EPOXY RESIN COMPOSITION, SURFACE PROTECTIVE INTERMEDIATE BASE AND FIBER-REINFORCED COMPOSITE MATERIAL INTERMEDIATE

• Main Authors: SAKATA HIROAKI, TAKEDA ICHIRO, MACHIDA GIMPEI
• Format: Patent
• Language: English; Japanese
• Published: 12.10.2022
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING-UP

To provide a surface protective material capable of protecting a prepreg surface that is rich in UV resistance and becomes a host material, capable of preventing inconvenience during coating by preventing deterioration due to UV of a fiber-reinforced composite material, capable of controlling a resin flow, and less in a volatilization amount during curing.SOLUTION: An epoxy resin composition contains constituent elements [A] to [F] in the following amounts with respect to 100 pts.mass of a total epoxy resin. [A] 90 to 100 pts.mass of non-aromatic epoxy resin, [B] 0.05 to 75 pts.mass of pigment having an average particle size of 0.1 to 10 μm, [C] 0.05 to 100 pts.mass of non-aromatic thermoplastic resin, [D] 50 to 200 pts.mass of non-aromatic acid anhydride, [E] 0.1 to 10 pts.mass of a curing accelerator, and [F] 0.1 to 20 pts.mass of a thixotropy imparting agent.SELECTED DRAWING: None 【課題】耐ＵＶ性に富み、母材となるプリプレグ表面を保護することが可能であり、繊維強化複合材料のＵＶによる劣化を防止し塗装時の不具合を防止することができ、なおかつ、樹脂フローの制御が可能であり、硬化時の揮発量が少ない表面保護材料を提供する。【解決手段】構成要素［Ａ］～［Ｆ］を、全エポキシ樹脂１００質量部に対してそれぞれ下記の量含む、エポキシ樹脂組成物。［Ａ］非芳香族エポキシ樹脂 ９０～１００質量部［Ｂ］平均粒径０．１～１０μｍの顔料 ０．０５～７５質量部［Ｃ］非芳香族熱可塑性樹脂 ０．０５～１００質量部［Ｄ］非芳香族酸無水物 ５０～２００質量部［Ｅ］硬化促進剤 ０．１～１０質量部［Ｆ］チキソトロピー性付与剤 ０．１～２０質量部【選択図】なし