![]() ![]() But is it worth doing that from the module point of view?. Knowing the technical difficulties one might consider, as a film manufacturer, to produce a non crosslinkable PO, which is the easy option. That means that they are very difficult materials to reticulate/crosslink and to convert into thermosets. Unfortunately the same properties that make them excellent dielectric materials, are at the same time the responsable of their poor chemical reactivity. This great advantage has been disclosed in detail in a different article in our Web that we strongly recommend you. The polyolefins (POE) have some important differences when compared to EVAs that make them a much better Encapsulants with improved dielectric properties. Turning around that, it means that the Ethylene VinylAcetate (EVA) is also a polyolefin, that historically has been named and known by its acronym, EVA. But in fact these new Encapsulants belong to the same family of polymers as EVA. They have been generically called and identified by the name of PolyOlefins (PO). Recently some new materials have entered the “arena at PV market”. The thermosets are a bit more difficult processing materials because to reach the final objective properties, they have to be processed accurate and precisely, following a recipe. It is just a matter of reaching their soften temperature and later cooling down. This job is an up and down temperature excercise. As all thermosets it behaves as a solid, infusible and insoluble polymer web.Īll thermoplastic polymers are “easy going” materials that can be melted and solidified as many times as needed. But, during the lamination process, the EVA's molecules suffer a series of chemical changes that bound the molecules together and convert the EVA into a different structured material, known as thermoset. In a practical way, this means that it is a polymer that becomes pliable or moldable above a determined temperature that it solidifies upon cooling. Before the lamination takes place the EVA is a thermoplastic polymer material. Until now Photovoltaic EVA Encapsulants have been conveniently transformed from thermoplastics into thermosets taking a critical part of the PV modules. Si lo prefiere, aquí tiene la versión en castellano But let’s go to the point, and let me explain myself. The Photovoltaic Encapsulants do not escape to this and bring us in front of deals of this type. In fact w e are continuously answering questions everyday, and finally deciding between to leave things as they are or by the contrary, taking actions and trying to control our destiny. This enquire is a general, timeless and worldwide question. The famous Shakespeare sentence “To be or not to be, that is the question” recalls us that we should continuously deal between, either suffering the problems as they come from the “outrageous Fortune” or “taking arms against a sea of troubles and by opposing end with them”.
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