TECHNOLOGY | THERMALLY CONDUCTIVE COMPOUNDS
electrically conductive and electrical insulating grades: electrically conductive grades offer thermal conductivity up to 16 W/m.K in-plane and are black; electrically insulating grades offer a lower thermal conductivity and are white. All grades are said to exhibit very good flow. The company highlights Makrolon TC110 and Makrolon TC210, which provide good radio frequency (RF) signal transmission stability and toughness. Makrolon TC611 and TC8030 grades offer the highest thermal conductivity and are said to be good corrosion-resistant materials for thermal management in LED luminaires where they can halve weight compared to aluminium.
Above: A thermally conductive polycarbonate from Covestro is used to manage heat in this next- generation EV charging station
glass fibre, where necessary, to improve strength. They can be tailored to meet specific thermal and mechanical requirements.
Light opportunities “The automotive lighting segment is experiencing significant innovation around current LED solutions,” says a SABIC spokesperson. “At a time when space is at a growing premium due to integration of sensor suite components and while heat sinks are increasing in size, future iterations of lighting must consider novel ways to dissipate heat at a competitive cost. LNP Konduit compounds are a cost-effective, resource-efficient heat sink solution that can contribute to the scaling of LEDs.” Makrolon TC thermally conductive polycarbonates from Covestro are available with different levels of conductivity in grades for injection moulding (including over-moulding), extrusion, and 3D printing. The portfolio includes
Battery power Covestro sees considerable potential for Makrolon TC compounds in battery thermal management. The company says some battery makers are already using Makrolon TC 110 and its flame retarded version for this purpose, where polycarbonate offers the required impact strength, dimensional accuracy and stability, and long-term service temperature. The Durethan TC (Thermally Conductive) range
of thermally conductive PA compounds from Lanxess was recently expanded with three new products based on PA6. Two were previously available as trial products: Durethan BTC67ZH3.0EF (previously Durethan TP430-004) and Durethan BTC77ZH3.0EF (Durethan TP430- 003). The third, Durethan BTC965FM30, is a flame retardant addition. The first two are said to be characterised by significantly higher impact resistance and greater
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IMAGE: COVESTRO
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