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Link to this page: | http://core.materials.ac.uk/search/detail.php?id=1614 |
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Resource type: | Image |
Description: | If a gas is injected into a liquid it forms a cellular foam structure. When a thermoset prepolymer of low viscosity is foamed, the polymer can drain from the cell walls (driven by surface tension) before it sets at the cell edges, leaving an open-celled foam. The cell edges have three concave sides. The average co-ordination number for the nodes (where struts meet) is four, giving tetrahedral junctions. The deformation behaviour of the foam was observed by X-ray microtomography at the ESRF in Grenoble. X-ray tomography overcomes the limitations of MRI in terms of contrast, and those of confocal optical microscopy in terms of depth of field. |
Keywords: | cell • composite material • foam • polymer • polymer composite foam • polyurethane (PU) • thermoset • X-ray tomography |
Categories: | Science approaches > Microstructure Materials > Polymers & elastomers > Elastomers > Polyurethane (eIPU) Product Forms > Bulk > Foam Testing, analysis & experimentation > Metallography Scale > Micro |
Created by: |
Dr James A Elliott, Department of Materials Science and Metallurgy, University of Cambridge DoITPoMS, University of Cambridge |
Published by: | DoITPoMS, University of Cambridge | License: | This resource is released under the Creative Commons Attribution Non-Commercial Share Alike license (2.0 UK: England & Wales). View the full legal code here. |
Date created: | 03 October 2002 |
Date added: | 21 August 2009 |
Package: | |
Resource ID: | 1614 |