Effect of recycling on fire retardancy of intumescent polypropylene based blends

Xavier Almeras, Michel Le Bras, Peter Hornsby, Serge Bourbigot, Gyorgy Marosi, Peter Anna, René Delobel

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This work deals with the effect of recycling on halogen-free flame retarded polypropylene blends. The intumescent ammonium polyphosphate/polyamide-6/polypropylene blend is considered. The study of the fire properties using cone calorimeter shows a decrease in the fire performance. Recycling the blends induces chemical modifications of polymer and additives. The chemical modifications due to the recycling are investigated by solid state 31P NMR. It is shown that APP is degraded. These modifications induce a loss of the ammonium contents, which could explain the decrease in the fire performance.

Original languageEnglish
Pages (from-to)25-46
Number of pages22
JournalProgress in Rubber, Plastics and Recycling Technology
Volume20
Issue number1
Publication statusPublished - Feb 11 2004

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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