Specialty chemicals company LANXESS is expanding its range of halogen-free flame-retardant compounds based on polybutylene terephthalate (PBT) to include variants with outstanding fire resistance in glow wire tests. The first in the product range is a compound reinforced with a glass fiber content of 25 %. There are plans to introduce the trial product onto the market shortly.
The new PBT material has already been certified by VDE Prüf- und Zertifizierungsinstitut GmbH with a GWIT value of 775 °C for wall thicknesses of 0.4 to 3.0 millimeters (Glow Wire Ignition Temperature, IEC 60695-2-13). It also achieves excellent results in glow wire tests on finished parts according to IEC 60695-2-11, LANXESS says in a Press release.