Synergistic Regulation of Combustion Behavior and Safety Characteristics of Graphene Modified Core-Shell Al@AP...

Area of Science:

• Energetic Materials Science
• Materials Chemistry
• Combustion Science

Background:

• Improving energy release and safety of composite solid propellants is critical.
• Graphene's thermal conductivity and lubrication properties make it a promising additive for energetic materials.

Purpose of the Study:

• To investigate the effects of graphene doping on Al@AP core-shell particles.
• To evaluate the structure, thermal decomposition, combustion, and safety performance of graphene-doped Al@AP.

Main Methods:

• In-situ deposition method for preparing graphene-doped Al@AP core-shell particles.
• Analysis of structure, thermal decomposition (DSC/TGA), and combustion characteristics (closed-bomb, laser ignition).
• Assessment of impact and friction sensitivity to evaluate safety performance.

Main Results:

• Graphene uniformly doped Al@AP core-shell structures.
• Graphene reduced thermal decomposition temperature and increased pressure rise rates and combustion intensity up to 1.0 wt.%.
• Graphene significantly improved safety by reducing impact and friction sensitivity.

Conclusions:

• Graphene doping enhances Al@AP solid propellant performance through improved decomposition, combustion, and safety.
• Optimal graphene content is crucial for balancing performance benefits and avoiding detrimental effects.
• This research provides design criteria for graphene-doped Al@AP as effective solid propellants.