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Helthuis, Nick
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Publications (5/5 displayed)
- 2024Polymer-metal interactions and their effect on tool-ply friction of C/PEKK in meltcitations
- 2024Direct observation of the fracture behavior of the polyether ketone ketone (PEKK) spherulitescitations
- 2023Friction screw extrusion additive manufacturing of an Al-Mg-Si alloycitations
- 2023A Feasibility Study on Friction Screw Extrusion Additive Manufacturing of AA6060citations
- 2022The role of process induced polymer morphology on the fracture toughness of titanium-PEKK interfacescitations
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document
Polymer-metal interactions and their effect on tool-ply friction of C/PEKK in melt
Abstract
Excessive friction or adhesion between tool and surface ply can lead to processing defects during thermoplastic composite manufacturing. A previous study identified a notable increase in friction or adhesion between a mild steel tool surface and C/PEKK with prolonged dwell time at elevated temperature, a phenomenon that could not be explained by our current understanding. This work presents additional friction and differential scanning calorimetry experiments to demonstrate that the increased adhesion results from polymer-metal interactions that lead to polymer degradation and metal-polymer bonding. These findings underline the importance of tool material selection in both processing and characterization of tool-ply friction.