Biobased Reactive Flame Retardant with the Phenylethylamine Structure: Enhancement in the Flame Retardancy and Mechanical Properties of Epoxy Resins

Published: Jan. 1, 2024

Language: Английский

Biobased Reactive Flame Retardant With the Phenylethylamine Structure for Enhancing Flame Retardancy and Mechanical Properties of Epoxy Resins

Journal of Applied Polymer Science, Journal Year: 2024, Volume and Issue: 142(10)

Published: Dec. 2, 2024

ABSTRACT A bio‐based reactive flame retardant (PVD) was synthesized using vanillin, phenethylamine, and 9,10‐dihydro‐9‐oxa‐10‐phosphaphenanthrene‐10‐oxide (DOPO). This study aimed to enhance epoxy resin's fire resistance evaluate the strength of EP/PVD composites for eco‐friendly specialized applications. The chemical structure PVD confirmed Fourier transform infrared spectroscopy (FTIR) nuclear magnetic resonance (NMR) spectroscopy. effect on curing kinetics EP studied non‐isothermal differential scanning calorimetry (DSC). During combustion, releases ∙PO 2 radicals, which capture active ∙H ∙OH radicals generated during combustion EP. results in a significant quenching effect, thereby achieving retardancy. with 7.5 wt% 0.49 phosphorus (EP/PVD‐7.5) exhibited V‐0 rating UL‐94 vertical burning tests limiting oxygen index (LOI) 32.4%. Additionally, compared pure EP, EP/PVD‐7.5 showed 41.7% reduction peak heat‐release rate cone tests. dual‐phase flame‐retardant by analysis residual char its pyrolysis behavior. Furthermore, exhibits superior mechanical properties transparency indicating that holds promise as

Language: Английский

Besides Traditional Organophosphate Esters: The Ecological Risks of Emerging Organophosphate Esters in the Yangtze River Basin Cannot Be Ignored

Environmental Pollution, Journal Year: 2024, Volume and Issue: unknown, P. 125585 - 125585

Published: Dec. 1, 2024

Language: Английский