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12. March 2010

Increased heat resistance for air induction systems

To meet the increasing temperature extremes for air induction system ducting, Zeon has introduced Zeotherm 131-90B.

This TPV is targeted for clean air intake ducts, charge air cooler (CAC) ducts, and crankcase ventilation (EGR/PCV) components. The Japanese company said that it is ideally suited for use on turbo diesel, turbo gas, and super­charged vehicles where temperature extremes of 140°C and higher are common.

Extensive testing showed that it is able to withstand more than 2,000h continuous exposure to 135°C, while still retaining its flexibility with only a minimal loss of mechanical properties. For applications demanding performance above 150°C, Zeotherm 131-90B is capable of withstanding 175°C extremes for one week (168h) exposure and short-term exposure to 190°C.

To address European OEM requirements for oil and oil vapour contact to ducting components, further testing by Zeon has shown Zeotherm 131-90B to withstand oil exposure cycling testing from 150–175°C using OE factory-fill oils.

The use of Zeotherm enables improved heat resistance compared to copolyester (TEEE), improved flexibility and sealing compared to soft polyamides, and reduced weight and part cost compared to components made from ethylene-acrylic rubber (AEM). It is processable via blow moulding and injection moulding.

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