Electrostatic assembly of metal organic frameworks nanocubes on electrochemically exfoliated graphene nanoflakes : Superior role in flame retardance

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

5 Scopus Citations
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Author(s)

  • Wei Bai
  • Junjie Yang
  • Konghao Yu
  • Zhirong Wang
  • Junling Wang

Detail(s)

Original languageEnglish
Article number160863
Journal / PublicationApplied Surface Science
Volume672
Online published31 Jul 2024
Publication statusPublished - 1 Nov 2024

Abstract

The extensive usage of epoxy resin (EP) is facing the head-scratching challenge of high fire hazard. As such, the electrostatic assembly of metal organic frameworks (MOFs) nanocubes on electrochemically exfoliated graphene nanoflakes is performed to acquire the hybrid of PG@UIO. The corresponding role and behavior in flame retardance are explored in detail. By adding 2.0 wt% PG@UIO, the reductions in peak heat release rate, total heat release, peak smoke production rate, peak CO yield, peak CO2 yield reach 49.2 %, 44.3 %, 56.1 %, 57.7 % and 51.3 %. The in-situ volatiles analysis points out the reductions of 35.1 %, 29.4 %, 50.8 %, 32.5 % in the maximal intensities of aromatic compounds, ethers, CO and HCN. The mechanical interlocking area between PG@UIO nanostructures and EP molecular chains contributes to the enhanced mechanical performances. Specifically, by adding 2.0 wt% PG@UIO, the flexural strength is increased by 50.3 %. This work enables a new paradigm for fabricating fire-safe polymer composites with the judicious design of MOFs based flame retardant. © 2024 Elsevier B.V.

Research Area(s)

  • Electrostatic assembly, Epoxy resin, Fire hazard, Mechanical property, Thermal stability

Citation Format(s)

Electrostatic assembly of metal organic frameworks nanocubes on electrochemically exfoliated graphene nanoflakes: Superior role in flame retardance. / Bai, Wei; Yang, Junjie; Yu, Konghao et al.
In: Applied Surface Science, Vol. 672, 160863, 01.11.2024.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review