The effects of binder viscosity and molecular size distribution on the fabrication and physical properties of furfuryl alcohol resin bonded graphites

✍ Scribed by J.M. Dickinson; E.M Wewerka

• Publisher: Elsevier Science
• Year: 1970
• Tongue: English
• Weight: 818 KB
• Volume: 8
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(70)90066-7

✦ Synopsis

The viscosities and molecular size distributions of furfuryl alcohol resin binders are shown to have important influences on the fabrication and physical properties of graphites made from them. Increasing binder viscosity to about 2000 cp improves the physical properties of the graphite. Above this, graphite properties improve only slightly with further increases in resin viscosity, but fabrication difficulties increase. The monomer (the smallest resin molecule) is deleterious to graphite physical properties. In general, the medium-size molecules behave in a manner opposite to that of the monomer, and tend to be beneficial. A consideration of the total molecular size distribution shows that a narrow distribution with a relatively large mean molecular size is desirable. Based on the exoerimental results, conclusions are drawn concerning the characteristics of a super-1 ior furfuryl alcohol resin binder.