CYCOM® 381 epoxy prepreg is an epoxy prepreg that offers a 250°F (121°C) curing system with high 180°F (82°C)/wet mechanical properties yet has the excellent fatigue and durability necessary for primary structure applications.

Features & Benefits:

• Excellent 180°F (82°C)/wet properties
• Service temperature to 220°F (104°C)
• Three- to four-fold increases in fatigue life compared to perhaps all conventional 250°F (121°C) curing epoxy prepregs. This increase is the result of a 10 – 15% higher strain endurance limit.
• Inherent toughness provides good durability and compression after impact performance
• Low moisture absorption
• Excellent for vacuum pressure/oven processing

• Primary and secondary structural aircraft parts requiring 180°F (82°C)/wet retention of properties and/or excellent fatigue behavior
• Components that require good durability and/or low processing temperatures
• Helicopter rotor blades
• Rotating or cycled components
• Co-cured aluminum assemblies/parts
• Doublers
• Propellers
• Composite repair

Information provided by Cytec, subsequently acquired by Solvay.