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High-heat polyamides allow for metal replacement

News 08.05.2018

A new series of ultra-high performance glass-reinforced polyamide 66 compounds bridges the cost-performance gap between standard engineering thermoplastics and high-heat specialty polymers, providing injection molders with a more economical alternative to metal or current polyphthalamides (PPAs). Teknor Apex Company is now introducing the new materials at NPE2018.

Teknor01. Tensile Strength

“The greater design flexibility of injection molded parts and the fact that they require much less post-process machining enhances the attractiveness of metal replacement projects for OEMs,” said Michael Roberts, vice president in charge of the Engineering Thermoplastics Division of Teknor Apex. “Our new materials expand the scope of metal replacement opportunities into higher-temperature use environments.”

Creamid TM A3H7.5G Series 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 up to 240°C (464°F). These materials exhibit dramatically improved property retention in comparison with standard, similarly glass-filled PA 66 compounds. At the same time, as high-flow materials, they are well suited for thin-wall parts with long flow paths, as in automotive light-weighting applications.

“Our new compounds are more cost effective than other super-high temperature polymers such as polyphthalamides (PPAs) or specialty polyamides like PA 4.6, PA 11T, PA MDX6, or PA 4T,” said application engineer Johannes Finkenberger, “In addition, they allow for lower processing and mold temperatures, providing additional benefits in terms of energy consumption and tooling requirements.”

Teknor02. Elongation

These new compounds process at temperatures in the range of 280 (464) to 300°C (572°F) and with mold temperatures of 80 (176) to 110°C (230°F); the corresponding ranges for PPA or PA 4.6 are 330 (626) to 350°C (662°F) and 130 (266) to 150°C (302°F), respectively.

Creamid A3H7.5G compounds are recommended for under-hood parts in vehicles with turbo-charged engines where long-term high temperature performance is required.

The new high temperature product series includes glass loading levels up to 60%. As a custom compounder, Teknor Apex can address specific property requirements and tailor the new technology around the overall requirements of the application.

About Teknor Apex
Teknor Apex Company, a privately held firm founded in 1924, is one of the world’s leading custom compounders of plastics. Teknor Apex produces flexible and rigid vinyl, thermoplastic elastomers, nylons, color masterbatches, specialty chemicals, and hoses. The company is headquartered in Pawtucket, RI, U.S.A. and operates thirteen manufacturing facilities worldwide in the United States, Belgium, Germany, China, and Singapore.

The Engineering Thermoplastics (ETP) Division of Teknor Apex Company is an international supplier of compounds for the transportation, consumer products, and industrial markets. It produces reinforced and specially modified compounds of polyamide 6, 6/6, 6/10, and 6/12 under the Chemlon® brand; exceptionally high-performance Creamid TM and Duramid TM polyamides based on partially aromatic polymers; engineering-grade blends based on diverse resins; and specialized formulations for radiation crosslinking and electroplating.

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