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Park Electrochemical Nelcote® E-761 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-761 Epoxy Prepreg, 7781 E-Glass Reinforced.pdf
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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 processingSelf adhesive for honeycomb or foam sandwich laminates without the use of film adhesiveFlexible cure temperature 180°F to 250°FGood electrical propertiesFlame and fire retardant per FAR 25.853Wet service temperatures up to 160°FApplications/Qualifications:RadomesAircraft InteriorsSecondary Aircraft StructuresSandwich PanelsMRI ResonatorsWidely specified on commercial and military aircraft programsInformation provided by Park Electrochemical Corp.
Physical Properties Metric English Comments
Volatiles <= 1.5 %

@Temperature 135 °C
 <= 1.5 %

@Temperature 275 °F
 8 min
Thickness 229 microns
9.00 mil
Per Ply
Mechanical Properties Metric English Comments
Tensile Strength, Yield 3.79 - 4.78 MPa
549 - 693 psi
Flatwise (sandwich); Bag Surface
5.79 MPa
840 psi
Flatwise (sandwich); Mold Surface
324 MPa

@Temperature 93.3 °C
 47000 psi

@Temperature 200 °F
 0° Direction, Dry; ASTM D638
359 MPa

@Temperature 71.1 °C
 52000 psi

@Temperature 160 °F
 0° Direction, Wet; ASTM D638
407 MPa

@Temperature 21.1 °C
 59000 psi

@Temperature 70.0 °F
 0° Direction, Wet; ASTM D638
448 MPa

@Temperature 71.1 °C
 65000 psi

@Temperature 160 °F
 0° Direction, Dry; ASTM D638
496 MPa

@Temperature 21.1 °C
 72000 psi

@Temperature 70.0 °F
 0° Direction, Dry; ASTM D638
655 MPa

@Temperature -53.9 °C
 95000 psi

@Temperature -65.0 °F
 0° Direction, Dry; ASTM D638
Tensile Modulus 22.8 GPa

@Temperature 71.1 °C
 3300 ksi

@Temperature 160 °F
 0° Direction, Wet; ASTM D638
23.4 GPa

@Temperature 21.1 °C
 3400 ksi

@Temperature 70.0 °F
 0° Direction, Wet; ASTM D638
24.1 GPa

@Temperature -53.9 °C
 3500 ksi

@Temperature -65.0 °F
 0° Direction, Dry; ASTM D638
25.5 GPa

@Temperature 21.1 °C
 3700 ksi

@Temperature 70.0 °F
 0° Direction, Dry; ASTM D638
25.5 GPa

@Temperature 71.1 °C
 3700 ksi

@Temperature 160 °F
 0° Direction, Dry; ASTM D638
26.9 GPa

@Temperature 93.3 °C
 3900 ksi

@Temperature 200 °F
 0° Direction, Dry; ASTM D638
Flexural Strength 448 MPa

@Temperature 71.1 °C
 65000 psi

@Temperature 160 °F
 Wet; ASTM D790
455 MPa

@Temperature 93.3 °C
 66000 psi

@Temperature 200 °F
 Dry; ASTM D790
531 MPa

@Temperature 71.1 °C
 77000 psi

@Temperature 160 °F
 Dry; ASTM D790
552 MPa

@Temperature 21.1 °C
 80000 psi

@Temperature 70.0 °F
 Wet; ASTM D790
655 MPa

@Temperature 21.1 °C
 95000 psi

@Temperature 70.0 °F
 Dry; ASTM D790
807 MPa

@Temperature -53.9 °C
 117000 psi

@Temperature -65.0 °F
 Dry; ASTM D790
Flexural Modulus 18.6 GPa

@Temperature 71.1 °C
 2700 ksi

@Temperature 160 °F
 Wet; ASTM D790
19.3 GPa

@Temperature 93.3 °C
 2800 ksi

@Temperature 200 °F
 Dry; ASTM D790
20.0 GPa

@Temperature 71.1 °C
 2900 ksi

@Temperature 160 °F
 Dry; ASTM D790
20.7 GPa

@Temperature 21.1 °C
 3000 ksi

@Temperature 70.0 °F
 Wet; ASTM D790
22.1 GPa

@Temperature -53.9 °C
 3200 ksi

@Temperature -65.0 °F
 Dry; ASTM D790
22.1 GPa

@Temperature 21.1 °C
 3200 ksi

@Temperature 70.0 °F
 Dry; ASTM D790
Compressive Strength 324 MPa

@Temperature 71.1 °C
 47000 psi

@Temperature 160 °F
 Wet; ASTM D695
359 MPa

@Temperature 93.3 °C
 52000 psi

@Temperature 200 °F
 Dry; ASTM D695
379 MPa

@Temperature 71.1 °C
 55000 psi

@Temperature 160 °F
 Dry; ASTM D695
386 MPa

@Temperature 21.1 °C
 56000 psi

@Temperature 70.0 °F
 Wet; ASTM D695
455 MPa

@Temperature 21.1 °C
 66000 psi

@Temperature 70.0 °F
 Dry; ASTM D695
579 MPa

@Temperature -53.9 °C
 84000 psi

@Temperature -65.0 °F
 Dry; ASTM D695
Compressive Modulus 24.1 GPa

@Temperature 71.1 °C
 3500 ksi

@Temperature 160 °F
 Wet; ASTM D695
24.1 GPa

@Temperature 71.1 °C
 3500 ksi

@Temperature 160 °F
 Dry; ASTM D695
24.1 GPa

@Temperature 93.3 °C
 3500 ksi

@Temperature 200 °F
 Dry; ASTM D695
24.8 GPa

@Temperature 21.1 °C
 3600 ksi

@Temperature 70.0 °F
 Wet; ASTM D695
24.8 GPa

@Temperature 21.1 °C
 3600 ksi

@Temperature 70.0 °F
 Dry; ASTM D695
25.5 GPa

@Temperature -53.9 °C
 3700 ksi

@Temperature -65.0 °F
 Dry; ASTM D695
Shear Strength 35.9 MPa

@Temperature 93.3 °C
 5200 psi

@Temperature 200 °F
 Short-Beam, Dry; ASTM D2344
41.4 MPa

@Temperature 71.1 °C
 6000 psi

@Temperature 160 °F
 Short-Beam, Wet; ASTM D2344
44.8 MPa

@Temperature 71.1 °C
 6500 psi

@Temperature 160 °F
 Short-Beam, Dry; ASTM D2344
55.2 MPa

@Temperature 21.1 °C
 8000 psi

@Temperature 70.0 °F
 Short-Beam, Wet; ASTM D2344
62.1 MPa

@Temperature 21.1 °C
 9000 psi

@Temperature 70.0 °F
 Short-Beam, Dry; ASTM D2344
79.3 MPa

@Temperature -53.9 °C
 11500 psi

@Temperature -65.0 °F
 Short-Beam, Dry; ASTM D2344
Thermal Properties Metric English Comments
Glass Transition Temp, Tg 115 °C
239 °F
Dry; DMA
Electrical Properties Metric English Comments
Dielectric Constant 4.2

@Frequency 9.375e+9 Hz
 4.2

@Frequency 9.375e+9 Hz
4.2

@Frequency 1.80e+10 Hz
 4.2

@Frequency 1.80e+10 Hz
Dissipation Factor 0.013

@Frequency 9.375e+9 Hz
 0.013

@Frequency 9.375e+9 Hz
0.013

@Frequency 1.80e+10 Hz
 0.013

@Frequency 1.80e+10 Hz
Processing Properties Metric English Comments
Gel Time 4.00 min
4.00 min
Shelf Life 12.0 Month

@Temperature -17.8 °C
 12.0 Month

@Temperature 0.000 °F
Descriptive Properties Value Comments
Climbing Drum Peel (in-lb/3in) 14.7
ASTM D1781; Mold Surface, 75°F
14.8
ASTM D1781; Bag Surface, 75°F
Fabric Area Weight (g/m²) 303.5
Long Beam Flexure (P/Y lb/in) 152 / 124
Bag Surface
201
Mold Surface
Long Beam Flexure Strength (lbs) 157 / 130
Bag Surface
205
Mold Surface
Prepreg Resin Content (%) 39
Resin Flow (%) 14
275°F, 50psi
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