论文部分内容阅读
以硝酸铜、无水乙醇、1,2-环氧丙烷和纳米铝粉为原料,在超声振荡条件下,采用溶胶-凝胶法制备了纳米复合含能材料——超级铝热剂Al/CuO的前驱体.利用热重-差示扫描量热-傅里叶变换红外-质谱(TG-DSC-FTIR-MS)联用技术,研究了纳米Al/CuO溶胶-凝胶前驱体的热行为和分解过程及机理.利用不同升温速率下的TG-DTG分析,研究了纳米超级铝热剂Al/CuO的溶胶-凝胶前驱体的热分解反应机理,采用了6种动力学分析方法进行动力学参数计算,得到前驱体分解反应的表观活化能、反应级数、频率因子等动力学参数,纳米Al/CuO前驱体分解反应的动力学方程为:dα/dt=1014.0×4α3/4exp(-2.0×104/T).
Using copper nitrate, anhydrous ethanol, 1,2-propylene oxide and nano-aluminum powder as raw materials, the nanocomposites containing superconducting aluminum and CuO were prepared by sol-gel method under ultrasonic vibration The thermal behavior of nano-Al / CuO sol-gel precursors was investigated by TG-DSC-FTIR spectroscopy and thermogravimetry coupled with differential scanning calorimetry-Fourier transform infrared- Decomposition process and mechanism.Using TG-DTG analysis at different heating rates, the thermal decomposition reaction mechanism of the sol-gel precursors of nano-superluminum Al / CuO was studied. Six kinetic methods were used to analyze the kinetics The kinetic parameters such as apparent activation energy, reaction order and frequency factor of precursor decomposition reaction were obtained. The kinetic equation of decomposition reaction of nano Al / CuO precursors was: dα / dt = 1014.0 × 4α3 / 4exp (- 2.0 × 10 4 / T).