Disclosed is a carbon-fiber-reinforced composite material that is suitable for use as a construction material and exhibits high mechanical strength in harsh usage environments such as low-temperature environments and high-temperature moisture-absorbing environments. Also disclosed are an epoxy resin composition for producing the aforementioned carbon-fiber-rein-forced composite material and a prepreg obtained through the use of said epoxy resin composition. Said epoxy resin composition comprises at least the following constituents, by mass with respect to the total mass of the composition: (A) between 20% and 80% of an epoxy resin having the structure represented by formula (1); and (B) between 10% and 50% of an epoxy resin that has at least two ring structures with four or more members each and also has one amine glycidyl or ether glycidyl directly connected to a ring structure.
本发明公开了一种碳纤维增强复合材料,适用于作为建筑材料,并在低温环境和高温
潮湿环境等恶劣使用环境中表现出高机械强度。还公开了用于制备上述碳纤维增强复合材料的环氧
树脂组合物以及通过使用所述环氧
树脂组合物获得的预浸料。所述环氧
树脂组合物至少包括以下组分,按照组合物的总质量计,其中:(A) 20%至80%的具有式(1)所代表结构的环氧
树脂;以及(B) 10%至50%的至少具有两个具有四个或更多成员的环结构,并且还直接连接到环结构的
氨基环氧或醚氧基的环氧
树脂。