Abstract
Differential thermal analysis (DTA) has been used to study the behaviors of several furfuryl alcohol resin binders, when subjected to a variety of experimental conditions similar to those encountered during graphite fabrication. Three experimental resin types were studied: a maleic anhydride-polymerized furfuryl alcohol resin, a γ alumina-polymerized furfuryl alcohol resin and a furfuryl alcohol-formaldehyde copolymer resin, each at several degrees of polymerization. In addition, a commercial furfuryl alcohol resin (Varcum resin) was studied. Several concentrations each of four curing catalyst types, a number of particle size fractions of two graphite filler types, four sample atmospheric environments, and two potential crosslinking agents were examined with DTA. The effects of each of the experimental variables were noted, and from this, an evaluation of the potential usefulness of the DTA method as a means of studying furfuryl alcohol binder resins was made. The study was conducted with sufficient detail to allow a number of conclusions to be made of direct application to graphite fabrication studies.
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