Low moisture absorption syntactic foam
AssigneeThe Dexter Corporation
InventorsRaymond S. Wong, Clarence Lynn Mahoney
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Abstract
A syntactic foam in the form of a thin uniform sheet that possesses enhanced moisture resistance, which comprises a composite filled with hollow microspheres such as glass in a polymer matrix resin such as an epoxy resin where the resin encapsulates the microspheres and the filled composite at weight equilibrium has less than 15% of the available internal volume of the microspheres occupied by liquid water as determined by the LMA test. The process of making the sheet and composites incorporating the sheet is described.
Claims9
A syntactic foam comprising a uniformly thin sheet with a thickness of about 0.007 to about 0.125 inch that does not vary in thickness by more than about .+-.5%, which sheet is a composite filled with hollow microspheres in a polymer matrix resin where the resin encapsulates the microspheres and the filled composite at weight equilibrium has less than 15% of the available internal volume of the microspheres occupied by liquid water whereby the composite possesses enhanced moisture resistance.
Dependencies are inferred from the claim text.