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Título: Resistencia de adhesivos, sellantes y recubrimientos para ambientes corrosivos
Título original: Resistance of Adhesives, Sealants, and Coatings to Corrosive Environments
Autor: Edward M. Petrie
Resumen: Understanding and planning for chemical resistance are difficult processes. This article explains the primary factors involved, including physical and chemical degradation. 

For an adhesive, sealant, or coating to be useful, it not only must withstand the mechanical forces that are acting on it, but it must also resist the service environment or the chemical forces that may also be applied. Thus, one of the most important characteristics for these materials is their endurance to corrosive environments such as those found in the chemical process industry. This article will focus on the chemical resistance of adhesives, but the fundamentals that are discussed relate to sealants, coatings, and other polymeric materials as well.

Most organic polymeric materials used to formulate adhesives, sealants, and coatings tend to be susceptible to chemicals and solvents, especially at elevated temperatures. Physical properties and durability are influenced by many environmental elements. These include high and low temperatures, moisture or relative humidity, chemical fluids, and outdoor weathering. Table 1 summarizes the relative resistance of variousadhesive types to common chemical operating environments.

In selecting polymeric materials for their chemical resistance, certain generalities must be avoided. The nature and type of chemical environments, their concentrations and temperature, the joint design, chemical resistance of the substrates, and other specific factors must be considered. As the combination of factors becomes large, formulations must become quite specialized to meet extreme requirements. As a result, understanding and planning for chemical resistance are difficult processes.
Idioma: Inglés     País: USA     ISBN / ISSN: 0026-0576     Año: 2010
Tipo: Artículo
Área: Materiales y Materias primas > Recubrimientos Metálicos
Subsectores de aplicación: · Maquinaria y bienes de equipo
· Automoción e industria auxiliar
· Fabricación de productos metálicos, excepto maquinaria y equipo
Fuente: Metal Finishing
Localización en fuente: Volume 108, Issue 9, September 2010, Pages 38-40
Descriptores: adhesives (adhesivos), sealants (sellantes), coating (recubrimiento) corrosive enviroment (ambiente corrosivo)
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