Products, Materials + Tools | Feb 11, 2014

Vossloh Schwabe Provides LED Heatsink Based on Thermoplastics from LATI

Lightweight, efficient, environmentally friendly, and cost-effective; above all, deeply innovative. - That is how the new heat sinks for LED lighting systems developed by Vossloh Schwabe using LATICONTHER® 62 GR/50, a specially designed material from LATI, could be described.

This PA6-based thermally conductive grade allows effective cooling of electronic components and LEDs thanks to a special graphite added to the compound in a quantity of 50% by weight, and featuring a structure that allows preferential heat transfer paths.

The base resin was chosen in cooperation with Vossloh Schwabe bearing in mind that the primary objective is the proper and smooth filling of mold cavities operating under non-extreme conversion conditions.

After molding process tuning, the geometry of the items was also fine-tuned to ensure high dimensional stability needed for a safe assembly of the radiating element on LED electronics and relevant lenses.
The collaboration between Vossloh Schwabe and LATI resulted in a family of heat sinks of various shapes, sizes and applications.

In fact, heat sinks made of thermally conductive resin are used in modular projects meant to replace conventional halogen or fluorescent lamps for public, corporate, commercial or domestic use (residential or furniture).

The shape and efficiency of the radiating system are carefully calibrated depending on the number of LEDs used and the power of the single device (up to 700 mA each).
Spotlights as well as real solutions designed for direct operation with 230V mains voltage are contained in the Vossloh Schwabe catalog.

The use of injection molded thermoconductive resins allows to obtain even very complex shapes and high dimensional accuracy, thus making the assembly process of finished product more efficient.

The chosen compound is among the most performant of the LATICONTHER® family due to a thermal conductivity of about 10 w/mK, of course lower than that of aluminum, but sufficient for a specially configured solution.

Processing conditions involve temperatures of molten polymer well below those of metal, longer life of the molds and almost no processing after the molding.
These factors allow to obtain an interesting solution not only from a technical point of view, but also in terms of economy and marketing.

The product catalogs and technical support from LATI and Vossloh Schwabe are also available on their respective internet portals.


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