公开(公告)号：US20200148846A1

公开(公告)日：2020-05-14

申请号：US16498227

申请日：2018-03-22

Applicant: KANEKA CORPORATION ,  JAPAN AEROSPACE EXPLORATION AGENCY

Inventor： Yoshio FURUKAWA ,  Takefumi FURUTA ,  Takeshi CHIBA ,  Rikio YOKOTA ,  Yuichi ISHIDA

IPC: C08J5/24 ,  C08J5/04 ,  C08J5/12 ,  C08G73/12 ,  B29C70/10

Abstract: An object of the present invention is to reduce or eliminate a defect (e.g., a void) by achieving (i) a semipreg and a prepreg each of which allows a reduction in residual volatile component and (ii) methods for producing the semipreg and the prepreg, respectively, and consequently to achieve (iii) a fiber-reinforced composite material which has high heat resistance and superior mechanical strength and a (iv) a method for producing the fiber-reinforced composite material. The present invention attains the above object by providing, for example, a semipreg containing: powders of an imide oligomer; and reinforcement fibers, the imide oligomer being represented by a specific general formula (1).