开发一个回收工艺,并对EVA,PVDF和PET聚合物从使用寿命结束的光伏模块中进行表征
Marek Królikowski1, Michał Fotek2, Piotr Żach2
1Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
Materials (Basel, Switzerland)
|February 24, 2024
概括
回收光伏 (PV) 面板可以有效地回收有价值的材料. 这项研究引入了一种新的机械热和化学工艺,用于将组件从光伏模块废弃物中分离出来,从而使二次材料采购成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
- 化学工程是化学工程的重要组成部分.
背景情况:
- 不断扩大的光伏 (PV) 产业从太阳能电池板中产生大量电子废物.
- 太阳能电池板废弃物为回收有价值的二次材料提供了机会.
研究的目的:
- 开发一个独特和有效的回收光伏模块的程序.
- 调查从使用终止的光伏电池板中分离构成材料的方法.
主要方法:
- 开发了一种多阶段的回收过程,从机械去除框架和接头盒开始.
- 采用机械热法来分离玻璃组件.
- 使用烯的化学分层,通过温度和超声波增强,用于分离乙烯乙酸乙烯 (EVA) 和其他组件.
主要成果:
- 开发的过程有效地将电池,金属带,EVA和背板从光伏模块中分离出来.
- 使用FTIR和元素分析证实了回收聚合物的纯度.
- 分离材料的热性能使用DSC热量计进行了表征.
结论:
- 该研究证明了化学分层和从光伏模块废弃物中回收材料的可行方法.
- 优化的工艺减少了溶剂的使用,并使有价值的组件能够有效地分离,以便潜在的重复使用.
相关概念视频
01:20Types of Step-Growth Polymers: Polyesters
2.2K
The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
2.2K
01:14Polymer Classification: Architecture
2.7K
Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
2.7K