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Teknor Apex is introducing a new series of high-heat glass reinforced polyamide 66 (PA 66) compounds at the Fakuma 2018 plastics exhibition in October.
The materials are designed to bridge the cost-performance gap between standard heat-resistant polyamides and costly speciality polymers, providing injection moulders with a more economical alternative for automotive and other metal-replacement parts.
Creamid 240 H7.5 compounds are said to 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. Teknor Apex reports that currently available grades, with glass fibre 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,” adds Dr Hartmut Elsässer, Global Director of Technology for Engineering Thermoplastics at Teknor Apex. “These new materials exhibit lower melt and mould 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 280-300°C and mould temperatures of 80-110°C, the corresponding ranges for PPA or PA 4.6 are 330-350°C and 130-150°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.
“While metal replacement continues to drive demand for polyamides in the automotive market, performance-boosting technologies such as turbocharged engines and advanced transmission systems place stricter requirements for heat resistance, chemical resistance, and reduced water absorption,” says Markus Krippner, Director of Sales and Marketing. “These forces, along with the overriding industry effort to reduce vehicle weight, are driving Teknor Apex investment into new polyamide technologies.”
Lightweighting requires materials that provide high strength, low levels of creep and excellent processability, notes Krippner.
“Creamid 240 H7.5 compounds exhibit flow properties that readily accommodate the complex or thin-wall parts or the long flow paths that are often required for metal replacement.”
At the Teknor Apex booth during Fakuma, Elsässer will make presentations on Creamid 240 H7.5 compounds on 16, 17 and 18 October.
Creamid 240 H7.5 compounds are available worldwide. As a custom compounder, Teknor Apex can work with customers to address specific property requirements.
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