Process for preparation of a wholly carbonaceous diaphragm for a

Details Process for preparation of a wholly carbonaceous diaphragm for a Process for preparation of a wholly carbonaceous diaphragm for a

1990-01-17

1992-10-06

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

264344, 423448, 4234491, C01B 3102, C01B 3104

Patent

active

051529386

ABSTRACT:
A process for preparing a wholly carbonaceous diaphragm includes blending a powder of graphite with a chlorine-containing resin and a monomer or a primary condensate of a thermosetting resin containing a triazine ring; adding thereto a solvent or a plasticizer capable of dissolving these resin components; thoroughly kneading the resulting mixture so that crystals of graphite cleft and binder resin are allowed to disperse with strong affinity, whereby a resulting composition is made into a sheet-form in which the crystal surfaces of graphite are oriented to a high degree; further passing the sheet-form through a calendering roll to preform it into a film or a sheet; then forming these materials into a shape of a diaphragm in heated air to remove the solvent or plasticizer, and to produce a completely cured body causing no thermal deformation by promoting cross linking reaction and curing reaction of the chlorine-containing resin by triazine; and then baking the cured body in an inert atmosphere.

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