| abstract |
PURPOSE: To enable use of a heat-resistant stacking support at a temperature of 200 deg.C or above by forming it by coating a core at least partially with polyimide fibers constituted of polyimide expressed by a specific general formula. CONSTITUTION: A heat-resistant stacking support is formed by coating a self-supporting core at least partially with a polyimide fiber composite material expressed by formula I [A denotes a four-valent aromatic group of formulas II and III (X is CO, CH2 , O, S, CF2 ), etc., (n) an integer of 1 or more and R a bivalent aromatic group of formula IV etc.]. As for the fiber composite material, the one having a thickness of 0.50-8.0 mm, a density of 0.3-1.1 g/cm<3> and a tensile strength of 15 N/mm<2> or above is suitable. The stacking support thus obtained is suitable especially for stacking heated aluminum sections. |