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

Journal Article

2020

1,3, Ayman M. Atta 1,2, *, Mona A. Ahmed 2, Hamad A. Al-Lohedan 1 and Ayman El-Faham . 2020

Abstract: The designing of multifunctional materials in system-level eciency 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 Schi base polymer. The chemical

structures of the modified cardanol-bishydrazino-s-triazine-based monomer and the Schi base

polymer were confirmed from FTIR and NMR spectroscopy analyses. The modified cardanol

bishydrazino-s-triazine monomer and polymer were added with di erent 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.

• Publication Work Type: بحث علمي
• Volume Number: 327
• Issue Number: 10
• Magazine \ Newspaper: Coatings 2020, 10, 327