不同的固化后温度对废物改性聚合物复合材料的机械和物理性能的影响
Bernardeta Dębska1, Bruna Silva Almada2, Guilherme Jorge Brigolini Silva2
1Faculty of Civil and Environmental Engineering and Architecture, Rzeszow University of Technology, Poznańska 2, 35-084 Rzeszow, Poland.
Materials (Basel, Switzerland)
|November 9, 2024
概括
回收材料如废,聚乙烯和PET增强了环氧复合材料. 在高温下进行后固化可显著提高曲和压力强度,特别是在PET复合材料中,以实现可持续建筑.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 环境科学 环境科学
背景情况:
- 越来越多的生态问题推动建筑行业转向可持续实践.
- 减少原材料消耗是一个关键目标,可以通过将回收材料纳入复合材料来实现.
研究的目的:
- 评估回收材料 (废,聚乙烯,PET) 对环氧复合材料性能的影响.
- 为了研究高温后固化对这些复合材料机械性能的影响.
主要方法:
- 测试了四种类型的环氧复合材料:用废 (WR) 改性,废聚乙烯 (PE),废聚乙烯二甲 (PET) 废弃物,以及控制未改性砂 (CUM).
- 砂在成熟期间和经过固化后在60°C至180°C的温度下进行监测.
- 测量了屈曲强度,压力强度和质量损失.
主要成果:
- 柔性强度随着再加热温度而增加,一些复合材料的强度是未经修改的两倍以上.
- 压力强度在固化后达到140°C的峰值,其中PET砂达到最高值 (139.8 MPa).
- 在经过后固化后的所有样品中观察到轻微的质量损失 (0-0.06%).
结论:
- 高温后固化显著提高了回收环氧复合材料的机械性能.
- 经PET改性复合材料表现出卓越的性能,特别是压力强度,使它们非常适合预制元件.
- 统计分析确定了最佳的固化后温度和复合成分,以获得有益的特性.
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