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Ensinger PEI

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Park Aerospace Nelcote® V-376 Cyanate Ester Epoxy Prepregs, 4503 Quartz Reinforced
Categories: Polymer; Thermoset; Epoxy

Material Notes: Nelcote® V-376 is a Cyanate Ester matrix providing excellent electrical and mechanical properties for harsh aircraft, shipboard, and undersea applications for Radomes, Antenna, and Reflectors. Simple processing and good handling characteristics make V-376 an ideal alternative to BMI and polyimide resin systems. GC110 LM qualified specifications.

Key Features and Benefits:

  • Cyanate Ester resin provides outstanding electrical properties (Dk, Df)
  • Excellent Moisture resistance properties
  • Simplified handling and processing characteristics
  • Minimal degradation of mechanical properties in Hot/Wet environments
  • Self-Adhesive to many types of foam and honeycomb core

Applications/Qualifications:

  • Radomes
  • Reflectors
  • Antenna
  • Signature Control

Information provided by Park Electrochemical Corp.

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Physical PropertiesOriginal ValueComments
Volatiles <= 1.5 %
Water Absorption 0.67 %by weight; 14 day soak at 160°F
Thickness 0.0100 milcured laminate, per ply
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength, Yield 71000 psi
@Temperature 149 °C
0° Direction, Wet; ASTM D638
 96000 psi
@Temperature 23.9 °C
0° Direction, Dry; ASTM D638
Tensile Modulus 3300 ksi
@Temperature 149 °C
Wet; ASTM D638
 3600 ksi
@Temperature 23.9 °C
Dry; ASTM D638
Flexural Strength 103 ksi
@Temperature 23.9 °C
0° Direction, Dry; ASTM D790
Flexural Modulus 3400 ksi
@Temperature 23.9 °C
0° Direction, Dry; ASTM D790
Compressive Strength 46.0 ksi
@Temperature 149 °C
Wet; ASTM D695
 58.0 ksi
@Temperature 149 °C
Dry; ASTM D695
 69.0 ksi
@Temperature 23.9 °C
Dry; ASTM D695
Compressive Modulus 3600 ksi
@Temperature 23.9 °C
Dry; ASTM D695
 3600 ksi
@Temperature 149 °C
Wet; ASTM D695
 3700 ksi
@Temperature 149 °C
Dry; ASTM D695
Shear Strength 9.20 ksi
@Temperature 23.9 °C
Short Beam; Dry; ASTM D2344
 
Electrical PropertiesOriginal ValueComments
Dielectric Constant 3.3
@Frequency 9.375e+9 Hz
Dissipation Factor 0.0070
@Frequency 9.375e+9 Hz
 
Thermal PropertiesOriginal ValueComments
CTE, linear 28.9 µin/in-°FZ-Axis
Glass Transition Temp, Tg 148 °CDMA; without post-cure
 178 °CDMA; with post-cure
 
Processing PropertiesOriginal ValueComments
Gel Time 3.00 - 30.0 min
@Temperature 135 °C
Shelf Life 12.0 Month
@Temperature -17.8 °C
 
Descriptive Properties
Fabric Area Weight (g/m²)112
Resin Flow (%)13-33325°F, 50psi
Resin Solids Content (%)35-41

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