Process of making a hollow structure of carbon material
AssigneeMitsubishi Pencil Company, Limited
InventorYoshihisa Suda
Life of this patent
Estimating the term…
Abstract
A process for producing hollow structures of carbon material having desired shape and properties of carbon by obtaining a carbon paste composition, molding portions of the hollow structure by a method selected from the group consisting of an injection molding method, an extrusion molding method, a casting method or a fluidizing method, bonding the molded portions together using a paste composition, solidifying the bonded portion by precarbonizing, the hollow structures thus provided, and then calcining in an inert gas atmosphere as required. Hollow structures of carbon materials having a rigid bond, excellent impermeability, and complicated shape can be readily accurately and inexpensively produced without working after calcining.
Claims8
A process for producing a hollow structure of carbon materials comprising the steps of:
- mixing at least one member selected from the group consisting of a monomer and a precondensated polymer of a thermosetting resin with carbon powder to produce a mixture,
- kneading the mixture in a kneader capable of applying a high shearing force to produce a molding paste composition having carbon powder uniformly dispersed therein;
- molding the molding paste composition into at least two portions of a hollow structure by a method selected from the group consisting of an injection molding method, an extrusion molding method, a casting method and a fluidizing method,
- bonding the two portions of a hollow structure together with a bonding paste composition to produce a bonded hollow structure, precarbonizing the bonded hollow structure to produce a hollow structure, and
- calcining the hollow structure in an inert gas atmosphere.
Dependencies are inferred from the claim text.