合成和修改的效果的Oligoesters与反应性组基于环氧亚利法树脂和Oligoester二碳酸酸的合成和修改作用
Xiangli Meng1, Qing He1, Tetiana Hryhorenko1,2
1School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China.
Polymers
|February 26, 2025
概括
新的环氧亚利法树脂修饰剂增强了材料的性能. 这些反应性橄 Ester 改善了塑料变形,显著增加了破裂时的延伸和工业应用中的剪切强度.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
背景情况:
- 环氧树脂 (ER) 是多功能耐热聚合物,广泛应用于各种行业.
- 传统的环氧树脂往往会出现脆性骨折,限制了它们的应用范围.
- 开发有效的修饰剂对于增强环氧基材料的机械性能至关重要.
研究的目的:
- 为了研究含有反应基的基在环氧亚利法树脂上的修饰作用.
- 合成和描述基于环氧功能化和二氧化酸的新型修饰剂.
- 评估这些修饰剂对环氧树脂机械和结构性质的影响.
主要方法:
- 合成具有终端环氧基组的橄乙烯添加物.
- 使用富里埃变换红外光谱 (FTIR),核磁共振 (NMR-1H,13C),热重力测量分析 (TGA),动态机械分析 (DMA) 和扫描电子显微镜 (SEM) 的表征.
- 机械测试包括破裂时的延伸,冲击强度,断裂工作和剪切强度测量.
主要成果:
- 通过反应性环氧基团成功合成和特征化基修饰剂.
- 通过DMA,TGA和SEM确认修饰聚合物的单相结构.
- 对改性聚合物中的塑性变形的观察,与未经改性树脂的脆性失败形成对比.
- 机械性能显著改善: ~450%的延伸在断裂时增加, ~150%的剪切强度增加在50%的修饰剂含量下.
结论:
- 与反应性环氧基团合成的基改剂有效地增强了环氧树脂的特性.
- 经过修改的环氧材料表现出改善的塑性变形和更高的机械性能.
- 这些发现表明,有可能开发用于各种工业应用的先进冷固化环氧材料.
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