Facile preparation of phosphorus containing hyperbranched polysiloxane grafted graphene oxide hybrid toward simultaneously enhanced flame retardancy and smoke suppression of thermoplastic polyurethane nanocomposites

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

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Author(s)

  • Wenjie Huang
  • Jingshu Huang
  • Yuan Meng
  • Xianwu Cao
  • Qunchao Zhang
  • Dean Shi
  • Tao Jiang

Detail(s)

Original languageEnglish
Article number106614
Journal / PublicationComposites Part A: Applied Science and Manufacturing
Volume150
Online published21 Aug 2021
Publication statusPublished - Nov 2021

Abstract

In this work, a novel type of phosphorus containing hyperbranched polysiloxane (P-HBPSi) was synthesized by sol–gel method, and then utilized to functionalize graphene oxide (P-HBPSi@GO). The P-HBPSi@GO hybrids were mixed with TPU by melt compounding. The SEM observation revealed that the P-HBPSi@GO dispersed homogeneously in the TPU matrix with good compatibility. The TPU/P-HBPSi@GO-2.0 maintained high ductility with elongation at break of 1750.8%. The peak heat release rate and total heat release of TPU/P-HBPSi@GO-2.0 were reduced by 63.5% and 20.9%, respectively. In addition, the peak smoke production rate and total smoke production of TPU nanocomposites were also reduced dramatically by 58.3% and 36.4%, respectively. The production of phosphorus free radical scavengers in the gas phase and the barrier effects of GO nanosheets, catalytic charring and the unique Si-O-Si framework of P-HBPSi flame retardant in the condensed phase contributed to the outstanding flame retardancy and toxic gas suppression of TPU/P-HBPSi@GO nanocomposites.

Research Area(s)

  • Flame retardant, Graphene oxide, Hyperbranched polysiloxane, Thermoplastics polyurethane

Citation Format(s)