公开(公告)号：US20210171728A1

公开(公告)日：2021-06-10

申请号：US16616907

申请日：2019-06-28

Applicant: SUNCORONA ODA CO., LTD. ,  KANAZAWA INSTITUTE OF TECHNOLOGY

Inventor： Keisuke SONE ,  Masaki KOBAYASHI ,  Hirofumi NISHIDA ,  Kiyoshi UZAWA ,  Hisai UEDA

IPC: C08J5/24 ,  C08K3/04 ,  C08K7/06

Abstract: An object of the present invention is to provide a fiber-reinforced thermoplastic resin sheet which can be manufactured into a molded body exhibiting excellent appearance quality as well as exhibits both high moldability and strength and a manufacturing method of such a fiber-reinforced thermoplastic resin sheet. The present invention relates to a fiber-reinforced thermoplastic resin sheet which is a random laminated body of a tape-shaped unidirectional prepreg and contains spread reinforcement fibers and a polymer (a) and in which the polymer (a) is a polymer of at least a bisphenol A type epoxy compound represented by Formula (1): [where n is an integer of 1 to 4] and a bisphenol compound selected from the group consisting of bisphenol A, bisphenol F, bisphenol S, bisphenol B, bisphenol E, and bisphenol P, and Mwa is 25,000 or more and a proportion (Mwb/Mwa) of Mwb to Mwa is 1.01 to 1.8, where Mwa denotes a weight average molecular weight of the polymer (a) and Mwb denotes a weight average molecular weight of a polymer (b) contained in a heat-treated fiber-reinforced thermoplastic resin sheet acquired by heating the fiber-reinforced thermoplastic resin sheet at 180° C. for 1 hour.

公开(公告)号：US20180100043A1

公开(公告)日：2018-04-12

申请号：US15725556

申请日：2017-10-05

Applicant: Suncorona Oda Co., Ltd.

Inventor： Yoshikazu TAKASHIMA ,  Toshiaki KARASAWA ,  Masaki KOBAYASHI

IPC: C08J5/04 ,  B32B27/38 ,  C08L63/00 ,  C08G59/24 ,  C08G59/06 ,  C08K3/04

CPC classification number: C08J5/042 ,  B32B27/38 ,  B32B2262/101 ,  B32B2262/106 ,  C08G59/06 ,  C08G59/245 ,  C08G59/621 ,  C08J5/24 ,  C08J2300/22 ,  C08J2363/00 ,  C08J2363/02 ,  C08K3/046 ,  C08L63/00 ,  C08L2205/16

Abstract: The present invention provides a fiber-reinforced thermoplastic resin sheet having both high strength and moldability, to provide a unidirectional prepreg from which such a fiber-reinforced thermoplastic resin sheet can be acquired, and to provide a manufacturing method of a unidirectional prepreg. The present invention relates to a unidirectional prepreg having a tape shape comprising: spread reinforcement fibers; and a polymer of a bisphenol A type epoxy compound represented by Formula (1): [where n is an integer of 1 to 4] and a bisphenol compound selected from the group consisting of bisphenol A, bisphenol F, bisphenol S, bisphenol B, bisphenol E, and bisphenol P, wherein the polymer has a weight-average molecular weight of 5,000 to 25,000, and wherein the average content number of the reinforcement fibers in a thickness direction of the unidirectional prepreg is ten or less.

公开(公告)号：US20230001652A1

公开(公告)日：2023-01-05

申请号：US17781197

申请日：2020-12-01

Applicant: TOYO KOHAN CO., LTD. ,  SUNCORONA ODA CO., LTD.

Inventor： Hiroki YANAGA ,  Hirofumi TASHIRO ,  Hideki YAMAGATA ,  Keisuke SONE ,  Masaki KOBAYASHI

IPC: B29C70/14 ,  B29C70/34 ,  B32B3/02 ,  B32B15/08 ,  B32B15/18 ,  B32B25/02 ,  B32B33/00 ,  B32B37/20

Abstract: [Object]
The purpose of the present invention is to provide a layered composite that is high in both flexural modulus and moldability.
[Solving Means]
Provided is a layered composite including a carbon-fiber-reinforced resin in which a chopped strand prepreg obtained by impregnating fiber in resin is oriented in such a manner as to exhibit pseudo-isotropic properties, and a steel plate that is layered on at least one surface of the carbon-fiber-reinforced resin and has a tensile breakage elongation ϕ of equal to or more than 20%, the flexural modulus in a flat plate state obtained in compliance with ASTM D-790 being equal to or more than 30 GPa.