Aromatic vs. Aliphatic Hyperbranched Polyphosphoesters as Flame Retardants in Epoxy Resins.
cone calorimeter
dendritic
fire test
metathesis
phosphorus
Journal
Molecules (Basel, Switzerland)
ISSN: 1420-3049
Titre abrégé: Molecules
Pays: Switzerland
ID NLM: 100964009
Informations de publication
Date de publication:
29 Oct 2019
29 Oct 2019
Historique:
received:
04
10
2019
revised:
22
10
2019
accepted:
23
10
2019
entrez:
2
11
2019
pubmed:
2
11
2019
medline:
21
3
2020
Statut:
epublish
Résumé
The current trend for future flame retardants (FRs) goes to novel efficient halogen-free materials, due to the ban of several halogenated FRs. Among the most promising alternatives are phosphorus-based FRs, and of those, polymeric materials with complex shape have been recently reported. Herein, we present novel halogen-free aromatic and aliphatic hyperbranched polyphosphoesters (hbPPEs), which were synthesized by olefin metathesis polymerization and investigated them as a FR in epoxy resins. We compare their efficiency (aliphatic vs. aromatic) and further assess the differences between the monomeric compounds and the hbPPEs. The decomposition and vaporizing behavior of a compound is an important factor in its flame-retardant behavior, but also the interaction with the pyrolyzing matrix has a significant influence on the performance. Therefore, the challenge in designing a FR is to optimize the chemical structure and its decomposition pathway to the matrix, with regards to time and temperature. This behavior becomes obvious in this study, and explains the superior gas phase activity of the aliphatic FRs.
Identifiants
pubmed: 31671913
pii: molecules24213901
doi: 10.3390/molecules24213901
pmc: PMC6864611
pii:
doi:
Substances chimiques
Epoxy Resins
0
Esters
0
Flame Retardants
0
Polymers
0
Polyphosphates
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : Deutsche Forschungsgemeinschaft
ID : WU 750/ 8-1 SCHA 730/ 15-1
Déclaration de conflit d'intérêts
The authors declare no conflict of interest.
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