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| Properties: |
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Preform: Deformation,
Permeability |
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Resin: Viscosity |
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Resin Cure: Degree of
Cure, Cure Kinetics |
| Permeability
Characterization |
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Resin flow through reinforcement
plays a crucial role in manufacturing processes, and can be assumed
as a flow through porous medium; |
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Resin flow can be described
by Darcy's law; |
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Permeability and viscosity
are used in mold fill analysis. |
| Types
of Reinforcement |
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Fabrics
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Mate
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| Fluid
Flow Setup for Measurement of Permeability |
| New
Gas Flow Method For Determination of Preform Permeability |
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A new method using gas
flow was developed for measuring permeability in reinforcement preforms
used in liquid injection molding. |
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The theoretical foundation
of the method was established. |
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The method was tested
experimentally and verified by comparison with results from the
conventional liquid flow method. |
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The gas flow method
has the advantages that it is not hindered by edge effects and mold
deformation and can be used directly in the real mold prior to resin
injection. |
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