Abstract
In this work, the thermal and the fire behaviour of unsaturated polyester (UP) resins have been investigated. A comparison of the thermal stability of the two materials (UP resins without and with modification with DCPD grafted on the chains ends) showed that the resin with DCPD is more stable. Nevertheless, modelling of the fuel flow evolved during the degradation showed that it is faster in the case of the material with the DCPD. It is related to the formation of char which must be developed to provide protection to the underlying polymer. This assumption was then confirmed by measurement of the temperature profiles using the cone calorimeter and by the evolution of the degradation front which showed that the thermal transfer was reduced in the case of the resin with DCPD.
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