| 摘要 |
PURPOSE:To obtain the titled molding with a better wear resistance without lowering of strength are impact resistance by thermally hardening a polyamideimide resin molding formed by melt extrusion with the atmosphere of vacuum, an inert gas or the like when the heating temperature is within a specified range. CONSTITUTION:A polyamideimide resin molding mainly composed of a polyamideimide resin having as main component unit the repeated unit expressed by the formula I (Ar represents trivalent aromatic group containing one or more carbon's six-membered rings; R bivalent aromatic and/or fatty residual group; and R' H, methyl or phenyl) as molded by melt extrusion is hardened by thermal treatment with the atmosphere of vacuum, inert gas or CO2 gas when the heating temperature T is within the range as expressed by the formula II [Tg presents the glass transition temperature ( deg.C) of the polyamideimide resin hardened by thermal treatment and T heating temperature ( deg.C)] to obtain the desired molding. |
