Hexcel® HexPly® M81 Epoxy Resin Matrix

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Hexcel® HexPly® M81 Epoxy Resin Matrix
Categories:	Polymer; Thermoset; Epoxy
Material Notes:	Description: HexPly® M81 is a high performance tough epoxy matrix for use in industrial applications requiring good impact resistance and damage tolerance, such as the automotive industry. HexPly® M81 is based on the highly successful HexPly® 8552 toughened epoxy resin system, used widely around the world for the manufacture of aircraft structures. Non-aerospace customers now have the opportunity to benefit from the excellent performance of this resin system presented with reinforcements specially adapted for industrial markets. Benefits and Features Toughened epoxy matrix with excellent mechanical properties Elevated temperature performance (Tg up to 200°C) Versatile cure cycle (from 135°C to 180°C) Available on various reinforcements Excellent drape and tack Information provided by Hexcel Corporation.
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Physical Properties	Original Value	Comments

Density	1.30 g/cc
Viscosity	3.00e+6 cP @Temperature 65.0 °C	EN 6043-A, 2°C/min
	1.00e+9 cP @Temperature 5.00 °C	EN 6043-A, 2°C/min
	1.00e+10 cP @Temperature 85.0 °C	EN 6043-A, 2°C/min

Thermal Properties	Original Value	Comments
Glass Transition Temp, Tg	<= 140 °C	after ageing, Tg onset wet
	<= 200 °C	onset dry

Processing Properties	Original Value	Comments
Cure Time	1.00 hour @Temperature 170 °C
	2.00 hour @Temperature 135 °C
	2.00 hour @Temperature 150 °C
	2.00 hour @Temperature 180 °C
	3.00 hour @Temperature 135 °C
	3.00 hour @Temperature 135 °C
Gel Time	20.0 min @Temperature 177 °C	hot plate
	50.0 min @Temperature 145 °C	hot plate
	110 min @Temperature 130 °C	hot plate
Shelf Life	12.0 Month @Temperature -18.0 °C

Descriptive Properties
Color	Yellow

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PHEXCB9165 / 322321

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