机械回收EPS的性能评估
Domagoj Tkalčić1, Jelena Vukadin1, Bojan Milovanović1
1Faculty of Civil Engineering, University of Zagreb, 10000 Zagreb, Croatia.
Materials (Basel, Switzerland)
|October 16, 2025
概括
回收扩展聚钢 (EPS) 复合材料保持了绝缘的关键机械和热性能,即使回收含量适度. 密度是性能的主要预测因素,与行业标准保持一致.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续工程 可持续工程
- 聚合物科学 聚合物科学
背景情况:
- 扩展聚钢 (EPS) 是一种常见的隔热材料.
- 将再生EPS纳入新复合材料对于可持续性和循环经济原则至关重要.
- 了解回收材料对EPS性能的影响对于其有效的再利用至关重要.
研究的目的:
- 评估EPS复合材料的机械和热性能,这些复合材料含有不同百分比的机械回收EPS.
- 为了比较建筑和包装废物的回收EPS的影响.
- 确定现有的行业标准 (EN 13163) 是否可以预测回收EPS复合材料的性能.
主要方法:
- EPS复合材料由两种来源的5%,10%,25%和50%的回收EPS制成.
- 测量了包括密度,压力强度,曲强度和导热率在内的关键性能.
- 结果与EN 13163:2016的预测模型进行了分析.
主要成果:
- 增加回收EPS含量降低了复合材料密度,特别是在10-25%以上.
- 压力强度与密度有很强的相关性,与原始EPS模型一致.
- 导热率显示最小的变化,在50%的回收含量下略有增加.
- 曲强度随着回收材料含量增加而下降,特别是对于包装EPS.
结论:
- 含有中度回收材料 (高达50%) 的EPS复合材料可以满足隔热的性能要求.
- 密度仍然是预测机械和热性能的主要因素,根据EN 13163.3.
- 需要对微观结构进行进一步的研究,以了解在更高的回收水平下财产退化.
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