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制备和修改基于糖的非异酸聚氨粘合剂,用于合板粘合
Hongyi Zhong1, Qianyu Zhang1, Hong Lei2
1Yunnan Key Laboratory of Wood Adhesives and Glued Products, College of Material Science and Chemistry Engineering, Southwest Forestry University, Kunming 650224, China.
Molecules (Basel, Switzerland)
|April 26, 2025
概括
研究人员使用生物质开发了基于糖糖的非异酸聚氨 (SNIPU) 木材粘合剂. 使用聚乙烯胺 (PEI) 的最佳SNIPU配方显示出出色的结合强度和改善的固化性能,为传统聚氨提供了可持续的替代品.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
背景情况:
- 由于使用异酸盐,传统的聚氨 (PU) 材料面临着环境问题.
- 来自生物质的非异酸盐聚氨 (NIPU) 树脂提供了一个可持续的替代品.
- 开发NIPU木质粘合剂是对环保应用的日益增长的研究领域.
研究的目的:
- 合成和评估用于合板应用的基于糖糖的非异酸聚氨 (SNIPU) 粘合剂.
- 为了研究不同氨基酸对SNIPU粘合性能的影响.
- 为了优化SNIPU配方,提高粘合强度和降低固化温度.
主要方法:
- 糖与二甲基碳酸盐发生反应,然后与各种胺基聚合 (PEI MW10,000,PEI MW1800,二甲基二胺,六二胺).
- 评估SNIPU粘合剂的性能,重点关注粘合强度和耐水性.
- 研究氨基含量和乙烯基甘二甲基乙醇 (EGDE) 修饰效应.
主要成果:
- 使用PEI-10000的SNIPU粘合剂表现出优越的粘合性能.
- 通过 45% PEI-10000 (糖糖的重量) 达到最佳的结合强度.
- 干燥强度达到1.26MPa,湿强度为0.90MPa (24小时冷水) 和0.80-0.84MPa (3小时热水).
- 添加13%的EGDE可以使固化温度降低20°C.
结论:
- 基于糖的NIPU粘合剂可用于木材粘合应用.
- PEI-10000是高性能SNIPU粘合剂的有效氨基.
- 配方优化和EGDE修改可以增强SNIPU粘合性能,包括降低固化温度.
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