METHODS FOR RECOVERING CARBON FIBER FROM CARBON-FIBER-REINFORCED POLYMER (CFRP) COMPOSITES

摘要

Method for recovering carbon fibers from carbon fiber reinforced polymer composites is provided. The recovered carbon fibers can be separable and can be substantially free of thermosetting resins. Compositions comprising said recovered carbon fibers are also provided.

主权项

1. A method of recovering carbon fibers from fiber reinforced composite, the method comprising:
providing a fiber-reinforced composite comprising carbon fibers and a thermosetting resin; contacting the fiber-reinforced composite with a first organic solvent including an alcohol to form carbon fiber bundles from the fiber-reinforced composite; after contacting the composite with the first organic solvent, contacting the carbon fiber bundles with an acid solution to form acid-treated carbon fibers; and contacting the acid-treated carbon fibers with a second organic solvent.