Park Aerospace Nelcote® E-722 Epoxy Prepreg, 7781 E-Glass Reinforced

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Park Aerospace Nelcote® E-722 Epoxy Prepreg, 7781 E-Glass Reinforced
Categories:	Polymer; Thermoset; Epoxy
Material Notes:	Nelcote® E-722 is a modified 350°F cure epoxy system with excellent processing characteristics for vacuum bag, press, and autoclave molding. Key Features and Benefits: Epoxy resin system optimized for use with woven aramid reinforcements Meets requirements of MIL-R-9300B, Type 1 Long out-time for easy processing Applications/Qualifications: Military Helicopters Engine Nacelles Work Platforms Doors Air Frames Information provided by Park Electrochemical Corp.
Key Words:	EP
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Physical Properties	Metric	English	Comments

Volatiles	<= 2.0 % @Temperature 135 °C	<= 2.0 % @Temperature 275 °F	8 min

Mechanical Properties	Metric	English	Comments
Tensile Strength, Yield	372 MPa @Temperature 23.9 °C	54000 psi @Temperature 75.0 °F	0° Direction, Dry; ASTM D638 Type 1
Tensile Modulus	20.7 GPa @Temperature 23.9 °C	3000 ksi @Temperature 75.0 °F	0° Direction, Dry; ASTM D638 Type 1
Flexural Strength	758 MPa @Temperature 23.9 °C	110000 psi @Temperature 75.0 °F	Dry; ASTM D790
Flexural Modulus	24.8 GPa @Temperature 23.9 °C	3600 ksi @Temperature 75.0 °F	Dry; ASTM D790
Compressive Strength	414 MPa @Temperature 23.9 °C	60000 psi @Temperature 75.0 °F	Dry; ASTM D695
Compressive Modulus	20.7 GPa @Temperature 23.9 °C	3000 ksi @Temperature 75.0 °F	Dry; ASTM D695
Shear Strength	46.9 MPa @Temperature 23.9 °C	6800 psi @Temperature 75.0 °F	Short-Beam, Dry; ASTM D2344

Processing Properties	Metric	English	Comments
Gel Time	1.00 - 2.50 min	1.00 - 2.50 min
Shelf Life	12.0 Month @Temperature -17.8 °C	12.0 Month @Temperature 0.000 °F

Descriptive Properties
Prepreg Resin Content (%)	35-40
Resin Flow (%)	7-21		325°F, 15psi

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PPARK007 / 89279

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