Intumescent flame retardant systems of modified rheology

P. Anna, G. Marosi, S. Bourbigot, M. Le Bras, R. Delobel

Research output: Contribution to journalArticle

86 Citations (Scopus)

Abstract

A model system of intumescent flame retardants, consisting of ammonium polyphosphate and pentaerythritol was prepared and investigated in polypropylene and without the polymer matrix. Thermal scanning oscillation rheometric investigation in the temperature range of 170-500 °C was used to detect the rheological behaviour in the region of melting of the polymer and the plasticity of the char formed at higher temperature. Addition of boroxo siloxane to the model system caused advantageous changes in both regions. Increased complex viscosity and viscoelsasticity of the melt and char respectively contributes to better flame retardancy. According to DTG and FTIR studies the reactions of boroxo siloxane with pentaerythritol and ammonium polyphosphate are the reasons for the rheological changes.

Original languageEnglish
Pages (from-to)243-247
Number of pages5
JournalPolymer Degradation and Stability
Volume77
Issue number2
DOIs
Publication statusPublished - 2002

Fingerprint

Flame Retardants
Siloxanes
Polyphosphates
flame retardants
siloxanes
Flame retardants
Rheology
Ammonium Compounds
rheology
Polypropylenes
polymers
Polymer matrix
polypropylene
plastic properties
Plasticity
flames
Polymers
Melting
melting
Viscosity

Keywords

  • Boroxo siloxane
  • Flame retardants
  • Intumescence
  • Oscillation rheometry
  • Polyolefins
  • Thermal scanning

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

Cite this

Intumescent flame retardant systems of modified rheology. / Anna, P.; Marosi, G.; Bourbigot, S.; Le Bras, M.; Delobel, R.

In: Polymer Degradation and Stability, Vol. 77, No. 2, 2002, p. 243-247.

Research output: Contribution to journalArticle

Anna, P. ; Marosi, G. ; Bourbigot, S. ; Le Bras, M. ; Delobel, R. / Intumescent flame retardant systems of modified rheology. In: Polymer Degradation and Stability. 2002 ; Vol. 77, No. 2. pp. 243-247.
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