Abstract
Irradiation cross-linked polyethylene (PEX) and irradiation cross-linked polyethylene with carbon black filler (CB-PEX) are two types of scraps, generated in electric cable production. Their pyrolysis is studied in this work using instrumental TG\DSC\FTIR techniques and kinetic analysis. The experiments are performed at a constant heating rate of 10 °C/min in nitrogen flow at atmospheric pressure. It is found that the main pyrolysis stage is in the temperature range of 395–503 °C for PEX, and in range of 408–515 °C for CB-PEX. In the main pyrolysis stage, CB-PEX requires more external heat than PEX does. Olefins are the major products of pyrolysis for both materials, but they are quite different in their composition and molecular weight distribution. PEX can be converted almost quantitatively into volatile compounds. CB-PEX has a stronger coking tendency, as well as a larger residue composed of carbon black.
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Acknowledgments
The Project was supported by the National Basic Research Program (973 Program) of China (No. 2011CB201500), the Research Project of environmental protection commonweal industry (201209023-4), National High Technology Research and Development Program of China (863 Program, 2012AA063505), Zhejiang University President Special Fund (585100-172210331), the Program of Introducing Talents of Discipline to University (B08026). Special thanks go to Prof. Toshiaki Yoshioka and Dr. G. Grause (Tohoku University) for suggestions and advice.
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Du, Y., Jiang, X., Lv, G. et al. TG-DSC and FTIR study on pyrolysis of irradiation cross-linked polyethylene. J Mater Cycles Waste Manag 19, 1400–1404 (2017). https://doi.org/10.1007/s10163-016-0530-z
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DOI: https://doi.org/10.1007/s10163-016-0530-z