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12-03-2015

Arnite XL-T

New Lightweight LED Lighting Module

Royal DSM, the global Life Sciences and Material Sciences company, together with ZKW Group, a global provider of premium light systems for motor vehicles, announce the joint development of a new lightweight LED lighting module for Audi Q7 for which DSM's Arnite XL-T was used.

Audi Q7 with headlight LED/HID module construction in Arnite XL-T (figure: DSM)

Audi Q7 with headlight LED/HID module construction in Arnite XL-T (figure: DSM)

Headlights are a key distinguishing feature for a car’s identity and currently LED lighting, with its excellent performance characteristics, is the cutting edge of automotive headlamp design. They are also a safety critical item and must perform to highest international standards. LED, HID and Halogen lighting systems, often combined in one headlight assembly, offer excellent performance but also place more restrictions on the use of materials and design. Sunlight radiated into the multiple LED/HID lenses creates localized increases in thermal loadings in excess of 235 °C.

However, high sun loadings can cause heat distortion and outgassing of both functional and aesthetic components. To overcome this, exotic and expensive high performance polymers can be used or, alternatively, additional metal heat shields offer protection but add weight and cost as well as restricting design parameters. Arnite has been used successfully for many years in lighting and many other automotive electrical and electronic applications that demand high heat performance and low outgassing characteristics. Through extensive experience and application understanding, DSM has developed proprietary technology that has extended the thermal conductivity of Arnite XL-T to outperform high heat resistance thermoplastics such as polyether sulfon (PES), polyetherimides (PEI) and polyphthalamides (PPA) without the exotic price tag or other issues like critical processing and water absorption. A key benefit of Arnite XL-T is its outstanding surface finish when textured, even in glass fiber-reinforced grades/variations/options.

The superior performance of DSM’s Arnite XL-T with an heat deflection temperature (HDT) of 250 °C, low outgassing and excellent textured surface finish in dark colors, offer the designer and engineer extended freedom in headlight LED/HID module construction.

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DSM Engineering Plastics BV

Tel.: +31 46 4773270
Fax: +31 46 4770400

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