申请人:TORAY INDUSTRIES, INC.
公开号:US11111345B2
公开(公告)日:2021-09-07
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 C1s core spectrum of the surfaces of the sizing agent-coated carbon fibers analyzed by X-ray photoelectron spectroscopy.
一种预浸料包括:涂有上浆剂的碳纤维;涂有上浆剂的碳纤维;以及浸渍到涂有上浆剂的碳纤维中的热固性树脂组合物。上浆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) 和潜固化剂 (E),还可选择包括热固性树脂 (D) 和潜固化剂 (E) 以外的添加剂 (F)。(a)/(b)比值在预定范围内,其中(a)是在通过 X 射线光电子能谱分析的上浆剂包覆碳纤维表面的 C1s 核心光谱中,结合能分配给 CHx、C-C 和 C═C 的成分的高度,(b)是结合能分配给 C-O 的成分的高度。