Lanxess has extended their performance PIN flame retardant PBT-based polymers (polybutylene terephthalate) by a new product offering high glow wire resistance, adapted to ensure fire safety of electrical equipment and electrical vehicles. The new material is certified to GWIT (glow wire ignition temperature) of 775°C for thickness down to 0.75 mm, as well as UL94-V0 at 0.4 mm, and also offers electrical safety performance with a high tracking index, better than materials using halogenated flame retardants. It also offers UV resistance, low corrosion in contact with currents and high thermal stability (relative temperature index of 140°C or higher, UL 756B). The first in the product range is a compound material available unreinforced and with glass fibre contents of 25% – 30%. Applications include household appliances, especially those intended to operate unattended (for which fire safety is critical), such as washing machines or dishwashers, and also demanding components such as electrical vehicle battery chargers.
“LANXESS expands product range of halogen-free flame-retardant PBT compounds. High glow wire resistance protects at home and on the road”, 16 October 2018 https://lanxess.com/en/corporate/media/press-releases/2018-00071e/