申请人:TORAY INDUSTRIES, INC.
公开号:US20150210813A1
公开(公告)日:2015-07-30
A prepreg includes; sizing agent-coated carbon fibers coated with a sizing agent; and a thermosetting resin composition impregnated into the sizing agent-coated carbon fibers. The sizing agent includes an aliphatic epoxy compound (A) and an aromatic compound (B) at least containing an aromatic epoxy compound (B1). The thermosetting resin composition includes a thermosetting resin (D) and a latent hardener (E), and optionally includes an additive (F) other than the thermosetting resin (D) and the latent hardener (E). The (a)/(b) ratio is within a predetermined range where (a) is the height of a component at a binding energy assigned to CHx, C—C, and C═C and (b) is the height of a component at a binding energy assigned to C—O in a C
1s
core spectrum of the surfaces of the sizing agent-coated carbon fibers analyzed by X-ray photoelectron spectroscopy.
预浸料包括:涂有分散剂的碳纤维,涂有分散剂;以及浸渍在涂有分散剂的碳纤维中的热固性树脂组合物。分散剂包括脂肪族环氧化合物(A)和至少含有芳香族环氧化合物(B1)的芳香族化合物(B)。热固性树脂组合物包括热固性树脂(D)和潜在硬化剂(E),并且可选地包括除热固性树脂(D)和潜在硬化剂(E)以外的添加剂(F)。在由X射线光电子能谱分析的涂有分散剂的碳纤维表面的C1s光谱中,(a)是分配给CHx,C-C和C═C的结合能的组分高度,(b)是分配给C-O的结合能的组分高度,(a)/(b)比值在预定范围内。