Effect of nanoparticles on the anticorrosion and mechanical properties of epoxy coating

Shi, Xianming; Nguyen, Tuan Anh; Suo, Zhiyong; Liu, Yajun; Avci, Recep

doi:10.1016/j.surfcoat.2009.06.048

Cited by 650 publications

(328 citation statements)

References 30 publications

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“…2. The figure shows a featureless surface of the neat EP, and also reveals a rough surface characteristic of the film in which the NC particles were embedded in the epoxy matrix (Shi et al 2009). The surface of the ENC nanocomposites was observed to be relatively rough and eventful compared to the neat resin.…”

Section: Morphologies Of Nanocellulose (Nc) and Epoxy/nanocellulose (mentioning

confidence: 99%

Anticorrosion Properties of Epoxy/Nanocellulose Nanocomposite Coating

et al. 2017

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Nanocellulose (NC) is an attractive reinforcement agent that can be incorporated into protective coatings because it is a renewable, biodegradable, and biocompatible polymer resource. In this study, a series of epoxy resin-based nanocomposites were prepared in the form of coatings with various amounts of NC loadings, and the coatings were applied onto mild steel at room temperature. The characterizations of the NC and nanocomposites were performed via X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), and Fourier transform infrared spectroscopy (FTIR). The thermophysical properties of the nanocomposites were evaluated using differential scanning calorimetry (DSC) and thermogravimetry (TGA) analyses. The transparency of the nanocomposite specimens was examined by ultraviolet visible (UV-Vis) spectroscopy in the range of 300 to 800 nm. The corrosion protection properties of the coated mild steel substrates immersed in a 3.5% NaCl solution were studied comparatively by electrochemical impedance spectroscopy (EIS). The results showed that all of the nanocomposite coatings with NC noticeably influenced the epoxy-diamine liquid pre-polymer, both physically and chemically. Furthermore, the 1 wt.% NC nanocomposite coating system was found to have the most pronounced anti-corrosion properties, as confirmed by a 30-day EIS study.

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Section: Morphologies Of Nanocellulose (Nc) and Epoxy/nanocellulose (mentioning

confidence: 99%

Anticorrosion Properties of Epoxy/Nanocellulose Nanocomposite Coating

et al. 2017

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“…This was achieved by reducing the void and increasing the penetration route of liquid [49]. Inorganic filler particles such as halloysite at nano-size can be used as reinforcement in the epoxy to produce nanocomposite.…”

Section: Resultsmentioning

confidence: 99%

Environmental Stress Cracking Resistance of Halloysite Nanoclay-Polyester Nanocomposites

Saharudin¹,

Wei²,

Shyha³

2017

WJET

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The environmental stress cracking resistance of halloysite nanoclay-polyester nanocomposites was investigated using fracture mechanics approach. The incorporation of halloysite nanoclay was found to improve the environmental stress cracking resistance of the nano-composites. The storage modulus of nano-composites measured by dynamic mechanical analysis increased remarkably as a function of halloysite nanoclay content. At 0.7 wt% nanoclay, the T g improved from 72˚C to 76˚C. The fracture toughness increased up to 33% and time to failure improved 155% with the addition of 0.7 wt% of halloysite nanoclay. The maximum microhardness was found 119% higher for the same nano-filler concentration compared to monolithic polyester. The reinforcement with 1 wt% showed lower fracture toughness due to agglomerations of nanoclay which act as flaws. The presence of agglomerates weakened the bond between nano-particles and matrix hence reduces the environmental stress cracking resistance by halloysite nanoclay reinforcement.

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“…(Z'') axis 22 as observed in the Nyquist plots illustrated in Figure 6. This behavior is associated to the presence of lamellar silicates dispersed in the polymer matrix, which form barriers along the film thickness increasing its tortuosity of the diffusion channels and hindering the passage of gases and liquids molecules 25 . The coating OMMT-free (Figure 6a) showed greater decrease of the coating resistance with the immersion time in relation to the coatings with OMMT.…”

Section: Resultsmentioning

confidence: 99%

“…The coating OMMT-free (Figure 6a) showed greater decrease of the coating resistance with the immersion time in relation to the coatings with OMMT. The loss in the corrosion protection of a coating can be followed by the trend to form the capacitive arc characterized by the coating charge reduction caused by the beginning of the corrosive process, which results from diffusion of water and Cl -ions throughout the coating and reaching the metal surface 25 . As shown in Figure 6b and c, the 4 wt% OMMT coating exhibits better barrier properties than 2 wt% OMMT.…”

Section: Resultsmentioning

confidence: 99%