| abstract |
A carbon-based composite is made by the steps of: 1) impregnating a fibrous material with a phthalonitrile thermoset polymer precursor; 2) curing the product of step 1) to form a fiber-reinforced thermoset polymer; and 3) pyrolyzing the product of step 2) to form the carbon-based composite. The carbon-based composite may be made with only one cycle of the steps 1), 2), and 3). |