Goodship, V., Kirwan, Kerry, Goodhead, T. C. and Smith, Gordon. (2003) Interfacial instabilities in multimaterial co-injection mouldings - Part 2 - Interfacial mixing in transparent mouldings. Plastics, Rubber and Composites, Vol.32 (No.3). pp. 98-103. ISSN 1465-8011

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Abstract

Previous research in co-injection moulding has produced viscosity ratio guidelines for skin and core components, which must be followed if good core distribution is to be achieved. However, by examining two phase systems of PMMA-PC, which fall within the recommended viscosity range, this work shows that viscosity matching of materials is not a sufficient requirement for interfacial stability. The transparency of the materials allows areas of interfacial mixing to show up as streaks in the mouldings, so that factors affecting stability can be determined. One system is found to be more stable than the others. Explanations for such effects are given by consideration of interfacial mixing, viscosity, tooling geometry, injection speeds, interfacial stresses and shear in multilayered mouldings.

Item Type:	Journal Article
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) Q Science > QD Chemistry
Divisions:	Faculty of Science > WMG (Formerly the Warwick Manufacturing Group)
Journal or Publication Title:	Plastics, Rubber and Composites
Publisher:	Maney Publishing
ISSN:	1465-8011
Date:	2003
Volume:	Vol.32
Number:	No.3
Number of Pages:	6
Page Range:	pp. 98-103
Identification Number:	10.1179/146580103225001345
Status:	Peer Reviewed
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/9731

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