期刊
JOURNAL OF APPLIED POLYMER SCIENCE
卷 132, 期 6, 页码 -出版社
WILEY
DOI: 10.1002/app.41442
关键词
crosslinking; degradation; polyolefins; thermosets; viscosity and viscoelasticity
资金
- R&D Center for Valuable Recycling - Ministry of Environment [GT-11-C-01-240-0]
- Korea Institute of Science and Technology
- Korea Environmental Industry & Technology Institute (KEITI) [ARQ201205051005] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- Ministry of Science, ICT & Future Planning, Republic of Korea [2E25371] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This work demonstrates that extrusion process can be used as a continuous reactor for the recycling of crosslinked polyethylene (XLPE) via supercritical methanol decrosslinking reaction. The multistage single screw extruder (L/D = 36, D = 40 mm) with methanol injection pump was customized for the continuous supercritical decrosslinking reaction. Reaction temperature was ranged from 360 degrees C to 390 degrees C. The amount of methanol was varied from 0 to 7 mL/min. The extruder provided the crosslinked polymers with the supercritical conditions of methanol during continuous process. The gel content of XLPE decreased with the increase in the reaction temperature and methanol content. Although XLPE experienced supercritical methanol for less than 2 min retention time in the continuous supercritical extruder, it was completely decrosslinked above 390 degrees C at the methanol feeding rate of 7 mL/min. (C) 2014 Wiley Periodicals, Inc.
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