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Park Aerospace Nelcote® P-670I Polyester Prepreg, 7781 E-Glass Reinforced
Categories: Polymer; Thermoset; Polyester, TS
Material Notes: Nelcote® P-670I is a versatile, non-styrenated/low VOC polyester resin. P670I is used in a wide variety of applications including radomes, tooling and aircraft structures.

Key Features and Benefits:

  • Non-styrenated / low VOC resin system
  • Meets requirements of MIL-R-7575C, grade B class 4
  • Flame retardant formulation
  • Good electrical properties at elevated temperatures
  • Retains good mechanical properties after exposure to high-temperature conditioning (250°F)

Applications/Qualifications:

  • Radomes
  • Tooling
  • Aircraft Structures

Information provided by Park Electrochemical Corp.
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 PropertiesMetricEnglishComments
Density 2.00 g/cc0.0723 lb/in³
Volatiles <= 2.0 %
@Temperature 104 °C		<= 2.0 %
@Temperature 220 °F		8 min
Water Absorption 0.68 %0.68 %24hr immersion in DI H20
 
Mechanical PropertiesMetricEnglishComments
Hardness, Barcol 7575
Tensile Strength, Yield  386 MPa
@Temperature 177 °C		56000 psi
@Temperature 350 °F		0° Direction, Wet; ASTM D638 Type 1
 414 MPa
@Temperature 23.9 °C		60000 psi
@Temperature 75.0 °F		0° Direction, Wet; ASTM D638 Type 1
 421 MPa
@Temperature 121 °C		61000 psi
@Temperature 250 °F		0° Direction, Wet; ASTM D638 Type 1
 483 MPa
@Temperature 23.9 °C		70000 psi
@Temperature 75.0 °F		0° Direction, Dry; ASTM D638 Type 1
Tensile Modulus  22.8 GPa
@Temperature 177 °C		3300 ksi
@Temperature 350 °F		0° Direction, Wet; ASTM D638 Type 1
 24.1 GPa
@Temperature 121 °C		3500 ksi
@Temperature 250 °F		0° Direction, Wet; ASTM D638 Type 1
 25.5 GPa
@Temperature 23.9 °C		3700 ksi
@Temperature 75.0 °F		0° Direction, Wet; ASTM D638 Type 1
 48.3 GPa
@Temperature 23.9 °C		7000 ksi
@Temperature 75.0 °F		0° Direction, Dry; ASTM D638 Type 1
Flexural Strength  248 MPa
@Temperature 177 °C		36000 psi
@Temperature 350 °F		Wet; ASTM D790
 393 MPa
@Temperature 121 °C		57000 psi
@Temperature 250 °F		Wet; ASTM D790
 545 MPa
@Temperature 23.9 °C		79000 psi
@Temperature 75.0 °F		Wet; ASTM D790
 600 MPa
@Temperature 23.9 °C		87000 psi
@Temperature 75.0 °F		Dry; ASTM D790
Flexural Modulus  18.6 GPa
@Temperature 177 °C		2700 ksi
@Temperature 350 °F		Wet; ASTM D790
 19.3 GPa
@Temperature 121 °C		2800 ksi
@Temperature 250 °F		Wet; ASTM D790
 22.1 GPa
@Temperature 23.9 °C		3200 ksi
@Temperature 75.0 °F		Dry; ASTM D790
 23.4 GPa
@Temperature 23.9 °C		3400 ksi
@Temperature 75.0 °F		Wet; ASTM D790
Compressive Strength  372 MPa
@Temperature 23.9 °C		54000 psi
@Temperature 75.0 °F		Wet; ASTM D695
 400 MPa
@Temperature 23.9 °C		58000 psi
@Temperature 75.0 °F		Dry; ASTM D695
 
Electrical PropertiesMetricEnglishComments
Dielectric Constant 4.8
@Frequency 9.375e+9 Hz		4.8
@Frequency 9.375e+9 Hz
Dissipation Factor 0.019
@Frequency 9.375e+9 Hz		0.019
@Frequency 9.375e+9 Hz
 
Thermal PropertiesMetricEnglishComments
Flammability Test 5.05.0inches; Method 2021
 
Processing PropertiesMetricEnglishComments
Gel Time 0.500 - 1.50 min0.500 - 1.50 min
Shelf Life  3.00 Month
@Temperature 4.44 °C		3.00 Month
@Temperature 40.0 °F
 6.00 Month
@Temperature -17.8 °C		6.00 Month
@Temperature 0.000 °F
 
Descriptive Properties
Fabric Area Weight (g/m²)300
Prepreg Resin Content (%)37-43
Resin Flow (%)8-12275°F, 15psi

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PPARK068 / 89340

Specialty Compounds RTP Company




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