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Ensinger PEI

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Park Aerospace Nelcote® E-765 Epoxy Prepreg, T700 Uni Tape Reinforced
Categories: Polymer; Thermoset; Epoxy

Material Notes: Nelcote® E-765 is a tough 250°F cure prepreg system designed to replace 350°F cure systems in aircraft structural applications. FAA-approved Design Allowable Databases are available upon request.

Key Features and Benefits:

  • Designed to replace first generation 350°F (176°C) cure systems.
  • Wide cure temperature process window of 250°F to 350°F
  • Exhibits very low void content, i.e., <2% after vacuum cure.
  • Superior fiber property translation.
  • 180°F Wet service temperature after ~250°F cure
  • Good tack and drape characteristics for 3 weeks at room temperature

Applications/Qualifications:

  • Primary Aircraft Structures
    • Fuselage
    • Wing
    • Control Surfaces
  • Secondary Aircraft Structures
    • Aircraft Frames
    • Doors
    • Shelves
    • Bulkheads

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 PropertiesOriginal ValueComments
Volatiles <= 1.0 %
Thickness 6.00 milcured, per ply
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength, Yield 333000 psi
@Temperature 82.2 °C
0° Direction, Wet; Vacuum/Oven Cured; ASTM D3039-95
 349000 psi
@Temperature 82.2 °C
0° Direction, Dry; Vacuum/Oven Cured; ASTM D3039-95
 370000 psi
@Temperature -53.9 °C
0° Direction, Dry; Vacuum/Oven Cured; ASTM D3039-95
 370000 psi
@Temperature 21.1 °C
0° Direction, Dry; Vacuum/Oven Cured; ASTM D3039-95
Tensile Modulus 18200 ksi
@Temperature 82.2 °C
0° Direction, Dry; Vacuum/Oven Cured; ASTM D3039-95
 18600 ksi
@Temperature 82.2 °C
0° Direction, Wet; Vacuum/Oven Cured; ASTM D3039-95
 18700 ksi
@Temperature 21.1 °C
0° Direction, Dry; Vacuum/Oven Cured; ASTM D3039-95
 18800 ksi
@Temperature -53.9 °C
0° Direction, Dry; Vacuum/Oven Cured; ASTM D3039-95
Compressive Strength 107 ksi
@Temperature 82.2 °C
Wet; Vacuum/Oven Cured; SACMA 1-94
 177 ksi
@Temperature 82.2 °C
Dry; Vacuum/Oven Cured; SACMA 1-94
 180 ksi
@Temperature 21.1 °C
Dry; Vacuum/Oven Cured; SACMA 1-94
 211 ksi
@Temperature -53.9 °C
Dry; Vacuum/Oven Cured; SACMA 1-94
Compressive Modulus 17900 ksi
@Temperature -53.9 °C
Dry; Vacuum/Oven Cured; SACMA 1-94
 18000 ksi
@Temperature 82.2 °C
Wet; Vacuum/Oven Cured; SACMA 1-94
 18100 ksi
@Temperature 21.1 °C
Dry; Vacuum/Oven Cured; SACMA 1-94
 18400 ksi
@Temperature 82.2 °C
Dry; Vacuum/Oven Cured; SACMA 1-94
Shear Strength 5.70 ksi
@Temperature 82.2 °C
Short-Beam, Wet; Vacuum/Oven Cured; ASTM D2344
 9.40 ksi
@Temperature 82.2 °C
Short-Beam, Dry; Vacuum/Oven Cured; ASTM D2344
 10.7 ksi
@Temperature 82.2 °C
Beam, V-Notched; Wet; Vacuum/Oven Cured; ASTM D5379-93
 12.9 ksi
@Temperature 21.1 °C
Short-Beam, Dry; Vacuum/Oven Cured; ASTM D2344
 15.7 ksi
@Temperature 82.2 °C
Beam, V-Notched; Dry; Vacuum/Oven Cured; ASTM D5379-93
 17.4 ksi
@Temperature -53.9 °C
Short-Beam, Dry; Vacuum/Oven Cured; ASTM D2344
 20.0 ksi
@Temperature 21.1 °C
Beam, V-Notched; Dry; Vacuum/Oven Cured; ASTM D5379-93
 25.6 ksi
@Temperature -53.9 °C
Beam, V-Notched; Dry; Vacuum/Oven Cured; ASTM D5379-93
 
Thermal PropertiesOriginal ValueComments
Glass Transition Temp, Tg 165 °CDry; DMA
 
Processing PropertiesOriginal ValueComments
Gel Time 5.00 min
@Temperature 135 °C
Shelf Life 6.00 Month
@Temperature -17.8 °C
 
Descriptive Properties
Fabric Area Weight (g/m²)150
Prepreg Resin Content (%)32-38
Resin Flow (%)6-20275°F, 15psi
TackLight

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