在粘合结合的聚合物复合材料中对扩散诱导的纤维-矩阵接口损伤的研究
1Department of Mechanical and Metal Technologies, Dokuz Eylul University Izmir Vocational School, Buca, 35360 Izmir, Turkey.
Polymers
|June 27, 2025
概括
这项研究研究了海水如何影响复合材料,如玻璃纤维增强聚合物 (GFRP) 和碳纤维增强聚合物 (CFRP). 15个月后,与CFRP相比,GFRP显示出更大的吸水能力和更大的机械性能下降.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物工程 聚合物工程
- 腐蚀科学 腐蚀科学
背景情况:
- 复合材料具有很高的强度与重量比,但在潮湿/海洋环境中可能会降解.
- 湿度扩散特别影响玻璃纤维增强聚合物 (GFRP) 和碳纤维增强聚合物 (CFRP).
- 了解降解机制对于复合材料在海洋应用中的耐用性至关重要.
研究的目的:
- 调查海水暴露的粘合剂结合的GFRP和CFRP连接的损伤形成和机械性能变化.
- 量化吸收水分及其对这些复合材料机械性能的影响.
- 为了评估单环结合复合材料中的水分传递机制.
主要方法:
- GFRP和CFRP板材是使用手工铺设方法制造的.
- 样品被浸入爱琴海水中长达15个月,并监测湿度吸收.
- 通过三点曲试验 (ASTM D790) 评估机械性能,并使用SEM分析损坏.
主要成果:
- 15个月后,GFRP吸收了4.83%的水分,而CFRP吸收了0.96%.
- 与干样相比,扬模在GFRP下降了25.23%,在CFRP下降了11.13%.
- SEM分析显示了与水分扩散相一致的微观结构损伤.
结论:
- 暴露在海水中显著降低了GFRP的机械性能,比CFRP更多.
- 湿度吸收遵循菲克定律,表明扩散是主要的传递机制.
- 这项研究提供了关键数据,关于结合复合材料在海洋环境中的长期性能.
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