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Influence of Fragment Size on the Time and Temperature of Ethylene Vinyl Acetate Lamination Decomposition in the Photovoltaic Module Recycling Process

机译:光伏组件回收过程中片段大小对乙烯乙酸乙烯酯层压时间和温度的影响

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摘要

Photovoltaics is a commercially available and reliable technology with significant potential for long-term growth in nearly all global regions. Several research institutes and companies are working on recycling concepts for thin film modules and modules with crystalline cells. The establishment of recycling and reuse technologies appropriate and applicable to all photovoltaics (PV) modules is a key issue to be addressed as part of corporate social responsibility to safeguard the environment and to implement a fully material-circulated society without any waste. The copolymer ethylene-vinyl acetate (EVA) layer is a thermoplastic containing cross-linkable ethylene vinyl acetate, which is used to encapsulate the photovoltaic cells. The cells are laminated between films of EVA in a vacuum, under compression, and up to 150·°C. The encapsulant’s primary purpose is to bond or laminate the multiple layers of the module together. In the photovoltaic module recycling process, the second important step (after mechanical dismantling of the frame) is EVA lamination removal. In this study, different parameters of the thermal delamination method used during the recycling process were experimentally tested and compared, and the most ecological and economical one is proposed.
机译:光伏技术是一种可商购获得的可靠技术,在几乎所有全球地区都具有长期增长的巨大潜力。几家研究机构和公司正在研究薄膜组件和带晶体电池组件的回收概念。建立适用于所有光伏(PV)组件的回收和再利用技术是一个关键问题,应作为企业社会责任的一部分加以解决,以保护环境和实现完全物质循环的社会而没有任何浪费。共聚物乙烯-乙酸乙烯酯(EVA)层是一种热塑性塑料,包含可交联的乙烯-乙酸乙烯酯,可用于封装光伏电池。将电池在真空,压缩和高达150°C的条件下层压在EVA膜之间。密封剂的主要目的是将模块的多层粘合或层压在一起。在光伏组件回收过程中,第二个重要步骤(在机械拆除框架之后)是去除EVA覆膜。在这项研究中,对回收过程中使用的热分层方法的不同参数进行了实验测试和比较,提出了最生态和最经济的方法。

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