Title:
CURABLE RESIN COMPOSITION AND TOW PREPREG USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/065663
Kind Code:
A1
Abstract:
Provided is a curable resin composition suitable for use as a matrix resin for a fiber-reinforced composite material having excellent fatigue resistance, the curable resin composition having, low viscosity, minimal increase in viscosity even in a prolonged impregnation step, and good impregnation into reinforcing fibers, and high toughness being obtained in a molded article obtained by curing the curable resin composition. A curable resin composition for a tow prepreg having (A) an epoxy resin, (B) core-shell-type rubber particles, (C) dicyandiamide or a derivative thereof, and (D) a solid aromatic urea compound or a solid imidazole compound as essential components thereof, at least 25% by mass of the epoxy resin (A) being a bisphenol-F-type epoxy resin having a weight per epoxy equivalent of 180 g/eq, the blended amount of the core-shell-type rubber particles (B) being 2-20% by mass with respect to the total amount of components (A) through (D), and the viscosity of the curable resin composition for a tow prepreg at 25°C being in the range of 3 to 45 Pa∙s.
Inventors:
TANIGUCHI YUICHI (JP)
Application Number:
PCT/JP2018/035541
Publication Date:
April 04, 2019
Filing Date:
September 26, 2018
Export Citation:
Assignee:
NIPPON STEEL CHEMICAL & MAT CO LTD (JP)
International Classes:
C08G59/56; C08G59/20; C08J5/24; C08L51/04; C08L63/04
Domestic Patent References:
| WO2017099060A1 | 2017-06-15 | |||
| WO2018181849A1 | 2018-10-04 |
Foreign References:
| JP2011157491A | 2011-08-18 | |||
| JP2016190920A | 2016-11-10 | |||
| JP2012056980A | 2012-03-22 | |||
| JP2016194669A | 2016-11-17 | |||
| JP2006028294A | 2006-02-02 | |||
| JP2013075998A | 2013-04-25 | |||
| JP2015048453A | 2015-03-16 | |||
| JP2016017110A | 2016-02-01 |
Attorney, Agent or Firm:
SASAKI Kazuya et al. (JP)
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