Archivio Istituzionale della RicercaUrea, which is commonly used as a ‘blowing’ co-additive in intumescent coatings, is shown to depress intumescence when it is added to ammonium polyphosphate-pentaerythritol mixtures incorporated into the bulk of polypropylene. Concurrently, the fire retardant properties of the intumescent additive are depressed in the presence of urea although, in this case, a smaller amount of flammable hydrocarbons is evolved in the thermal degradation of the polymer.
Study of mechanism of intumescence in fire retardant polymers. Part III: Effect of urea on the ammonium polyphosphate - pentaerythritol system / Camino, Giovanni; Costa, L.; Trossarelli, L.. - In: POLYMER DEGRADATION AND STABILITY. - ISSN 0141-3910. - 7:4(1984), pp. 221-229. [10.1016/0141-3910(84)90098-3]
Study of mechanism of intumescence in fire retardant polymers. Part III: Effect of urea on the ammonium polyphosphate - pentaerythritol system
CAMINO, GIOVANNI;
1984
Abstract
Urea, which is commonly used as a ‘blowing’ co-additive in intumescent coatings, is shown to depress intumescence when it is added to ammonium polyphosphate-pentaerythritol mixtures incorporated into the bulk of polypropylene. Concurrently, the fire retardant properties of the intumescent additive are depressed in the presence of urea although, in this case, a smaller amount of flammable hydrocarbons is evolved in the thermal degradation of the polymer.
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https://hdl.handle.net/11583/1430141
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