Process for manufacturing a cellular carbon body
Abstract
Abstract A RIGID CARBON FOAM IS PREPARED BY ADMIXING FURFURYL ALCOHOL WHICH HAS BEEN PARTIALLY POLYMERIZED SO AS TO INCLUDE LESS THAN ABOUT 12 PERCENT FREE OR UNREACTED FURFURYL ALCOHOL WITH A FOAMING AGENT SUCH AS A TWO-COMPONENT POLYURETHANE SYSTEM FOR PRODUCING A CELLULAR MASS. THIS MASS IS THEN CURED AND SUBSEQUENTLY CARBONIZED AT A TEMPERATURE OF ABOUT 1000*C. TO 2500*C. TO PROVIDE A PRODUCT OF ESSENTIALLY PURE CARBON THAT IS CHARACTERIZED BY ITS CELLULAR STRUCTURE, DIMENSIONAL STABILITY IN ENVIRONMENTS OF CHANGING HUMIDITY, A DENSITY IN A RANGE OF ABOUT 0.02 TO 0.80 GRAM PER CUBIC CENTIMETER, AND A COMPRESSIVE STRENGTH WHICH MAY BE UP TO ABOUT 10,000 POUNDS PER SQUARE INCH. THE DENSITY CAN BE INCREASED UP TO ABOUT 1.0 GRAM PER CUBIC CENTIMETER WITH THE ADDITION OF ABOUT 15 TO 20 WEIGHT PERCENT GRAPHITE FLOUR.
Inventors
- 👤 Arthur F Sands
- 👤 Michael E Scrivner
Bibliographic Details
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