Synergistic effect of polypyrrole functionalized graphene oxide and zinc phosphate for enhanced anticorrosion performance of epoxy coatings

Zhu, Qingsong; Li, En; Liu, Xianhu; Song, Weiqiang; Zhao, Mingyang; Zi, Lisen; Wang, Xinchao; Liu, Chuntai

doi:10.1016/j.compositesa.2019.105752

Cited by 60 publications

(23 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The increased Fe 3+ and Fe 2+ ions are converted to a passive lm of an oxide layer (Fe 3 O 4 and Fe 2 O 3 ). 176 Sathyanarayanan et al developed polyaniline pigmented epoxy and vinyl acrylic organic coating, and evaluation of its performance was carried out on stainless steel. From their studies, they pointed out that the electrochemical impedance spectroscopy value initially decreases gradually; then the impedance value increases with an increase in exposure time.…”

Section: Corrosion Inhibition Applicationsmentioning

confidence: 99%

Conducting polymers: a comprehensive review on recent advances in synthesis, properties and applications

2021

View full text Add to dashboard Cite

show abstract

Section: Corrosion Inhibition Applicationsmentioning

confidence: 99%

Conducting polymers: a comprehensive review on recent advances in synthesis, properties and applications

2021

View full text Add to dashboard Cite

show abstract

“…GO-PPy composites were prepared according to our previous reports. [20,21] Briefly, these composites were prepared by in-situ polymerization of Py on the surface of GO.…”

Section: Experimental 21 Synthesis Of Go-ppymentioning

confidence: 99%

Polypyrrole Functionalized Graphene Oxide Accelerated Zinc Phosphate Coating under Low-Temperature

Zhu¹,

Liu²,

Wang³

et al. 2020

ES Mater. Manuf.

Self Cite

View full text Add to dashboard Cite

Zinc phosphate coating, as an effective and fast anticorrosion technique for the metals, have been developed rapidly in recent years. However, it is still a challenge to synthesize a low energy, environmentally friendly and efficient accelerator through a facile method. Herein, as a new accelerator, polypyrrole (PPy) functionalized graphene oxide (GO-PPy) nanocomposites were prepared by in-situ process to grow PPy film on GO surface, Incorporation of GO-PPy into phosphate baths accelerated the phosphating process of phosphate coating and promoted the nucleation and growth of phosphate crystals, achieving stronger corrosion resistance, which were confirmed by electrochemical measures and morphologies characteristic of the phosphate coating. Additionally, when the concentration of GO-PPy in the phosphate baths reached up 1.2 g/L, the phosphate coating possessed the most compact and uniform phosphate crystals and the best corrosion protection performance. Finally, the special mechanism of the phosphate process was discussed. This work introduces a new, low-energy, facile, environmentally friendly and alternative accelerator for the preparation of phosphate coatings.

show abstract

“…Therefore, a clear corrosion mechanism of carbon steel and corresponding effective corrosion inhibition strategy are highly desired. In recent years, conductive polymer coatings such as polypyrrole (PPy) and polyaniline (PANI) against corrosion of metals and alloys has received much attention 8,9 . Among these conductive polymers, PPy, as a commonly used conductive polymer, shows the advantages of low toxicity, easy fabrication, high conductivity and excellent environmental stability 8,10 .…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, conductive polymer coatings such as polypyrrole (PPy) and polyaniline (PANI) against corrosion of metals and alloys has received much attention 8,9 . Among these conductive polymers, PPy, as a commonly used conductive polymer, shows the advantages of low toxicity, easy fabrication, high conductivity and excellent environmental stability 8,10 . In addition to the physical barrier, which was employed as the mainly corrosion inhibition mechanism of the polymeric coatings, PPy possesses an anodic protection for metals through accelerating the rmly metal oxides layer formation and shifting its potential to the passive state [11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

Multidimensional Study On The Corrosion Inhibition of Polypyrrole-Chitosan (PPy-CTS) Composites For Carbon Steel In Acid Medium

Chen

Gao

Wang

et al. 2021

Preprint

View full text Add to dashboard Cite

The acidic corrosion of carbon steel is a great concern, which has caused serious economic losses on a global scale. Therefore, the exploitation of corrosion inhibition strategy for carbon steel and an in-depth study on its mechanism are of vital importance. Here we have developed a mixed type corrosion inhibitor of PPy-CTS, which incorporated the good solubility and adsorption capacity of chitosan (CTS) into the excellent corrosion inhibition performance of polypyrrole (PPy) by in-situ polymerization of pyrrole on CTS. The corrosion inhibition performance of PPy-CTS composites as a potential corrosion inhibitor for Q235 carbon steel in 1 M HCl solution was investigated by electrochemical (potentiodynamic polarization curve and AC impedance spectroscopy) and surface morphological (scanning electron microscopy and water droplet contact angle) characterization. The results revealed that PPy-CTS with the optimal concentration of 250 ppm achieved the highest corrosion inhibition efficiency of 91.1%. Subsequently, the corrosion inhibition mechanism was furtherly studied. Gibbs free energy obtained from the Langmuir isotherm model suggested that the absorption of PPy-CTS corrosion inhibitor on Q235 steel in 1 M HCl solution belonged to a combined type of physisorption and chemisorption, which resulted in the formation of a physical barrier preventing the carbon steel from corrosion. In addition, the conductive polymer PPy of corrosion inhibitor possessed an oxide-film anodic protection for carbon steel. Ultimately, PPy-CTS effectively suppressed the corrosion reaction of carbon steel in harsh acidic environment through the synergistic effect of physical barrier and anodic protection.

show abstract

Synergistic effect of polypyrrole functionalized graphene oxide and zinc phosphate for enhanced anticorrosion performance of epoxy coatings

Cited by 60 publications

References 40 publications

Conducting polymers: a comprehensive review on recent advances in synthesis, properties and applications

Conducting polymers: a comprehensive review on recent advances in synthesis, properties and applications

Polypyrrole Functionalized Graphene Oxide Accelerated Zinc Phosphate Coating under Low-Temperature

Multidimensional Study On The Corrosion Inhibition of Polypyrrole-Chitosan (PPy-CTS) Composites For Carbon Steel In Acid Medium

Contact Info

Product

Resources

About