Recovering Polyethylene Glycol Terephthalate and Ethylene-Vinyl Acetate Copolymer in Waste Solar Cells via a Novel Vacuum-Gasification-Condensation Process,ACS ES&T Engineering

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Recovering Polyethylene Glycol Terephthalate and Ethylene-Vinyl Acetate Copolymer in Waste Solar Cells via a Novel Vacuum-Gasification-Condensation Process
ACS ES&T Engineering ( IF 7.4 ) Pub Date : 2020-11-30 , DOI: 10.1021/acsestengg.0c00091
Baojia Qin ₁ , Mi Lin ₁ , Xiaoyue Zhang ₁ , Zhenming Xu ₂ , Jujun Ruan ₁

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Polyethylene glycol terephthalate and ethylene-vinyl acetate copolymer are applied as packaging materials in solar cells. Abundant polyethylene glycol terephthalate and ethylene-vinyl acetate copolymer were produced with the production of waste solar cells. To our knowledge, few technologies have been reported about the disposal of polyethylene glycol terephthalate and ethylene-vinyl acetate copolymer. In this paper, a novel technology of vacuum-gasification-condensation was developed to decompose polyethylene glycol terephthalate and ethylene-vinyl acetate copolymer. At 505 °C and 10 Pa, polyethylene glycol terephthalate and ethylene-vinyl acetate copolymer were decomposed and gasified. Then, 3,6,8,8-tetramethyl-2,3,4,7,8,8a-hexahydro-1H-3a,7-methanoazulene (cedrene isomer) and cedrene were produced in gasification products. They are scarce and expensive medicinal intermediates for cancer rehabilitation, and their productive rates were 9.65 and 0.51 wt %, respectively. This paper provides a pressing needed technology of decomposing polyethylene glycol terephthalate and ethylene-vinyl acetate copolymer, which will contribute to the sustainable development of the photovoltaic industry. Meanwhile, how to improve the productive rate and develop the directional enrichment technology will be the focus of future work on waste solar cells recovery.

中文翻译：

通过新型真空气化-冷凝工艺回收废太阳能电池中的聚对苯二甲酸乙二醇酯和醋酸乙烯-乙酸乙烯酯共聚物

聚对苯二甲酸乙二醇酯和乙烯-乙酸乙烯酯共聚物被用作太阳能电池的包装材料。随着废太阳能电池的生产，产生了丰富的聚对苯二甲酸乙二醇酯和乙烯-乙酸乙烯酯共聚物。据我们所知，关于聚对苯二甲酸乙二醇酯和乙烯-乙酸乙烯酯共聚物的处理的技术报道很少。本文研究了一种新的真空气化-缩合技术来分解聚对苯二甲酸乙二醇酯和乙烯-乙酸乙烯酯共聚物。在505℃和10Pa下，聚对苯二甲酸乙二醇酯和乙烯-乙酸乙烯酯共聚物分解并气化。然后，在气化产物中制备了3,6,8,8-四甲基-2,3,4,7,8,8a-六氢-1H-3a，7-甲基杂氮烯（丁二烯异构体）和雪松烯。它们是用于癌症康复的稀缺且昂贵的药用中间体，其生产率分别为9.65和0.51 wt％。本文提供了分解聚对苯二甲酸乙二醇酯和乙烯-乙酸乙烯酯共聚物的迫切需要的技术，这将有助于光伏产业的可持续发展。同时，如何提高生产率和开发定向富集技术将是未来太阳能电池回收的工作重点。这将有助于光伏产业的可持续发展。同时，如何提高生产率和开发定向富集技术将是未来太阳能电池回收的工作重点。这将有助于光伏产业的可持续发展。同时，如何提高生产率和开发定向富集技术将是未来太阳能电池回收的工作重点。

更新日期：2020-11-30

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