140 C curing epoxy matrix Provisional Product Data HexPly® M47 is a toughened, self extinguishing 140°C curing epoxy resin matrix that has been developed for the performance car market. It exhibits good strength retention at elevated temperature, good processability and excellent surface finish. Its high Tg allows HexPly® M47 to be considered as an alternative to 180°C curing matrices when a lower curing temperature is required ■ Good tack and drape characteristics ■ Good toughness ■ Long shelf life and out life ■ Excellent surface finish ■ Good strength retention at high temperatures Resin Matrix Properties Viscosity profile (heat up rate 2°C/minute)

Cured Prepreg Properties (cured at 140°C) Woven Carbon Prepreg 42% resin weight with C193PW(HTA) - 193 g/m2 plain weave 3K HTA 49% fibre volume Property Test Method 0° Tensile Strength (MPa) Modulus (GPa) 0° Interlaminar Shear Strength (MPa) Test Temp Test Temp Unidirectional Carbon Prepreg 1947 - 38% resin weight with M46J 52.5% fibre volume or IM2-C 53% fibre volume Property Test Method 0° Tensile Strength (MPa) Modulus (GPa) 0° Interlaminar Shear Strength (MPa)

140°C curing epoxy matrix Comparison of 140°C and 120°C Cure Cycles HexPly® M47 matrix 38% resin weight with M46J 52.5% fibre volume - unidirectional prepreg Property Test Method 0° Interlaminar Shear Strength (MPa) Test Temp Prepreg Type Unidirectional Carbon Carbon 193g/m2 plain weave Fibre Resin Content (%) Layup Compression After Impact (MPa) @ 6.67 J/mm G1C (J/m2) tested to CASA I+D-E 290 specification Curing Conditions 90 minutes at 120°C or 90 minutes at 140°C, 1 - 7 bar pressure. Heat up rate 1 - 2°C/minute. Curing at temperatures above 140°C does not further increase the glass transition...

HexPly® M47 Provisional Product Data The usual precautions when handling uncured synthetic resins and fine fibrous materials should be observed, and a Safety Data Sheet is available for this product. The use of clean disposable inert gloves provides protection for the operator and avoids contamination of material and components All information is believed to be accurate but is given without acceptance of liability. Users should make their own assessment of the suitability of any product for the purposes required. All sales are made subject to our standard terms of sale which include limitations...