Title:
PREPREG, PREFORM, AND FIBER-REINFORCED RESIN MOLDED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2023/095786
Kind Code:
A1
Abstract:
Provided is a prepreg in which 5 to 65 parts by weight of a sheet-like fiber base material is impregnated with 35 to 95 parts by weight of a resin, in which the sheet-like fiber base material comprises more than 50% by weight and 99% by weight or less of discontinuous carbon fibers (A) and 1% by weight or more and less than 50% by weight of discontinuous organic fibers (B) both dispersed uniformly, the prepreg satisfying any one of the following requirements 1 to 3. Requirement 1: the resin is a thermoplastic resin (C), and the difference between the melting point Tmb (°C) of the organic fibers (B) and the melting point Tmc (°C) of the thermoplastic resin (C) (i.e., Tmb-Tmc) is 20 to 200°C; requirement 2: the resin is a heat-curable resin (D) and the difference between the melting point Tmb (°C) of the organic fibers (B) and the curing temperature Tmd (°C) of the heat-curable resin (D) (i.e., Tmb-Tmd) is 20 to 400°C: and requirement 3: the organic fibers (B) do not have a melting point. A prepreg having excellent moldability, mechanical properties and impact strength, a preform, and a fiber-reinforced resin molded article are provided.
Inventors:
KAWAHARA KOTA (JP)
MATSUTANI HIROAKI (JP)
HONMA MASATO (JP)
MATSUTANI HIROAKI (JP)
HONMA MASATO (JP)
Application Number:
PCT/JP2022/043166
Publication Date:
June 01, 2023
Filing Date:
November 22, 2022
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
C08J5/24
Domestic Patent References:
| WO2014021366A1 | 2014-02-06 |
Foreign References:
| JP2020158912A | 2020-10-01 | |||
| JP2013209758A | 2013-10-10 | |||
| JP2013056985A | 2013-03-28 | |||
| JPS51126260A | 1976-11-04 |
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