3D MXene frameworks for flame retardant hydrophobic polymer nanocomposites

[Display omitted] •Synthesis of MXene-based flame-retardant networks using phase change and freezing-drying methods for the first time.•Utilization of MXene nanosheets to enhance flame retardancy of hydrophobic polymers.•Incorporation of flame-retardant networks to aid dispersion of MXene nanosheets...

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Published inComposites. Part A, Applied science and manufacturing Vol. 173; p. 107673
Main Authors Wang, Wei, Wang, Cheng, Yuen, Anthony Chun Yin, Li, Ao, Lin, Bo, Yuan, Yao, Ma, Chao, Han, Yu, Yeoh, Guan Heng
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.10.2023
Subjects
asymmetric membranes
Fire safety
Flame retardancy
flame retardants
hydrophobicity
MXene
polymer nanocomposites
polymers
PVB composites
synergism
Synergistic effect
thermal degradation
Flame retardancy
PVB composites
Synergistic effect
MXene
Fire safety
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Summary:[Display omitted] •Synthesis of MXene-based flame-retardant networks using phase change and freezing-drying methods for the first time.•Utilization of MXene nanosheets to enhance flame retardancy of hydrophobic polymers.•Incorporation of flame-retardant networks to aid dispersion of MXene nanosheets in hydrophobic polymers.•Fire resistance of PVB composites was significantly enhanced by MXene networks and phosphorus flame retardant. MXene has been the subject of various studies and applications in polymer composites in recent years. However, its compatibility with hydrophobic polymers has been a significant limitation. This study presents a simple way to create MXene frameworks to realise flame retardant hydrophobic polymer composites. The fabrication process is environmentally friendly and low-cost. The PVB/HPUPO/MXene composite membrane showed a 74.7% reduction in volatile intensity during thermal degradation compared to pristine PVB. The PVB/HPUPO/MXene composite membrane also demonstrated significantly improved flame retardancy compared to pure PVB. Specifically, MXene based networks and HPUPO showed synergistic effect in improving the fire safety of PVB composites. This study offers a new approach to incorporating MXene as a flame retardant into conventional phosphorus- and nitrogen-based flame retardant systems for hydrophobic polymers with great fire retardancy.
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ISSN:1359-835X
1878-5840
DOI:10.1016/j.compositesa.2023.107673