PREPREG AND FIBER-REINFORCED COMPOSITE MATERIAL

• Main Authors: SANO KENTARO, KAWASAKI JUNKO, YOSHIZAKI SOICHI, FURUKAWA KOJI, KAMAE TOSHIYA
• Format: Patent
• Language: Chinese; English
• Published: 06.11.2020
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

An object of the present invention is to provide a prepreg excellent in tackiness, resin strength after curing and non-fiber-direction strength, and a fiber-reinforced composite material using the prepreg. The present invention provides a prepreg comprising a reinforcing fiber and a resin composition, wherein the resin composition includes the following components [A] to [C], and the viscosity ofthe resin composition at 25 DEG C is 1000 Pa*s or more. [A]: an epoxy resin, [B]: dicyandiamide, and [C]: a compound having a melting point of 130 DEG C or lower and a difference in solubility parameter with [B] of 8 or less. 本发明的课题在于提供粘性和固化后的树脂强度及非纤维方向强度优异的预浸料坯以及使用该预浸料坯的纤维增强复合材料。本发明的预浸料坯包含增强纤维和树脂组合物，该树脂组合物包含下述构成要素[A]～[C]，该树脂组合物于25℃时的粘度为1000Pa·s以上。[A]：环氧树脂，[B]：双氰胺，[C]：熔点为130℃以下且溶解度参数与[B]的溶解度参数之差为8以内的化合物。