As a result, the high performance acetal homopolymers, which are categorized by their viscosity, are well within the formaldehyde emission requirements of the leading automotive manufacturers, creating new opportunities for their adoption in automotive interior applications.
Testing by the SGS Institut Fresenius GmbH in Germany, in accordance with the VDA standard 275, confirms that all three low-emission grades of Delrin® are within the formaldehyde emission requirements of the leading automotive manufacturers.
The new low-emission grades are globally available in three basic melt flow series: Delrin® 100PE, 300PE and 500PE, with Delrin® 100PE being the most viscous. All three have been specially formulated with an additive to substantially reduce their release of formaldehyde during processing and use to levels which meet even the most stringent of emission requirements demanded by today’s leading automotive OEMs. Subsequent testing of low-emission Delrin®, carried out by SGS Institut Fresenius GmbH in Germany in accordance with the VDA (Verband der Automobilindustrie) standard 275, confirms the outgassing of formaldehyde from all three grades to be below 2 mg/kg.
As well as an extremely low volatile release, the new low-emission Delrin® grades provide the same high mechanical performance as the standard grades in terms of its strength, stiffness, creep and fatigue resistance and impact strength. “Our achievement in developing the first acetal homopolymer to meet the emission standards of all leading OEMs, without compromising mechanical performance, will open up new opportunities for the cost-effective replacement of existing materials in many automotive interior applications,” says Hans-Hermann Kirner, automotive car interior development manager at DuPont. “These include, for example, components for safety systems, door panels and seats, where its unique combination of properties can be of great benefit.”
The DuPont Engineering Polymers business manufactures and sells Crastin® PBT and Rynite® PET thermoplastic polyester resins, Delrin® acetal resins, Hytrel® thermoplastic polyester elastomers, DuPont™ ETPV engineering thermoplastic vulcanizates, Minlon® mineral-reinforced nylon resins, Thermx® PCT polycyclohexylene dimethylterephthalates, Tynex® nylon filaments, Vespel® parts and shapes, Zenite® liquid crystal polymers and Zytel® nylon resins and Zytel® HTN high-performance polyamides. These products serve global markets in the aerospace, appliance, automotive, consumer, electrical, electronic, healthcare, industrial, sporting goods and many other diversified industries.
DuPont is a science-based products and services company. Founded in 1802, DuPont puts science to work by creating sustainable solutions essential to a better, safer, healthier life for people everywhere. Operating in more than 70 countries, DuPont offers a wide range of innovative products and services for markets including agriculture and food; building and construction; communications; and transportation.
The DuPont Oval, DuPont™, The miracles of science™, and Delrin® are registered trademarks or trademarks of E.I. du Pont de Nemours and Company or its affiliates.
Horst Ulrich Reimer | DuPont
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The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
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