Influence of the catalyst concentration on the chemical structure, the physical properties and the fire behavior of rigid polyisocyanurate foams

Research output: Contribution to journal › Research article › Contributed › peer-review

Contributors

  • Johannes Lenz - , Chair of Organic Chemistry of Polymers, Leibniz Institute of Polymer Research Dresden (Author)
  • Doris Pospiech - , Leibniz Institute of Polymer Research Dresden (Author)
  • Maxime Paven - , Covestro Deutschland AG (Author)
  • Rolf W. Albach - , Covestro Deutschland AG (Author)
  • Brigitte Voit - , Chair of Organic Chemistry of Polymers, Leibniz Institute of Polymer Research Dresden (Author)

Abstract

In this paper, the role of trimerization in polyisocyanurate (PIR) foams and its impact on the physical properties and the fire behavior is discussed. The degree of trimerization was systematically varied using different catalyst concentrations. The enhanced formation of isocyanurate structures through higher catalyst concentrations leads to higher mechanical stability and improved fire behavior as measured by vertical flame spread according to DIN4102 and under forced flaming conditions in the cone calorimeter. A clear correlation between catalyst content, chemical structure of the foams (relative concentration of isocyanurate units representing crosslinking) and fire behavior is found. (C) 2020 Elsevier Ltd. All rights reserved.

Details

Original languageEnglish
Article number109168
Number of pages8
JournalPolymer degradation and stability
Volume177
Publication statusPublished - Jul 2020
Peer-reviewedYes

External IDs

Scopus 85084052903
ORCID /0000-0002-4531-691X/work/148607996

Keywords

Keywords

  • Cone calorimeter, Dibenzo[d,f][1,3,2]dioxaphosphepine 6-oxide, Ftir, Flame retardant, Foam, Polyisocyanurate, Vertical flame spread

Library keywords