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Article Dans Une Revue Polymer Degradation and Stability Année : 2010

Photochemical behaviour of fire-retarded polymers

Résumé

The influence of a non-halogenated intumescent fire retardant on the photooxidation of polypropylene is reported. The photooxidation of polypropylene stabilised with a phenolic antioxidant and two redox antioxidants (HALS), without and with the flame retardant has been studied. The chemical modifications resulting from UV-light exposure with wavelengths above 300 nm in the presence of oxygen were followed by IR and UV-visible spectroscopies. Special attention was given to the influence of each component on the rate of oxidation of the polymeric matrix. The photooxidation of the fire-retarded polymer can be described by two independent phenomena: the photooxidation of the intumescent agent and the photooxidation of the polymer. The results obtained offer new insight in the formulation of stabilised fire-retarded PP for outdoors applications.

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Polymères

Dates et versions

hal-00512162 , version 1 (27-08-2010)

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Citer

D. Chantegraille, Sandrine Morlat-Therias, Jean-Luc Gardette. Photochemical behaviour of fire-retarded polymers. Polymer Degradation and Stability, 2010, 95 (4), pp.274-277. ⟨10.1016/j.polymdegradstab.2009.11.012⟩. ⟨hal-00512162⟩
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