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Lanxess unveils two new polyamide 6 compounds
26
Jun '17
Lanxess, a leading specialty chemicals company from Germany, involved in the development, manufacturing, and marketing of chemical intermediates, additives, specialty chemicals, and plastics, has expanded its portfolio of Durethan-brand, flame-retardant polyamide 6 compounds to include two new product grades that are highly reinforced with glass fibres.

In addition to outstanding flame retardance, both display high strength and stiffness combined with good toughness. They are ideal for components subject to high mechanical load, such as structural parts in industrial machines that must meet flame retardance requirements, and moulded case circuit breakers (MCCB)

Durethan BKV45FN04 is reinforced with 45 per cent-by-weight short glass fibres. Its flame retardance package contains no halogens or red phosphorus. The high-modulus material can therefore also be coloured as desired. Its high flame retardance becomes evident in the UL 94 test of the US testing organisation Underwriter Laboratories (UL). The material passes the test, achieving the best classification of V-0 with test specimens just 0.4 millimetres thick.

With a CTI A (Comparative Tracking Index, IEC 60112) of 600 volts, the material is highly tracking resistant. Electronic assemblies can, therefore, be positioned closer together without resulting in shorts or device defects caused by leakage current. Another of the material’s strengths is its high-voltage tracking resistance to DIN EN 60587 and ASTM D2303 (Inclined Plane Tracking, IPT). The test recreates how strongly the insulating capacity of a surface changes at high voltages outdoors when exposed to moisture and soiling.

The second new polyamide 6 from Lanxess is on the verge of market introduction and contains over 50 per cent glass fibres. With its halogen-based flame retardance package, it likewise achieves V-0 (0.75 millimetres) and 5VA classification in UL 94 testing (UL Yellow Card). The high flame retardance is also evident in glow wire testing to IEC 60695-2-12/13. For example, at 775 °C, the product easily fulfils glow wire ignition temperature (GWIT) requirements.

With their high glass fibre content, both of the new engineering materials display unusually high stiffness and strength. Durethan BKV45FN04, for instance, has a tensile modulus of 16,000 megapascals (freshly moulded). Despite glass fibre reinforcement, the melts of both thermoplastics display excellent flow properties thanks to EasyFlow technology. (GK)

Fibre2Fashion News Desk – India


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