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Influence of part dimension on ageing of injection moulded thermoplastic materials: exemplary studies on amorphous polycarbonate

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Abstract

Injection moulding of polymer micro parts often affects the inner structure due to process conditions with reduced part dimensions. Consequently, ageing effects can increase with reduced part dimensions. This paper investigates the ageing effects in different scaled tensile bars, exemplarily injection moulded of polycarbonate. The results reveal during the here applied artificial ageing conditions the chemical ageing effects have less influence and primary physical ageing effects take place. A reduction of part dimensions leads to increasing impact of ageing effects for the here investigated polycarbonate.

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Acknowledgements

The author gratefully acknowledges the German Research Foundation (DFG) for funding the work in DR421/16-1. Special thanks also go to Prof. Dietmar Drummer and the Lehrstuhl für Kunststofftechnik of the University Erlangen-Nürnberg for supporting this work. The author also extends its gratitude to the industrial partners Arburg GmbH & Co. KG and Covestro AG for providing equipment and material.

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  1. Gaudlitz GmbH, Callenberger Straße 42, 96450, Coburg, Germany

    Steve Meister

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Meister, S. Influence of part dimension on ageing of injection moulded thermoplastic materials: exemplary studies on amorphous polycarbonate. Microsyst Technol 27, 2733–2743 (2021). https://doi.org/10.1007/s00542-020-05020-3

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