环氧青粘合层的分散和连续形态及其对机械性能的影响
Suzhou Cao1, Haocheng Yang1, Xinpeng Cui1
1MOE Key Laboratory of High Performance Polymer Materials and Technology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
Molecules (Basel, Switzerland)
|September 13, 2025
概括
对于环氧青粘合涂层 (EABC) 的最佳环氧树脂 (ER) 度为43体积%,实现了理想的连续微观结构. 这种度显著提高了机械性能和粘附性,平衡了性能和成本.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 土木工程 土木工程是指土木工程.
背景情况:
- 同连续的微观结构对于聚合物改性青的最佳性能至关重要.
- 建立理想的聚合物-矿网络是确定最佳聚合物含量的关键.
- 环氧青粘合涂层 (EABC) 正在研究其在青改性方面的潜力.
研究的目的:
- 准备和分析具有不同形态的EABC:环氧分散,共连续和分散.
- 使用激光扫描共聚焦显微镜 (LSCM) 研究EABC的相位结构演变和最终形态.
- 描述不同度环氧树脂 (ER) 的EABCs的气质和机械性能.
主要方法:
- 用受控制的ER度制备EABC.
- 使用激光扫描共聚焦显微镜 (LSCM) 进行形态分析.
- 旋转粘度的表征,拉伸性质,单圈剪切强度和拉开粘合强度.
主要成果:
- 观察到三种不同的形态:连续性 (41-42体积% ER),共连续性 (43-45体积% ER) 和环氧连续性 (46体积% ER).
- 在42%体积%的ER中观察到过渡形态.
- 在过渡到同连续形态 (43体积%ER) 时,拉伸强度 (524%),破裂延伸 (1298%),性 (2732%),拉开粘附性 (61%) 和剪切强度 (99%) 的显著改善发生了.
结论:
- 环氧树脂度为43体积%是EABC生产的最佳,产生一个连续的结构.
- 这种最佳度平衡了增强的机械性能,附着性和成本效益.
- 这项研究为环氧改性青材料的结构-性质关系提供了关键的见解.
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