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Ensinger PEI

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Park Aerospace Nelcote® E-752 Epoxy Prepreg, 12K PW HTS Reinforced
Categories: Polymer; Thermoset; Epoxy

Material Notes: Nelcote® E-752 is a toughened, 185°C cure epoxy system designed for demanding structural applications up to 130°C. E-752 offers a good balance of toughness, high service temperature and good moisture resistance, as well as excellent tack and drape. Formulated for both oven and autoclave cure, E-752 provides for easy processing with oven cure, without sacrificing mechanical properties.

Key Features and Benefits:

  • Specifically designed to allow both oven cure and autoclave cure
    • Allows oven curing without sacrificing mechanical properties
  • Service temperatures up to 130°C
  • Controlled flow for ease of processing
  • Flexible cure temperature 132°C to 185°C
    • Good mechanical properties can be achieved through oven curing at 132°C, followed by post-cure at 185°C
  • Self-adhesive grade for sandwich panel applications

Applications/Qualifications:

  • Primary and Secondary Aircraft Structures
  • Ducting
  • Fairings
  • Nacelles

Information provided by Park Electrochemical Corp.

Key Words: EP
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Physical PropertiesOriginal ValueComments
Volatiles <= 1.0 %
@Temperature 135 °C
8 min
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength, Yield 129100 psi
@Temperature 23.9 °C
0° Direction, Dry, 365° Oven Cured; ASTM D3039
Tensile Modulus 9400 ksi
@Temperature 23.9 °C
0° Direction, Dry, 365° Oven Cured; ASTM D3039
Compressive Strength 43.2 ksi
@Temperature 23.9 °C
Open-Hole, Dry, 365°F Oven Cured; ASTM D6484
 93.0 ksi
@Temperature 121 °C
Dry, 365° Oven Cured; SACMA 1R-94
 117 ksi
@Temperature 23.9 °C
Dry, 365° Oven Cured; SACMA 1R-94
Compressive Modulus 5800 ksi
@Temperature 23.9 °C
Open-Hole, Dry, 365°F Oven Cured; ASTM D6484
 8500 ksi
@Temperature 121 °C
Dry, 365° Oven Cured; SACMA 1R-94
 8700 ksi
@Temperature 23.9 °C
Dry, 365° Oven Cured; SACMA 1R-94
Shear Modulus 370 ksi
@Temperature 121 °C
In-Plane, Wet, 365° Oven Cured; ASTM D3518
 520 ksi
@Temperature 121 °C
In-Plane, Dry, 365° Oven Cured; ASTM D3518
 670 ksi
@Temperature 23.9 °C
In-Plane, Dry, 365° Oven Cured; ASTM D3518
Shear Strength 11.4 ksi
@Temperature 23.9 °C
In-Plane, Dry, 365° Oven Cured; ASTM D3518
 12.5 ksi
@Temperature 121 °C
In-Plane, Dry, 365° Oven Cured; ASTM D3518
 
Thermal PropertiesOriginal ValueComments
Glass Transition Temp, Tg 170 °CWet; DMA
 190 °CDry; DMA
 
Processing PropertiesOriginal ValueComments
Gel Time 5.00 - 12.0 min
Shelf Life 12.0 Month
@Temperature -17.8 °C
 
Descriptive Properties
Fabric Area Weight (g/m²)378
Prepreg Resin Content (%)35-43

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