| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polyimide porous body having excellent heat resistance, a fine cell structure, and low relative permittivity, and a method for producing the same; and further a polyimide porous body having extremely fine pore sizes so as to suppress reductions in mechanical strength and insulation properties specific to porous bodies and a method for producing the same. <P>SOLUTION: The method for producing the polyimide porous body includes the steps of: applying a polymer solution containing polyamic acid, a phase separation agent for separating the phases of the polyamic acid, an imidization catalyst, and a dehydrating agent, on a substrate, and drying the polymer solution to produce a phase-separated structure having a microphase-separated structure; producing a porous body by removing the phase separation agent from the phase-separated structure; and subjecting the polyamic acid in the porous body to imidization to synthesize a polyimide. <P>COPYRIGHT: (C)2013,JPO&INPIT |
