A novel phosphorus-containing MoS2 hybrid : Towards improving the fire safety of epoxy resin

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Shuguang Wang
  • Keqing Zhou
  • Lian Yin
  • Yu Zhong
  • Xin Ma

Detail(s)

Original languageEnglish
Pages (from-to)210-219
Journal / PublicationJournal of Colloid and Interface Science
Volume550
Online published2 May 2019
Publication statusPublished - 15 Aug 2019

Abstract

Layered molybdenum disulfide (MoS2) has received significant attention due to various applications, such as catalysis, supercapacitors, batteries, and polymer nanocomposites. However, developing highly effective MoS2-based polymer nanocomposites with superior dispersion resulting in improved thermal and flame retardant properties still remains a huge challenge. Herein, a kind of MoS2 hybrid was synthesized by the reaction of exfoliated MoS2 nanosheets with (4-carboxybutyl) triphenylphosphonium bromide (TPP) via a cost-effective method, where TPP serves as a synergistic agent to further improve the dispersion and flame retardant efficiency of MoS2. Then the TPP-MoS2 hybrid was added to epoxy resin (EP) matrix to improve its fire safety properties. The hybrid was characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR), transmission electron microscopy (TEM) and thermogravimetric analysis (TGA). The TPP-MoS2 hybrid was uniformly dispersed in the matrix, leading to significant improvement of fire safety. After the addition of 2 wt% TPP-MoS2 , the char residue of the EP nanocomposites was increased by 46% compared with that of pure EP, while the peak heat release rate (PHRR) and total smoke release (TSR) were reduced by 26% and 21%, respectively. The superior dispersion of the hybrid improved the physical barrier effect of MoS2 nanosheets thereby delaying the diffusion of volatile pyrolysis products and the transmission of heat and oxygen to underlying material.

Research Area(s)

  • MoS2 nanosheets, Surface modification, Flame retardancy, Epoxy resin

Citation Format(s)

A novel phosphorus-containing MoS2 hybrid : Towards improving the fire safety of epoxy resin. / Wang, Shuguang; Yu, Bin; Zhou, Keqing; Yin, Lian; Zhong, Yu; Ma, Xin.

In: Journal of Colloid and Interface Science, Vol. 550, 15.08.2019, p. 210-219.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review