초록 ▼

The graphitized composite article of the present invention is formed by embedding carbon fiber felt in a matrix of a carbon filler; a thermosetting resin and a solvent; curing the composite article; then, carbonizing and graphitizing the cured composite article to form the graphitized composite arti

The graphitized composite article of the present invention is formed by embedding carbon fiber felt in a matrix of a carbon filler; a thermosetting resin and a solvent; curing the composite article; then, carbonizing and graphitizing the cured composite article to form the graphitized composite article for use as a separator plate capable of substantially inhibiting mixing of hydrogen and oxygen and/or the loss of electrolyte within a fuel cell stack. The graphitized composite article may be a graphitized laminate.

대표청구항 ▼

[ We claim:] [1.] A graphitized composite article made by the method of:forming an uncured composite article having carbon fiber embedded within a matrix of a carbon filler, a thermosetting resin and a solvent;removing substantially all of the solvent from said uncured composite article;applying pre

[ We claim:] [1.] A graphitized composite article made by the method of:forming an uncured composite article having carbon fiber embedded within a matrix of a carbon filler, a thermosetting resin and a solvent;removing substantially all of the solvent from said uncured composite article;applying pressure and heat to said uncured composite article to produce a cured compressed composite article;heating said cured compressed composite article to a first temperature thereby producing a carbonized composite article,wherein the carbon fiber, the carbon filler and the resin are substantially carbonized; andheating the carbonized composite article to a second temperature higher than the first temperature, thereby producing a graphitized composite article; whereby the graphitized composite article is substantially impermeable to gases and liquids.