Flame-retardant PBT for use in railways
The company ABB in Lyon has recently started to use the polybutylene terephthalate (PBT) Ultradur? B4450 G5 from BASF for its DC contactors. Since these contactors are used on railways, they must satisfy the stringent fire prevention requirements of the French Railway Standard NF F 16-101. The 25% glass fibre-reinforced thermoplastic is based on a special flame retardant system and, with its especially good values for smoke density and toxicity, satisfies the requirements for the I3F2 classifica
2014-02-13 ringier

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