EPOXY RESIN COMPOSITION PREPREG CURED RESIN OBJECT AND FIBER-REINFORCED COMPOSITE MATERIAL

• Main Authors: ARAI ATSUHITO, SAKATA HIROAKI, FURUKAWA KOJI
• Format: Patent
• Language: English; Korean
• Published: 19.07.2017
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

단시간에 경화 가능한 뛰어난 경화성과 열안정성이 뛰어난 섬유 강화 복합 재료를 제조하기 위한 에폭시수지 조성물 및 프리프레그를 제공한다. 소정의 에폭시수지[A], 방향족아민 화합물[B], 구조식이 일반식(I) 또는 일반식(II)(X는 단환 또는 다환식 방향환 구조, 축합 다환식 방향환 구조, 방향족 복소환 구조로부터 선택되는 구조이며, 치환기로서 탄소수 4 이하의 알킬기, 히드록시기, 아미노기 중 어느 하나를 가져도 좋다.)으로 나타내는 유기산 히드라지드 화합물[C], 열가소성 수지[D]를 포함하는 에폭시수지 조성물로서, 구성요소[C]가 구성요소[A] 100질량부에 대해서 1~25질량부이며, 80℃에서 2시간 보지했을 때의 점도가 80℃에서 초기 점도의 2.0배 이하인 에폭시수지 조성물이다. Provided are a prepreg and an epoxy resin composition which has excellent thermal stability and excellent curability that renders the composition curable in a short time and which is for use in producing a fiber reinforced composite material. The epoxy resin composition comprises a given epoxy resin [A], an aromatic amine compound [B], an organic acid hydrazide compound [C] having a structural formula represented by general formula (I) or (II) (X is a structurae selected from among monocyclic and polycyclic aromatic ring structures, polycyclic aromatic ring structures, and aromatic heterocyclic structures and optionally has, as a substituent, any of C 4 or lower alkyl groups, a hydroxy group, and an amino group), and a thermoplastic resin [D], wherein the amount of the constituent element [C] is 1-25 parts by mass per 100 parts by mass of the constituent element [A], the epoxy resin composition, after having been held at 80°C for 2 hours, having a viscosity which is up to 2.0 times the initial viscosity at 80°C.