Polyimide resin composition and varnish produced from terminal-modified imide oligomer prepared using 2-phenyl-4,4'-diaminodiphenyl ether and thermoplastic aromatic polyimide prepared using oxydiphthalic acid, polyimide resin composition molded article and prepreg having excellent heat resistance and mechanical characteristic, and fiber-reinforced composite material thereof

Abstract

An imide resin composition including a terminal-modified imide oligomer of General Formula (1) and a thermoplastic aromatic polyimide of General Formula (2). (In Formula (1), either Ror Rshows a phenyl group and the other shows a hydrogen atom; Rand Rshow a divalent residue of aromatic diamine; Rand Rshow a tetravalent residue of aromatic tetracarboxylic acid; m and n satisfy relationships of m≥1, n≥0, 1≤m+n≤20, and 0.05≤m/(m+n)≤1; and an arrangement of repeating units may be either a block or random.) (In Formula (2), Rand Rshow a divalent residue of aromatic diamine; Rshows a tetravalent residue of aromatic tetracarboxylic acid; m and n satisfy relationships of m≥1 and n≥0, and an arrangement of repeating units may be either a block or random.)