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Preparation of DAP-4@Ti Core-Shell Composites with Enhanced Combustion Performance
Yang Liu1, Yan Li2, Huinan Wang3
1School of Environment and Safety Engineering, North University of China, Taiyuan 030051, China.
None:
To enhance the dispersion of nano-Ti powder within the composite system and improve the combustion performance of DAP-4, this study employs an ultrasonic composite method to prepare DAP-4@Ti core-shell structured composites. The morphology and structure of the composites are characterized using scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction. The effect of the nano-Ti content on the thermal decomposition properties of DAP-4 was analyzed with a synchronous thermal analyzer, and the ignition and combustion processes were further investigated through electric ignition methods. The results demonstrate that DAP-4@Ti composites exhibit a well-coated structure, with DAP-4 serving as the core and nano-Ti powder as the shell. The coating of nano-Ti powder significantly enhances the combustion performance of DAP-4, achieving a maximum combustion heat value of 8889 J/g, a peak flame temperature of 1234 °C, and the fastest flame propagation speed of 115 mm/s while simultaneously improving the thermal decomposition characteristics of the core-shell particles.
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