A Study on Shrinkage and Warpage of Rotational Moulded Polyethylene

Luis Costa; Maria Clara Cramez; A.J. Pontes

doi:10.4028/www.scientific.net/MSF.730-732.957

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HomeMaterials Science ForumMaterials Science Forum Vols. 730-732A Study on Shrinkage and Warpage of Rotational...

A Study on Shrinkage and Warpage of Rotational Moulded Polyethylene

Abstract:

Warpage and poor dimensional stability of rotomoulded products are two of the main obstacles to the use of this technique in the production of engineering parts. The knowledge of the effect of the processing conditions on the shrinkage of rotomoulded parts will allow overcoming some of the restrictions of this process. In the present work the influence of the processing conditions on the development of shrinkage and warpage of rotomoulded parts was studied. The moulding of the parts was performed using a rotational moulding machine build at the University of Minho. The shrinkage and the warpage of the moulded parts were assessed using 3D MMC (3D measuring Machine Control) equipment, and understanding the microstructural development.

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Materials Science Forum (Volumes 730-732)

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957-962

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.730-732.957

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Online since:

November 2012

Authors:

Luis Costa, Maria Clara Cramez, A.J. Pontes

Keywords:

Polyethylene, Rotational Moulding, Shrinkage, Warpage

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References

[1] Crawford R. J. – Shrinkage, Warpage and Residual Stresses in Rotational Moulding -Causes and Cures. Lecture, Rotational Moulding Seminar, Universidade do Minho, Guimarães, 9 – 10 September 2004.

Google Scholar

[2] Xu H.; Bellehumeur C.T. - Thermal Residual Stress Development for Semi-Crystalline Polymers in Rotational Molding. Polym. Eng. Sci. Feb, 2008.

DOI: 10.1002/pen.20887

Google Scholar

[3] Liu S. J.; Ho C.Y. - An Experimental Investigation of the Warpages in Rotationally Molded Parts. Journal of Reinforced Plastics and Composites, Vol. 19, No. 12, 992-1002 (2000).

DOI: 10.1106/xmxh-c1pg-91r8-m1gx

Google Scholar

[4] Bawiskar S.; White J. L. - Comparative Study of Warpage, Global Shrinkage, Residual Stresses, And Mechanical Behavior of Rotationally Molded Parts Produced From Different Polymers. Polym. Eng. Sci., 34 (1994) p.815.

DOI: 10.1002/pen.760341006

Google Scholar

[5] Viana J. C.; Cunha A. M.; Billon N. – The effect of the skin thickness and spherulites size on the mechanical properties of injection mouldings. Journal of Materials Science 36 (2001).

Google Scholar