在L-氨酸制的环氧树脂中静态度变化的效应
Melissa Walter1,2, Dennis Gibhardt1, Bodo Fiedler1,2
1Hamburg University of Technology, Institute of Polymers and Composites, 21073 Hamburg, Germany.
Polymers
|November 27, 2025
概括
像L-氨酸这样的氨基酸可以治愈环氧树脂,提供环保的替代品. 优化混合比率是关键,对于L-氨酸固化DGEBA,最佳性能在R=0.8和R=1.0之间.
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
- 生物材料工程 生物材料工程
背景情况:
- 越来越多的人对可持续的生物分子感兴趣,以减少聚合物生产中的环境和健康风险.
- 氨基酸被探索为环氧树脂的环保固化剂,为传统硬化剂提供替代品.
- 了解混合比对反应机制和特性的影响对于性能优化至关重要.
研究的目的:
- 研究L-氨酸和DGEBA混合比例的变化对反应通路和热力学特性的影响.
- 为了确定没有催化剂或加速器的L-氨酸固化DGEBA的最佳混合比率.
- 阐明L-氨酸在环氧树脂固化中的反应机制.
主要方法:
- 研究了L-氨酸固化DGEBA的11个混合比率.
- 使用光学分析,热力学测试和富里埃变换红外光谱法 (FTIR).
- 分析了固化反应和由此产生的材料特性.
主要成果:
- 在广泛的静电比率范围内观察到最佳的热力学性能 (R = 0.8到R = 1.0).
- 提出了详细的反应机制,包括热诱导α-NH3+组的脱和以太化.
- 关尼组对L-氨酸的反应性被确定为影响最佳配置的因素.
结论:
- 这项研究扩大了对用氨基酸,特别是L-氨酸处理环氧树脂的理解.
- 由于L-氨酸的特异反应性,建议稍微低于静态度的配置以获得最佳性能.
- 这项研究有助于开发使用生物分子的可持续环氧树脂系统.
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