用未经处理和漂白的麻纤维增强的多乳酸的刚性进行比较研究
Roberto J Aguado1, Gabriela A Bastida1,2, Francisco X Espinach1
1LEPAMAP-PRODIS Research Group, University of Girona, C/Maria Aurèlia Capmany 61, 17003 Girona, Spain.
Polymers
|July 14, 2023
概括
这项研究探讨了完全生物来源的复合材料,使用用大麻纤维增强的聚乳酸. 大麻纤维提供高效的强化,增强生物复合材料的特性,用于可持续材料的应用.
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
- 生物复合材料是一种生物复合材料.
背景情况:
- 使用天然纤维的生物复合材料正在为可持续材料开发获得吸引力.
- 结合生物基基质与天然纤维一起,增强了环境优势.
- 聚乳酸 (PLA) 是一种重要的生物基聚合物,用于制造环保复合材料.
研究的目的:
- 为了研究未经处理的麻丝 (UHS) 和苏打漂白的麻纤维 (SBHF) 在聚乳酸矩阵中的强化潜力.
- 准备和表征完全生物来源,不连续增强复合材料.
- 分析PLA中的大麻纤维的机械性能和增强效率.
主要方法:
- 通过动力混合,挤出,削和注射成型来制备复合材料.
- 拉力测试用于评估机械性能,如拉力模量和故障时的应变.
- 应用Hirsch和Tsai-Pagano模型来分析阶段贡献.
主要成果:
- 拉伸模量以线性增加,纤维含量高达30%的重量.
- 苏打漂白的麻纤维 (SBHFs) 与未经处理的麻丝 (UHSs) 相比,导致故障时更高的应变.
- 聚烯/大麻生物复合材料的Young模量比玻璃纤维 (GF) 增强聚烯高,纤维负载为30 wt%.
结论:
- 大麻纤维,特别是SBHF,在PLA矩阵中表现出高效的强化,超过了基于内在模量的预期.
- 该研究强调了完全生物来源的复合材料作为传统材料的可持续替代品的潜力.
- 混合物规则分析证实了天然麻纤维在生物复合材料中的高强化效率.
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