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DuPont launches new superstructural resins, new Engineering Thermoplastic Vulcanizate
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Du Pont Engineering Polymers
: 20 October, 2004 (Company News) |
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DuPont has launched a |
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The superstructural resins include three new long-fibre-reinforced DuPont™ Zytel® polyamide 66 grades, five short-fibre-reinforced and one long-fibre-reinforced Zytel® HTN high performance polyamide variants, together with Zytel® CDV805, a new toughened polyamide 66 reinforced with carbon/glass fibre.
The key features of the superstructural range are very high stiffness and strength combined with excellent creep and fatigue resistance. The long-fibre-reinforced types, available with 40 %, 50 % or 60 % reinforcement, offer significantly higher notched impact resistance and considerably increased strength and stiffness compared to equivalent short-fibre resins.
The five Zytel® HTN grades are based upon a family of high performance polyamide resins with between 35 % and 50 % short-fibre reinforcement. They also offer high levels of stiffness and strength, combined with good consistency of properties from dry-as-moulded to equilibrium-moisture content. Specific grades can in addition provide outstanding high gloss surface characteristics whilst others offer high burst pressure resistance capabilities.
The superstructural resins are expected to be used in a wide variety of applications including structural automotive components, chassis parts for electrical/electronic equipment, as well as in power-tools, furniture, garden equipment and sporting goods.
First commercial applications include a cross-country roller-skiing device (Zytel® HTN 51LG50) and the world’s first air-spring damper module (Zytel® HTN54), which is used in the Range Rover. The wheels of a vehicle designed for off-road racing take advantage of the very high elongation at break combined with other structural properties offered by carbon/glass-fibre-reinforced Zytel® CDV805.
To meet the demand for a broader range of hardnesses in the new DuPont™ ETPVs (engineering thermoplastic vulcanizate), a grade with Shore A 80 hardness is now available, complementing the 60 and 90 shore A hardness grades launched earlier this year. DuPont™ ETPV is the thermoplastic rubber that resists oil and heat, and can be processed on conventional thermoplastics equipment. Further new grades and lubricated masterbatches are being developed. |
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