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    • 3. 发明授权
    • Two part, reinforced, room temperature curable thermosetting epoxy resin compositions with improved adhesive strength and fracture toughness
    • 两部分,增强的室温固化型热固性环氧树脂组合物,具有改善的粘合强度和断裂韧性
    • US06248204B1
    • 2001-06-19
    • US09312147
    • 1999-05-14
    • Charles F. Schuft
    • Charles F. Schuft
    • C08G5950
    • C09J5/00C08G59/50C08L63/00C08L2666/54C09J163/00C09J2463/00
    • The present invention provides a room-temperature curable, reinforced thermosetting epoxy resin composition. The composition includes an epoxy resin first component, and an epoxy resin hardener second component. The epoxy resin component includes an epoxy resin, and may further include an inorganic and/or organic filler component, such as a structural reinforcement component. The epoxy resin hardener component includes an amine-based hardener, and may further include an inorganic and/or organic filler component. Cured reaction products of the composition demonstrate at about room temperature an adhesive strength of at least about 6500 psi, such as about 8000 to about 10000, and a fracture toughness of at least about 10 in-lbs/in2, such as about 20 to about 35 in-lbs/in2. In addition, the cured reaction products of the composition demonstrate a creep resistance at about room temperature at least about 6000 psi of at least about 1 hour. After mixing together the first and second components and at about room temperature, the composition has a pot life of at least about 3 hours at about room temperature, and after application onto a surface of a substrate has a slump resistance at about 30 minutes of less than about 0.5 inches.
    • 本发明提供一种室温可固化的增强的热固性环氧树脂组合物。 该组合物包括环氧树脂第一组分和环氧树脂硬化剂第二组分。 环氧树脂组分包括环氧树脂,并且还可以包括无机和/或有机填料组分,例如结构增强组分。 环氧树脂固化剂组分包括胺类固化剂,并且还可以包括无机和/或有机填料组分。 组合物的固化反应产物在约室温下表现出至少约6500psi,例如约8000至约10000的粘合强度和至少约10inbs / in2的断裂韧性,例如约20至约 35 in-lbs / in2。 此外,组合物的固化反应产物在约室温下表现出至少约6000psi至少约1小时的抗蠕变性。 在第一组分和第二组分混合在一起之后,在约室温下,该组合物在大约室温下具有至少约3小时的适用期,并且在施加到基材表面上之后,在约30分钟时具有较低的坍落度 大约0.5英寸。