功能分级粘合剂关节的评估和表征:实验和数值分析
Yanan Zhang1, Pedro Gálvez2, Miguel Angel Martínez3
1Soete Laboratory, Faculty of Engineering and Architecture, Ghent University, B-9052 Ghent, Belgium.
Polymers
|January 8, 2025
概括
这项研究表明,等级环氧粘合剂接头与单个接头相比,显著提高了剪切强度. 在SikaPower®-1548-1511-1548配置显著提高关节强度和减少应力度.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 聚合物科学 聚合物科学
背景情况:
- 环氧树脂是用于粘合剂的先进材料,取代了传统的机械接头.
- 像SikaPower®-1511和SikaPower®-1548这样的创新粘合剂为工程应用提供了增强的性能.
研究的目的:
- 为了评估两种环氧粘合剂SikaPower®-1511和SikaPower®-1548在各种分级配置中的性能.
- 研究单个和分级粘合剂关节的热固化行为,强度性能和界面应力分布.
主要方法:
- 不同扫描热度计 (DSC) 和富里叶变换红外光谱法 (FTIR) 用于热分析.
- 剪切试验和有限元模拟用于强度和应力分析.
- 评估了四种粘合剂配置,包括单个膝关节和分级关节.
主要成果:
- 与SikaPower®-1511 (4 MPa) 相比,SikaPower®-1548的固化速度较慢,剪切极限负荷 (9 MPa) 更高.
- 1548-1511-1548分级配置增加了32.20%的剪切强度,并降低了皮和剪切应力强度.
- 与SikaPower®-1511相比,1511-1548-1511分级配置的剪切强度略有下降 (8.86%).
结论:
- 在降低应力度和提高整体关节强度方面,分级粘合剂关节比单个关节具有显著的优势.
- 环氧树脂对于先进的工程应用具有巨大的潜力,分级设计可提供增强的性能.
- 这项研究为设计有效的分级粘合剂接头提供了理论基础和技术指导.
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