Highly efficient flame retardant and smoke suppression mechanism of polypropylene nanocomposites based on clay and allylamine polyphosphate

Research output: Contribution to journalResearch articleContributedpeer-review


  • Dan Xiao - , Fujian University of Technology, Leibniz Institute of Polymer Research Dresden, TUD Dresden University of Technology (Author)
  • Meng-Ting Zheng - , Fujian University of Technology (Author)
  • Uwe Gohs - , Institute of Lightweight Engineering and Polymer Technology (Author)
  • Udo Wagenknecht - , Leibniz Institute of Polymer Research Dresden (Author)
  • Brigitte Voit - , Chair of Organic Chemistry of Polymers, Leibniz Institute of Polymer Research Dresden (Author)
  • De-Yi Wang - , Instituto IMDEA Materiales, Francisco de Vitoria University (Author)


Fire-retarded polymer nanocomposites (FRPN) based on polypropylene with clay and allylamine polyphosphate (PP/clay-AAPP) were designed and prepared by melt mixing. Their morphological, thermal and fire-safety properties were investigated by TEM, SEM, EDS, TG, UL-94, LOI, cone-calorimeter test and TG-FTIR. The results exhibited that the LOI of PP/2 wt%clay-20wt%AAPP nanocomposites was 29.5% with V-0 rating level in UL-94 vertical testing. Significant enhancements in fire safety performance were also observed for fire-retarded PP nanocomposites from cone-calorimeter test decreasing heat release as well as smoke and toxic gases. PP/clay-AAPP nanocomposites not only provided relatively stable char layer during polymer burning, but also exhibited better fire safety performance due to the exfoliation of clay platelets. It displayed that incorporation of clay and AAPP were very efficient in increasing the fire safety of PP composites.


Original languageEnglish
Article number52311
JournalJournal of applied polymer science
Issue number23
Early online date8 Mar 2022
Publication statusPublished - 15 Jun 2022

External IDs

Mendeley a8ab21d6-3762-3e16-a36a-5ba3c74eb3f5
WOS 000765827200001
unpaywall 10.1002/app.52311
ORCID /0000-0002-4531-691X/work/148607604


DFG Classification of Subject Areas according to Review Boards


  • applications, clay, composites, degradation, flame retardance