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Journal of Coatings Technology and Research

, Volume 12, Issue 1, pp 1–35 | Cite as

Organic–inorganic hybrid sol–gel coatings for metal corrosion protection: a review of recent progress

  • R. B. FigueiraEmail author
  • C. J. R. Silva
  • E. V. Pereira
Review Paper

Abstract

This paper is a review of the most recent and relevant achievements (from 2001 to 2013) on the development of organic–inorganic hybrid (OIH) coatings produced by sol–gel-derived methods to improve resistance to oxidation/corrosion of different metallic substrates and their alloys. This review is focused on the research of OIH coatings based on siloxanes using the sol–gel process conducted at an academic level and aims to summarize the materials developed and identify perspectives for further research. The fundamentals of sol–gel are described, including OIH classification, the interaction with the substrate, their advantages, and limitations. The main precursors used in the synthesis of OIH sol–gel coatings for corrosion protection are also discussed, according to the metallic substrate used. Finally, a multilayer system to improve the resistance to corrosion is proposed, based on OIH coatings produced by the sol–gel process, and the future research challenges are debated.

Keywords

Coatings Organic–inorganic hybrids Corrosion Sol–gel method 

Abbreviations

AEA

Aliphatic epoxy acrylate

Al(OsBu)3

Aluminum tri-sec-butoxide

BTAH

1,2,3-Benzotriazole

BTMS

n-Butyltrimethoxysilane

CCCs

Chemical conversion coatings

DETA

Diethylenetriamine

DGEBA

Poly(bisphenol A-co-epichlorohydrin)

DMTMS

Dimethyltrimethoxysilane

ECO

Epoxidized castor oil

EGDMA

Ethyleneglycoldimethacrylate

ER

Epoxy resin

ERE

Epoxy-resin–ester

GMA

Glycidylmethacrylate

HDGS

Hot-dip galvanized steel

HEMA

2-Hydroxyethylmethacrylate

HMDIC

Hexamethylene diisocyanate

HMDS

Hexamethyldisilozane

HEPA

2,2′-Bis(4-β-hydroxy ethoxy) phenyl propane

HTMS

n-Hexyltrimethoxysilane

IBTMS

Isobutyltrimethoxysilane

IOTMS

Isooctyltrimethoxysilane

IPDIC

Isophorone diisocyanate

LDF

Linseed diol fattyamide

MAEP

2-Methacryloyloxyethylphosphate

MAPTES

3-Methacryloxy propyl triethoxysilane

MMA

Methylmethacrylate

n-PTMS

n-Propyl trimethoxysilane

OIH

Organic–inorganic hybrid

OTES

Octyltriethoxysilane

OTMS

Octyltrimethoxysilane

PAPTES

N-Phenyl-3-aminopropyltriethoxysilane

PDMSU

Bis[(ureapropyl)triethoxysilane]bis(propyl)-terminated-polydimethylsiloxane 1000

PDMMS

Polidymetilmetoxysilane

PFOTES

1H,1H,2H,2H-Per-fluorooctyltriethoxysilane

PR

Polyester resin

SiO2-NP

Silica nanoparticles

SNAP

Self-assembled nanophase particle

TBADP

Titanium(IV)-bis(acac)diisopropoxide

TDIC

Toluene diisocyanate

TEPA

Tetraethylenepentamine

TETA

Triethylenetetramine

TIBMS

Triisobutoxy(methyl)silane

TIPMS

Triisopropoxy(methyl)silane

TMCS

Trimethylchlorosilane

TMSPh

Tris-(trimethylsilyl)phosphate

ZrBTO

Zirconium(IV) butoxide

Notes

Acknowledgments

The authors would like to gratefully acknowledge the financial support from Fundação para a Ciência e Tecnologia (FCT) for the PhD grant SFRH/BD/62601/2009, the financial support by Centro de Química [project F-COMP-01-01024-FEDER-022716 (ref. Pest-C/Qui/UI0686/2011)-FEDER-COMPETE] and EU COST action MP1202: HINT - Rational design of hybrid organic-inorganic interfaces: the next step towards functional materials.

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Copyright information

© American Coatings Association 2014

Authors and Affiliations

  • R. B. Figueira
    • 1
    • 2
    Email author
  • C. J. R. Silva
    • 2
  • E. V. Pereira
    • 1
  1. 1.Laboratório Nacional de Engenharia Civil (LNEC)LisbonPortugal
  2. 2.Centro de QuímicaUniversidade do MinhoBragaPortugal

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