| abstract |
(57) [Problem] To make a polyamide resin excellent in heat resistance porous and highly functional, a technique suitable for the polyamide resin is required, but the pore diameter of the porous body can be controlled, and There was no method for producing a low-density porous body. SOLUTION: A polyamide dry gel obtained by drying a polyamide wet gel is used as a polyamide porous body. As a method for producing the polyamide porous body, when removing and drying the solvent from the polyamide wet gel, by using supercritical drying or reduced pressure drying by freezing to suppress shrinkage of the solid skeleton of the gel, the pore diameter is reduced. And a porous body having a low density and a low density can be manufactured. |