Assessment of the Shrinkage and Ejection Forces of Reinforced Polypropylene Based on Nanoclays and Short Glass Fibre

Mauro C.R. Garcia; Aurelio C.S. Netto; A.J. Pontes

doi:10.4028/www.scientific.net/MSF.730-732.969

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HomeMaterials Science ForumMaterials Science Forum Vols. 730-732Assessment of the Shrinkage and Ejection Forces of...

Assessment of the Shrinkage and Ejection Forces of Reinforced Polypropylene Based on Nanoclays and Short Glass Fibre

Abstract:

In this study the influence of nanoclay and glass fibre in the shrinkage and ejection forces in polypropylene matrix in tubular parts moulded by injection moulding were analysed. An instrumented mould was used to measure the part surface temperature and ejection forces in tubular parts. The materials used were a polypropylene homopolymer Domolen 1100L nanoclay for polyolefin nanocomposites P-802 Nanomax in percentages of 2%, 6% and 10% and a polypropylene homopolymer with content of 10% of glass fibre Domolen P1-013-V10-N and 30% of glass fibre Domolen P1-102-V30-N with 2% of nanoclay. The shrinkage and ejection forces were analysed. The results show that the incorporation of nanoclays decreases the shrinkage and ejection forces whereas glass fibre decreases the shrinkage and increase ejection forces due to the increase of the elastic modulus. The nanoclays decrease the ejection force when compared with glass fibre and pure PP. The effects of nanoclays are less pronounced than those of glass fibre. The effect of the mould temperatures on the ejection forces in the mouldings produced with the mentioned materials were also analysed. The ejection force decreases with the increase of the temperature of the mould.

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Periodical:

Materials Science Forum (Volumes 730-732)

Pages:

969-974

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.730-732.969

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Online since:

November 2012

Authors:

Mauro C.R. Garcia, Aurelio C.S. Netto, A.J. Pontes

Keywords:

Ejection Force, Nanoclay, Short Glass Fibre, Shrinkage

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References

[1] D. R. Paul, L. M. Robeson, R.A., Polymer nanotechnology: Nanocomposites, Polymer. 49 (2008) 3187-3304.

DOI: 10.1016/j.polymer.2008.04.017

Google Scholar

[2] J. Móczó, B. Pukánszky, Polymer micro and nanocomposites: Structure, interactions, properties, J. Industrial and Eng. Chemistry. 14 (2008) 535-563.

DOI: 10.1016/j.jiec.2008.06.011

Google Scholar

[3] Y. Termonia, Structure-property relationships in nanocomposites, Polymer. 48 (2007) 6948-6954.

DOI: 10.1016/j.polymer.2007.09.025

Google Scholar

[4] K. M. B. Jansen, D. J. Van Dijk, M. J. A. Freriksen, Shrinkage anisotropy in fibre reinforced injection molded products, Polymer Composites. 19 (1998) 325-334.

DOI: 10.1002/pc.10105

Google Scholar

[5] G. Titomanlio, K. M.B. Jansen, In-mold shrinkage and stress prediction in injection molding, Polymer Eng. and Science. 36 (1996) 2041-2049.

DOI: 10.1002/pen.10599

Google Scholar

[6] K. M. B. Jansen, D. J. Van Dijk, M. H. Husselman, Effect of processing conditions on shrinkage in injection molding, Polymer Eng. and Science. 38 (1998) 838-846.

DOI: 10.1002/pen.10249

Google Scholar

[7] A. J. Pontes, A. M. Brito, A. S. Pouzada, Assessment of the ejection force in tubular injection moldings, J. Injection Molding Tech. 6 (2002) 343-352.

Google Scholar

[8] K. M. B. Jansen, G. Titomanlio, Effect of pressure history on shrinkage and residual stresses – injection molding with constrained shrinkage, Polymer Eng. and Science. 36 (1996) 2029-2040.

DOI: 10.1002/pen.10598

Google Scholar

[9] M. R. Kamal, A. T. Mutel, L. A. Utracki, Elongational behavior of short glass fibre reinforced polypropylene melts, Polymer Composites. 5 (1984) 289-298.

DOI: 10.1002/pc.750050408

Google Scholar