公开(公告)号：EP1973844A2

公开(公告)日：2008-10-01

申请号：EP06848781.8

申请日：2006-12-22

申请人： GrafTech International Holdings Inc.

发明人： MILLER, Douglas J., ,  LEWIS, Irwin C., ,  SHAO, Richard L., ,  YAZICI, Mehmet Suha,

IPC分类号： C01B31/00

CPC分类号： C08G8/10 ,  C04B35/83 ,  C04B38/0022 ,  C04B2111/00431 ,  C04B2111/00853 ,  C04B2111/00939 ,  C04B2111/2046 ,  C04B2111/52 ,  C04B2235/48 ,  C04B2235/483 ,  C04B2235/5248 ,  C04B2235/787 ,  C08J9/0085 ,  C08J2203/06 ,  C08J2361/06 ,  Y10S521/919 ,  Y10T428/30 ,  C04B38/0064 ,  C04B38/0074 ,  C04B38/08

摘要： A reinforced carbon foam material is formed from carbon fibers incorporated within a carbon foam's structure. First, carbon fiber bundles are combined with a liquid resol resin. The carbon fiber bundles separate into individual carbon fiber filaments and disperse throughout the liquid resol resin. Second, the carbon fiber resin mixture is foamed thus fixing the carbon fibers in a permanent spatial arrangement within the phenolic foam. The foam is then carbonized to create a carbon fiber reinforced foam with improved graphitic characteristics as well as increased strength. Optionally, various additives can be introduced simultaneously with the addition of the carbon fiber bundles into the liquid resol, which can improve the graphitic nature of the final carbon foam material and/or increase the foam's resistance to oxidation.

公开(公告)号：EP1966272A2

公开(公告)日：2008-09-10

申请号：EP06848847.7

申请日：2006-12-22

申请人： GrafTech International Holdings Inc.

发明人： MILLER, Douglas J., ,  LEWIS, Irwin C., ,  SHAO, Richard L., ,  PIRRO, Terrence A., ,  ADRIANOWYCZ, Orest L.,

IPC分类号： C08G63/00

CPC分类号： C04B41/5092 ,  C04B38/0032 ,  C04B41/5006 ,  C04B41/85 ,  C04B2111/00431 ,  C04B41/0072 ,  C04B41/4535 ,  C04B41/502 ,  C04B35/52 ,  C04B38/0054 ,  C04B38/0061 ,  C04B38/0074

摘要： A carbon foam material with an improved oxidation resistance is created by blending formaldehyde with phenol to form a reactive mixture, polymerizing the reactive mixture with a non-oxidation promoting basic catalyst to form a resin article, foaming the resin article to create phenolic foam, and carbonizing the phenolic foam to create the carbon foam with an increased oxidation resistance. Specifically, the oxidation resistant carbon foam has a sodium content of approximately 0%. This inventive foam may also contain one or more oxidization inhibitors to impede the oxidation of the carbon foam when the foam is exposed to an oxidizing environment.