Title:
PREPREG, FIBER-REINFORCED COMPOSITE MATERIAL, TUBULAR BODY MADE OF FIBER-REINFORCED COMPOSITE MATERIAL, GOLF CLUB SHAFT, AND FISHING ROD
Document Type and Number:
WIPO Patent Application WO/2024/029233
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing: a prepreg which comprises a resin composition and has excellent elastic modulus and heat resistance and also has excellent appearance including weather resistance and transparency; and a fiber-reinforced composite material, a tubular body made of a fiber-reinforced composite material, a golf club shaft and a fishing rod in each of which the prepreg is used and each of which has excellent mechanical properties, heat resistance and appearance. As a solution for the problem, a prepreg is provided, which comprises reinforcing fibers and a resin composition, in which the resin composition comprises the components [A] to [D] mentioned below and satisfies the requirements (1) to (5) mentioned below. Component [A]: a novolac-type epoxy resin; component [B]: an oxazolidone-type epoxy resin; component [C]: one or both of a sorbitol-type epoxy resin and a glycerol-type epoxy resin; and component [D]: dicyandiamide.
Requirement (1): the content of the component [A] is 20 to 50 parts by mass relative to 100 parts by mass that is the total amount of all of the epoxy resins. Requirement (2): the content of the component [B] is 10 to 40 parts by mass relative to 100 parts by mass that is the total amount of all of the epoxy resins. Requirement (3): the content of the component [C] is 10 to 40 parts by mass relative to 100 parts by mass that is the total amount of all of the epoxy resins. Requirement (4): the component [B] and the component [C] are contained in a total amount of 40 parts by mass or more in 100 parts by mass that is the total amount of all of the epoxy resins. Requirement (5): a component [E] that is a glycidylamine-type epoxy resin is not contained or, if contained, the component [E] is contained in an amount of 10 parts by mass or less relative to 100 parts by mass that is the total amount of all of the epoxy resins.
Inventors:
OMMURA YASUYUKI (JP)
HIRANO MASANORI (JP)
SANO KENTARO (JP)
HIRANO MASANORI (JP)
SANO KENTARO (JP)
Application Number:
PCT/JP2023/023765
Publication Date:
February 08, 2024
Filing Date:
June 27, 2023
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
C08J5/24; C08G59/18
Foreign References:
| JP2022096749A | 2022-06-30 | |||
| JP2021055103A | 2021-04-08 | |||
| JP2021147550A | 2021-09-27 |
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