CoolPoly D-series - Thermally Conductive Dielectric Plastics
CoolPoly® D-series Thermally Conductive Plastics exhibit electrical
isolation in addition to their thermal conductivity. Common plastics
are also electrical insulators. The electrical insulation property
of the material is measured as electrical resistivity and is
typically in the range 1012 to 1016 ohm-cm for both conventional
plastics and D-Series plastics. The thermal conductivity of CoolPoly
D-Series plastics enhances their electrical isolation and dielectric
properties beyond the range of conventional plastics.
Conventional plastics are considered thermal insulators. The thermal
conductivity of CoolPoly D-series thermally conductive plastics
range from 1.0 W/mK to 10 W/mK. This exceptional level of thermal
conductivity in a plastic is 5 to 100 times the value of
conventional plastics. The optimal level of thermal conductivity for
any application depends on the power input, size of the part and the
convection conditions. Celanese technical service staff can
help engineers determine the appropriate materials for their
application and heat transfer requirements.
CoolPoly D-series thermally conductive plastics surpass the
isolation and dielectric properties of conventional plastics. The
heat transfer inherent in CoolPoly D-series plastics reduces the
localized overheating due to electrical charging and retards the
formation of carbon tracking.
CoolPoly D-series plastics are characterized for their electrical
isolation and dielectric characteristics in addition to their
general thermal, mechanical and physical properties. Properties
measured include volume and surface resistivity, dielectric constant
and dissipation factor, dielectric strength, comparative tracking
index, arc resistance, hot wire ignition, high voltage arc tracking
rate, and high voltage arc resistance to ignition.
Common uses for CoolPoly D-series plastics include encapsulation of
wire wound and electromechanical devices, resistors, switches,
relays, sensors, and connectors.
CoolPoly D-series plastics combine the thermal conductivity and
electrical isolations in standard pellet form suitable for
thermoplastic injection molding and other processes (e.g.
extrusion). CoolPoly D-series plastics are available in bag, drum,
and Gaylord packaging.