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01/09/2007
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DSM Engineering Plastics has introduced what it calls ‘high flow, high productivity’ materials to offer substantial system cost reductions by shortening injection moulding production cycles and allow greater design freedom in parts. To back up its claims, the company is providing customers with product cost analysis spreadsheet tools.
The new materials are Akulon Ultraflow (a PA6) and Stanyl High Flow and Super Flow (PA46). The PA6 grades are said to have 80% more flow compared with standard PA6, yielding a 25% cycle time reduction and good surface appearance, especially for highly reinforced grades. Available with many different levels and types of fibre and mineral fillers, it has been approved for most automotive applications.
High temperature Stanyl PA46 High Flow offers similar processing economies but the Super Flow grade was co-developed with leading connector manufacturers to provide an alternative to LCP (liquid crystal polymer). It is said to outperform LCP with no micro cracking, outstanding weld line strength, outstanding toughness for pin retention, excellent retention of strength after lead free soldering and possible high regrind levels
• DSM is pushing the use of PA46 for gears in interior systems but also for electric power steering. Engineers will be demonstrating their capability at K2007, Dusseldorf, next month. They point to greater design freedom, as a result of the material’s 150% higher stiffness, strength and creep resistance at temperatures of 150-220°C compared with other PAs.
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Author
Roger Bishop
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Copyright European Automotive Design.
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