公开(公告)号：US20210122888A1

公开(公告)日：2021-04-29

申请号：US16645307

申请日：2018-08-07

申请人： MATSUMOTO YUSHI-SEIYAKU CO., LTD.

发明人： Atsushi YABUMOTO ,  Kentaro SUZUKI ,  Takeyoshi NAKAYAMA

IPC分类号： C08J5/06 ,  C08J5/04 ,  D06M15/59

摘要： A sizing agent for matrix-resin-reinforcement fiber, a synthetic fiber strand sized therewith, and a fiber-reinforced composite material reinforced by the sized fiber strand. The sizing agent for reinforcement fiber contains a polyamide (A), a carbodiimide group-containing compound (B) and water (C), wherein the polyamide (A) has a melt viscosity ranging from 100 to 15,000 mP·s at 150° C. and the compound (B) has at least two carbodiimide groups per molecule. The polyamide (A) is preferably a water-soluble polyamide.