To investigate the mechanical properties of PTFE/Al (polytetrafluoroethylene/aluminum) reactive materials and temperature effects on their impact ignition behavior, eight PTFE/Al reactive material specimens were fabricated through controlled sintering conditions. Stress-strain curves of eight samples at varying temperatures were obtained by using a universal testing machine, while impact ignition thresholds of eight samples under corresponding temperatures were determined through drop-weight experiments. Experimental results demonstrated that sintering duration significantly influenced the elastic modulus of PTFE/Al composites, with elevated temperatures inducing material softening. At high-temperature conditions, specimens sintered for 40 min exhibited enhanced yield strength and demonstrated higher reactivity under drop-weight loading. Further analysis revealed a linear negative correlation between material strength and impact ignition thresholds under isothermal conditions, with the slope of this linear relationship exhibiting exponential decay as temperature increased. The findings of this study provide a significant theoretical foundation for the performance optimization and engineering applications of PTFE/Al reactive materials.