通过恢复稳定技术对聚乙烯 (乙) 层间薄膜进行闭环回收
Vasilis Nikitakos1, Athanasios D Porfyris1, Konstantinos Beltsios2
1Laboratory of Polymer Technology, School of Chemical Engineering, Zographou Campus, National Technical University of Athens, 15780 Athens, Greece.
Polymers
|February 13, 2025
概括
本研究介绍了使用抗氧化剂重新化方法对消费后聚乙烯 (PVB) 的回收策略. 实现了有效的稳定,使PVB废物能够在新应用中重复使用.
科学领域:
- 聚合物科学 聚合物科学
- 材料化学 材料化学
- 可持续材料 可持续材料
背景情况:
- 聚乙 (PVB) 在层状玻璃中至关重要,但缺乏寿命末回收解决方案.
- 在热和剪切下PVB降解限制了其可回收性.
研究的目的:
- 为消费后PVB废物制定一个全面的回收战略.
- 确定有效的抗氧化剂配方,用于在重新化过程中稳定PVB.
主要方法:
- 通过MFR,IV和YI分析PVB热氧化降解机制 (链分裂).
- 对六种抗氧化剂配方在可塑化和非可塑化PVB中的有效性进行选.
- 使用双螺杆挤出机,以优化抗氧化剂度,提高回收过程的规模.
主要成果:
- 确定链裂作为PVB的主要降解机制.
- 两种特定的性抗氧化剂在抑制PVB降解方面表现出卓越的性能.
- 最佳抗氧化剂度确定在0.3%w/w,成功升级和验证回收PVB.
结论:
- 已经建立了一个可行的PVB回收再化恢复战略.
- 精选的抗氧化剂在再加工过程中有效地保护PVB,并提高其使用寿命.
- 这种方法为PVB废物提供了一个循环经济解决方案.
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