ELECTRIC VEHICLES | COMPOUNDS
Right: Cooper Standard’s Plasticool lightweight tubing system uses Zytel PA 612 from Celanese
can become much more apparent and can be distracting for the driver. Involving both vehicle safety and passenger comfort, engineers can often find it extremely difficult to pinpoint a single part or component at the root of the noise. Polyamide-specialist Ascend Performance
Materials has focused on this challenge with Vydyne AVS, a new engineered material effective at damping high-frequency vibrations from sources such as motors and compressors. It claims this can translate into an 80% reduction in cabin sound pressure. One of the applications where Vydyne AVS is
currently being used is in the Cadillac Lyriq, which was dubbed ‘the quietest car I can remember driving’ by one motoring journalist. The car sports an electric AC compressor mounting bracket made of Vydyne AVS, which effectively dampens that component’s vibrations at source while also providing structural support.
Another company aiming to meet these chal- lenges head on is Celanese, which recently completed its acquisition of much of the DuPont engineering plastics business, including its Zytel PA
portfolio. Zytel NVH70G35HSLA2 is the first addition to the Zytel NVH Gen 2 product family. The PA66-based, 35% glass-filled polymer offers high damping, yet keeps its base polymer’s robust structural properties for parts that require sustained mechanical strength. “This new Zytel grade takes a different approach to high-frequency vibration isolation by utilising the material’s structural damping ability without sacrificing extended fatigue resistance over time,” says Gabe Knee, Automotive Market Manager at Celanese. “We’ve created a cost-efficient, mass- saving, and tunable solution for electric drive units that mitigates NVH problems in electric vehicles, making them even quieter and more comfortable.” New developments in polymer compounds for EVs was a main focus at the 51st Annual Society of Plastics Engineers (SPE) Automotive Innovation Awards Competition in November last year, where the team from the Engineered Materials business of Celanese had a memorable evening with its thermoplastics customers named as winners in two different categories.
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IMAGE: CELANESE
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