Flame retardancy and smoke suppression properties of bio-based chitosan polyelectrolyte flame retardant containing P and N in epoxy resin.
Int J Biol Macromol
; : 135001, 2024 Aug 23.
Article
en En
| MEDLINE
| ID: mdl-39182868
ABSTRACT
This study reports the successful synthesis of flame-retardant and smoke-suppressing epoxy resin (EP) via bio-based polyelectrolyte flame retardants. Herein, a novel polyelectrolyte flame retardant was prepared from chitosan (CS) and hexa-(4-carboxyl-phenoxy)-cyclotriphosphazene (HCPCP) by acid-base neutralization reaction, which the HCPCP was synthesized with hexachlorocyclotriphosphazene (HCCP) and methyl p-hydroxybenzoate (MP) by nucleophilic substitution reaction. The combined effect of the addition on the flame retardant, smoke suppression and mechanical properties of EP samples were systematically investigated. The presence of this bio-based polyelectrolyte provided excellent smoke suppression and flame-retardant properties of the prepared EP. Among them, the peak heat release rate (PHRR), peak smoke production rate (PSPR) and total smoke production (TSP) of EP/9wt%3CS-HCPCP composite (the ratio of CS to HCPCP was 3 7, and the dosage was 9â¯wt%) were reduced by 45.42â¯%, 41.66â¯% and 22.56â¯%, respectively. In addition, the EP/CS-HCPCP composites showed a 207.80â¯% enhancement in char residue compared to pure EP. These results suggest a green and cost-effective strategy for the production of flame-retardant, drip-proof and smoke-suppressed EP composites.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Int J Biol Macromol
Año:
2024
Tipo del documento:
Article
País de afiliación:
China
Pais de publicación:
HOLANDA
/
HOLLAND
/
NETHERLANDS
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NL
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PAISES BAJOS
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THE NETHERLANDS