Micro-graphite enhanced extrusion foaming of PET resin

Feng Chen, Zhi Yu Min, Eusebio Cabrera, Jose Castro, Ly James Lee*

*此作品的通信作者

研究成果: Conference contribution同行評審

摘要

Extrusion foaming of neat and recycled polyethylene terephthalate (PET) resins are difficult due to their high melting temperature and low melt strength. Chemical crosslinking modification of the PET resins is the most widely used method to solve this problem. However, the modified resins are expensive and difficult to be re-used. In this work, micro-graphite or nanoclay particulates were added to PET to adjust its melt viscosity and strength and to serve as a nucleation agent to facilitate cell growth during extrusion. Micro-graphite is an excellent infrared attenuation agent (IAA) that may provide enhanced thermal insulation to PET foams. Using our small lab extruder, the foamed micro-graphite/PET composite extrudates could reach a low density of 0.21 g/cm3, close to that achieved by chemical crosslinking modified PET resins, using injected hydrofluorocarbon (HFC) as a blowing agent in extrusion. Properties of the PET foam including density, cell size, and crystallinity depend on particulate type and processing conditions.

原文English
主出版物標題75th Annual Technical Conference and Exhibition of the Society of Plastics Engineers, SPE ANTEC Anaheim 2017
發行者Society of Plastics Engineers
頁面2502-2505
頁數4
ISBN(列印)978-0-692-88309-9
出版狀態Published - 2017
事件75th Annual Technical Conference and Exhibition of the Society of Plastics Engineers, SPE ANTEC Anaheim 2017 - Anaheim, United States
持續時間: 8 5月 201710 5月 2017

出版系列

名字Annual Technical Conference - ANTEC, Conference Proceedings
2017-May

Conference

Conference75th Annual Technical Conference and Exhibition of the Society of Plastics Engineers, SPE ANTEC Anaheim 2017
國家/地區United States
城市Anaheim
期間8/05/1710/05/17

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