GERMANY: Hübner Group has developed HFP 34, a semi-rigid polyurethane-based material which can be used to make weather-resistant moulded parts for rolling stock which will turn to foam in the event of a fire, protecting passengers from smoke and flames until they can be evacuated.
‘As soon as these parts come into contact with fire or heat, they begin to react’, explains Patrick Kniemeyer, key account manager at Hübner.
‘They turn into a frothy sort of foam that creates an insulating protective layer. This closes up openings and gaps in the vehicle as well cable and hose ducts, thus preventing the spread of heat and smoke. Particularly in tunnel areas, this can be of critical importance for the evacuation of occupants.’
Housings for components requiring special protection can also be produced with the material so that they will continue to function in the event of a fire.