This new generation epoxy prepreg for airframe primary structures and engines expands the performance boundaries for epoxy prepreg, meeting the ever growing needs of aerospace OEMs to manufacture lighter, faster and more efficient aircraft.
HexPly® M91 demonstrates excellent toughness, including very high residual compression after impact (CAI). Also improved tensile performance in combination with Intermediate Modulus (IM) and High Strength (AS) HexTow® fibers; achieving outstanding performance in combination with Hexcel’s new HexTow® IM10 fiber. Good hot-wet properties up to 120°C (250°F) are also obtained. HexPly® M91 is supplied as UD tape and has been designed specifically for automated processing and is particularly suited for both automated tape laying (ATL) and advanced fiber placement (AFP). Good tack life and out-life provide flexibility during processing on the shop floor and low exotherm behavior allows simple cure cycles of thick monolithic structures up to 70mm (2.76”).