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减少碳排放的有力策略:可回收单一材料聚乙烯功能薄膜

Liming Wei¹, Shengqi Zhan², Mingyu Zhou²

¹Shanghai Royal New Materials Technology Company Limited, Shanghai 201803, China.

|August 10, 2024

概括

回收聚乙烯薄膜保持良好的机械性能,但降低了屏障功能. 然而,与传统塑料相比,这种单一材料方法显著减少了二氧化碳排放.

科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
环境科学环境科学

背景情况:

全球不断增长的塑料生产需要可持续的解决方案.
一次性塑料带来了重大的环境挑战.
单一材料的多层包装提供了功能上的好处和可回收性.

研究的目的:

在四个回收循环后评估五层聚乙烯复合膜的机械和屏障性能.
评估使用回收单一材料薄膜对环境的影响,特别是减少二氧化碳排放.

主要方法:

一个五层共挤压聚乙烯薄膜 (LLDPE/mPE/PVA/mPE/LLDPE) 经过了四个回收循环.
在回收之前和之后测量了机械性能 (抗拉强度) 和屏障性能.
减少二氧化碳排放的计算是基于10%的循环质量.

主要成果:

纵向拉伸强度从29.66 MPa下降到21.972 MPa;横向拉伸强度从24.9 MPa下降到19.222 MPa.
在四个回收循环后,该膜保持了良好的机械完整性.
在第二个回收循环后,观察到屏障特性下降.
这种单一材料薄膜的循环质量为10%的重量减少了3692.25公斤/塑料的二氧化碳排放量.

结论:

单材料聚乙烯薄膜通过多个回收循环表现出机械性能的弹性.
虽然屏障性能下降,但整体的环境效益,特别是二氧化碳的减少,是相当大的.
这凸显了单一材料薄膜作为传统塑料的可持续替代品的潜力.

关键词:

在二氧化碳排放方面,二氧化碳排放量这是一个单一材料.多层次的多层次的回收回收是回收的过程.

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