在不同的浸泡溶液下比较柔性/脆性环氧树脂BFRP-AL接头的机械性能
Haichao Liu1, Ziyang Ding1, Yisa Fan1
1School of Mechanical Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China.
Polymers
|October 14, 2023
概括
Araldite® 2012粘合剂证明了优越的粘合强度和柔性,用于将纤维增强聚合物 (BFRP) 与合金5052的接头,特别是在恶劣的盐水环境中. 这项研究突出了耐用复合金属结构的最佳粘合剂选择.
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
- 机械工程 机械工程
背景情况:
- 玄武纤维增强聚合物 (BFRP) 复合材料具有经过验证的强度和耐用性.
- 不同材料的粘合粘合,如BFRP和合金5052,对于先进的应用至关重要.
- 了解环境压力下的粘合性能对于结构完整性至关重要.
研究的目的:
- 为了评估两种Araldite®粘合剂 (2012年和2015年) 的粘合性能,将BFRP与5052合金相结合.
- 评估这些接头在各种环境条件下的耐用性,包括盐喷和纯水.
- 通过实验和分析技术,研究粘接接头的故障机制.
主要方法:
- 试验测试BFRP-合金5052连接的关节粘合与Araldite® 2012年和2015年.
- 关节暴露于环境条件:80°C/3.5%NaCl,80°C/5%NaCl和纯水.
- 使用扫描电子显微镜 (SEM) 进行故障分析.
- 通过吸水,差分扫描热量测量 (DSC),热重力测量分析-衍生热重力测量 (TGA-DTG) 和富里埃转换红外光谱法 (FTIR) 来进行材料表征.
主要成果:
- 在5%的NaCl环境中,Araldite® 2012粘合剂接头具有更高的平均断裂强度 (10.66MPa在720小时) 和更好的可塑性.
- Araldite® 2015粘合剂关节显示出撕裂,接口和凝聚力故障的组合.
- 在SEM分析中,纤维脱落和接口损伤是常见的故障模式.
结论:
- Araldite® 2012是一种更适合的粘合剂,用于将BFRP粘合到5052合金上,特别是在腐蚀性盐水条件下.
- 环境因素显著影响BFRP金属接接头的长期性能和故障模式.
- 进一步的材料表征支持对粘合剂降解和关节故障机制的理解.
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