Park Aerospace Nelcote® E-761 Epoxy Prepreg, Spectra® 951

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Park Aerospace Nelcote® E-761 Epoxy Prepreg, Spectra® 951 - PT Reinforced
Categories:	Polymer; Thermoset; Epoxy
Material Notes:	Nelcote® E-761 is a versatile self-adhesive epoxy matrix for use in aerospace and commercial application where ease of processing and cost are key considerations. Key Features and Benefits: Controlled flow for ease of processing Self adhesive for honeycomb or foam sandwich laminates without the use of film adhesive Flexible cure temperature 180°F to 250°F Good electrical properties Flame and fire retardant per FAR 25.853 Wet service temperatures up to 160°F Applications/Qualifications: Radomes Aircraft Interiors Secondary Aircraft Structures Sandwich Panels MRI Resonators Widely specified on commercial and military aircraft programs Information provided by Park Electrochemical Corp.
Key Words:	EP
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Physical Properties	Metric	English	Comments

Volatiles	<= 1.0 % @Temperature 135 °C	<= 1.0 % @Temperature 275 °F	8 min
Thickness	254 microns	10.0 mil	Per Ply

Mechanical Properties	Metric	English	Comments
Tensile Strength, Yield	448 MPa @Temperature 21.1 °C	65000 psi @Temperature 70.0 °F	0° Direction, Dry; ASTM D638
Flexural Strength	96.5 MPa @Temperature 21.1 °C	14000 psi @Temperature 70.0 °F	Dry; ASTM D790
Compressive Strength	34.5 MPa @Temperature 21.1 °C	5000 psi @Temperature 70.0 °F	Dry; ASTM D695
Compressive Modulus	26.9 GPa @Temperature 21.1 °C	3900 ksi @Temperature 70.0 °F	Dry; ASTM D695

Electrical Properties	Metric	English	Comments
Dielectric Constant	2.6 - 2.8 @Frequency 5.00e+9 - 1.80e+10 Hz	2.6 - 2.8 @Frequency 5.00e+9 - 1.80e+10 Hz
Dissipation Factor	0.0040 @Frequency 5.00e+9 - 1.80e+10 Hz	0.0040 @Frequency 5.00e+9 - 1.80e+10 Hz

Thermal Properties	Metric	English	Comments
Glass Transition Temp, Tg	115 °C	239 °F	Dry; DMA

Processing Properties	Metric	English	Comments
Gel Time	8.20 min	8.20 min
Shelf Life	12.0 Month @Temperature -17.8 °C	12.0 Month @Temperature 0.000 °F

Descriptive Properties
Fabric Area Weight (g/m²)	98.3
Prepreg Resin Content (%)	50
Resin Flow (%)	6		275°F, 50psi

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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PPARK026 / 89298

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