HexPly* M49 is a 120°C curing toughened epoxy matrix with good impact resistance suitable for use in performance cars. The matrix is highly tolerant to a wide variety of production techniques and equipment making it easy to process. Hexply* M49 is especially suitable for cosmetic applications (eg car interiors) ■ High Toughened epoxy ■ Good impact resistance ■ Self adhesive on Honeycomb ■ Good stability under UV ■ Autoclave or vacuum bag processing ■ Long shelf life and out life at room temperature ■ Excellent tack and drap Resin Matrix Properties Viscosity profile (heat up rate 2°C/min)

HexPly® M49 Prepreg Types Fibre Designation 3K high strength carbon 3K high strength carbon 6K high strength carbon 12K high strength carbon 6K high strength carbon 12K high strength carbon Plain weave Plain weave Nominal cure ply thickness (mm) M49 resin content by weight (%) Cured Prepreg Mechanical Properties (cured at 120°C in autoclave) Test Method Strength (Mpa) Modulus (Gpa) 0° Interlaminar Shear Strength (Mpa) Modulus (Gpa) 0° compression Results for cured prepregs at 55%fibre volume content.

120°C curing epoxy matrix Prepreg Curing Conditions For cosmetic parts it is recommended to use autoclave process rather than vacuum only. A typical autoclave cure cycle for a thin part is: (1) (2) (3) (4) (5) (6) (7) Apply the full vacuum (0.9 bar) Apply 7 bar gauge autoclave pressure Reduce vacuum to a safety value of 0.2 bar when the autoclave pressure reaches approximately 1 bar gauge Heat up at 1-3 °C/minute to 120°C Hold at 120°C for 60 minutes Cool at 2-5°c/min Vent autoclave pressure when the component reaches 60°Cor below. Temperature Vacuum Pressure Heat-up rates are dependent on component...

Product Data Prepreg Storage Life n Shelf Life: 12 months at -18°C (0°F) (from date of manufacture) Definitions: Shelf Life: The maximum storage life for HexPly® Prepreg, when stored continuously, in a closed moisture proof bag, at -18°C (0°F). To accurately establish the exact expiry date, consult the box label. The maximum accumulated time allowed at room temperature between removal from the freezer and cure. Storage Conditions HexPly® M49 prepregs should be stored as received in a cool dry place or in a refrigerator. After removal from refrigerator storage, prepreg should be allowed to reach...