Estudio del Contenido en gel del Material Encapsulante EVA, como una Medida de Calidad del Proceso de Laminación de Módulos Fotovoltaicos

The gel content is a test that tests the resistance of the material of the module encapsulation layer, ensuring that the current conduction pathways of the cells are hermetically isolated from the inclement weather. In order to guarantee a good lamination of a photovoltaic module and therefore, a long service life of the same it is necessary that the degree of curing of the encapsulant be find between 65% - 90%. The objective of this work was to study the gel content of the EVA, after rolling. The gel content was determined using the EVASA supplier test method, taking EVA samples, after the lamination process of the photovoltaic modules. The results obtained were 73 to 96%. It is concluded that the gel content is a parameter that serves to guarantee the lamination process, since in the curing process chemical bonds are formed transversely between the long molecules of the EVA, which are weakly bound together before the reaction . The percentages of gel content, mean the percentage of EVA in which said reaction took place.