LIANG Xuan-xuan,ZHANG Xiao-ping(College of Environmental Sciences and Engingeering,South China University of Technology,Guangzhou 510006,Guangdong Province,China)
(College of Environmental Sciences and Engingeering,South China University of Technology,Guangzhou 510006,Guangdong Province,China
Abstract：
The pyrolysis characteristics of polytetrafluoroethylene(PTFE) were studied in the atmosphere of nitrogen by thermogravimetric analysis.The results showed that the pyrolysis of samples has similar TG and DTG curves with the different heating rates.The pyrolysis of PTFE is an endothermic reaction.There is only one weight loss step including a weight loss peak in the entire process of the pyrolysis.The detection of gas products was performed by the coupled simultaneous Fourier transform infared spectroscopy.The experimental results showed that the principal product of the pyrolysis is tetrafluoroethylene.In addition,the element composition of the pyrolysis remnants was analyzed by electron probe.The analytical results indicated that the metal content of the remnants is close to that of ordinary stainless steel.
2008, Vol. 25 
