Insights into the slip flow phenomena encountered during in-mold coating (IMC) of plastic parts
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Emily Cortright
,
Elliott Straus
Abstract
Researchers have been using DNA for flow visualization studies owing to its ability to be tagged by a fluorescent dye. We used DNA to study the apparent slip phenomena encountered in the in-mold coating (IMC) flow through thin channels. IMC can be basically considered a carbon black suspension. IMC of sheet molding (SMC) compound is a well-established and environmentally friendly processing technique used by many industries to improve surface quality of parts to meet automotive standards. It is recently being evaluated for use with thermoplastic injection molded parts to obtain similar surface quality improvements and eliminate the need for priming and/or painting. The flow geometry gaps encountered during the coating process, are mostly at the micro-scale. Previous work in our group has shown that the flow can be represented using continuous mechanics approaches with the incorporation of slip at the wall. In this paper, we used DNA, as a model suspension, to make further insights into the nature of the slip flow phenomena encountered during the coating process.
©2011 by Walter de Gruyter Berlin New York
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Artikel in diesem Heft
- Publisher’s Note
- A new start for Journal of Polymer Engineering
- News
- Implementing a new manuscript submission system
- Original Articles
- Model for the hydrodynamic dispersion of agglomerates incorporating thermoresponsive additives
- Preparation and properties of PLA/long alkyl chain modified multi-walled carbon nanotubes nanocomposites
- Insights into the slip flow phenomena encountered during in-mold coating (IMC) of plastic parts
- Physical properties of biaxially oriented PA6 film for simultaneous stretching and sequential processing
- Synthesis and solution behaviors of star hydrophobically modified acrylamide copolymers
- Melt temperature learning control of injection molding process based on CMAC neural network
- Numerical analysis of mixing performance of mixing section in pin-barrel single-screw extruder
- New process technology for high volume production of composites
