Patent ID: 7578860
Filing Date: 2009-08-25
Classification: B32B,Y10T

Abstract:
1. A green carbon foam comprising a density ranging from about 0.1 g/cm 3 to about 0.8 g/cm 3 and a compressive strength below about 6000 psi manufactured by the process comprising: heating high volatile bituminous coal particles exhibiting a free swell index ranging from about 3.5 to about 5.0 at a range in the range of about 1° C./minute to about 20° C./minute to a temperature ranging from about 300° C. to about 700° C. in a pressure controlled reactor, under a pressurized non-oxidizing atmosphere having a pressure from about that of free flowing gas to about 500 psi; and controllably cooling said green carbon foam at a cooling rate of less than about 10° C./minute to a temperature of about 100° C.