Abstract
A novel polyphosphazene (PZS)-wrapped iron 2-methylimidazole metal–organic framework (PZS–Fe–MOF) hybrid with rich N, P, and Fe elements is synthesized, which is incorporated into epoxy resin (EP) to prepare EP/PZS–Fe–MOF composites for improving flame retardancy and smoke suppression of EP via synergistic effect. The results indicate that PZS–Fe–MOF significantly enhances the flame retardant and smoke suppression performances of EP composites. Compared with pure EP, with the addition of 1 mass% PZS–Fe–MOF, the LOI value is increased from 32.3 to 25.8% and EP/1 mass% PZS–Fe–MOF composites pass V-1 rating. Compared with pure EP, the peak heat release rate, total heat release, smoke production rate, and total smoke production of EP/3 mass% PZS–Fe–MOF composites are decreased by 30.2%, 36.9%, 36.6%, and 41.4%, respectively. The results indicate that the improved flame retardancy and smoke suppression are mainly attributed to that the synergistic effect between PZS and Fe-MOF, promoting the formation of compact carbonaceous ceramic layer, which can restrain heat and mass transfer between EP composites and flame zone.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
