Replication of micro structured surface by injection moulding of PEEK

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Abstract

A micro-structured Ni insert was investigated for PEEK injection moulding. The micro features are circular holes 4 μm in diameter and 2 μm deep, with a 2 μm edge-to-edge distance. 6000 moulding cycles was operated. Half of the insert was coated by 200nm CrN. PEEK parts produced by the coated side and non-coated side were compared. Coating thickness was measured at intervals of production and employed to characterize the coating wear. Pillars geometry at fixed locations on PEEK parts was studied by SEM. EDS was conducted on the PEEK parts in order to study the Ni and Ag contamination. The results show the studied coating has a very low wear, and no Ni or Ag contamination on PEEK was detected for both parts produced by coated side and uncoated side. Coating improved demolding by reducing small indentations on pillars. The method to apply micro structured Ni plate on 3D parts injection moulding is proposed.
Original languageEnglish
Publication date2014
Publication statusPublished - 2014
EventEuspen Special Interest Group Meeting - Structured and Freeform Surfaces - Padova, Italy
Duration: 19 Nov 201420 Nov 2014

Conference

ConferenceEuspen Special Interest Group Meeting - Structured and Freeform Surfaces
Country/TerritoryItaly
CityPadova
Period19/11/201420/11/2014

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