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超分支的动态交叉连接网络使可降解,可重新配置和多功能的环氧玻璃膜成为可能
Yuanbo Zhang1, Hongxia Yan1, Ruizhi Yu1
1Shaanxi Key Laboratory of Macromolecular Science and Technology, Xi'an Key Laboratory of Hybrid Luminescent Materials and Photonic Device, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710129, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|November 7, 2023
概括
这项研究引入了超分支动态交叉连接网络 (HDCNs),以创建可持续的环氧玻璃. 这种新材料可降解,可重新配置,并为先进的聚合物应用提供了增强的性能.
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:
- 耐热聚合物由于其难以处理的性质,造成了重大废弃物挑战.
- 现有的可再加工的热通常会损害材料的性能或功能.
- 动态交叉连接策略提供了克服热固体限制的途径.
研究的目的:
- 通过使用超分支动态交叉连接网络 (HDCNs) 将以石油为基础的环氧热固体设计成可降解,可重新配置和多功能玻璃体.
- 为了证明HDCNs在从热固态废物中创造可持续的先进材料方面的潜力.
主要方法:
- 开发包含多动态链接的高分支动态交叉连接网络 (HDCNs).
- 在室温下对溶剂诱导的降解的研究.
- 机械性能,透明度和阻燃性的表征.
- 通过埃斯特交换探索以乙醇诱导的网络重建.
主要成果:
- 由此产生的玻璃化物在室温下轻微降解为二甲基胺.
- 实现复合物回收利用,使碳纤维和环氧粉末的再利用成为可能.
- 与原始热相比,该材料表现出优越的性,高模量,高透明度和耐火性.
- 乙醇触发网络重建,将玻璃化物转化为在-150°C时具有超高模量的弹性材料.
结论:
- HDCNs提供了一个可行的策略,用于从环氧热中制造可持续的高性能玻璃.
- 这种方法解决了消费者后的热固态废物,并为先进的聚合物设计提供了一种新的交叉连接方法.
- 开发的玻璃制剂对超低温应用和一般可持续材料解决方案具有前景.
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