Thermal degradation characteristics and products obtained after pyrolysis of specific poly

Thermal degradation characteristics and products obtained after pyrolysis of specific polymers found

in Waste Electrical and Electronic Equipment

Evangelia C.Vouvoudi;Aristea T.Rousi;Dimitris S.Achilias

【期刊名称】《中国高等学校学术文摘·环境科学与工程》 【年(卷),期】2017(011)005

【摘要】Modern societies strongly support the recycling practices over simple waste accumulation due to environmental harm caused.In the framework of sustainable recycling of plastics from WEEE,pyrolysis is proposed here as a means of obtaining secondary value-added products.The aim of this study was to investigate the thermal degradation and the products obtained after pyrolysis of specific polymers found in the plastic part of WEEE,using thermogravimetric analysis and a pyrolizer equipped with a GC/MS.Polymers studied include ABS,HIPS,PC and a blend having a composition similar to that appearing in WEEE.It was found that,PC shows greater heat endurance compared to the other polymers,whereas ABS depolymerizes in three-steps.The existence of several polymers in the blend results in synergistic effects which decrease the onset and final temperature of degradation.Moreover,the fragmentation occurred in the pyrolyzer,at certain

temperatures,resulted

on

in the

a

great

variety type,such

of as

compounds,depending polymer