Injection molding and injection compression molding of ultra-high molecular weight polyethylene: Minimized thermal degradation and delamination layer formation

Galip Yilmaz, Thomas Ellingham, Lih Sheng Turng*

*Corresponding author for this work

Research output: Contribution to conferenceConference Paperpeer-review

Abstract

Ultra-high molecular weight polyethylene (UHMWPE) in powder form was processed using injection molding (IM) with different cavity thicknesses and injection-compression molding (ICM). Tensile tests and impact tests showed that the ICM samples were superior to those of IM. Increased cavity thickness and ICM were helpful for improving the mechanical properties due to effective packing of the material. A delamination skin layer (around 300 µm thick and independent of cavity thickness) was formed on all IM sample surfaces while it was absent in the ICM samples, suggesting two different flow behaviors between IM and ICM during the packing phase.

Original languageEnglish
StatePublished - 2019
Externally publishedYes
Event77th Annual Technical Conference of the Society of Plastics Engineers, ANTEC 2019 - Detroit, United States
Duration: 18 03 201921 03 2019

Conference

Conference77th Annual Technical Conference of the Society of Plastics Engineers, ANTEC 2019
Country/TerritoryUnited States
CityDetroit
Period18/03/1921/03/19

Bibliographical note

Publisher Copyright:
© 2019 Society of Plastics Engineers. All rights reserved.

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