Solid composites containing polymeric matrix with carbon fibers embedded therein
AssigneeUT-Battelle, LLC
InventorsFrederic Vautard, Soydan Ozcan, Felix Leonard Paulauskas
Life of this patent
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Abstract
A functionalized carbon fiber having covalently bound on its surface a partially cured epoxy or amine-containing sizing agent, wherein at least a portion of epoxide or amine groups in the sizing agent are available as uncrosslinked epoxide or amine groups, which corresponds to a curing degree of epoxide or amine groups of no more than about 0.6. Composites comprised of these functionalized carbon fibers embedded in a polymeric matrix are also described. Methods for producing the functionalized carbon fibers and composites thereof are also described.
Claims22
A solid composite in which carbon fibers are embedded in a polymeric matrix derived from an unsaturated precursor resin containing carbon-carbon double bonds, wherein said carbon fibers have covalently bonded on their surfaces a partially cured sizing agent comprised of an epoxy resin, wherein said epoxy resin is covalently attached to a linking group that contains an accessible unsaturated group capable of reacting with said carbon-carbon double bonds via a vinyl addition reaction, and at least a portion of epoxide groups in the sizing agent are available as uncrosslinked epoxide groups, which corresponds to a curing degree of epoxide groups of no more than about 0.6.
A solid composite in which carbon fibers are embedded in a polymeric matrix derived from an unsaturated precursor resin containing carbon-carbon double bonds, wherein said carbon fibers have covalently bonded on their surfaces a partially cured amine-containing sizing agent, wherein said amine-containing sizing agent is covalently attached to a linking group that contains an accessible unsaturated group capable of reacting with said carbon-carbon double bonds via a vinyl addition reaction, and at least a portion of amine groups in the sizing agent are available as uncrosslinked amine groups, which corresponds to a curing degree of amine groups of no more than about 0.6.
Dependencies are inferred from the claim text.