Synthesis of Co3(HPO4)2(OH)2 Nanosheets and Its Synergistic Effect With Intumescent Flame Retardants in Ethylene-Vinyl Acetate Copolymer

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Author(s)

  • Jiajia Liu
  • Keqing Zhou
  • Gang Tang
  • Bibo Wang
  • Zhou Gui
  • Yuan Hu

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)238-246
Journal / PublicationPolymer Composites
Volume39
Issue number1
Online published29 Jan 2016
Publication statusPublished - Jan 2018

Link(s)

DOI

DOI
Check@CityULib
Link to Scopus https://www.scopus.com/record/display.uri?eid=2-s2.0-84956639607&origin=recordpage
Permanent Link https://scholars.cityu.edu.hk/en/publications/publication(11cee69a-f102-43cc-9a20-c70f0552a701).html

Abstract

In the present work, Co3(HPO4)2(OH)2 nanosheets were synthesized by hydrothermal method, and its structure was characterized by X-ray diffraction and transmission electron microscopy. Then it was used as a synergistic agent with intumescent flame retardant (IFR) in ethylene-vinyl acetate (EVA) copolymer. Thermogravimetric analysis data indicated that the addition of Co3(HPO4)2(OH)2 nanosheets into the EVA/IFR composites could increase the char yields. Cone calorimeter results revealed that Co3(HPO4)2(OH)2 in combination with IFR obviously changed the thermal decomposition behavior of EVA and formed a protective char layer on the surface of the composites, consequently leading to effective reduction in the flammability parameters, such as the heat release rate, total heat release. With the addition of 1 wt% Co3(HPO4)2(OH)2 and 34 wt% IFR, the LOI value increased to 26.5%, and the system could reach V-0 rating. Laser Raman spectra of the residual char showed that the more graphitic char was formed with increasing the loading of Co3(HPO4)2(OH)2. Scanning electron microscopy results demonstrated that the incorporation of Co3(HPO4)2(OH)2 promoted the EVA/IFR system to form a dense and continuous char layer. POLYM. COMPOS., 39:238–246, 2018.

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Publication fingerprints text

100
Copolymer Material Science
100
Flame Retardant Material Science
100
Synergistic Effect Keyphrases
100
Ethylene-vinyl Acet... Keyphrases
100
Intumescent Flame R... Keyphrases
100
synthesis INIS
100
ethylene INIS
100
flames INIS
100
copolymers INIS
100
vinyl acetate INIS
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Citation Format(s)

[ RIS ] [ BibTeX ]
Synthesis of Co3(HPO4)2(OH)2 Nanosheets and Its Synergistic Effect With Intumescent Flame Retardants in Ethylene-Vinyl Acetate Copolymer. / Liu, Jiajia; Zhou, Keqing; Tang, Gang et al.
In: Polymer Composites, Vol. 39, No. 1, 01.2018, p. 238-246.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review