Journal
POLYMER CHEMISTRY
Volume 10, Issue 31, Pages 4346-4358Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9py00737g
Keywords
-
Categories
Funding
- Deutsche Forschungsgemeinschaft (DFG) [DFG SCHA 730/15-1, WU 750/8-1]
- Max Planck Society
- [DFG/GSC 266]
Ask authors/readers for more resources
We successfully synthesized multifunctional P-based hyperbranched polymeric flame retardants (hb-FRs) with varying oxygen-to-nitrogen (O : N) content and characterized them via(1)H and P-31 NMR and GPC. Their miscibility in epoxy resins (EP) and impact on glass-transition temperatures (T-g) were determined via differential scanning calorimetry (DSC). Using thermogravimetric and evolved gas analysis (TGA, TG-FTIR), pyrolysis gas chromatography/mass spectrometry (Py-GC-MS), hot stage FTIR, flammability tests UL-94 and LOI, fire testing via cone calorimetry, residue analysis via scanning electron microscopy (SEM) and elemental analysis, detailed decomposition mechanisms and modes of action are proposed. hb-polymeric FRs have improved miscibility and thermal stability, leading to high FR performance even at low loadings. Polymeric, complex FRs increase flame retardancy, mitigate negative effects of low molecular weight variants, and can compete with commercial aromatic FRs. The results illustrate the role played by the chemical structure in flame retardancy and highlight the potential of hb-FRs as multifunctional additives.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available