CPE Datasheet, PDF (1/2 Pages) Laird Tech Smart Technology – Low dielectric loss

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Eccostock®CPE
Cross-Linked Polyethylene Rod and Sheet Stock
CROSS-LINKED POLYETHYLENE STOCK
Eccostock CPE is a cross-linked polyethylene rod and sheet stock. The material is
thermosetting. It will not flow even when subjected to excessive and prolonged heat. The
surface may darken with no effect on the bulk properties of the material. Physical properties
of Eccostock CPE are similar to those of polyethylene at room temperature. It can be used as
a direct substitute for polytetrafluoroethylene with a consequent weight and cost savings.
FEATURES AND BENEFITS
• Low dielectric loss
• Excellent machinability
• Good mechanical properties
MARKETS
• Commercial Telecom
• Security and Defense
SPECIFICATIONS
TYPICAL PROPERTIES
Service Temperature °C (°F)
Density, g/cc
Dielectric Constant, 100 Hz to 10 GHz
Dissipation Factor, 100 Hz to 10GHz
Insulation Resistance, ohm-cm
Coefficient of Linear Expansion (cm/cm/°C)
Thermal Expansion, per °C (°F)
Tensile Strength, psi (kg/cm²)
Tensile Modulus, psi (kg/cm²)
Flexural Yield, psi (kg/cm²)
Flexural Modulus, psi (kg/cm²)
Water absorption, % gain in 24 hours at 25°C
Outgassing
(%TML) (%CVCM)*
ECCOSTOCK CPE
<204 (<400)
0.98
2.4
<0.0007
>10¹⁴
90 x 10^-6
10 x 10^-5 (5.6 x 10^-5)
2,600 (182)
40,000 (2,800)
5,400 (378)
500,000 (35,000)
<0.01
1.89/0.111
Data for design engineer guidance only. Observed performance varies in application.
Engineers are reminded to test the material in application.
* Outgassing data per ASTM E595-07; criteria for acceptability is 1.00% TML and 0.10% CVCM.
APPLICATIONS
• Eccostock CPE is used for insulators, cavity tuning probes, patch antennas, and dielectric
support pieces.
• Excellent machinability makes it a good choice for custom microwave transmission line
components.
• Ideal for structural applications due to good mechanical properties.