Flow behaviour of rubber in capillary and injection moulding dies

Evan Mitsoulis; Markus Battisti; Andreas Neunhäuserer; Leonhard Perko; Walter Friesenbichler; Mahmoud Ansari; Savvas G. Hatzikiriakos

doi:10.1080/14658011.2017.1298207

Flow behaviour of rubber in capillary and injection moulding dies

Evan Mitsoulis, Markus Battisti, Andreas Neunhäuserer, Leonhard Perko, Walter Friesenbichler, Mahmoud Ansari, Savvas G. Hatzikiriakos

Montanuniversität

Research output: Contribution to journal › Article › Research › peer-review

8 Citations (Scopus)

Abstract

This study is concerned with the flow behaviour of a rubber compound in capillary and injection moulding dies in the temperature range of 80–120°C. The injection moulding die designs had a tapered angle ranging from 40° up to 150°. The rheological characterisation of the rubber compound in the capillary dies showed that rubber slips at the wall, and this was modelled with an appropriate slip law. The pressure drops in the system were measured for all tapered dies. Numerical simulations were then carried out with a purely viscous (Carreau) model and a multimode viscoelastic (K-BKZ) model. The results showed a good agreement with the experiments for both the capillary and the injection moulding dies, provided that slip is included in the simulations as determined experimentally.

Original language	English
Pages (from-to)	110-118
Number of pages	9
Journal	Plastics, rubber and composites
Volume	46.2017
Issue number	3
DOIs	https://doi.org/10.1080/14658011.2017.1298207
Publication status	Published - 5 Mar 2017

Keywords

Carreau and K-BKZ models
injection moulding dies
numerical simulation
Rubber capillary rheometry
slip at the wall

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10.1080/14658011.2017.1298207

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abstract = "This study is concerned with the flow behaviour of a rubber compound in capillary and injection moulding dies in the temperature range of 80–120°C. The injection moulding die designs had a tapered angle ranging from 40° up to 150°. The rheological characterisation of the rubber compound in the capillary dies showed that rubber slips at the wall, and this was modelled with an appropriate slip law. The pressure drops in the system were measured for all tapered dies. Numerical simulations were then carried out with a purely viscous (Carreau) model and a multimode viscoelastic (K-BKZ) model. The results showed a good agreement with the experiments for both the capillary and the injection moulding dies, provided that slip is included in the simulations as determined experimentally.",

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AU - Ansari, Mahmoud

AU - Hatzikiriakos, Savvas G.

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AB - This study is concerned with the flow behaviour of a rubber compound in capillary and injection moulding dies in the temperature range of 80–120°C. The injection moulding die designs had a tapered angle ranging from 40° up to 150°. The rheological characterisation of the rubber compound in the capillary dies showed that rubber slips at the wall, and this was modelled with an appropriate slip law. The pressure drops in the system were measured for all tapered dies. Numerical simulations were then carried out with a purely viscous (Carreau) model and a multimode viscoelastic (K-BKZ) model. The results showed a good agreement with the experiments for both the capillary and the injection moulding dies, provided that slip is included in the simulations as determined experimentally.

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Flow behaviour of rubber in capillary and injection moulding dies

Abstract

Keywords

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