Journal
POLYMER DEGRADATION AND STABILITY
Volume 93, Issue 4, Pages 818-826Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2008.01.016
Keywords
PET; exolit OP950 phosphinates; OMPOSS; synergy; fire retardancy; intumescence
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Fire retarded poly(ethylene terephthalate) (PET) has been obtained by the incorporation of octamethyl polyhedral oligomeric silsesquioxane (OMPOSS) and Exolit OP950, a phosphinate-based compound, in recycled PET. The presence of Exolit OP950 only leads to intumescence explaining the improvement of the flame retardancy. The addition of OMPOSS leads to a synergistic effect considerably increasing the fire retarding performances of the polymer in terms of cone calorimetry and limiting oxygen index even if a small thermal stabilisation as well as a very poor dispersion of OMPOSS and OP950 into the matrix has been observed. (c) 2008 Elsevier Ltd. All rights reserved.
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