Effects of polymer hardness on the abrasive wear resistance of thick organic offshore coatings

Momber, Andreas W.; Irmer, M.; Marquardt, T.

doi:10.1016/j.porgcoat.2020.105720

Cited by 28 publications

(16 citation statements)

References 31 publications

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“…The hardness of polymeric coatings also has statistically significant effects on the coating abrasive wear resistance [44]. The hardness and elastic modulus showed a maximum value close to the surface, followed by a plateau and a significant increase at higher penetrations [45].…”

Section: Microscopic Analysismentioning

confidence: 99%

Verification of the Influence of Particle Shape on the Chemical Resistance of Epoxy Coating and Use of Waste Glass as the Filler

et al. 2022

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The use of suitable secondary raw materials as fillers in progressive, protective agents primarily intended for horizontal concrete construction is very effective not only from the ecological but also from the economic point of view. The impact of using various types of waste glass as fillers on the mechanical parameters of epoxy coatings was experimentally verified. Assessing the dependency of the coating’s chemical resistance on the shape of the used filler’s particles was the main aim of the performed research. A solvent-free epoxy suitable for a chemically aggressive environment was selected for the experiment. These were epoxy coatings filled with a micro filler based on raw materials such as glass flakes and silica flour. Three tested formulations containing fillers with different particle shapes and characteristics were exposed to H2SO4, HCl, CH2O2 and NaOH at concentrations of 5% and 30% and evaluated after 60, 90 and 120 days. The chemical resistance assessment was carried out not only visually but also using a scanning electron microscope (SEM). Thanks to the use of the waste glass as a coating filler, tensile properties and hardness improved, and its use did not negatively affect the chemical resistance and adhesion of the epoxy coatings. It was found that the shape of the filler particles influences the resistance of the coating against a chemically aggressive environment. The epoxy coating containing pre-treated waste windshield glass (shards) showed even better properties than the reference coating.

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Section: Microscopic Analysismentioning

confidence: 99%

Verification of the Influence of Particle Shape on the Chemical Resistance of Epoxy Coating and Use of Waste Glass as the Filler

et al. 2022

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“…Nowadays the Taber test is employed in the assessment of the abrasion resistance of ceramic-inorganic coatings, [72][73][74] but it was designed for the characterization of organic layers, which must withstand high-abrasion stresses. [75][76][77] As a matter of fact, the Taber method has been used to study the aesthetical performances of the four series of samples as it is more aggressive and destructive respect to the scrub test, thus inducing a severe damage on the coatings surface. Figure 11 shows the total color variation, ΔE, as a function of the Taber abrasion cycles.…”

Section: Taber Abrasion Testmentioning

confidence: 99%

Esthetic performance of thermochromic pigments in cataphoretic and sprayed coatings for outdoor applications

Calovi

Russo

Rossi

2021

J of Applied Polymer Sci

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This study aims to assess the aesthetical performances of thermochromic coatings for outdoor applications. In details, this work focuses on the efficiency of thermochromic pigments inside cataphoretic and sprayed primers, evaluating the possible synergic effect of a protective transparent topcoat. The structure of thermochromic pigments is examined by optical microscope, and their color-changing behavior is evaluated by colourimetric measurements. Colourimetric analyses are also carried out to monitor the thermochromic performances of the coatings during exposure to an aggressive NaCl solution and UV-B radiations, and to assess the protective role of the topcoat. In addition to that, wet-and dry-abrasion tests are carried out to define the suitability of these coatings for outdoor applications where good resistance to mechanical damage is required. Thus, this work evidences the better aesthetical features of the cataphoretic primer, which, however, particularly suffers from chemicalphysical degradation processes. Nevertheless, the application of the transparent topcoat allows to maintain the integrity of the cataphoretic primer. The double-layer coating exhibits a remarkable color-changing behavior even when subjected to degradation phenomena due to exposure to aggressive environments.

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“…Taber abrasion ∆t = 155 μm d) 100 cycles, 500 g load Offshore protective coatings b),c) [ 54,55] N/A N/A N/A N/A Taber abrasion ∆t < 50 μm d) 1000 cycles, 1000 g load a) Used in passive cooling technology. b) Not used in passive cooling technology.…”

Section: Introductionmentioning

confidence: 99%

Biomimetic Robust All‐Polymer Porous Coatings for Passive Daytime Radiative Cooling

Zou

Luo

Yang

et al. 2022

Macromol. Rapid Commun.

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Passive daytime radiation cooling (PDRC) has gained considerable attention as an emerging and promising cooling technology. Polymer-based porous materials are one of the important candidates for PDRC application due to their easy processing, free of inorganic particle doping, and multifunctionality. However, the mechanical properties of these porous materials, which are critical in outdoor services, have been overlooked in previous studies. Herein, a nonsolvent-induced phase separation (NIPS) method combined with ambient pressure drying to prepare polyethylene-polysilicate all-polymer porous coatings is developed. The coatings possess a Cyphochilus beetle-like skeleton structure with optimal skeleton size, laminated anisotropy, and high volume fraction (64 ± 1%). These structure features ensure a maximum skeleton density without optical crowding, thus enhancing light scattering and stress dispersion, and balancing optical and mechanical properties. The coatings exhibit significant mechanical robustness (only ≈70 μm thickness reduction after 1000 Taber abrasion cycles at a 750 g load without influencing optical performance), durability, optical properties (a solar reflectance of ≈95% and an average near-normal thermal emittance of ≈96%), and PDRC performance (realizing sub-ambient cooling of ≈3-6 °C at midday with different weather conditions). The work provides a new solution to improve the practicability of polymer-based porous coatings in PDRC outdoor services and other fields.

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Effects of polymer hardness on the abrasive wear resistance of thick organic offshore coatings

Cited by 28 publications

References 31 publications

Verification of the Influence of Particle Shape on the Chemical Resistance of Epoxy Coating and Use of Waste Glass as the Filler

Verification of the Influence of Particle Shape on the Chemical Resistance of Epoxy Coating and Use of Waste Glass as the Filler

Esthetic performance of thermochromic pigments in cataphoretic and sprayed coatings for outdoor applications

Biomimetic Robust All‐Polymer Porous Coatings for Passive Daytime Radiative Cooling

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