用不同纤维类型增强的生物环氧基复合材料的高热耐用性和损伤演变
Abdullah Iftikhar1, Allan Manalo1, Zaneta Senselova1
1Centre for Future Materials, University of Southern Queensland, Toowoomba, QLD 4350, Australia.
Polymers
|January 10, 2026
概括
生物环氧复合材料显示出合理的高热耐用性. 在恶劣的条件下,亚麻纤维与碳,玻璃和玄武岩等合成纤维相比,对降解具有更好的抵抗力.
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:
- 生物环氧复合材料被探索为可持续的替代品.
- 了解高热耐久性对于性能关键的应用至关重要.
研究的目的:
- 研究用碳,E玻璃,玄武岩和亚麻纤维增强的生物环氧复合材料的高热耐用性.
- 评估湿热衰老对纤维和接口特性的影响.
- 为了阐明这些复合材料中的损伤机制.
主要方法:
- 将纤维和复合材料暴露在60°C和98%的相对湿度下,持续3000小时.
- 评估纤维的拉伸强度降低和复合材料的界面切割强度 (IFSS) 的降低.
- 使用能量分散式X射线光谱 (EDS) 的化学分析和使用扫描电子显微镜 (SEM) 的形态检查.
主要成果:
- 纤维类型显著影响耐用性;亚麻纤维比合成纤维更好地抵抗化学降解.
- 由于尺寸层降解,碳,玻璃和玄武岩纤维的拉伸强度降低更高.
- IFSS的减少在亚麻复合材料中最高 (10%),在碳复合材料中最低 (4%).
- EDS显示了尺寸的水解和侵蚀,以及玻璃/玄武岩纤维中的减少.
- SEM显示了各种各样的故障模式:在碳中由矩阵主导,在玻璃/玄武岩中进行界面解接,在亚麻复合材料中进行纤维拉出.
结论:
- 生物环氧复合材料在高热老化下表现出可接受的性能.
- 用亚麻增强的生物环氧复合材料表现出有希望的耐久性特性.
- 该研究强调了损伤途径,并支持生物环氧复合材料作为可持续材料的潜力.
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