Impact of melting range on delamination process and recycling potential of photovoltaic encapsulants

IF 6.3 2区材料科学 Q2 ENERGY & FUELS

Solar Energy Materials and Solar Cells Pub Date : 2025-09-03 DOI:10.1016/j.solmat.2025.113884

Asier Murillo , Alicia Buceta , Antonio Urbina , Jaione Bengoechea

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引用次数: 0

Abstract

In this study, we introduce a method to evaluate the disassembly potential of photovoltaic (PV) modules by quantifying the force required to separate their constituent layers. Specifically, we conducted delamination tests on single-cell photovoltaic modules, focusing on three polymeric encapsulants: on the one hand, the cross-linked encapuslant Ethylene Vinyl Acetate (EVA) and Polyolefin Elastomer (POE); on the other hand, the noncross-linked Thermoplastic Polyolefin (TPO). The objective was to demonstrate that delamination force significantly decreases at temperatures exceeding the polymer’s melting range, as determined by Differential Scanning Calorimetry (DSC). Therefore, delamination was performed at various temperatures using a blade to separate the glass from the remaining layers. The results indicate that, beyond the melting range, the delamination force decreases markedly for all three encapsulants. Furthermore, TPO exhibited the lowest delamination strength, followed by EVA and POE, with the latter two requiring similar forces once their melting ranges were exceeded.

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熔融范围对光伏封装胶分层工艺及回收潜力的影响

在本研究中，我们引入了一种方法，通过量化分离光伏组件组成层所需的力来评估光伏组件的拆卸潜力。具体而言，我们对单电池光伏组件进行了分层测试，重点研究了三种聚合物封装剂：一方面，交联封装剂乙烯醋酸乙烯酯（EVA）和聚烯烃弹性体（POE）；另一方面，非交联热塑性聚烯烃（TPO）。通过差示扫描量热法（DSC）确定，目的是证明在超过聚合物熔化范围的温度下，分层力显着降低。因此，在不同的温度下，使用刀片将玻璃与剩余层分离，进行分层。结果表明，在熔融范围之外，三种封装剂的分层力都显著减小。此外，TPO具有最低的分层强度，其次是EVA和POE，后两者在超过其熔化范围时需要相似的力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Solar Energy Materials and Solar Cells 工程技术-材料科学：综合

CiteScore

12.60

自引率

11.60%

发文量

513

审稿时长

47 days

期刊介绍： Solar Energy Materials & Solar Cells is intended as a vehicle for the dissemination of research results on materials science and technology related to photovoltaic, photothermal and photoelectrochemical solar energy conversion. Materials science is taken in the broadest possible sense and encompasses physics, chemistry, optics, materials fabrication and analysis for all types of materials.