 87.0 wt%) and crystal size. RDX in the composites was in the most stableα-phase, which was benefit for its further application in the military industry. The stability and sensitivity of RDX were improved with higher melting and thermolysis temperature, activation enthalpy (Δ H ≠ ), critical temperature of thermal explosion ( T b ) and lower mechanical sensitivity. The advanced half-coated parallel multi-sandwiches microstructure of RDX/EG intercalation composites possessed two effects: (i) high heat conduction and (ii) hot spots isolation of the carbon microstructure, which were the key to higher performance.