Influence of modified rheology on the efficiency of intumescent flame retardant systems

P. Anna, Gy Marosi, I. Csontos, S. Bourbigot, M. Le Bras, R. Delobel

Research output: Article

34 Citations (Scopus)


Optimal concentration of boroxo siloxane elastomer synergist was determined by LOI and cone calorimetric measurements on ammonium polyphosphate and pentaerythritol containing intumescent flame retardant for polypropylene. The increased viscosity of the melt and plasticity of intumescent char due to boroxo siloxane elastomer could be proved by a thermal scanning rheometric investigation. It is presumed, the increased melt viscosity is created by the product of boroxo siloxane-pentaerythritol, formed during the compound preparation, while the improved char plasticity is the result of product formed at high temperature from boroxo siloxane and ammonium polyphosphate.

Original languageEnglish
Pages (from-to)423-426
Number of pages4
JournalPolymer Degradation and Stability
Issue number3
Publication statusPublished - nov. 22 2001


ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Polymers and Plastics
  • Materials Chemistry

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