开发处理聚烯薄膜废弃物的技术,并将其用于制造成品的技术
Damian Dziadowiec1, Karina Walburg1, Danuta Matykiewicz1
1Faculty of Mechanical Engineering, Poznan University of Technology, Piotrowo 3, 61-138 Poznan, Poland.
Materials (Basel, Switzerland)
|November 9, 2024
概括
循环聚烯 (PP) 包装废弃物可以使用基无水化物修饰的聚烯 (MAPP) 和聚烯弹性体 (POE) 进行修饰. 这项研究表明,纳入废物显著提高了拉伸和冲击强度等机械性能,无论是挤压还是注塑PP产品.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物工程 聚合物工程
- 可持续材料 可持续材料
背景情况:
- 聚烯 (PP) 是一种广泛使用的热塑性聚合物.
- 包装废物是一个重大的环境挑战.
- 塑料垃圾的利用对循环经济至关重要.
研究的目的:
- 调查使用包装行业废物修改聚烯 (PP) 产品的可行性.
- 评估废物纳入对PP的机械和热性能的影响.
- 评估修改PP适用于挤出和注塑应用的适用性.
主要方法:
- 聚烯废弃物 (造重新磨) 混合与原始PP,比例为50/50.
- 作为修饰剂,使用了化改性聚烯 (MAPP) 和聚烯弹性体 (POE).
- 体质量流速 (MFR) 和差分扫描热量计 (DSC) 用于性能评估.
- 测量了挤出薄膜和注塑模样的拉伸强度和冲击强度.
- 使用CIE L*a*b*系统评估了颜色变化.
主要成果:
- 再生PP与原始PP相比显示出更好的抗拉强度,价值达到27.1MPa.
- 从回收 PP 制成的薄膜的拉伸强度与原始材料薄膜 (约. 25 MPa) 的压力.
- 加入POE显著提高了冲击强度,与未经修改的PP相比增加了多达4倍.
结论:
- 包装工业废弃物,特别是聚烯废弃物,可以有效地用于制造改性PP产品.
- 修改后的PP具有增强的机械性能,使其适合挤出和注塑.
- 这种方法提供了一种可持续的解决方案,用于管理塑料废物,同时生产有价值的材料.
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