New Zeotherm grades
Zeon has extended its TPE product line with the addition of Zeotherm 110-70B and 131-90B. Both grades have been introduced at IRC 2009.
The 110-70B injection moulding type has been designed to achieve a lower cost than other 100-series grades in the Zeotherm TPE line. The company says, that analysis of typical parts have proven that the new product enables a significant reduction in part cost when compared to AEM rubber. Capable of continuous heat exposure to 140°C and excursions to 150°C, it offers resistance to automotive oils and greases.
In addition, it can be welded (hot-plate, spin) or overmoulded directly to polyamides. Compared to conventional TPE including those that are EPDM‑, polypropylene- or copolyesters, the new product offers better heat and oil resistance as well as adhesion to PA while retaining flexibility, says Zeon.
For applications requiring continuous exposure to 150°C and above, the Zeotherm 100-series and 131-series grades are recommended, which provide improved oil resistance and sealing performance, as well as withstanding repeated exposure to temperatures up to 175°C.
The 131-90B grade is designed to withstand the increasing temperature extremes for air induction system ducting. It is targeted for clean air intake ducts, charge air cooler (CAC) ducts, and crankcase ventilation (EGR/PCV) components. It is suited for use on turbo diesel, turbo gas, and supercharged vehicles where temperature of 140°C and higher are common.
It is able to withstand continuous exposure to 150°C, while still retaining its flexibility and 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.
Zeotherm 131-90B can be processed via blow moulding and injection moulding.