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US 3,969,124 AGranted
Carbon articles
AssigneeExxon Research & Engineering Co.
InventorWilford S. Stewart
Life of this patent
Estimating the term…
Abstract
High strength shaped carbonaceous articles are prepared by combining particles of carbon, graphite and mixtures thereof that have a predetermined particle size and particle size distribution with resin binder and thereafter shaping and curing the mixture. Typically, the shaped article is pyrolyzed. Additionally, the bulk density of the articles can be increased and the porosity reduced by vapor depositing graphite in the pores of the article.
Claims9
A process for the manufacture of low porosity, high density shaped carbonaceous articles comprising:
- combining carbonaceous particles of predetermined particle size and particle size distribution with a polymeric resin binder, forming the resin binder and particles into a shaped article, curing the so shaped resin binder and particles and thereafter pyrolyzing the article so shaped and cured, said carbonaceous particles being selected from the group consisting of carbon, graphite and mixtures thereof and said particles having particle sizes ranging from about 100 microns to about 0.001 microns with about 50 wt. % of the carbonaceous particles finer than 10 microns in equivalent spherical diameter.
The method of preparing a shaped, carbonaceous article comprising:
- a. combining carbonaceous particles with from about 20 to about 25 wt. % of a phenolic resin binder, said carbonaceous particles having equivalent spherical diameters less than about 100 microns and with from about 50 wt. % of said particles having equivalent spherical diameters finer than about 10 microns said carbonaceous particles selected from carbon, graphite and mixtures thereof;
- b. forming the mixture of resin and particles into a shaped article;
- and,
- c. treating the shaped article under conditions sufficient to cure the resin.
1 more element
Dependencies are inferred from the claim text.