预测定制聚烯混合物和消费后材料的线性低密度聚乙烯含量,使用风学测量
Dominik Kaineder1,2, Christian Marschik1, Ingrid Trofin2
1Competence Center CHASE GmbH, Hafenstraße 47-51, 4020 Linz, Austria.
Polymers
|November 27, 2024
概括
在聚烯 (PP) 中定量线性低密度聚乙烯 (LLDPE) 对于回收至关重要. 这项研究提出了基于风度的模型,以准确测量PP后消费材料中的LLDPE污染.
科学领域:
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
- 回收技术的回收技术
背景情况:
- 可持续的经济依赖于纯粹的回收材料.
- 分析聚烯交叉污染可以确保回收塑料的产品质量一致.
- 在聚烯 (PP) 中定量线性低密度聚乙烯 (LLDPE) 对于有效的回收是必不可少的.
研究的目的:
- 为了量化PP主导材料中的LLDPE含量.
- 评估差分扫描热度计 (DSC) 和度计在LLDPE量化中的有效性.
- 开发数学模型来确定PP消费后回收物中的LLDPE污染水平.
主要方法:
- 不同扫描热量计 (DSC) 用于测量热性质.
- 平行板类类风湿测量,以评估流动行为.
- 拉曼光谱和原子力显微镜 (AFM) 用于形态确认.
主要成果:
- 对于量化LLDPE,DSC度是不够的,特别是在低度 (1-10%重量) 时.
- 风度测量显示,与交叉点 (COP) 和零剪切粘度相关的偏差与LLDPE含量增加有关.
- 形态分析证实,在PP中,LLDPE的含量高达30%的重量.
结论:
- 风力测量与数学建模相结合,提供了一种可行的方法来量化PP中的LLDPE.
- 拟议的模型可以确定低 (1-15 wt%) 和中 (高达30 wt%) 的LLDPE数量.
- 这种方法适用于评估PP后消费材料中的LLDPE污染,有助于塑料回收的质量控制.
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