Preparation and properties of low density replica carbon foams
Low density foams are, used for a variety of applications, including catalytic supports, battery anodes, microporous membranes, and laser fusion targets. The technique for making replica carbon foams described in this paper has been previously reported and involves a process in which an inorganic substrate (sodium chloride) is infused with a carbonizable polymer. After carbonization, the substrate is removed by a leaching process and the wet foam is dried; the resultant foam is referred to as replica carbon. This paper describes improvements in the processing which result in a smaller pore size and improved foam homogeneity. The original substrate is the single most important factor affecting the resultant structure. Techniques to improve the uniformity of the substrate and the translation of substrate anomalies into the final product are described. In addition, correlations observed between the original particle size distribution of a variety of different salts as compared to the final pore size of the resultant foam are discussed.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 10175050
- Report Number(s):
- UCRL-JC-108836; CONF-920402-55; ON: DE92019573
- Resource Relation:
- Conference: 1992 Material Research Society (MRS) spring meeting,San Francisco, CA (United States),27 Apr - 2 May 1992; Other Information: PBD: Apr 1992
- Country of Publication:
- United States
- Language:
- English
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