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自中和的胺-酸木材粘合剂木材粘合剂
Yuchen Zhou1, Dandan Xu1, Chunyin Li2
1College of Chemistry and Material Engineering, Zhejiang A&F University, Hangzhou 311300, China.
International journal of biological macromolecules
|April 23, 2025
概括
这项研究将morpholine复合物引入宁-酸粘合剂,有效地提高pH值并改善木材粘合的耐用性. 这种环保的粘合剂解决方案可以避免有害化学物质,并增强机械性能.
科学领域:
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
- 木材科学 木材科学 木材科学
背景情况:
- 传统的宁粘合剂使用有害的甲或六胺硬化剂.
- 坦宁-酸粘合剂提供了一个环保的替代品,但受到低pH值的影响,导致木材降解.
- 出于环境和性能原因,开发具有更好的耐久性的可持续木材粘合剂至关重要.
研究的目的:
- 为了调节酸-酸粘合剂的pH值,使用带有酸和酸的摩尔福林复合物.
- 提高环保木材粘合剂的机械性能和长期耐用性.
- 通过减轻基材降解,为木材粘合应用提供可行,可持续的解决方案.
主要方法:
- 素-酸粘合剂的配方是用吗啡/糖酸和吗啡/酸复合物.
- 使用热重力测量 (TG) 分析,电喷射电离-质谱 (ESI-MS),里埃转换红外光谱 (FTIR) 和X射线光电子光谱 (XPS) 分析了粘合物的结构和性能.
- 使用行业标准方法评估机械性能,耐水性和快速老化.
主要成果:
- 添加了morpholine复合物,使治愈后的粘合剂的pH值从3.89增加到5.22 (酸) 和5.03 (酸).
- 最佳的添加 (10%的酸质量) 显著改善了粘合强度和耐水性.
- 更高的复杂度显示收益率下降,表明性能提升的关键最佳水平.
结论:
- 吗波林复合物有效地中和了素-酸粘合剂的酸度,防止木质基板的降解.
- 修改后的粘合剂表现出增强的机械性能和优越的耐水性,使它们适用于木材粘合.
- 这项研究提出了一个有前途的,自我中和和环保的粘合系统,用于可持续的木材应用.
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