Effects of Halloysite Nanotube Reinforcement in Expandable Graphite Based Intumescent Fire Retardant Coatings Developed Using Hybrid Epoxy Binder System

Qandeel Fatima Gillani; Faiz Ahmad; M.I. Abdul Mutalib; Puteri S.M. Megat-Yusoff; Sami Ullah

doi:10.1007/s10118-018-2148-1

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Effects of Halloysite Nanotube Reinforcement in Expandable Graphite Based Intumescent Fire Retardant Coatings Developed Using Hybrid Epoxy Binder System

ARTICLE | Updated：2021-02-18

- Effects of Halloysite Nanotube Reinforcement in Expandable Graphite Based Intumescent Fire Retardant Coatings Developed Using Hybrid Epoxy Binder System
- Chinese Journal of Polymer Science Vol. 36, Issue 11, Pages: 1286-1296(2018)
- Affiliations：
  
  a.Mechanical Engineering Department, Universiti Teknologi PETRONAS, 31750 Tronoh, Perak, Malaysia
  b.Chemical Engineering Department, Universiti Teknologi PETRONAS, 31750 Tronoh, Perak, Malaysia
  c.Department of Mechanical Engineering, University of Gujrat, 50700 Gujrat, Pakistan
- Author bio：
  
  faizahmad@utp.edu.my
- Funds：
- DOI：10.1007/s10118-018-2148-1
  CLC：
- Received：07 February 2018，
  
  Revised：2018-4-10，
  
  Accepted：01 May 2018，
  
  Online First：14 June 2018，
  
  Published：2018-11
- Accepted：
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Citation: Gillani, Q. F.; Ahmad, F.; Mutalib, M. I. A.; Megat-Yusoff, P. S. M.; Ullah, S. Effects of Halloysite Nanotube Reinforcement in Expandable Graphite Based Intumescent Fire Retardant Coatings Developed Using Hybrid Epoxy Binder System. Chinese J. Polym. Sci. 2018, 36(11), 1286–1296.

Qandeel Fatima Gillani, Faiz Ahmad, M.I. Abdul Mutalib, et al. Effects of Halloysite Nanotube Reinforcement in Expandable Graphite Based Intumescent Fire Retardant Coatings Developed Using Hybrid Epoxy Binder System[J]. Chinese Journal of Polymer Science, 2018, 36(11): 1286-1296.
Citation: Gillani, Q. F.; Ahmad, F.; Mutalib, M. I. A.; Megat-Yusoff, P. S. M.; Ullah, S. Effects of Halloysite Nanotube Reinforcement in Expandable Graphite Based Intumescent Fire Retardant Coatings Developed Using Hybrid Epoxy Binder System. Chinese J. Polym. Sci. 2018, 36(11), 1286–1296. DOI： 10.1007/s10118-018-2148-1.

Qandeel Fatima Gillani, Faiz Ahmad, M.I. Abdul Mutalib, et al. Effects of Halloysite Nanotube Reinforcement in Expandable Graphite Based Intumescent Fire Retardant Coatings Developed Using Hybrid Epoxy Binder System[J]. Chinese Journal of Polymer Science, 2018, 36(11): 1286-1296. DOI： 10.1007/s10118-018-2148-1.

摘要

Abstract

In this study

the effects of halloysite nanotubes (HNTs) reinforcement in expandable graphite based intumescent fire retardant coatings (IFRCs) developed using a polydimethylsiloxane (PDMS)/phenol BA epoxy system were investigated. Intumescent coating formulations were developed by incorporating different weight percentages of HNTs and PDMS in basic intumescent ingredients (ammonium polyphosphate/melamine/boric acid/expandable graphite

APP/MEL/BA/EG). The performance of intumescent formulations was investigated by furnace fire test

Bunsen burner fire test

field emission electron microscopy (FESEM)

thermogravimetric analysis (TGA)

transmission electron microscopy (TEM)

and Fourier transform infrared analysis (FTIR). The Bunsen burner fire test results indicated that the fire performance of HNTs and PDMS reinforced intumescent formulation has improved due to the development of silicate network over the char residue. Improved expansion in char residue was also noticed in the formulation

SH(3)

due to the minimum decomposition of char carbon. FESEM and TEM results validated the development of silicate network over char layer of coating formulations. A considerable mass loss difference was noticed during thermal gravimetric analysis (TGA) of intumescent coating formulations. Reference formulation

SH(0) with no filler

degraded at 300 °C and lost 50% of its total mass but SH(3)

due to synergistic effects between PDMS and HNTs

degraded above 400 °C and showed the maximum thermal stability. XRD analysis showed the development of thermally stable compound mulltie

due to the synergism of HNTs and siloxane during intumescent reactions

which enhanced fire performance. FTIR analysis showed the presence of incorporated siloxane and silicates bonds in char residue

which endorsed the toughness of intumescent char layer produced. Moreover

the synergistic effect of HNTs

PDMS

and other basic intumescent ingredients enhanced the polymer cross-linking in binder system and improved fire resistive performance of coatings.

关键词

Keywords

references

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