A draft updated code of building fire safety in Hong Kong was just released in end September 2011. Effect of smoke toxicity on tenability limits was not yet specified clearly. Only temperature of smoke layer, visibility and carbon monoxide concentration were mentioned on specifying smoke effect on tenability limits. The necessity of specifying smoke toxicity on tenability limits properly is poi...

Abstract Cone calorimeters are widely used to assess heat release parameters and flammability of combustible materials, but their use is limited for applications where the global equivalence ratio (GER) exceeds one, because they can only replicate burning in open conditions. The standardisation controlled atmosphere cone calorimeter (CACC) ISO/TS 5660-5:2020 offers an opportunity investigate po...

New polysiloxane oligomers containing phosphorus, 6-(2-(dihydroxy(methyl)silyl)ethyl)dibenzo[c,e][1,2]oxaphosphinine 6-oxide (DOPO-VMDMS), have been synthetized and grafted to the remaining hydroxyl groups of alkyd resins in order obtain hybrid with flame retardant properties. These silicone demonstrated better drying time, gloss chemical resistance than reference without DOPO-VMDMS. Moreover, ...

Polyurethane (PU) foams are widely used for many applications, however the use of toxic isocyanate monomers their synthesis has recently led researchers to non-isocyanate PU foams. The most promising alternative is aminolysis cyclic carbonate which yields polyhydroxyurethanes (PHU). Nevertheless, obtained suffer from significant flammability and require introduction flame retardants improve ret...

Abstract The flame-retardancy of enamelled wires was studied by using a cone calorimeter. characteristic parameters including time to ignition, heat release rate, total smoke and so on, were obtained. effect radiation flux on the flame retardancy analyzed. results show that is related content different components in composite insulation layer. Polyimide have good retardant performance, followed...

The international standard ISO 5660 Cone Calorimeter test is widely used in fire research and for modeling, but not so often legislation or requirements on products. available acceptance criteria products different countries codes have therefore been compiled are presented tables. Some studies also included. There several national standards with designation based testing according to the Calori...