Process for producing hard carbonaceous sheets

Details Process for producing hard carbonaceous sheets Process for producing hard carbonaceous sheets

1987-11-02

1989-11-21

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 296, 423449, 427228, B05D 3102, C01B

Patent

active

048821020

ABSTRACT:
An improved process for producing hard carbonaceous sheets, which comprises uniformly dispersing as a viscous binder in fine carbon powder a mixture of relatively readily polymerizable thermosetting resins such as monomers, prepolymers or low polymers exhibiting high residual carbon yield after calcining; applying mechanical energy to the resultant mixture to induce mechanochemical phenomenon to produce molding paste composition in which said binder is uniformly rigidly bonded physicochemically to the surfaces of the primary particles of the fine powder, molding the composition by a fluid rolling method or a coating method in a film or sheet shape; infusibilizing the resultant molding; and calcining the resultant molding in an inert gas atmosphere. Thus, the hard carbonaceous sheets thus produced have small porosity, high mechanical strength, high elastic modulus, isotropy and uniform thickness of several microns to several mm using widely available and inexpensive manufacturing processes.

REFERENCES:
patent: 3355527 (1967-11-01), Muta et al.
patent: 3592883 (1971-07-01), Kawakubo
patent: 4213956 (1980-07-01), Ubbelohde
patent: 4360485 (1982-11-01), Emanuelson et al.
patent: 4582632 (1986-04-01), Rokujo et al.

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