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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21.09.2017 | Penn State
Stopping problem ice -- by cracking it
21.09.2017 | Norwegian University of Science and Technology
Plants and algae use the enzyme Rubisco to fix carbon dioxide, removing it from the atmosphere and converting it into biomass. Algae have figured out a way to increase the efficiency of carbon fixation. They gather most of their Rubisco into a ball-shaped microcompartment called the pyrenoid, which they flood with a high local concentration of carbon dioxide. A team of scientists at Princeton University, the Carnegie Institution for Science, Stanford University and the Max Plank Institute of Biochemistry have unravelled the mysteries of how the pyrenoid is assembled. These insights can help to engineer crops that remove more carbon dioxide from the atmosphere while producing more food.
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Using ultrafast flashes of laser and x-ray radiation, scientists at the Max Planck Institute of Quantum Optics (Garching, Germany) took snapshots of the briefest electron motion inside a solid material to date. The electron motion lasted only 750 billionths of the billionth of a second before it fainted, setting a new record of human capability to capture ultrafast processes inside solids!
When x-rays shine onto solid materials or large molecules, an electron is pushed away from its original place near the nucleus of the atom, leaving a hole...
For the first time, physicists have successfully imaged spiral magnetic ordering in a multiferroic material. These materials are considered highly promising candidates for future data storage media. The researchers were able to prove their findings using unique quantum sensors that were developed at Basel University and that can analyze electromagnetic fields on the nanometer scale. The results – obtained by scientists from the University of Basel’s Department of Physics, the Swiss Nanoscience Institute, the University of Montpellier and several laboratories from University Paris-Saclay – were recently published in the journal Nature.
Multiferroics are materials that simultaneously react to electric and magnetic fields. These two properties are rarely found together, and their combined...
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