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The melt\shrink effects on the fire behaviour of low-density thermoplastic foam have been studied in a cone calorimeter. The experiments have been performed with four samples of expanded polystyrene (EPS) foams having different thicknesses and two extruded polystyrene (XPS) foams. Decrease in surface area and increase in density, characterizing the melt\shrink effect have been measured at different incident heat fluxes. Three of these foams tested have been also examined by burning tests at an incident heat flux of 50kW m-2. It was assessed that the fire behavior  predictions based the current literature models provided incorrect results if the cone test results were applied directly. However, the correct  models provided  adequate results when the initial burning area and the density of the molten foam were used to correct the initial cone calorimeter data. This communication refers to the fact that both the effective burning area and the density of the molten foam affect the cone calorimeter data, which requires consequent corrections to attain adequate predictions of models about the materials fire behaviour.

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JIANG, Yong et al. THE MELT\SHRINK EFFECT OF LOW DENSITY THERMOPLASTICS INSULATES: CONE CALORIMETER TESTS. Thermal Science, [S.l.], mar. 2017. ISSN 2334-7163. Available at: <>. Date accessed: 24 nov. 2017. doi:
Received 2017-03-02
Accepted 2017-03-13
Published 2017-03-13


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