Fabrication of FDTS-modified PDMS-ZnO nanocomposite hydrophobic coating with anti-fouling capability for corrosion protection of Q235 steel

Arukalam, Innocent O.; Oguzie, Emeka E.; Li, Ying

doi:10.1016/j.jcis.2016.08.064

Cited by 104 publications

(40 citation statements)

References 44 publications

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“…It was concluded that the adsorption properties related to the titanium substrate were fully suppressed, showing potential for antifouling surfaces in the biomedical field. Coatings combining both anti-fouling and anti-corrosion functions have also been reported [265,[285][286][287]. Arukalam et al, for instance, prepared perfluorodecyltrichlorosilane-based poly(dimethylsiloxane)-ZnO coatings for fouling and corrosion mitigation.…”

Section: Sol-gel Coatings With Anti-fouling Functionmentioning

confidence: 99%

Hybrid Sol–gel Coatings for Corrosion Mitigation: A Critical Review

Figueira

2020

Polymers

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The corrosion process is a major source of metallic material degradation, particularly in aggressive environments, such as marine ones. Corrosion progression affects the service life of a given metallic structure, which may end in structural failure, leakage, product loss and environmental pollution linked to large financial costs. According to NACE, the annual cost of corrosion worldwide was estimated, in 2016, to be around 3%-4% of the world's gross domestic product. Therefore, the use of methodologies for corrosion mitigation are extremely important. The approaches used can be passive or active. A passive approach is preventive and may be achieved by emplacing a barrier layer, such as a coating that hinders the contact of the metallic substrate with the aggressive environment. An active approach is generally employed when the corrosion is set in. That seeks to reduce the corrosion rate when the protective barrier is already damaged and the aggressive species (i.e., corrosive agents) are in contact with the metallic substrate. In this case, this is more a remediation methodology than a preventive action, such as the use of coatings. The sol-gel synthesis process, over the past few decades, gained remarkable importance in diverse areas of application. Sol-gel allows the combination of inorganic and organic materials in a single-phase and has led to the development of organic-inorganic hybrid (OIH) coatings for several applications, including for corrosion mitigation. This manuscript succinctly reviews the fundamentals of sol-gel concepts and the parameters that influence the processing techniques. The state-of-the-art of the OIH sol-gel coatings reported in the last few years for corrosion protection, are also assessed. Lastly, a brief perspective on the limitations, standing challenges and future perspectives of the field are critically discussed.Polymers 2020, 12, 689 The development of OIH sol-gel coatings, based on siloxanes, for corrosion mitigation, has been widely studied in the last few years [2,31,[36][37][38]. Numerous studies have been conducted since the early 1990s [39,40]. The studies performed showed that siloxanes were effective in mitigating the corrosion processes of different metallic substrates. This development was mainly due to the need for alternative environmentally friend materials and processes to replace the traditional chromium-based pre-treatments. Hexavalent chromium (Cr (VI)) is carcinogenic and shows high environmental toxicity and its use has been forbidden since 2006. However, Cr(VI) based pre-treatments improve the coating adherence to the substrate and are effective corrosion inhibitors [41][42][43] which make its replacement challenging. The use of the sol-gel method to produce OIH coatings for corrosion mitigation suits the main requirements of what should be an environmentally friendly process (i.e., excludes washing stages; it is a waste-free method) and allows one to obtain coatings with high purity and specific pore volumes and surface areas. Since it is a mild synthesis...

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Section: Sol-gel Coatings With Anti-fouling Functionmentioning

confidence: 99%

Hybrid Sol–gel Coatings for Corrosion Mitigation: A Critical Review

Figueira

2020

Polymers

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“…As for the adhesion strength measurement, a Defelsko Positest pull-off adhesion tester was used to evaluate the adhesion strength of the coatings without and with 5 wt% microcapsules as previously described elsewhere. [25] 3 | RESULTS AND DISCUSSION 3.1 | Statistical analysis of particle size using central composite design (CCD)…”

Section: Salt Spray Corrosion and Adhesion Strength Testsmentioning

confidence: 99%

Optimizing maleic anhydride microcapsules size for use in self‐healing epoxy‐based coatings for corrosion protection of aluminum alloy

Njoku

Arukalam

Bai

et al. 2018

Materials & Corrosion

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Due to the significance of self‐healing coatings in recent years, there has been increasing desire to optimize process parameters for effective control of functions of the coatings for durable application. Among various approaches for achieving desired optimized properties, the use of central composite design (CCD) of the response surface methodology (RSM) remains an effective and reliable technique. Thus, the objective of this study was to develop an appropriate model for optimization of size of microcapsule to be used in synthesis of maleic anhydride‐based microcapsules for self‐healing function in defective epoxy coating. In this regard, a model was generated to estimate the effect of two process parameters (stirring speed and reaction time at constant temperature). The average size of microcapsules obtained experimentally (24.46 μm) was closely comparable to 25.27 μm obtained by the theoretical technique. Microcapsules were prepared based on these optimized size of microcapsule and the synthesized microcapsules were characterized. Also, effectiveness of these microcapsules in coatings was characterized by studying their adhesion performance, self‐healing functions under salt spray corrosion test, and anti‐corrosion by use of electrochemical impedance spectroscopy (EIS). Successful self‐healing function has been demonstrated by reason of anti‐corrosion effectiveness of maleic anhydride‐filled microcapsules.

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“…The unique combination of organic coatings and metallic materials can be merged to design cost‐effective anticorrosive and antifouling marine coatings . However, all polymer coatings are subjected to the potential attack of oxygen, water, and aggressive ions because of their strong affinity towards water and polar groups, which facilitate electrochemical corrosion and loss of adhesion at coating‐metal interface . The interaction of polymer coatings towards water and marine organisms can be suppressed by blending them with low surface energy polymers such as polydimethylsiloxane (PDMS) .…”

Section: Introductionmentioning

confidence: 99%

“…However, all polymer coatings are subjected to the potential attack of oxygen, water, and aggressive ions because of their strong affinity towards water and polar groups, which facilitate electrochemical corrosion and loss of adhesion at coating‐metal interface . The interaction of polymer coatings towards water and marine organisms can be suppressed by blending them with low surface energy polymers such as polydimethylsiloxane (PDMS) . PDMS exhibits nonpolarity, nontoxicity, superior thermal stability, excellent moisture and weather resistance, flame retardancy, hydrophobicity, and high flexibility .…”

Section: Introductionmentioning

confidence: 99%

Development of multifunctional polydimethylsiloxane (PDMS)‐epoxy‐zinc oxide nanocomposite coatings for marine applications

Verma

Das²,

Mohanty

et al. 2019

Polymers for Advanced Techs

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Multifunctional epoxy-polydimethylsiloxane nanocomposite coatings with antifouling and anticorrosion characteristics have been developed via in situ polymerization method at different loading (1, 3, and 6.5 wt.%) of ZnO nanoparticles to cater marine applications. A detailed comparative analysis has been carried out between epoxy-polydimethylsiloxane control (EPC) and ZnO-reinforced coatings to determine the influence of ZnO loading on various properties. The incorporation of ZnO in EPC led to increase in root mean square (RMS) roughness to 126.75 nm and improved hydrophobicity showing maximum contact angle of 123.5°with low surface energy of 19.75 mN/m of nanocomposite coating as compared with control coating. The differential scanning calorimetry (DSC) result indicated improved glass transition temperature of nanocomposite coatings with highest T g obtained at 83.69°C in case of 1 wt.% loading of ZnO. The increase in hydrophobicity of the system was accompanied by upgraded anticorrosion performance exhibiting 98.8% corrosion inhibition efficiency (CIE) as compared with control coating and lower corrosion rate of 0.12 × 10 −3 mm/year. The Taber abrasion resistance and pull-off adhesion strength results indicated an increment of 34.7% and 150.7%, respectively, in case of nanocomposite coating as compared with the control coating.The hardness of nanocomposite coatings was also improved, and maximum hardness was found to be 65.75 MPa for nanocomposite coating with 1 wt.% of ZnO.Our study showed that the nanocomposite coating was efficient in inhibiting accumulation of marine bacteria and preventing biofouling for more than 8 months. The developed environment-friendly and efficient nanocomposite material has a promising future as a high-performance anticorrosive and antifouling coating for marine applications. | MATERIALSEP resin, i.e., DGEBA, Araldite GY-251 with EP equivalent value ranging from 180 to 189 g/eq and EP value of 5.30 to 5.55 eq/Kg, and hardener triethylene tetra amine (TETA, Aradur HY-951) with amine value 24.04 g/eq were purchased from M/s. Huntsman Int Pvt Ltd, Mumbai, India. PDMS-hydroxy terminated (h-PDMS) with dynamic viscosity of 25 centistokes and density value 0.95 g/mL at temperature of 25°C and APTES (3-aminopropyltriethoxysilane), assay (99%) and density value of 0.946 g/mL at 25°C (lit.) were procured from M/s. Sigma Aldrich Pvt Ltd, India. ZnO nanoparticle with average particle size of approximately 20 nm were purchased from M/s. Sisco

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Fabrication of FDTS-modified PDMS-ZnO nanocomposite hydrophobic coating with anti-fouling capability for corrosion protection of Q235 steel

Cited by 104 publications

References 44 publications

Hybrid Sol–gel Coatings for Corrosion Mitigation: A Critical Review

Hybrid Sol–gel Coatings for Corrosion Mitigation: A Critical Review

Optimizing maleic anhydride microcapsules size for use in self‐healing epoxy‐based coatings for corrosion protection of aluminum alloy

Development of multifunctional polydimethylsiloxane (PDMS)‐epoxy‐zinc oxide nanocomposite coatings for marine applications

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