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天然纤维增强复合材料与无化物固化氧化亚麻油树脂和大气压等离子体处理的亚麻纤维相结合
Sofya Savicheva1, Bastian E Rapp1, Nico Teuscher2
1Laboratory of Process Technology, NeptunLab, Department of Microsystems Engineering (IMTEK), University of Freiburg, Georges-Köhler-Allee 103, 79110 Freiburg im Breisgau, Germany.
Materials (Basel, Switzerland)
|September 14, 2024
概括
这项研究引入了一种新型的天然纤维增强复合材料 (NFRC),使用血处理的亚麻纤维和环氧化亚麻油涂层. 这种方法增强了附着性和耐久性,为可持续的生物基工程材料铺平了道路.
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
- 可持续工程 可持续工程
背景情况:
- 传统的纤维增强复合材料 (FRC) 经常使用不可回收的碳或玻璃纤维,引发了环境问题.
- 自然纤维增强复合材料 (NFRCs) 面临着由于极性差异的纤维矩阵粘附性较差的挑战,限制了其耐用性.
- 开发对传统FRC的可持续替代品对于减少对有限资源的依赖至关重要.
研究的目的:
- 开发一种使用亚麻纤维和生物基质基质的耐用和高性能天然纤维增强复合材料 (NFRC).
- 通过等离子处理和新型热涂层,改善亚麻纤维和聚乳酸 (PLA) 基质之间的界面粘附.
- 评估开发的NFRC的机械性能,以对绿色工程材料的潜在应用进行评估.
主要方法:
- 用大气等离子喷射处理亚麻纤维,以增加表面能量从20到40mN/m.
- 在亚麻纤维上使用氧化亚麻油,二氧化甘酸无水化物 (DDSA) 和DMP-30催化剂涂上了耐热涂层.
- 涂层的亚麻纤维通过带压将其纳入聚乳酸 (PLA) 基质中,以创建NFRC,然后进行拉伸试验.
主要成果:
- 等离子处理显著增强了亚麻纤维的分散表面能量.
- 环氧化亚麻油涂层使亚麻纤维的分散表面能量增加到30mN/m,并呈现出350°C的分解温度.
- 由此产生的NFRC显示出令人印象深刻的弹性模量高达18.3 GPa.
结论:
- 带有环氧化亚麻油涂层的等离子处理的亚麻纤维有效地改善了基于PLA的复合材料的界面粘附.
- 开发的NFRC表现出有前途的机械性能,与传统的FRC相美.
- 这项研究为创造可持续的,生物基纤维增强复合材料提供了可行的途径.
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