Image analysis methodology for a quantitative evaluation of coating abrasion resistance

Crick, Colin R.

doi:10.1016/j.apmt.2021.101203

Cited by 10 publications

(21 citation statements)

References 38 publications

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“…This reversed behavior could be related to parts of the coating being detached from the substrate but not from the rest of the coating material, leaving small portions of the polymer. 28 This is illustrated by the confocal images of scratches in a PDMS(186) coating ( Figure 4 g,h). In comparison to the PVC scratches, it could be noticed that the scratch is surrounded by a pile of polymer that is higher in thickness compared to areas away from scratch boundaries.…”

Section: Resultsmentioning

confidence: 90%

“…A similar procedure was followed for both nano-sized (referred to as nSiO 2 ) and micron-sized (referred to as μSiO 2 ) silicon dioxide powder, which was detailed in previous work. 28 A solution of HMDS (1 mL) in toluene (100 mL) was added to a suspension of as silica (10 g) in toluene (250 mL) and refluxed at 120 °C for 24 h with magnetic stirring. The hydrophobized particles were centrifuged, washed twice with toluene and a further two times with ethanol, subsequently dried at 90 °C overnight, and stored dry under ambient conditions.…”

Section: Experimental Sectionmentioning

confidence: 99%

“…The resilience assessment methodology was developed in a previous report. 28 The process involved (i) sample abrasion, (ii) mass-loss tracking, and (iii) sample imaging (with subsequent image analysis). This process was repeated three times for each coating variation.…”

Section: Experimental Sectionmentioning

confidence: 99%

“…All images were converted to binary using MATLAB to extract the percentage of the remaining coating (as outlined in the previous report). 28 …”

Section: Experimental Sectionmentioning

confidence: 99%

“…A straightforward robustness analysis methodology was reported previously by the authors, which utilizes a combination of image processing and mass tracking for abraded coatings. 28 In this technique, sandpaper abrasion is conducted to a surface, and images are taken by a conventional electronic scanner after each abrasion cycle. A postimaging analysis is carried out using MATLAB, and a code designed to convert scanned images into binary (black/white pixels represent coating remained/coating removed, respectively) and to calculate the percentage of remaining/undamaged coating.…”

Section: Introductionmentioning

confidence: 99%

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Study on the Influence of Polymer/Particle Properties on the Resilience of Superhydrophobic Coatings

Crick

2022

ACS Omega

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Enhancement in the resilience of superhydrophobic coatings is crucial for their future applicability. However, the progress in this aspect is currently limited due to the lack of a consistent resilience analysis methodology/protocol as well as the limited understanding of the influence of the materials components on the resultant coating performance. This study applies a quantitative analysis methodology involving image analysis and mass tracking and utilizes it to investigate how the properties of coating components can influence coating resilience. The factors examined were changing the molecular weight/tensile strength of poly(vinylchloride)/poly(dimethylsiloxane) (PVC/PDMS) polymers and changing the size of the roughening particles. In addition to the examination of resilience data to evaluate degradation patterns, three-dimensional (3D) mapping of the scratches was performed to obtain an insight into how material removal occurs during abrasion. The results can indicate preferential polymer selection (using higher-molecular-weight polymers for PVC) and optimal particle sizes (smaller particles) for maximizing coating resilience. The study, although focused on superhydrophobic materials, demonstrates wide applicability to a range of areas, particularly those focused on the development of high-strength coatings.

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Section: Resultsmentioning

confidence: 90%

Section: Experimental Sectionmentioning

confidence: 99%

Section: Experimental Sectionmentioning

confidence: 99%

“…All images were converted to binary using MATLAB to extract the percentage of the remaining coating (as outlined in the previous report). 28 …”

Section: Experimental Sectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Study on the Influence of Polymer/Particle Properties on the Resilience of Superhydrophobic Coatings

Crick

2022

ACS Omega

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Experimental study of the mechanical behavior of the strain and friction resistance of PVC-coated copper cables

Gouya,

Hinna,

Meziane

et al. 2024

Procedia Structural Integrity

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Surface Tension and Viscosity Dependence of Slip Length over Irregularly Structured Superhydrophobic Surfaces

2022

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A comprehensive understanding of the slip phenomenon on liquid/solid interfaces is essential for multiple real-world applications of superhydrophobic materials, especially those involving drag reduction. In the current contribution, the so-called “slip-length” on an irregularly structured superhydrophobic surface was systematically evaluated, with respect to varying liquid surface tension and viscosity. The superhydrophobic polymer–nanoparticle composite (SPNC) material used exhibits a dual-scale surface roughness and was fabricated via coating a surface with a mixture of polydimethylsiloxane solution and functionalized silica particles. A cone-and-plate rheometric device was employed to quantify the slip length. To independently study the impact of surface tension and viscosity, three types of aqueous solutions were used: sodium dodecyl sulfate, ethanol, and polyethylene glycol. Our experimental results demonstrate that a decreasing surface tension results in a decreasing slip length when the fluid viscosity is held constant. Meanwhile, the slip length is shown to increase with increasing viscosity when the surface tension of the various liquids is matched to isolate effects. The study reveals a linear relationship between slip length and both capillary length and viscosity providing a reference to potentially predict the degree of achievable drag reduction for differing fluids on SPNC surfaces.

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Image analysis methodology for a quantitative evaluation of coating abrasion resistance

Cited by 10 publications

References 38 publications

Study on the Influence of Polymer/Particle Properties on the Resilience of Superhydrophobic Coatings

Study on the Influence of Polymer/Particle Properties on the Resilience of Superhydrophobic Coatings

Experimental study of the mechanical behavior of the strain and friction resistance of PVC-coated copper cables

Surface Tension and Viscosity Dependence of Slip Length over Irregularly Structured Superhydrophobic Surfaces

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