토우프레그

• Main Authors: TSUCHIDA HIROYA, YOSHIZAKI SOICHI, TSUZUKI MASAHIRO, ARAI NOBUYUKI
• Format: Patent
• Language: Korean
• Published: 08.02.2022
• 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

보빈을 세웠을 때의 지관(紙管)으로부터의 흘러내림이 발생하지 않으며, 또한 해서(解舒) 시의 감김 체결이 적어 보빈의 형상 안정성이 좋기 때문에 취급성이 우수하고, 또한, 필라멘트 와인딩 성형 시의 토우의 확폭성(擴幅性)이 좋기 때문에, 공극(空隙)이 없어 품질이 좋은 성형품을 얻을 수 있는 토우프레그를 제공하는 것을 과제로 한다. 성분 [A] 에폭시 수지, [B] [A]에 상용하고 있는 에폭시 수지 경화제를 포함하며, 또한 조건 (Ⅰ)을 충족시키고, 또한 조건 (X) 또는 (Y) 중 어느 1개를 충족시키는 에폭시 수지 조성물이 강화 섬유 다발에 함침되어 이루어지는 토우프레그. The present invention addresses the problem of providing a towpreg in which slippage off a paper tube does not occur when a bobbin is raised, which exhibits little wrapping shrinkage when unraveled and has good bobbin shape stability, and thus has superior ease of handling, and which also exhibits good tow expansion during filament winding molding, and thus is capable of yielding a void-free molded article of good quality.　The towpreg is obtained by impregnating a reinforcing fiber bundle with an epoxy resin composition that contains component [A] an epoxy resin and component [B] an epoxy resin curing agent compatible with [A], and that satisfies condition (I) and one of conditions (X) and (Y).