Improve the thermal properties of a broad range of base polymers.
By addition of thermally conductive additives like graphite, carbon fibres and ceramic fillers.
Also available in combination with improved mechanical properties, electrical properties and lubricating properties.
The addition of thermally conductive additives to base polymers improves the thermal conductivity (measured in Watts per meter Kelvin, W/mK) of these materials by a factor of 5 to 100 times. Witcom thermally conductive compounds can for example be used in moving counterparts, motor parts, cooling systems, lighting and electronic devices. In these so called thermal management applications hotspots and temperature gradients across the product have to be eliminated. Through the improved heat dissipation from the surface area of the product the addition of thermally conductive additives to base polymers enhance the lifetime of the product.
Thermally conductive compounds have the attractive advantage over metals in that their processability is much easier. This provides more design flexibility allowing a greater product surface and integrated part possibilities. Next to this thermally conductive compounds have the advantage over metals in that they have a lower density resulting in a considerable cost reduction when used in these product applications.
When added to electrically conductive compounds thermally conductive additives also enhance the electrical efficiency of the product. This because due to the improved heat dissipation from the surface area of the product the temperature in the product is lower and therefore a higher electric current can pass through the product.
To compare the different heat conductivity values (K-values) of different materials these are mentioned in the table below.
