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Park Electrochemical Nelcote® E-720 Epoxy Prepreg, 7781 E-Glass Reinforced

Category Polymer , Thermoset , Epoxy
Manufacturer Park Electrochemical Corp.
Trade Name Nelcote®
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Park Electrochemical Nelcote® E-720 Epoxy Prepreg, 7781 E-Glass Reinforced.pdf
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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 exposureLong out-time for easy processingGood electrical propertiesApplications/Qualifications:Secondary Aircraft StructuresRadomesNacellesInlet DuctsFairingsInformation provided by Park Electrochemical Corp.
Physical Properties Metric English Comments
Volatiles <= 2.0 %

@Temperature 135 °C
<= 2.0 %

@Temperature 275 °F
Mechanical Properties Metric English Comments
Hardness, Barcol 80
80
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
Thermal Properties Metric English Comments
Glass Transition Temp, Tg 180 °C
356 °F
Laminate; standard cure
230 °C
446 °F
Laminate; post cure
Electrical Properties Metric English Comments
Dielectric Constant 4.2
4.2
Dissipation Factor 0.015
0.015
Processing Properties Metric English Comments
Gel Time 1.00 - 2.00 min
1.00 - 2.00 min
Shelf Life 12.0 Month

@Temperature -17.8 °C
12.0 Month

@Temperature 0.000 °F
Descriptive Properties Value Comments
Fabric Area Weight (g/m²) 300
Prepreg Resin Content (%) 33-37
Resin Flow (%) 10-24
325°F, 50psi
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