一项对脂基环氧树脂与不同柔性链的性能进行比较研究
Lianli Deng1, Zehua Wang2, Bailu Qu3
1Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications, School of Chemistry and Environmental Science, Xiangnan University, Chenzhou 423000, China.
Polymers
|November 14, 2023
概括
脂基环氧单体中的灵活链条长度显著影响了树脂特性,增强了性和粘附性. 修改固化剂链的效果很小,突出显示了单体结构对基树脂性能的重要性.
科学领域:
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
- 有机化学 有机化学
背景情况:
- 环氧树脂是多功能耐热聚合物,具有广泛的工业应用.
- ,一种天然树脂,为开发生物基环氧树脂提供了一个可持续的替代方案.
- 控制分子架构对于定制环氧树脂特性至关重要.
研究的目的:
- 为了研究灵活链条长度在脂基环氧单体和固化剂对材料性能的影响.
- 为了比较合成的脂基环氧树脂与商业石油基环氧树脂 (E20) 的性能.
- 为了建立基于脂的环氧树脂的结构属性关系.
主要方法:
- 合成两种以脂为基础的环氧单体:AR-EGDE和ARE,具有不同的灵活链长.
- 使用不同灵活链长度的DETA,TETA和TEPA固化环氧树脂.
- 系统评估关键性能:粘附性,冲击强度,笔硬度,灵活性,耐水性,耐热性和耐候性.
主要成果:
- 在基环氧单体 (ARE到AR-EGDE) 中增加灵活链条的长度提高了性,粘合力和耐水性,但降低了笔的硬度和耐热性.
- 修改固化剂 (DETA,TETA,TEPA) 的灵活链条长度对树脂性能的影响有限.
- 与商业E20环氧树脂相比,树脂的树脂表现出优越的粘附性,耐水性和耐候性.
结论:
- 烯酸树脂基环氧树脂的特性主要是由引入单体的灵活链条长度决定的,特别是当它增加化环之间的空间时.
- 固化剂的灵活链修改对树脂的整体性能影响较小.
- 脂基环氧树脂是石油基环氧树脂的有前途,耐用和潜在的更可持续的替代品,特别是在需要出色的粘附性和环境耐受性的应用中.
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