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Park Electrochemical Nelcote® E-746 Epoxy Prepreg, 7781 E-Glass Reinforced

Category Polymer , Thermoset , Epoxy
Manufacturer Park Electrochemical Corp.
Trade Name Nelcote®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Park Electrochemical Nelcote® E-746 Epoxy Prepreg, 7781 E-Glass Reinforced.pdf
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Material Notes:
Nelcote® E-746 is a modified epoxy resin system designed to retain excellent mechanical properties after extended exposure to high temperature. E-746 has a proven history in many demanding aerospace applications. Key Features and Benefits:Excellent retention of mechanical properties after long-term high temperature exposureSoft tack and drape propertiesLong ambient out-time for maximum process flexibilityGood electrical properties for RF applicationsMeets requirements of MIL-R-9300B Type IIApplications/Qualifications:Secondary Aircraft StructuresRadomesNacellesInlet DuctsFairingsMeets SS9578 and GMS4001 specifications.Information provided by Park Electrochemical Corp.
Physical Properties Metric English Comments
Volatiles <= 2.0 %

@Temperature 163 °C
<= 2.0 %

@Temperature 325 °F
Mechanical Properties Metric English Comments
Tensile Strength, Yield 310 MPa

@Temperature 177 °C
45000 psi

@Temperature 350 °F
0° Direction, Dry, Autoclave; ASTM D638
310 MPa

@Temperature 216 °C
45000 psi

@Temperature 420 °F
0° Direction, Dry, Autoclave; ASTM D638
310 MPa

@Temperature 260 °C
45000 psi

@Temperature 500 °F
0° Direction, Dry, Autoclave; ASTM D638
345 MPa

@Temperature 138 °C
50000 psi

@Temperature 280 °F
0° Direction, Dry, Autoclave; ASTM D638
448 MPa

@Temperature 23.9 °C
65000 psi

@Temperature 75.0 °F
0° Direction, Dry, Autoclave; ASTM D638
Flexural Strength 138 MPa

@Temperature 260 °C
20000 psi

@Temperature 500 °F
Dry, Autoclave; ASTM D790
207 MPa

@Temperature 216 °C
30000 psi

@Temperature 420 °F
Dry, Autoclave; ASTM D790
276 MPa

@Temperature 177 °C
40000 psi

@Temperature 350 °F
Dry, Autoclave; ASTM D790
517 MPa

@Temperature 138 °C
75000 psi

@Temperature 280 °F
Dry, Autoclave; ASTM D790
621 MPa

@Temperature 23.9 °C
90000 psi

@Temperature 75.0 °F
Dry, Autoclave; ASTM D790
Compressive Strength 345 MPa

@Temperature 138 °C
50000 psi

@Temperature 280 °F
Dry, Autoclave; ASTM D695
517 MPa

@Temperature 23.9 °C
75000 psi

@Temperature 75.0 °F
Dry, Autoclave; ASTM D695
Shear Strength 20.7 MPa

@Temperature 177 °C
3000 psi

@Temperature 350 °F
Short-Beam, Dry, Autoclave; ASTM D2344
47.6 MPa

@Temperature 23.9 °C
6900 psi

@Temperature 75.0 °F
Short-Beam, Dry, Autoclave; 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

@Frequency 9.375e+9 Hz
4.2

@Frequency 9.375e+9 Hz
Dissipation Factor 0.016

@Frequency 9.375e+9 Hz
0.016

@Frequency 9.375e+9 Hz
Processing Properties Metric English Comments
Gel Time 1.00 - 3.00 min
1.00 - 3.00 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 (%) 34-40
Resin Flow (%) 7-21
325°F, 50psi
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