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01/09/2007
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A flame-retardant nylon and the first commercial Aardalloy thermoplastic alloy products are among a range of next generation roto resins from Aardvark Polymers.
Aarlon 4055FR is a premium flame retardant type 6/6 polyamide with a UL94-V0 rating for flammability. It is formulated without heavy metals or red phosphorous and is halogen free, with a high deformation temperature for applications up to 230°C.
The nylon can be used in aggressive chemical and fuel environments at elevated temperatures and is vibration, spin and ultrasonic weldable.
Although Aardalloy thermoplastic alloys are generally designed to meet the demands of a specific application, two recent formulations are said to offer such broad market appeal that they are being commercialised for the global markets.
Aardalloy 3300 is a medium viscosity, high heat homopolymer acetal alloyed with elastomers and modifiers that significantly increase impact strength and elongation compared to unfilled acetals. It maintains the high degree of chemical resistance and low fuel permeation ratios of unfilled acetals, with deformation temperatures as high as 157°C.
Aardalloy 3326 is a high viscosity homopolymer acetal alloyed with greater levels of elastomers and modifiers that offer the maximum impact strength and elongation of any acetal. It is a toughened POM alloy with the high chemical resistance and low fuel permeability of unfilled acetals. It can be used in applications requiring deformation temperatures up to 100°C.
Aardalloy 3300 and 3326 may be sterilised with steam and ETO and may undergo repeated autoclave cycles. Both formulations may be processed on conventional tooling and are weldable, bondable, and may be machined in conventional or CNC processes.
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Author
Roger Bishop
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Copyright European Automotive Design.
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