Provided is a carbon fiber forming raw material having excellent interfacial adhesion between carbon fibers and a thermosetting resin and capable of giving a molded article having excellent mechanical characteristics. The carbon fiber forming raw material is a carbon fiber forming raw material (Z) as a prepreg including sizing agent-coated carbon fibers and a thermosetting resin or a carbon fiber forming raw material (Y) as a forming material that includes sizing agent-coated carbon fibers and has a woven fabric form or a braid form. The sizing agent includes components (A) and (B). The component (A) is an epoxy compound having two or more epoxy groups or two or more types of functional groups. The component (B) is one or more compounds selected from the group consisting of a tertiary amine compound, a tertiary amine salt, a quaternary ammonium salt, a quaternary phosphonium salt, and a phosphine compound. The component (B) is contained in an amount of 0.1 to 25 parts by mass relative to 100 parts by mass of the component (A).
本发明提供了一种
碳纤维成型原料,该原料在
碳纤维和热固性
树脂之间具有极佳的界面粘附性,并能使成型品具有极佳的机械特性。该
碳纤维成型原料是一种
碳纤维成型原料(Z),作为预浸料,包括上浆剂包覆的
碳纤维和热固性
树脂;或者是一种
碳纤维成型原料(Y),作为成型材料,包括上浆剂包覆的
碳纤维,并具有编织物或编织物的形态。上浆剂包括组分(A)和(B)。组分(A)是具有两个或两个以上环
氧基团或两种或两种以上官能团的环
氧化合物。组分(B)是一种或多种化合物,选自由叔胺化合物、叔胺盐、季
铵盐、季
鏻盐和膦化合物组成的组。相对于 100 重量份的组分(A),组分(B)的含量为 0.1 至 25 重量份。