CYANATE ESTER RESIN COMPOSITION FOR FIBER-REINFORCED COMPOSITE MATERIAL, PREPREG AND FIBER-REINFORCED COMPOSITE MATERIAL

• Main Authors: ITO TOMOHIRO, IWATA MITSUHIRO, KAMIMURA YUKIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 11.04.2019
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

To solve the problem in which: as a matrix resin for a carbon fiber and a glass fiber-reinforced composite material applied to an aircraft and the like, a highly heat-resistant cyanate ester resin becomes a focus of attention but has defects such as poor elongation and toughness.SOLUTION: A cyanate ester resin composition for fiber-reinforced composite material contains (a) a cyanate ester resin, (b) a polyimide resin and (c) a curing accelerator or curing catalyst. Relative to the composition excluding the (c) curing accelerator or curing catalyst, the ratio of the (a) cyanate ester resin is 50-85 mass%.SELECTED DRAWING: Figure 1 【課題】航空機等に適用される炭素繊維やガラス繊維強化複合材料用マトリックス樹脂としては、高耐熱性のシアネートエステル樹脂が注目されているが、伸び、靭性に乏しい欠点を有している。【解決手段】（ａ）シアネートエステル樹脂、（ｂ）ポリイミド樹脂および（ｃ）硬化促進剤または硬化触媒を含有してなり、前記（ｃ）硬化促進剤または硬化触媒を除く組成物に対し、前記（ａ）シアネートエステル樹脂の配合割合が５０〜８５質量％である繊維強化複合材料用シアネートエステル樹脂組成物によって、上記課題を解決した。【選択図】図１