HexPly® M26/M26T 120 °C (250 °F) curing epoxy matrix Product Data Description HexPly® M26 is an advance modified epoxy resin developed for aerospace and industrial markets.Its controlled flow, high peel strength on honeycomb cores and excellent fire behaviour give it a cost saving potential for interior and secondary sandwich structures. Combined with HexPly® M25 glass phenolic prepregs, it is qualified to Airbus specifications. Benefits and Features I 120 °C (250 °F) cure I Self-extinguishing to ABD0031 requirements I Self-adhesive on honeycomb and foam I Environmentally friendly I Controlled flow matrix I Low pressure moulding capability 0.8-3 bar (12-43 Psi) I Cure cycle versatility 100-150 °C (212-302 °F) I Good impact resistance I Compatible with HexPly® M25 phenolic resin system I Two grades available: - M26, reduced tack grade, for flat panels applications, - M26T, improved tack grade, for other sandwich structures.

HexPly® M26/M26T Product Data Resin Matrix Properties Rheology Cured Matrix Properties cured at 180 °C (350 °F) Method Glass transition temperature - Dry - Wet (saturation @ 70 °C/85%/RH) Cured density Enthaply ∆H Prepreg Curing Conditions The ideal cure cycle is 90 min at 125 °C (257 °F), at a pressure between 0.5 and 3 bar (7-43 Psi). Alternative cure cycles can be used. Heat up rate 0.5-10 °C (33-50 °F)/min Low temperature cure: 5 hours at 100 °C (212 °F) - Tg = 95 °C (203 °F) + post cure 1 hour at 150 °C (302 °F) to achieve a Tg of 120 °C (250 °F)

120 °C (250 °F) curing epoxy matrix Fire Properties Tests performed on 1 ply specimen of M26/45%/G1070 according to ABD0031. TEST METHOD Glow time Drip flame time Flaming mode AITM 3005 NBS toxicity Flaming mode Burn length AITM 2007 method B Flame time AITM 2002 60 sec vertical Vertical burning test Typical Mechanical Properties on HexPly® M26 prepregs Warp tensile strength MPa Warp tensile modulus GPa Warp tensile strength MPa Warp tensile modulus GPa Warp flexural strength MPa Warp flexural modulus GPa Warp flexural strength MPa Warp flexural modulus GPa Warp compression strength MP a Warp...

HexPly® M26/M26T Product Data Prepreg Storage Life I Tack Life I Guaranteed Shelf Life I Storage conditions HexPly® M26-M26T 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 room temperature before opening the polythene bag, thus preventing condensation (a full reel in its packaging can take up to 48 hours). Important 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...