Multi-Functional Cardanol Triazine Schiff Base Polyimine Additives for Self-Healing and Super-Hydrophobic Epoxy of Steel Coating

The designing of multifunctional materials in system-level efficiency is one of the main targets and a hot topic for the application of novel green or bio-based materials and structures. In this work, the chemical structure of bio-based cardanol that was derived from cashew oil was modified through...

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Bibliographic Details
Published inCoatings (Basel) Vol. 10; no. 4; p. 327
Main Authors Atta, Ayman M., A. Ahmed, Mona, A. Al-Lohedan, Hamad, El-Faham, Ayman
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.04.2020
Subjects
Additives
Adhesive strength
Biological materials
Chromatography
Coatings
Condensation polymerization
Contact angle
Corrosion prevention
Curing
Epoxy resins
Ethanol
Fourier transforms
Humidity
Hydrophobicity
Imines
Investigations
Monomers
Multifunctional materials
Nitrogen
NMR spectroscopy
Polyamines
Polyazomethines
Polymers
Seawater
Self healing materials
Spectrum analysis
Substrates
United States > US
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Summary:The designing of multifunctional materials in system-level efficiency is one of the main targets and a hot topic for the application of novel green or bio-based materials and structures. In this work, the chemical structure of bio-based cardanol that was derived from cashew oil was modified through a reaction with a bishydrazino-s-triazine derivative followed by condensation polymerization or reaction with terephthaldehyde to obtain a Schiff base polymer. The chemical structures of the modified cardanol-bishydrazino-s-triazine-based monomer and the Schiff base polymer were confirmed from FTIR and NMR spectroscopy analyses. The modified cardanol bishydrazino-s-triazine monomer and polymer were added with different weight ratios during the curing of the epoxy/polyamine hardener to improve the thermal, mechanical, and anti-corrosion characteristics of the epoxy coating of a steel substrate. The data elucidated that the presence of a cardanol bishydrazino-s-triazine monomer and polymer improves the thermal, mechanical, adhesion, and anti-corrosion characteristics of epoxy coatings after exposure for more than 1500 h. The presence of a cardanol- bishydrazino-s-triazine polymer more than 3 wt.% during the curing of epoxy networks produces superhydrophobic and self-healing epoxy coatings. The modification of the epoxy coating with the cardanol bishydrazino-s-triazine polymer improves the seawater contact angle by more than 150° and the adhesion strength of the epoxy coating with the steel surface.
ISSN:2079-6412
2079-6412
DOI:10.3390/coatings10040327