Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Evaluating the Injection Moulding of Plastic Parts using In Situ Time-Resolved Small-Angle X-Ray Scattering Techniques

Version 1 : Received: 3 September 2022 / Approved: 5 September 2022 / Online: 5 September 2022 (10:01:27 CEST)

How to cite: Costa, A.A.; Gameiro, F.; Potêncio, A.; Silva, D.P.D.; Carreira, P.; Martinez, J.C.; Pascoal-Faria, P.; Mateus, A.; Mitchell, G.R. Evaluating the Injection Moulding of Plastic Parts using In Situ Time-Resolved Small-Angle X-Ray Scattering Techniques. Preprints 2022, 2022090056. https://doi.org/10.20944/preprints202209.0056.v1 Costa, A.A.; Gameiro, F.; Potêncio, A.; Silva, D.P.D.; Carreira, P.; Martinez, J.C.; Pascoal-Faria, P.; Mateus, A.; Mitchell, G.R. Evaluating the Injection Moulding of Plastic Parts using In Situ Time-Resolved Small-Angle X-Ray Scattering Techniques. Preprints 2022, 2022090056. https://doi.org/10.20944/preprints202209.0056.v1

Abstract

We describe the design and fabrication of an industrial injection moulding system which can be mounted and used on the NCD-SWEET Small-angle X-Ray Scattering Beamline at ALBA. We show how highly useful time-resolved data can be obtained using this system. We are able to evaluate the fraction of material in the mould cavity and identify the first material to solidify and how this varies with the injection tem-perature. The design follows current industrial practice and provides opportunities to collect time-resolved data at several points within the mould cavity so we can build up a 4D perspective of the morphology and its temporal development. The quantitative data obtained will prove invaluable for the optimisation of the next generation of in-jection moulding techniques. This preliminary work used results from the injection moulding of a general purpose isotactic polypropylene.

Keywords

Injection moulding; Crystallisation; Flow; Small-angle X-ray Scattering; isotactic polypropylene

Subject

Chemistry and Materials Science, Polymers and Plastics

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