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DOW™ Electrical & Telecommunications DFDA-7540 NT

Linear Low Density Polyethylene Insulation Compound

Supplied by The Dow Chemical Company

The technical datasheet with complete property values for DOW™ Electrical & Telecommunications DFDA-7540 NT is available to members of the Prospector Plastics Database.
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Product Description
DFDA-7540 NT is a linear low-density polyethylene (LLDPE) extrusion compound produced by the UNIPOL™ PE Process. It is a general purpose insulation that can be used as a high speed telephone singles insulation (air-core cable only; not recommended for jelly-filled cable) and high frequency coaxial inner skin. It combines excellent electrical properties with outstanding stress crack resistance.

Specifications:
DFDA-7540 NT meets the following raw material specifications:
  • ASTM D-1248 Type I Category 4, Grade E4, E5
  • Federal LP-390 C, II-L, Grade 3, Category 4
  • REA Specification PE-200, Appendix A
  • ISO 1872-PE
  • KHKN,18-D006

Cables insulated with DFDA-7540 NT using sound commercial extrusion practice, should meet the following industry cable specification:
  • ASTM: D 1351-02
  • EN-50290-2-23
  • IEC 60708
General  
Material Status 
  • Commercial: Active
Availability 
  • Africa & Middle East
  • Asia Pacific
  • Europe
  • Latin America
  • North America
Uses 
  • Communication Wire Insulation
  • Solid Insulation
  • Telecommunications
  • Wire & Cable Applications
 
Agency Ratings 
Forms 
  • Pellets
Physical
Nominal Value
Unit
Test Method
Density
g/cm³
ASTM D1505
Melt Mass-Flow Rate (MFR) (190°C/2.16 kg)
g/10 min
ASTM D1238
Environmental Stress-Cracking Resistance (10% Igepal, F0)
hr
ASTM D1693
Mechanical
Nominal Value
Unit
Test Method
Tensile Strength
psi
ASTM D638
Tensile Elongation (Break)
%
ASTM D638
Thermal
Nominal Value
Unit
Test Method
Brittleness Temperature
°F
ASTM D746
Electrical
Nominal Value
Unit
Test Method
Volume Resistivity (23°F)
ohm·cm
ASTM D257
Dielectric Strength 2 (0.125 in)
V/mil
ASTM D149
Dielectric Constant (1 Hz)
 
ASTM D1531
Dissipation Factor (1 Hz)
 
ASTM D1531
Related Terminology
Product names can be difficult to match. You may have searched any one of these terms to find this product: DOW™ Electrical & Telecommunications DFDA-7540 NT, DOW Electrical Telecommunications DFDA7540 NT, DOW™ Electrical & Telecommunications , DOW Electrical Telecommunications, DOWElectricalTelecommunicationsDFDA7540NT, DOWElectricalTelecommunications, DFDA, TelecommunicationsDFDA-7540 NT, TelecommunicationsDFDA7540 NT, TelecommunicationsDFDA:7540 NT, TelecommunicationsDFDA/7540 NT, TelecommunicationsDFDA+7540 NT, TelecommunicationsDFDA_7540 NT, TelecommunicationsDFDA 7540 NT, TelecommunicationsDFDA7540, TelecommunicationsDFDA, TelecommunicationsDFDA7540NT, DFDA-7540 NT, DFDA7540 NT, DFDA:7540 NT, DFDA/7540 NT, DFDA+7540 NT, DFDA_7540 NT, DFDA 7540 NT, DFDA7540, 7540NT, TelecommunicationsDFDA_7540NT, DFDA7540NT, DFDA_7540NT, Polyethylene, Linear Low Density, Polyethylene Linear Low Density, LLDPE, Polyethylene, PE, Dow, PolyethyleneLinearLowDensity, 7540DFDA, 7540TelecommunicationsDFDA
Uses
Uses may also be described by the following terms: Solid Insulation, Wire and Cable Applications, Wire & Cable Applications, Communication Wire Insulation.
Agency Ratings
This plastic material has 6 certifications from the following agencies (the number in parentheses shows the number of certifications for that agency): ASTM (2), REA (1), IEC (1), ISO (1), EN (1).
Extrusion
Nominal Value
Unit
 
Melt Temperature
°F
 
Extrusion Notes
DFDA-7540 NT provides excellent surface finish at high coating speeds. For optimum results, use melt extrusion temperatures in the suggested range of 400 to 425°F (204 to 220°C). However, specific recommendations for processing conditions can be determined only when the application and type of processing equipment are known.
Notes
1Typical properties: these are not to be construed as specifications.
2Method A (Short-Time)
 
IDES
Copyright © 2012 IDES
The information presented on this datasheet was acquired by IDES from the producer of the material. IDES makes substantial efforts to assure the accuracy of this data. However, IDES assumes no responsibility for the data values and strongly encourages that upon final material selection, data points are validated with the material supplier.