A production method for a fiber-reinforced composite material comprises: a first step of stacking a prepreg including: a reinforcing fiber layer including reinforcing fibers and a resin composition with which the space between fibers of the reinforcing fibers is impregnated and which contains (A) a benzoxazine resin, (B) an epoxy resin, and (C) a curing agent having 2 or more phenolic hydroxy groups in a molecule and a surface layer provided on at least one surface of the reinforcing fiber layer and containing (A) a benzoxazine resin, (B) an epoxy resin, (C) a curing agent having 2 or more phenolic hydroxy groups in a molecule, and (D) polyamide resin particles having an average particle size of 5 to 50 µm and a melting point of 175 to 210°C plurally and performing heating at a temperature of 120°C or more and less than M1°C when the melting point of the polyamide resin particles measured in the composition forming the surface layer is denoted by M1°C; and a second step of performing heating at a temperature of M1°C or more after the first step to cure the resin.
一种纤维增强复合材料的生产方法包括: 第一步 堆叠预浸料,预浸料包括增强纤维层,包括增强纤维和浸渍增强纤维的纤维间隙的
树脂组合物,该
树脂组合物含有(A)苯并恶嗪
树脂、(B)环氧
树脂和(C)分子中含有2个或2个以上
酚羟基的固化剂;以及在增强纤维层的至少一个表面上设置的表面层,该表面层含有(A)苯并恶嗪
树脂、(B)环氧
树脂、(C)分子中含有2个或2个以上
酚羟基的固化剂和(D)分子中含有2个或2个以上
酚羟基的固化剂、(B) 环氧
树脂,(C) 分子中含有 2 个或 2 个以上
酚羟基的固化剂,和 (D) 聚酰胺
树脂颗粒,其平均粒径为 5 至 50 µm,熔点为 175 至 210°C,当在形成表层的组合物中测得的聚酰胺
树脂颗粒的熔点用 M1°C 表示时,在 120°C或以上且小于 M1°C的温度下进行加热;在第一步之后,在 M1℃或更高温度下进行第二步加热,以固化
树脂。