SHAPE MEMORY POLYMER (SMP) FLOW MEDIA FOR RESIN INFUSION
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United States of America Patent
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Issued Date -
Jun 9, 2016
app pub date -
Dec 8, 2014
filing date -
Dec 8, 2014
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Abstract
A system and method of vacuum assisted resin transfer molding (VARTM) using a reconfigurable material, such as shape memory polymer (SMP), for a caul sheet or a forming tool. The reconfigurable material may have a rough or non-smooth, deformed configuration to serve as a flow media during resin transfer, but may be triggered to return to a smooth memory shape at composite cure temperatures at least high enough to place the reconfigurable material into a malleable state. Thus, a surface of the composite material facing the reconfigurable material will have a substantially smooth finish following curing thereof. The rough or non-smooth deformed configuration may be created by embossing or otherwise forming various patterns into the reconfigurable material in the malleable state, and holding this pattern while triggering the reconfigurable material back to a rigid state for use during resin transfer.
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