可持续的聚烯基复合材料与农业废物填充剂:热,形态,机械性能和尺寸稳定性
Tatiana Zhiltsova1,2,3, Jéssica Campos1, Andreia Costa4
1Mechanical Engineering Department, University of Aveiro, 3810-193 Aveiro, Portugal.
Materials (Basel, Switzerland)
|April 9, 2024
概括
用大米皮和橄坑增强的天然纤维复合材料增强了聚烯.
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
- 复合材料 复合材料 复合材料
背景情况:
- 自然纤维复合材料 (NFC) 为合成聚合物提供了可持续的替代品.
- 天然填料的内在特性可能会限制它们在聚合物矩阵中的使用.
- 需要进一步的研究来克服这些局限性,以便更广泛地实施NFC.
研究的目的:
- 研究聚烯 (PP) 复合材料的热,,机械,形态,吸水和尺寸稳定性.
- 评价米 (rh) 和橄 (op) 作为增强剂的作用,负载量分别为20%和30%.
- 探索填料分布对复合材料性能的影响.
主要方法:
- 聚乙烯复合材料的注塑成型,含有不同度的水和橄.
- 化流量指数 (MFI) 的表征,热特性 (化和结晶温度).
- 机械测试 (拉伸和曲模式),形态评估,吸水和尺寸稳定性分析.
主要成果:
- 增加的填充物含量 (大米和橄坑) 减少了与原始PP (PPv) 相比,在PP复合材料中类似地减少了MFI.
- 复合材料表现出增加的刚性 (高达49%) 和抗拉强度,柔性降低.
- 观察到改善的屈曲模量和尺寸稳定性 (减少线性收缩),PP30%rh显示了增强的屈曲强度. PP30%op显示了较低的水敏感性.
结论:
- 米和橄坑增强剂可以显著提高PP复合材料的机械性能和尺寸稳定性.
- 填充剂的含量会影响质和机械行为,而纤维的组成和表面积会影响水的吸收.
- 填料分布的形态评估对于理解复合材料性能至关重要,突出了这项研究的新方面.
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