scholarly journals Release kinetics study and anti-corrosion behaviour of a pH-responsive ionic liquid-loaded halloysite nanotube-doped epoxy coating

RSC Advances ◽  
2020 ◽  
Vol 10 (22) ◽  
pp. 13174-13184 ◽  
Author(s):  
Yap Jen Yang ◽  
Sarini Mat Yaakob ◽  
Nurul Ekmi Rabat ◽  
Muhammad Rashid Shamsuddin ◽  
Zakaria Man
Keyword(s):  
Corrosion Resistance ◽  
Ionic Liquid ◽  
Epoxy Resin ◽  
Corrosion Behaviour ◽  
Release Kinetics ◽  
Halloysite Nanotubes ◽  
Epoxy Coating ◽  
Kinetics Study ◽  
Ph Responsive ◽  
Halloysite Nanotube

Enhanced corrosion resistance was obtained for steel coated with epoxy resin doped with pH-responsive halloysite nanotubes loaded with ionic liquid.

pH-Responsive nanovalves based on encapsulated halloysite for the controlled release of a corrosion inhibitor in epoxy coating

RSC Advances ◽  
2015 ◽  
Vol 5 (110) ◽  
pp. 90609-90620 ◽  
Author(s):  
Yi He ◽  
Wei Xu ◽  
Ran Tang ◽  
Chunli Zhang ◽  
Qiangbin Yang
Keyword(s):  
Controlled Release ◽  
Corrosion Inhibitor ◽  
Halloysite Nanotubes ◽  
Tetraethyl Orthosilicate ◽  
Epoxy Coating ◽  
Ph Responsive

Halloysite nanotubes (HNTs) were applied as corrosion inhibitor (benzotriazole, BTA) hosts, which were encapsulated by using tetraethyl orthosilicate (TEOS) and modified by (3-aminopropyl)triethoxysilane (APTES).

scholarly journals CORROSION RESISTANCE AND MECHANICAL PROPERTIES OF TiO2 NANOTUBES / EPOXY COATING ON STEEL SPCC-JISG 3141

2018 ◽  
Vol 55 (5B) ◽  
pp. 203
Author(s):  
Duong Thi Hong Phan
Keyword(s):  
Corrosion Resistance ◽  
Titanium Dioxide ◽  
Epoxy Resin ◽  
Tio2 Nanotubes ◽  
Mechanical Performance ◽  
In Situ Polymerization ◽  
Salt Spray ◽  
Epoxy Coating ◽  
Test Model ◽  
Titanium Dioxide Nanotubes

     Titanium dioxide nanotubes (TNTs) have been considered the promising nanostructures employed for many practical applications such as biomedical, photonic and optoelectronic devices. Coatings prepared from epoxy-nano-TiO2 nanotubes synthesized by in situ polymerization were found to exhibit excellent corrosion resistance much superior to epoxy resin in aggressive environments. The corrosion studies were carried out on steel SPCC JISG 3141 plates coated with 5 wt % and without of TiO2 nanotubes (TNTs). The synthesis of titanium dioxide nanotubes (TNTs) using hydrothermal method was investigated. The synthesized TNTs were characterized with Fourier Transform Infrared Spectroscopy (FTIR), Brunauer-Emmett-Teller (BET) specific area surface test, X-ray diffraction (XRD) and Transmission Electron Microscope (TEM) imaging. The results demonstrated a unique tubular nanostructure of TNTs shape. The mechanical performance of the nanocomposites was examined to show that the 5 wt % TNTs/epoxy coating was more impact resistance, the film hardness behavior and bending resistance than epoxy coating. The effects of TNT particles on corrosion resistance of epoxy coating were studied by salt spray test (Model SAM Y90) and compared to that of non-filler. After 144 h exposure, the corrosion resistance of epoxy resin greatly improved by using reinforcing the white pigment of TNTs. The results indicated that the coating containing TNTs shows the best protection efficiency. 

scholarly journals Development of Marine Antifouling Epoxy Coating Enhanced with Clay Nanotubes

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4195 ◽  
Author(s):  
Ye Fu ◽  
Wencai Wang ◽  
Liqun Zhang ◽  
Vladimir Vinokurov ◽  
Anna Stavitskaya ◽  
...  
Keyword(s):  
Epoxy Resin ◽  
Sea Water ◽  
Field Tests ◽  
Halloysite Nanotubes ◽  
Epoxy Coating ◽  
Release Time ◽  
Marine Microorganisms ◽  
Water Test ◽  
Natural Mixture ◽  
Clay Nanotubes

An antifouling epoxy resin doped with natural clay nanotubes that are loaded with biocide or silver allowed extended protection against the proliferation of marine microorganisms. Compared to the 2–3 months of protection with antifoulant dichlorooctylisothiazolone (DCOIT) directly admixed into epoxy resin, the DCOIT release time of the halloysite formulations was extended to 12 months by incorporating biocide-loaded nanoclay in the polymer matrix. The protective properties of the epoxy-halloysite nanocomposites showed much less adhesion and proliferation of marine bacteria Vibrio natriegens on the resin surface after a two-month exposure to seawater than the coating formulations directly doped with non-encapsulated DCOIT. The coating formulation protection efficiency was further confirmed by twelve-month shallow field tests in the South China Sea. Replacing 2 wt.% biocide in the traditional formula with DCOIT-loaded natural environmentally friendly halloysite clay drastically improved the antifouling properties of the epoxy coating, promising scalable applications in protective marine coating. The antifouling property of epoxy resin was enhanced with silver particles synthesized on halloysite nanotubes. A natural mixture of MnO particles and halloysite could also be used as a nonbiocide additive to marine coating. The short-term White Sea water test of epoxy coating with 5% of Ag-halloysite composite of MnO-halloysite natural mixture showed no visible fouling.

Effect of halloysite nanotubes on corrosion protection properties of the self-curing epoxy resin coatings

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Gongwen Tang ◽  
Tingting Ren ◽  
Yi Wang ◽  
Zhishan Yan ◽  
Linrong Ma ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Epoxy Resin ◽  
Corrosion Protection ◽  
Salt Spray ◽  
Thermo Gravimetric Analysis ◽  
Halloysite Nanotubes ◽  
The Self ◽  
Gravimetric Analysis ◽  
Neutral Salt ◽  
Content Type

Purpose The purpose of this paper is to study the effect of the nano tube fillers on the corrosion protection properties of the self-curing epoxy (SEP) coatings. Design/methodology/approach The self-curing epoxy (SEP) resin was synthesized via a reaction between diisopropoxy-bis ethylacetoacetato titanate and the epoxy resin. Halloysite nanotubes (HNTs) was surface modified by grafting (3-glycidoxypropyl) trimethoxysilane to obtain modified HNTs (mHNTs). The HNTs and mHNTs are used as nano tube fillers for the SEP coating. The thermal stability of the coatings was assessed via thermo-gravimetric analysis. The field-emission scanning electron microscopy (SEM) was conducted to analyze the surfaces and cross sections of the coatings. The anticorrosive efficiencies of the coatings were investigated by electrochemical measurements and a neutral salt spray test. Findings The results demonstrated that the additions of HNTs and mHNTs have little effect on the thermal degradation temperature of the SEP coating. However, the addition of the nanotubes reduced the corrosion resistance of the SEP coating. Originality/value The SEP coating itself showed excellent corrosion resistance without any reinforcement particles and is hence promising for application in the heavy-duty anticorrosion field of heat exchangers.

Properties of Functional Epoxy Coatings Modified by Carbon Nanoparticles

2015 ◽  
Vol 227 ◽  
pp. 127-130 ◽  
Author(s):  
Linda Diblíková ◽  
Alena Koukalová ◽  
Jan Kudláček ◽  
Michal Zoubek ◽  
František Herrmann
Keyword(s):  
Corrosion Resistance ◽  
Epoxy Resin ◽  
Abrasion Resistance ◽  
Carbon Nanoparticles ◽  
Composite Coatings ◽  
Epoxy Coating ◽  
Functional Coating ◽  
Mwcnt Content ◽  
Pure Epoxy ◽  
The Matrix

Properties of commercially available epoxy coating were modified using multi-walled carbon nanoparticles (MWCNT) to obtain functional coating with improved abrasion resistance. Simultaneously, corrosion resistance of the epoxy resin could not be negatively affected by the particles addition. Composite coatings with various MWCNT content were prepared and evaluated with regard to their function by abrasion and corrosion tests. We found out that the abrasion resistance of the coatings increased with increasing amount of CNT particles in the matrix. Corrosion protection properties of pure epoxy coating as well as its adhesion were slightly improved by adding 0.5 and 1 wt% MWCNT.

scholarly journals Influence of fluorinated graphene-modified epoxy coatings on the corrosion behaviour of 2024 aluminium alloy

RSC Advances ◽  
2021 ◽  
Vol 11 (29) ◽  
pp. 17558-17573
Author(s):  
Shixiong Zhao ◽  
Baojie Dou ◽  
Song Duan ◽  
Xiuzhou Lin ◽  
Yingjun Zhang ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Aluminium Alloy ◽  
Epoxy Resin ◽  
Epoxy Matrix ◽  
Corrosion Behaviour ◽  
Epoxy Coatings ◽  
Fluorinated Graphene ◽  
Modified Epoxy

This study provides an enhanced corrosion resistance of epoxy resin (EP) by embedding fluorinated graphene (FG) into the epoxy matrix.

Role of Aluminium on the Microstructure and Corrosion Behaviour of Magnesium Prepared by Powder Metallurgy Method

2020 ◽  
Vol 17 (3) ◽  
pp. 8206-8213
Author(s):  
J. Alias
Keyword(s):  
Corrosion Resistance ◽  
Powder Metallurgy ◽  
Corrosion Behaviour ◽  
Corrosion Current ◽  
Optical Microscope ◽  
High Reactivity ◽  
Aluminium Content ◽  
Powder Metallurgy Method ◽  
X Ray Diffraction ◽  
Promising Development

Much research on magnesium (Mg) emphasises creating good corrosion resistance of magnesium, due to its high reactivity in most environments. In this study, powder metallurgy (PM) technique is used to produce Mg samples with a variation of aluminium (Al) composition. The effect of aluminium composition on the microstructure development, including the phase analysis was characterised by optical microscope (OM), scanning electron microscopy (SEM) and x-ray diffraction (XRD). The mechanical property of Mg sample was performed through Vickers microhardness. The results showed that the addition of aluminium in the synthesised Mg sample formed distribution of Al-rich phases of Mg17Al12, with 50 wt.% of aluminium content in the Mg sample exhibited larger fraction and distribution of Al-rich phases as compared to the 20 wt.% and 10 wt.% of aluminium content. The microhardness values were also increased at 20 wt.% and 50 wt.% of aluminium content, comparable to the standard microhardness value of the annealed Mg. A similar trend in corrosion resistance of the Mg immersed in 3.5 wt.% NaCl solution was observed. The corrosion behaviour was evaluated based on potentiodynamic polarisation behaviour. The corrosion current density, icorr, is observed to decrease with the increase of Al composition in the Mg sample, corresponding to the increase in corrosion resistance due to the formation of aluminium oxide layer on the Al-rich surface that acted as the corrosion barrier. Overall, the inclusion of aluminium in this study demonstrates the promising development of high corrosion resistant Mg alloys.

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