A fiber-reinforced composite material is provided which is capable of achieving CAI, ILSS, and interlaminar fracture toughness concurrently at high levels, in particular, capable of achieving high CAI. The composite material is composed of a laminated body including a plurality of reinforcing-fiber-containing layers and a resin layer in each interlaminar region between adjacent reinforcing-fiber-containing layers, wherein the resin layer is a layer wherein a cured product of a compound having in its molecule a benzoxazine ring of formula (1) and epoxy resin is impregnated with at least polyamide 12 powder:
(R
1
: C1-C12 chain alkyl group or the like; H is bonded to at least one of the carbon atoms of the aromatic ring at ortho- or para-position with respect to C to which the oxygen atom is bonded).
提供了一种纤维增强复合材料,能够同时高
水平地实现CAI、ILSS和层间断裂韧性,特别是能够实现高CAI。该复合材料由多个含增强纤维层和相邻含增强纤维层之间的每个层间区域中的
树脂层组成的层压体构成,其中该
树脂层是一层,其中含有具有分子中苯并噁嗪环的化合物的固化产物和环氧
树脂,至少浸渍有聚酰胺12粉末:(R1:C1-C12链烷基或类似物;H与芳香环上C上的至少一个碳原子以ortho-或para-位置结合,与氧原子结合)。