采用聚合物热解化学气相沉积(PP-CVD)法,通过聚乙二醇(PEG)的原位热解提供碳源、柠檬酸(CA)和硝酸钴反应产生催化剂纳米粒子,在微纳米级的片状铝粉基底上原位生长碳纳米管(CNTs)。通过实验和反应动力学建模研究了PP-CVD反应机理,揭示了PEG热解气相成分和催化剂纳米粒子表面气-固反应对CNTs生长速率的影响规律。CO初始分压和反应温度提高,CNTs生长速率提高;H2初始分压和催化剂密度提高,CNTs生长速率降低。模型预测的CNTs平均长度随反应温度和反应时间的变化趋势符合实验结果。因此,本研究为进一步优化CNTs/铝复合粉末制备工艺提供了新的理论依据。 Carbon source was prepared by in-situ pyrolysis of polyethylene glycol (PEG) using polymer pyrolysis chemical vapor deposition (PP-CVD) method. Citric acid (CA) reacted with cobalt nitrate to produce catalyst nanoparticles. Carbon nanotubes (CNTs) were grown in situ on flaky aluminum powder substrates. The mechanism of PP-CVD reaction was studied through experimental and reaction kinetic modeling. The influence of vapor pyrolysis gas phase composition and surface gas-solid reaction on the growth rate of CNTs was revealed. The initial partial pressure of CO and reaction temperature increased, while the growth rate of CNTs increased. The initial partial pressure of H2 and catalyst density increased, while the growth rate of CNTs decreased. The model predicts that the average length of CNTs changes with the reaction temperature and reaction time, which accords with the experimental results. Therefore, this study provides a new theoretical basis for further optimization of CNTs / aluminum composite powder preparation process.