Anticorrosive coating of polyesteramide resin by functionalized ZnO- Al2O3-Fly ash composite and functionalized multiwalled carbon nanotubes

•Synthesis of polyesteramide resin.•Synthesis of ZnO-Al2O3-fly ash composite.•Functionalization of ZnO-Al2O3-fly ash composite and MWCNT.•Incorporation of functionalize ZnO-Al2O3-fly ash composite and MWCNT in polyesteramide-epoxy coating.•Evaluation of its mechanical, chemical, thermal and anticorr...

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Bibliographic Details
Published in:Progress in organic coatings 2016-10, Vol.99, p.240-250
Main Authors: More, Aarti P., Mhaske, Shashank T.
Format: Article
Language:English
Subjects:
Anticorrosive coating
Ashes
Carbon nanotubes
Chemical modication
Coating
Corrosion prevention
Corrosion resistance
Multi wall carbon nanotubes
Polyesteramide
Polyesteramides
Polymers
Resins
Zinc oxide composites
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Summary:•Synthesis of polyesteramide resin.•Synthesis of ZnO-Al2O3-fly ash composite.•Functionalization of ZnO-Al2O3-fly ash composite and MWCNT.•Incorporation of functionalize ZnO-Al2O3-fly ash composite and MWCNT in polyesteramide-epoxy coating.•Evaluation of its mechanical, chemical, thermal and anticorrosive properties. In accordance to synthesis of sustainable coating, the carboxyl terminated Polyesteramide resin is synthesized from fatty amide of palm oil. To improve the performance of the coating the ZnO-Al2O3-fly ash composite and functional Multiwall Carbon nanotubes (MWCNTs) were added to the system. The ZnO-Al2O3-fly ash composite was treated with amine-silane to develop the amino functionality on the periphery. The MWCNT’s were treated to develop the carboxyl functionality. The presence of functionality on the ZnO-Al2O3-fly ash composite and MWCNT enable the chemical bonding of same to the coating matrix, improving the performance of the coating. ZnO-Al2O3- fly ash composites were characterised by FTIR, SEM analysis and XRD to confirm the modification. Also singular and synergistic effect chemically bonded nanocomposite to the coating system was studied by varying the composite ratio as 5% (w/w) & 10% (w/w), MWCNTs ratio individually 0.25% (w/w) & 0.5% (w/w) and in combination of both. The anticorrosive properties were improved, impedance value increases from 100M (ohms) to 10G (ohms) in EIS measurement. As well as hardness of the coating increases from H to 4H, scratch resistance increases from 2kg to 3.1kg.
ISSN:0300-9440
1873-331X
DOI:10.1016/j.porgcoat.2016.06.005