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Towpreg, Method For Manufacturing Same, And Method For Manufacturing Pressure Container
Abstract: The present invention addresses the problem of providing: a towpreg that has superior bobbin unspoolability and process pass-through properties, and is capable of yielding a fiber-reinforced composite having extremely high 0° tensile strength utilization; and a pressure container using such a towpreg. The means for solving this problem is a towpreg obtained by impregnating a reinforcing fiber tow with an epoxy resin composition containing [A]-[D], wherein: the epoxy resin composition contains 10-90 parts by mass of [A] and 10-50 parts by mass of [B] per 100 parts by mass of the epoxy resin component; the epoxy resin composition has a 25°C viscosity (?25) of 1-40 Pa·s and a 40°C viscosity (?40) of 0.2-5 Pa·s; and the cured epoxy resin composition has a glass transition temperature (Tg) of 95°C or higher. [A] A bisphenol epoxy resin [B] Unsubstituted or substituted N,N-diglycidyl aniline [C] Dicyandiamide [D] A cure accelerator
Notices, Deadlines & Correspondence
Patent Information
Applicants
TORAY INDUSTRIES, INC.
Inventors
1. TSUZUKI, Masahiro
2. SANO, Kentaro
3. KAMAE, Toshiya
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202047053357-STATEMENT OF UNDERTAKING (FORM 3) [08-12-2020(online)].pdf | 2020-12-08 |
| 2 | 202047053357-PROOF OF RIGHT [08-12-2020(online)].pdf | 2020-12-08 |
| 3 | 202047053357-PRIORITY DOCUMENTS [08-12-2020(online)].pdf | 2020-12-08 |
| 4 | 202047053357-FORM 1 [08-12-2020(online)].pdf | 2020-12-08 |
| 5 | 202047053357-DECLARATION OF INVENTORSHIP (FORM 5) [08-12-2020(online)].pdf | 2020-12-08 |
| 6 | 202047053357-COMPLETE SPECIFICATION [08-12-2020(online)].pdf | 2020-12-08 |
| 7 | 202047053357-FORM-26 [27-02-2021(online)].pdf | 2021-02-27 |
| 8 | 202047053357.pdf | 2021-10-18 |
| 9 | 202047053357-Correspondence_Form-26_04-08-2022.pdf | 2022-08-04 |