The Role of a Silane Coupling Agent in Common Photovoltaic Encapsulation Systems

Abstract

Grafts of silane coupling agent EVA and POE were prepared by twin-screw melt extrusion method to obtain grafts EVA-g-KH171 and POE-g-KH171. The effect of silane coupling agent KH171 on the properties of two commonly used encapsulants in the photovoltaic field was investigated. The changes in the melt index of the grafts were tested by different dosages of silane coupling agents to explore further the effect of the changes in the melt index of the two grafting products, namely, EVA and POE, on the peeling strength. With the addition of the silane coupling agent, the melt index of the grafting product of EVA and POE increased. The peel strength test showed that the silane coupling agent KH171 had a more significant improvement in the adhesion of EVA and POE, proving the feasibility of its application in practical conditions.