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Keywords of this article:  automotive 
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injection mold 
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injection mold 
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Cost versus Heat Aging Performance.
Cost versus Heat Aging Performance.
Photo: 123

Teknor Apex Company will introduce a new series of high-heat glass-reinforced polyamide (PA) 66 compounds at Fakuma 2018 in technical talks at the company booth.

As introduced, the Creamid 240 H7.5 Series compounds bridge the cost-performance gap between standard heat-resistant polyamides and costly specialty polymers, providing injection molders with a more economical alternative for automotive and other metal-replacement parts.

The new compounds provide the strength and stiffness of highly glass filled engineering polymers while maintaining high levels of critical mechanical properties even after continuous service at temperatures of 240°C.

Currently available grades, with glass fiber content of 35, 50, or 60%, exhibit dramatically improved property retention in comparison with similarly glass-filled standard PA 66 compounds.

At the same time they cost around 30% less per kilogram than high-performance polymers such as polyphthalamide (PPA) or PA 4.6, while providing comparable performance.

Additional cost savings with Creamid 240 H7.5 compounds are achievable in processing,” said Dr. Hartmut Elsässer, global director of technology for engineering thermoplastics. “These new materials exhibit lower melt and mold temperatures than competing PA 66 compounds and high-performance products like PPA, providing economies in terms of energy consumption, cycle times, and tooling requirements.” 

While the new compounds have processing temperatures in the range of 280 to 300 °C and mold temperatures of 80 to 110 °C, the corresponding ranges for PPA or PA 4.6 are 330 to 350 °C and 130 to 150 °C.

Teknor Apex recommends Creamid 240 H7.5 compounds for automotive under-hood components such as charge air cooler end caps, air intake manifolds, quick-fit connectors, radiator end tanks, turbo air ducts and resonators, oil pump wheels, EGR valves, and thermostatic casings.

Other possibilities include electronic connectors, diode carriers, and bobbins, as well as consumer products such as lamp sockets and connectors.

Creamid 240 H7.5 compounds are available worldwide. In addition to glass-filled compounds, unreinforced formulations with service temperatures up to 200 °C are also available. As a custom compounder, Teknor Apex can work with customers to address specific property requirements.

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