Synthesis of Fe2O3/ZnFe2O4/g‐C3N4@ZIF‐8 composites: Enhancing thermal stability and flame retardancy in polyurea

Metal–organic frameworks (MOFs) have garnered significant attention in recent years due to their potential application in flame‐retardant polymeric materials. In this work, Fe2O3/ZnFe2O4/g‐C3N4@ZIF‐8 flame retardants were synthesized via solvothermal and calcination techniques, and their elemental c...

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Bibliographic Details
Published in:Journal of applied polymer science 2024-12, Vol.141 (47), p.n/a
Main Authors: Lin, Jiayu, Hou, Yongbo, Ding, Lailong, Wang, Yifan, Hu, Jinhu, Qiu, Xishun, Wu, Chao, Ma, Mingliang, Gao, Wei
Format: Article
Language:English
Subjects:
Carbon nitride
coatings
Composite materials
composites
Enthalpy
flame retardance
Flame retardants
Heat release rate
Metal-organic frameworks
Polyureas
Thermal stability
thermogravimetric analysis (TGA)
Vapor phases
Zinc ferrites
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Summary:Metal–organic frameworks (MOFs) have garnered significant attention in recent years due to their potential application in flame‐retardant polymeric materials. In this work, Fe2O3/ZnFe2O4/g‐C3N4@ZIF‐8 flame retardants were synthesized via solvothermal and calcination techniques, and their elemental composition and morphologies were thoroughly characterized. The flame retardancy of polyurea (PUA) composites incorporating varying dosages of these flame retardants was evaluated using cone calorimetry tests (CCT). The findings demonstrate that the incorporation of Fe2O3/ZnFe2O4/g‐C3N4@ZIF‐8 significantly enhanced the flame retardant properties of PUA composites. With the addition of 3 wt% of the flame retardant, the peak heat release rate (PHRR), total heat release (THR), total smoke production (TSP), and total CO yield (TCO) of the PUA composites decreased to 890.82 kW/m2, 131.34 MJ/m2, 12.30 m2, and 2.39 g, respectively, reflecting reductions of 33.59%, 18.59%, 29.40%, and 47.93% compared with pure PUA. The flame‐retardant mechanism was systematically analyzed in both the condensed and gas phases. This study provides a robust experimental foundation and novel insights that contribute to the development of advanced flame‐retardant coating materials. Synthesis of Fe2O3/ZnFe2O4/g‐C3N4@ZIF‐8 Composites for Improving Thermal and Flame Retardant Safety Properties of Polyurea.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.56261