In this work, polymer blends based on ethylene vinyl acetate (EVA) and polyolefin (PO) at different weight ratios, also in the presence of a crosslinking agent (CA) and stabilizers (STAB), were investigated as potential encapsulants for PV modules. The EVA/PO blends were processed by melt mixing and then subjected to compression moulding following industrial lamination processing conditions. The EVA/PO films were characterized by mechanical tensile tests and thermogravimetric analysis, and the obtained results highlight the beneficial effect of PO at low amounts on the mechanical behaviour and thermal resistance at high temperatures (>300°C). All EVA/PO films were subjected to UVB exposure, and the photoaging extent was monitored by FTIR and UV-visible spectroscopies. Therefore, EVA-rich blends can be considered as good candidates for PV module encapsulants, given a compromise in the behaviour before and after photoaging.

在这项工作中，基于不同重量比的乙烯醋酸乙烯酯 (EVA) 和聚烯烃 (PO) 的聚合物共混物，也在交联剂 (CA) 和稳定剂 (STAB) 的存在下，被研究作为光伏组件的潜在封装剂。EVA/PO 共混物通过熔融混合进行加工，然后在工业层压加工条件下进行压缩成型。EVA/PO 薄膜通过机械拉伸试验和热重分析进行表征，所得结果强调了少量 PO 对高温（> 300°C）下的机械性能和耐热性的有益影响。所有 EVA/PO 薄膜都经过 UVB 曝光，并通过 FTIR 和紫外-可见光谱监测光老化程度。所以，