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This paper will investigate improving the adhesion of UV-curable ESS-CAE coatings by functionalizing ESS with adhesion-promoting groups.
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This paper presents the diagnostic work undertaken to determine the cause of failing coating and spalling block on the exterior of a commercial building in northern Illinois. The field assessment methods used to diagnose the problems including non-destructive and destructive methods for determining moisture content in the masonry, infrared thermography, and visual assessments are described.
Due to its success in the ductile iron wastewater pipe market, ceramic epoxy coatings are being increasingly specified and successfully applied on nearly every substrate used for immersion service in both the water & wastewater industry. Some unique characteristics set these epoxy coatings apart from their traditional counterparts. For instance, ceramic epoxy systems provide high-film builds, eliminate undercutting, minimize permeability, provide superior edge retention and form a non-ablative film.
This paper will discuss the relationship between corrosion and hazardous locations and how to achieve the overall best performance and safety of your conduit system. What makes an area corrosive often makes it hazardous, in fact the elements that are necessary for either corrosion or an explosion are very similar.
The objective of surface preparation is to create proper adhesion of a coating over the substrate. Proper surface preparation is vital to the long life and effectiveness of a coating applied in corrosive service. In some projects, the owners ask for the additional water jet cleaning prior to blasting work.
When coatings are applied to substrates as e.g., metal, the adhesion of the cured paint is a critical parameter for the final performance of the paint film. The adhesion of the paint to the substrate influences many properties of the paint, which including visual appearance, anticorrosive performance, flexibility, resistance against scribing and scratching, delamination, blistering and many more. Many actions can be taken to influence and improve the adhesion of a coating to a substrate.
Internal coatings stress (ICS) develops in coatings applied to a rigid substrates. During drying, volume changes due to solvent loss and/or cure induces stresses in the films. Differences in the thermal expansion coefficients of the coating and substrate also affect the ICS. ICS affects the interfacial adhesion and results in delamination once the stress exceeds the force of adhesion.
Many coating product data sheets call for surface profiles of 3-4 mils. Others call for 1.5-2 miles surface profile for a very similar coating type – why should this be? To start to understand this we need to first of all look at why we measure the surface profile on steel surfaces. It pretty much comes down to two main things.
HISTORICAL DOCUMENT. This NACE International/SSPC joint standard practice covers the preparation of concrete surfaces before the application of protective coating or lining systems. The standard includes two updated tables, Table 1 details classes of surface preparation, and Table 2 provides minimum acceptance criteria for concrete surfaces before coatings are applied and relevant test methods. The updated Appendix (nonmandatory) includes two additional tables, Table A1 provides typical surface properties of finished concrete, and Table A2 provides an extensive list of surface preparation methods for concrete surfaces. This standard should be used by specifiers, applicators, inspectors, and others who are responsible for defining a standard degree of cleanliness, strength, profile, and dryness of prepared concrete surfaces.
Esta norma conjunta da SSPC/NACE International aborda a preparação de superfícies de concreto antes da aplicação de revestimento ou sistemas de proteção. Esta norma deve ser usada pelos especificadores, aplicadores, inspetores e outros responsáveis por definir um grau padrão de limpeza, resistência, perfil e secura de superfícies de concreto preparadas.
This AMPP standard covers the preparation of concrete surfaces before the application of protective coating or lining systems. This standard should be used by specifiers, applicators, inspectors, and others who are responsible for defining a standard degree of cleanliness, strength, profile, and dryness of prepared concrete surfaces.