A Rapid Method for Preparing Transient Thermal Expansion Cracking Agent and Its Thermal Decomposition Kinetics...

Area of Science:

• Materials Science
• Chemical Engineering
• Combustion Science

Background:

• Transient thermal expansion cracking agents are vital for energy development and infrastructure.
• Novel high-performance materials are needed to meet increasing demands.

Purpose of the Study:

• To synthesize a novel transient thermal expansion cracking agent.
• To investigate its thermal decomposition characteristics and kinetics.

Main Methods:

• Vortex oscillation mixing for material preparation.
• Thermogravimetric analysis (TG/DTG) for thermal decomposition.
• Infrared spectroscopy and TG-MS for functional group analysis.
• Isoconversion methods (DAEM, OFWI, KASI) for kinetic analysis.

Main Results:

• Successful synthesis of the cracking agent using Shenmu coal and potassium perchlorate.
• TG/DTG analysis revealed three decomposition stages with rapid mass loss (65.04% at 15 °C/min) and total mass loss of 86.09%.
• Functional group evolution and thermal decomposition mechanisms were elucidated.
• Thermal decomposition kinetics were analyzed in two stages, with the first stage modeled by DAEM and the second stage kinetic parameters determined by OFWI and KASI.

Conclusions:

• The vortex oscillation mixing method is cost-effective and efficient for producing this novel cracking agent.
• Detailed understanding of the thermal decomposition mechanism and kinetics was achieved.
• The findings provide valuable data for future research and applications of transient thermal expansion cracking agents.