Pyrolysis Kinetics of Polybutadiene Rubber and Styrene-Butadiene Rubber

• Main Authors: Lin,Jyh-Ping, 林致平
• Other Authors: Chang,Ching-Yuan
• Format: Others
• Language: zh-TW
• Published: 1996
• Online Access: http://ndltd.ncl.edu.tw/handle/53160849297528988537

博士 === 國立臺灣大學 === 環境工程研究所 === 84 === Rubber samples, including polybutadiene rubber (BR), styrene- butadiene rubber (SBR), mixture of BR/SBR and tire tread, were pyrolyzed under nitrogen atmosphere for studying the phenomena of pyrolysis reaction, respectively. A temperature- programmed dynamic thermogravimetric analysis (TGA) was used for meeting the requirement of experimental purposes. Simplified reaction schemes were also proposed for describing the mass-loss behavior of rubber samples, and good agreements between the results of model prediction and those of experiments were obtained. The results of this study may be of great use for the design of rubber waste pyrolysis processes. The mass-loss phenomena for pyrolysis of BR may be attributed to two different reactions deduced from the mass-loss curves of experimental results. The mass ratio of the two reactions was 0.195/0.805. The averaged R-square value between experimental results and model prediction was 0.9903. The mass-loss behavior of SBR pyrolysis may be attributed to three reactions identified from the mass-loss curves of experimental results. The averaged R-square value between experimental results and model prediction was 0.9952. As for mixtures of BR/SBR, the mass-loss rates of pyrolysis reaction may be determined by combination of the corresponding rates for each components. The averaged R-square value between experimental results and model prediction was 0.9831. The mass-loss history for pyrolysis of tire tread may be attributed to three different reactions identified from the mass-loss curves of experimental results. The averaged R-square value between experimental results and model prediction was 0.9834.