在环氧/氨基和之间的接口上的粘合剂粘合的起源解
Kouki Akaike1, Yukihiro Shimoi2, Toshiaki Miura2
1Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology, Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
Langmuir : the ACS journal of surfaces and colloids
|July 19, 2023
概括
这项研究揭示了化学相互作用和机械互锁如何增强环氧和之间的粘合粘合. 了解这些界面现象可以改善表面处理和用于更强的金属接头的粘合剂选择.
科学领域:
- 材料科学 材料科学 材料科学
- 表面化学 表面化学
- 粘附科学 粘附科学 粘附科学
背景情况:
- 粘合剂粘合在移动和电子等行业中至关重要.
- 粘合剂粘合中的界面现象仍然不明,限制了材料选择.
- 目前的知识差距阻碍了对表面处理和粘合剂的精确选择.
研究的目的:
- 阐明化学相互作用和机械互锁在粘合剂粘合中的作用.
- 为了评估环氧/胺粘合剂和接口的粘合性能.
- 为了澄清粘附机制以改善材料设计.
主要方法:
- 对接口进行光谱和显微分析.
- 使用双悬臂束测试对粘附性质的评估.
- 对环氧/胺粘合剂粘合于平面氧化和粗表面的研究.
主要成果:
- 氨基硬化剂的质子化将表面的AlO (OH) 3转化为AlO (OH).
- 在粘合面上带有正电荷的界面二极体层增强了静电相互作用.
- 表面粗引起的机械互锁显著增加了界面断裂能量.
结论:
- 化学相互作用,特别是界面质子,加强粘合键.
- 由于表面粗而造成的机械互锁,进一步增强了粘合力.
- 这项研究揭示了环氧粘合剂粘合中的化学和机械因素的联合作用.
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