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首页> 外文期刊>Journal of Applied Polymer Science >Facile fabrication of high‐performance epoxy systems with superior mechanical properties, flame retardancy, and smoke suppression
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Facile fabrication of high‐performance epoxy systems with superior mechanical properties, flame retardancy, and smoke suppression

机译：Facile fabrication of high‐performance epoxy systems with superior mechanical properties, flame retardancy, and smoke suppression

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Abstract The realization of high‐performance thermosetting polymers with superior mechanical properties, flame retardancy and smoke suppression is very necessary but not yet implemented. Herein, a flame‐retardant curing agent (BICPD) combining cyclotriphosphazene and phosphaphenanthrene groups was synthesized, and used to prepare high‐performance, flame‐retardant epoxy (EP/BICPD) systems. Our results showed that the EP/BICPD systems began to cure at 110°C and solidify rapidly under heating. In comparison to the common epoxy system, the EP/BICPD thermosets exhibited improved glass transition temperature and mechanical properties. Most impressively, the EP/BICPD thermosets possessed outstanding flame retardancy and smoke suppression. The EP/BICPD‐20 thermoset achieved the LOI value of 37.7 and passed the UL94 V‐0 rating. Additionally, compared with the common epoxy thermoset, the peak of heat release rate (pHRR) and total smoke production (TSP) of EP/BICPD‐20 thermoset were reduced by ~70.0 and ~43.4, respectively. The significant enhancements in flame retardancy and smoke suppression was mainly due to the collaboration of cyclotriphosphazene and phosphaphenanthrene in condensed and gaseous phases. Therefore, the high‐performance EP/BICPD systems with high glass transition temperature, satisfied mechanical properties, superior flame retardancy and smoke suppression showed profound scientific and industrial significance.

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