| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing a molded article of an aromatic polyimide resin having improved mechanical properties with excellent continuous productivity. <P>SOLUTION: The method for producing the molded article of the aromatic polyimide resin comprises use of polyimide powder produced by reacting pyromellitic dianhydride with 4,4'-diaminodiphenyl ether and having an average particle diameter of 0.1-9 μm and an imide cyclization ratio of 50-95%, and comprises the following two steps: (1) the first step to apply pressure of >294.2 MPa and ≤980.7 MPa to the polyimide powder at <100°C to form a green compact and (2) the second step to heat the green compact obtained by the first step at 350-500°C in vacuum or in an inert gas atmosphere under normal pressure. <P>COPYRIGHT: (C)2013,JPO&INPIT |
