Publication: Desarrollo de una laca de cataforesis de nueva generación
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2019-01-09
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Universidad Complutense de Madrid
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Abstract
Los tres motores que mueven cualquier desarrollo industrial y que conducen a la evolución tecnológica son los siguientes:• Cumplimiento de la normativa legal• Aumento de prestaciones• Aumento del rendimiento económico. Los nuevos desarrollos pueden dar respuesta a uno, a dos o – como en el caso del presente trabajo - a los tres apartados anteriores.En este caso, el ámbito industrial afectado es el de las pinturas para el sector de la automoción y, más en concreto la pintura de electrodeposición catódica (en adelante cataforesis). Este tipo de pintura consta, de tres componentes y este trabajo se centra en uno de ellos: la laca de cataforesis. Se debe indicar que, en la terminología específica, el término “cataforesis” se utiliza para hacer referencia tanto a la pintura en sí, como al proceso de pintado. Con objeto de evitar confusiones, a lo largo del texto se entenderá que “cataforesis” hace referencia a la pintura y “pintado por cataforesis” al proceso.La cataforesis es la primera capa de pintura que se aplica dentro del sistema global de pintado del automóvil en los fabricantes originales. Esta capa de pintura es la responsable de la protección anticorrosiva. De ella dependen las garantías cada vez crecientes, que, en este sentido, son capaces de ofrecer los fabricantes de automóviles.El pintado por medio de este proceso consiste en hacer pasar por un recipiente lleno de pintura – llamado cuba - las partes a pintar. Se conecta a un sistema de corriente continua; el objeto a pintar constituye uno de los polos, en este caso, el cátodo, o polo negativo...
The driving forces behind any development step in the industry which lead to technological evolution are:• Comply with legal requirements• Increase of performances• Improve economical outputThe new developments can cover one, two or, as in this work, all three of them.In this case, the industrial field related is the coatings industry for the automotive branch and, more precisely, the electrodeposition coatings (from now on ED-Coating). This coating is composed by three elements, and this work concentrates on one of them: the binder.It has to be pointed out, that the term “ED-Coating” can refer for both, the coating itself and the coatings process. To avoid misunderstandings, in this text the coating or paint will be referred as “ED-Coating” and the painting process as “painted by ED-Coating”.The ED-Coatings is the first coating layer applied within the whole painting system at the car manufacturer site. This coating layer is responsible for the anticorrosion properties and in this way, for the increasing guaranties car manufacturers offer.The painting process is based on the move of the parts to be painted through a tank filled with this paint. The whole system is connected to a DC current supply, and the part to be painted forms one of the poles, in this case the cathode or negative pole...
The driving forces behind any development step in the industry which lead to technological evolution are:• Comply with legal requirements• Increase of performances• Improve economical outputThe new developments can cover one, two or, as in this work, all three of them.In this case, the industrial field related is the coatings industry for the automotive branch and, more precisely, the electrodeposition coatings (from now on ED-Coating). This coating is composed by three elements, and this work concentrates on one of them: the binder.It has to be pointed out, that the term “ED-Coating” can refer for both, the coating itself and the coatings process. To avoid misunderstandings, in this text the coating or paint will be referred as “ED-Coating” and the painting process as “painted by ED-Coating”.The ED-Coatings is the first coating layer applied within the whole painting system at the car manufacturer site. This coating layer is responsible for the anticorrosion properties and in this way, for the increasing guaranties car manufacturers offer.The painting process is based on the move of the parts to be painted through a tank filled with this paint. The whole system is connected to a DC current supply, and the part to be painted forms one of the poles, in this case the cathode or negative pole...
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Tesis de la Universidad Complutense de Madrid, Facultad de Ciencias Químicas, Departamento de Ingeniería Química, leída el 23-05-2018