에폭시 수지 조성물, 프리프레그 및 섬유 강화 복합 재료

• Main Authors: SANO KENTARO, KURODA TAIKI, TAKAIWA REO, HIRANO NORIYUKI
• Format: Patent
• Language: Korean
• Published: 06.03.2019
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; 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

높은 내열성 및 탄성율과 낮은 착색성을 양립하는 에폭시 수지 경화물을 얻을 수 있는 한편 섬유 강화 복합 재료의 매트릭스 수지로서 이용했을 때에 성형품 표면에 백색 석출물이 생기지 않고, 뛰어난 외관을 가지는 에폭시 수지 조성물을 제공한다. 성분［A］로서 에폭시 수지, 성분［B］로서 이미다졸 화합물을 포함하고, 하기 조건(a) ~ (d)를 만족하는 에폭시 수지 조성물: (a): 성분［A］로서［A1］이소시아눌산형 에폭시 수지를 전체 에폭시 수지 100 질량부 중 10 ~ 40 질량부 포함한다. (b): 성분［A］로서［A2］비스페놀형 에폭시 수지를 전체 에폭시 수지 100 질량부 중 40 ~ 90 질량부 포함한다. (c): ［A2］의 평균 에폭시 당량은 220 ~ 500 g/eq이다. (d): 성분［B］의 함유량이 전체 에폭시 수지 중의 에폭시기 수에 대한 이미다졸 수의 비가 0.01 ~ 0.06이 되는 양이다. The present invention provides an epoxy resin composition that serves to produce a cured epoxy resin that simultaneously realizes a high heat resistance, a high elastic modulus, and a low color and to produce a molded article having a good appearance without suffering the formation of white spots on the surface thereof when used as matrix resin in a fiber reinforced composite material. It provides an epoxy resin composition that includes an epoxy resin as component [A] and an imidazole compound as component [B] and meets the undermentioned conditions (a) to (d): (a) it contains an isocyanurate type epoxy resin [A1] as component [A] in an amount of 10 to 40 parts by mass relative to the total quantity of epoxy resins which represents 100 parts by mass, (b) it contains a bisphenol type epoxy resin [A2] as a component [A] in an amount of 40 to 90 parts by mass relative to the total quantity of epoxy resins which represents 100 parts by mass, (c) resin [A2] has an average epoxy equivalent weight of 220 to 500 g/eq, and (d) the content of component [B] is such that the ratio of the number of imidazole groups to the total number of epoxy groups in the epoxy resins is 0.01 to 0.06.