Researchers propose “Flame Retardancy Index”

Researchers propose “Flame Retardancy Index”

Several leading materials fire scientists have proposed a dimensionless “Flame Retardance Index” for flame retarded (compounds), based on cone calorimetry data: pHRR (peak heat release rate), THR (total heat release) and TTI (time to ignition). Each of these...
Tomorrow’s fire safety applications

Tomorrow’s fire safety applications

Brian Lattimer, Jensen Hughes (now with Virginia Tech), USA, summarised challenges for fire safety requirements in railways in the USA. The USA, in NFPA130 and 49CFR238.103, currently specifies the radiant panel test and accepts higher heat emissions, whereas the EU...
AlPi as PIN FR for rigid polyurethane foam

AlPi as PIN FR for rigid polyurethane foam

Aluminium diethylphosphinate was tested at 0 – 11 % loading in rigid polyurethane foam (PUR), produced by one-step mixing, water blowing. Fire performance and combustion behaviour were analysed. Dosing of AlPi was noted to deteriorate the foam cell structure. AlPi...
Silica aerogel as FR and smoke suppressant

Silica aerogel as FR and smoke suppressant

Polyurethane insulation foam (PUF) was surface treated with silica (SiO2), by acid and alkali hydrolysis, then lyophilised to generate a silica aerogel at 13 – 33% w/w loading on the foam. The nano-porous structure of the aerogel resulted in improved thermal...