| Abbr |
Name |
|
Description |
| CFEP |
Cellular Fluorinated Ethylene/Propylene copolymer |
|
Cellular Fluorinated Propylene, expanded or "foam" FEP, consists of individual closed cells of inert gas suspended
in a Fluorinated Ethylene/Propylene medium, resulting in a desirable reduction of the dielectric constant. |
| CPE |
Cellular Polyethylene |
|
Cellular polyethylene, expanded or "foam" Polyethylene, consists of individual closed cells of inert gas suspended
in a Polyethylene medium, resulting in a desirable reduction of the dielectric constant. |
| EPDM |
Ethylene-propylene-diene elastomer) |
|
EPDM is a chemically cross-linked elastomer with excellent flexibility at high and low temperatures
(150° to -55°C). It has good insulation resistance and dielectric strength, as well as
excellent abrasion resistance and mechanical properties. EPDM also has better cut-through
resistance than Silicone rubber, which it replaces in some applications. |
| FEP |
Fluorinated Ethylene/Propylene copolymer |
|
This material has excellent electrical properties, temperature range and chemical resistance. It is
not suitable where subjected to nuclear radiation and does not have good high voltage characteristics.
FEP is extrudable in a manner similar to PVC and polyethylene. This means that long wire and cable
lengths are available. TFE is extrudable in a hydraulic ram type process. Lengths are limited due to
amount of material in the ram, thickness of the insulation, and preform size. TFE must be extruded over
a silver or nickel-coated wire. The nickel and silver-coated designs are rated 260°C and 200°C maximum,
respectively. |
|
Halar® |
|
Thermoplastic fluoropolymer material with excellent chemical resistance, electrical
properties, thermal characteristics, and impact resistance. The temperature rating is -70°C to 150°C. |
|
Neoprene |
|
The temperature range of this material can vary from -55°C to 90°C. The actual range would depend on the formulation used.
Neoprene is both oil-resistant and sunlightresistant, making it ideal for many outdoor applications. The most stable colors are Black, Dark Brown, and Gray. The electrical
properties are not as good as other insulation materials. Because of this, thicker insulation
should be used. Typical designs where this material is used are lead wire insulation and cable jackets. |
| PE |
Polyethylene (Solid and Foam) |
|
A very good insulation in terms of electrical properties. Low dielectric constant, a stable dielectric constant
over all frequencies, very high insulation resistance. In terms of flexibility, polyethylene can be rated stiff
to very hard, depending on molecular weight and density: low density being the most flexible, and high-density,
high-molecular weight formulation being very hard. Polyethylene also has an excellent moisture resistance rating.
Correct Brown and Black formulations have excellent weather resistance. The dielectric constant is 2.3 for
solid insulation and 1.64 for foam designs. Flame retardant formulations are available with dielectric constants
ranging from about 1.7 for foam flame retardant to 2.58 solid flame retardant polyethylene. |
|
Polymer Alloy |
|
Polymer Alloy is a plenum grade chloride-based jacketing material with low smoke and low flame
spread properties. Cables jacketed with Polymer Alloy meet the UL Standard 910, Plenum Cable Flame Test. |
| PP |
Polypropylene (Solid and Foam) |
|
Similar in electrical properties to polyethylene, this material is primarily used as an
insulation material. Typically, it is harder than polyethylene. This makes it suitable for
thin wall insulations. UL maximum temperature rating may be 60°C maximum. The dielectric constant
is 2.25 for solid and 1.55 for foam designs. |
| PU |
Polyurethane |
|
This material is used primarily as a cable jacket material. It has excellent oxidation, oil, and
ozone resistance. Some formations also have good flame resistance. It is a sturdy compound with
excellent properties, making it an ideal jacket material for retractile cords. |
| PVC |
Polyvinyl Chloride |
|
Sometimes referred to as vinyl. Extremely high or low temperature properties cannot be
found in one formulation. Certain formulations may have -55°C to 105°C rating. Other
common vinyls may have -20°C to 60°C. The many varieties of PVC also differ in flexibility
and electrical properties. The price range can vary accordingly. Typical dielectric constant
values can vary from 3.5 to 6.5. (FR-PVC - Fire Resistant Polyvinyl Chloride) |
| PVDF |
Polyvinylidene Fluordide |
| |
PVDF is a high-molecular-weight polymer with the predominant repeating unit ---CH2 ---CF2----.
It is a crystalline material with an extremely high melting point. PVDF is used on cables meeting
UL Standard 910, Plenum Cable Flame Test. |
|
Rubber |
| |
The description of rubber normally includes natural rubber and SBR compounds. Both of
these materials can be used for insulations and jackets. There are many formulations of these basic materials. Each formulation is for a specific application. Some formulations
are suitable for -55°C minimum, while others are suitable for 75°C maximum. |
|
Silicone |
| |
This is a very soft insulation which has a temperature range from -80°C to 200°C.
It has excellent electrical properties plus ozone resistance, low moisture absorption, weather resistance, and radiation resistance.
It typically has low mechanical strength and poor scuff resistance. |
|
Tefzel® |
| |
Fluorocopolymer thermoplastic material having excellent electrical properties, heat
resistance, chemical resistance, toughness, radiation resistance, and flame resistance. The temperature rating is -65°C to 150°C. |
