Separation membrane and manufacturing process thereof
AssigneeNGK Insulators, Ltd.
InventorsShogo Takeno, Akimasa Ichikawa
Life of this patent
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Abstract
A process for manufacturing a separation membrane with excellent productivity, which can uniformly dry and imidize a separation membrane precursor solution formed on an inner surface of through-holes of a monolith substrate and which does not require complicated operations such as placement of a monolith substrate in a dryer, and the separation membrane manufactured by the process are provided. The separation membrane is manufactured comprising: causing a separation membrane precursor solution to pass through through-holes in a porous monolith substrate, to form a membrane of the precursor solution on the surface of the through-holes, and drying the membrane by causing hot wind to pass through the through-holes.
Claims7
A process for manufacturing a separation membrane comprising:
- sealing the outer circumference of a porous monolith substrate;
- and
- passing a separation membrane precursor solution through through-holes in the porous monolith substrate to form a membrane of the precursor solution on the surface of the through-holes;
- and
- disposing a dryer to an open end of the porous monolith substrate and passing 50° C. to 300° C. wind through the through-holes at a rate of 0.5 to 30 m/s to form a dried membrane on the surface of the through-holes.
Dependencies are inferred from the claim text.