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November 04, 2021 12:44 PM

Grafe, Brüggemann develop ‘eOrange' color for nylons for EV components

Sarah Kominek
Sarah Kominek
Staff Reporter
Plastics News Staff
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    Orange_i.jpg
    Grafe Advanced Polymers GmbH

    The color, a pastel orange, is used to identify high-voltage, current-carrying, plastic sheath components on electric vehicles.

    Friedrichshafen, Germany — Blankenhain, Germany-based Grafe Advanced Polymers GmbH has co-developed a thermally stable eOrange RAL2003, a nylon color masterbatch for e-mobility components.

    The color, a pastel orange, is used to identify high-voltage, current-carrying, plastic sheath components on electric vehicles, Manfred Fischer, head of marketing, said in an interview at Fakuma 2021 in Friedrichshafen.

    "For high-voltage applications, it must be an orange so the mechanic can see it's dangerous," Fischer said.

    Developed together with Heilbronn, Germany-based L. Brüggemann GmbH & Co. KG, eOrange's typical applications include injection molded and extruded nylon components.

    Known by the trade name PA-Tekolen, it is based on "a combination of highly thermally stable dyes with special heat stabilizers … for polymers" that were developed by Brüggemann.

    "The orange is a little bit tricky because this color can, over a long period of time, turn from orange to brown," Fischer said.

    The masterbatch still retains its color, without darkening, even after 1,000 hours' service at 130° C (266° F).

    The color has a flexible rate of addition, which gives users better control than other commercially available compounds.

    Other possible applications include high-voltage connectors, insulation for high-voltage cables, cable conduits, charging sockets or fasteners for electric vehicles, while wiring harness clips are already in production.

    "We, like our long-standing partner Brüggemann, have been receiving increasing numbers of inquiries from the e-mobility sector for some time now," Lars Tonnecke, Grafe's head of sales, said in a news release. "That's why we started work on this joint project in late 2019."

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