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基于粉的可逆粘合剂:非静态度比对转化玻璃剂性质的影响
Nicole Tratnik1, Nicolas R Tanguy2, Daniel J Davidson1
1Chemical Engineering and Applied Chemistry, University of Toronto, 200 College St, M5S 3E5, Canada.
Carbohydrate polymers
|March 6, 2025
概括
这项研究探讨了使用粉的生物基环氧玻璃,提高了可回收性和材料循环性. 优化交叉连接器比率提高了改造效率和附着性,为可持续材料铺平了道路.
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
- 可持续化学 可持续化学
背景情况:
- 生物基环氧玻璃剂为以石油为基础的环氧玻璃提供了可持续的替代品.
- 玻璃制剂利用转化进行动态键重组,使其可回收利用.
- 粉是一种富含基的可再生原料,正在作为环氧玻璃制剂的基础进行研究.
研究的目的:
- 从粉中开发新的生物基环氧玻璃.
- 为了研究不同交叉连接剂 (pentaerythritol tetrakis ((3-mercaptopropionate) - PETMP) 与环氧比对玻璃物质性能的影响.
- 分析材料循环性的动态行为参数和粘附性能.
主要方法:
- 粉被用作环氧玻璃制剂的基础材料.
- 使用TEMPO催化剂测试了环氧与PETMP (1:0.7, 1:1, 1:1.25, 1:1.5) 的不同摩尔比率.
- 测量了改造效率,动态债券交换激活能量 (Ea) (d)),结过渡温度 (Tv) 和粘附强度.
主要成果:
- 改造效率从31%提高到239%,比例从1:1提高到1:1.5.
- 更高的交叉连接比率降低了玻璃过渡温度 (Tg),交叉连接密度,Ea (d) 和TV.
- 1:1.5的比率表现出对树面板 (3.02 ±0.7 MPa) 的粘附度最高,粘附恢复率为91%.
结论:
- 优化基于粉的环氧玻璃剂中动态键和功能组的密度对于性能至关重要.
- 开发的生物基玻璃材料显示了可持续材料应用的潜力,具有增强的可回收性.
- 获得的见解将有助于设计未来的生物基玻璃制品,具有量身定制的循环性质.
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