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Master Bond adhesives

Park Aerospace Nelcote® E-720 Epoxy Prepreg, 7781 E-Glass Reinforced
Categories: Polymer; Thermoset; Epoxy

Material Notes: Nelcote® E-720 is a modified epoxy resin system designed to retain excellent mechanical properties after extended exposure to high temperature. E-720 has a proven history in many demanding aerospace applications.

Key Features and Benefits:

  • Excellent retention of mechanical properties after long-term high temperature exposure
  • Long out-time for easy processing
  • Good electrical properties

Applications/Qualifications:

  • Secondary Aircraft Structures
  • Radomes
  • Nacelles
  • Inlet Ducts
  • Fairings

Information provided by Park Electrochemical Corp.

Key Words: EP
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Volatiles <= 2.0 %
@Temperature 135 °C
<= 2.0 %
@Temperature 275 °F
 
Mechanical PropertiesMetricEnglishComments
Hardness, Barcol 8080
Tensile Strength, Yield  310 MPa
@Temperature 216 °C
45000 psi
@Temperature 420 °F
0° Direction, Dry; ASTM D638
 310 MPa
@Temperature 260 °C
45000 psi
@Temperature 500 °F
0° Direction, Dry; ASTM D638
 345 MPa
@Temperature 177 °C
50000 psi
@Temperature 350 °F
0° Direction, Dry; ASTM D638
 414 MPa
@Temperature 23.9 °C
60000 psi
@Temperature 75.0 °F
0° Direction, Dry; ASTM D638
Flexural Strength  207 MPa
@Temperature 260 °C
30000 psi
@Temperature 500 °F
Dry; ASTM D790
 345 MPa
@Temperature 216 °C
50000 psi
@Temperature 420 °F
Dry; ASTM D790
 414 MPa
@Temperature 177 °C
60000 psi
@Temperature 350 °F
Dry; ASTM D790
 586 MPa
@Temperature 23.9 °C
85000 psi
@Temperature 75.0 °F
Dry; ASTM D790
Flexural Modulus  16.5 GPa
@Temperature 260 °C
2400 ksi
@Temperature 500 °F
Dry; ASTM D790
 19.3 GPa
@Temperature 216 °C
2800 ksi
@Temperature 420 °F
Dry; ASTM D790
 20.0 GPa
@Temperature 177 °C
2900 ksi
@Temperature 350 °F
Dry; ASTM D790
 23.4 GPa
@Temperature 23.9 °C
3400 ksi
@Temperature 75.0 °F
Dry; ASTM D790
Compressive Strength  310 MPa
@Temperature 260 °C
45000 psi
@Temperature 500 °F
Dry; ASTM D695
 359 MPa
@Temperature 177 °C
52000 psi
@Temperature 350 °F
Dry; ASTM D695
 359 MPa
@Temperature 216 °C
52000 psi
@Temperature 420 °F
Dry; ASTM D695
 414 MPa
@Temperature 23.9 °C
60000 psi
@Temperature 75.0 °F
Dry; ASTM D695
Shear Strength  33.1 MPa
@Temperature 177 °C
4800 psi
@Temperature 350 °F
Short-Beam, Dry; ASTM D2344
 46.2 MPa
@Temperature 23.9 °C
6700 psi
@Temperature 75.0 °F
Short-Beam, Dry; ASTM D2344
 
Electrical PropertiesMetricEnglishComments
Dielectric Constant 4.24.2
Dissipation Factor 0.0150.015
 
Thermal PropertiesMetricEnglishComments
Glass Transition Temp, Tg 180 °C356 °FLaminate; standard cure
 230 °C446 °FLaminate; post cure
 
Processing PropertiesMetricEnglishComments
Gel Time 1.00 - 2.00 min1.00 - 2.00 min
Shelf Life 12.0 Month
@Temperature -17.8 °C
12.0 Month
@Temperature 0.000 °F
 
Descriptive Properties
Fabric Area Weight (g/m²)300
Prepreg Resin Content (%)33-37
Resin Flow (%)10-24325°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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PPARK005 / 89277

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