摘要
使用激波管作为加热手段,利用其加热速率快的优点,突破了传统方法在加热速率上的限制,研究了酚醛树脂在1400~1700K温度范围内的热解动力学。主要碳氢产物是甲烷、乙烯、乙炔和苯。通过对反应扩散过程的分析,考察了扩散对热解过程的影响。结果表明,实验中酚醛树脂的反应扩散过程迅速达到稳态,扩散影响可以忽略,首次获得了酚醛树脂在芳环开环热解机制下的热解速率常数。
The pyrolysis kinetics of phenolic-formaldehyde resin was studied at the temperature range from 1400 to 1700K using a shock tube. Shock tube experiment can provide a rapid heating rate, which breaks through the limit of traditional heating rate. The major hydrocarbon products were identified as methane, ethene,aeetylene and benzne. The effect of diffusion on the pyrolysis process was investigated through analyz- ing the reaction-diffusion process. It was found that in this experiment the reaction-diffusion process got constant rapidly, and the effect of diffusion was neglectable. The pyrolysis rate constant of phenolic resin under the pyrolysis mechanism of aromatic framework cracking was obtained for the first time.
出处
《实验流体力学》
CAS
CSCD
北大核心
2008年第2期61-63,67,共4页
Journal of Experiments in Fluid Mechanics
关键词
热解动力学
酚醛树脂
高温
激波管
pyrolysis kinetics
phenolic resin
high temperature
shock tube
