Smart Coatings

Abstract

Materials that are capable of adapting their properties dynamically to an external stimulus are called responsive, or smart. The term "smart coating" refers to the concept of coatings being able to sense their environment and make an appropriate response to that stimulus. The standard thinking regarding coatings has been as a passive layer unresponsive to the environment. The current trend in coatings technology is to control the coating composition on a molecular level and the morphology at the nanometer scale. The idea of controlling the assembly of sequential macromolecular layers and the development that materials can form defined structures with unique properties is being explored for both pure scientific research and industrial applications. Several smart coating systems have been developed, examined, and are currently under investigation by numerous laboratories and industries throughout the world. Examples of smart coatings include stimuli responsive, antimicrobial, antifouling, conductive, self-healing, and super hydrophobic systems.

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

“…The term "smart" refers to a coating that can modify its physical properties as a response of an external mechanical or physicalchemical stimulus, 31 being it momentary or continuous, in reversible or irreversible ways. 32 As thermochromic pigments can change color reversibly, thermochromic coatings represent one of the most interesting subclasses of smart materials in the industrial field. 33 Nowadays, thermochromic pigments, based on several types of oxides, [34][35][36] are employed in the formulation of inks and polymers.…”

Uso De Metanol E Etanol No Diagnóstico De Falhas Térmicas Envolvendo Papel Kraft Isolante

“…One of them is Petrobras Specification N-2913 -Anti-corrosion coatings for carbon steel tanks, such as liquefied gas tanks and storage cylinders (CONTEC, 2015)which defines how corrosion protection coatings should be applied internally and externally to atmospheric tanks, liquefied gas tanks and cylinders in inland facilities. In the case of epoxy resin use inside storage tanks for chemical products, it is necessary to consider the possibility of interaction between the stored product and the epoxy (Shchukin et al, 2006;He et al, 2008;Baghdachi, 2009;Sørensen et al, 2009;Calle et al, 2010;Hamdy, 2010;Ganesh et al, 2011;Mathiazhagan et al, 2011;Choi et al, 2013;Makhlouf, 2014;Popoola et al, 2014;Ulaeto et al, 2017), from a chemical point of view (reaction between the coating and the stored product), and from a physical point of view (solubilization of some epoxy components or product penetration into its crystalline structure). Thus, taking into account the influence of each component from the epoxy coating and its interaction with aromatic hydrocarbons (benzene, toluene and xylenes) and using specific techniques to investigate the cause of interaction, the present study was carried out in order to adjust the epoxy coating formulation, resulting in experimental data that add significantly to the literature.…”

Electrospinning of poly(β-hydroxybutyrate) scaffolds: morphology and aging

“…Therefore, the development of polymeric materials for potential biomedical applications goes from the synthesis to processing and understanding the influence of sterilization and storage time on their physical properties. Examples of close coupling between synthesis and processing to produce smart, functional polymers are shape memory polymers, [5][6][7] functional hydrogels, 8 smart coatings 9 and electrospun scaffolds. 10,11 The processing of polymers by electrospinning is a technique that can produce micrometer-to nanometer-scale fibrous morphologies and greatly modify the physical properties of polymers.…”