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探索完全基于生物的粘合剂:可持续的强力宁和5HMF粘合剂用于碎片板

Liam Dorn¹, Arthur Thirion¹, Masoumeh Ghorbani¹

¹Institute for Materials and Wood Technology, Bern University of Applied Sciences (BFH), CH-2500 Biel, Switzerland.

|June 28, 2023

概括

这项研究探讨了使用Kraft木质素和5-基甲基 (5-HMF) 的生物基粘合剂,以取代木材板中的石油基树脂. 取得了有希望的结果,但对于工业应用,需要进一步提高反应能力和强度.

科学领域:

材料科学材料科学材料科学
绿色化学绿色化学
木材复合材料木材复合材料

背景情况:

木制面板中的石油基粘合剂存在环境和健康风险.
传统粘合剂的甲排放是一个重大问题.
开发可持续且无害的粘合剂替代品对行业至关重要.

研究的目的:

调查卡夫素和5-基甲 (5-HMF) 作为木材粘合剂中和甲的替代品的潜力.
优化树脂配方和加工参数,以提高粘合性能.
评估使用新型生物基粘合剂制成的碎片板的粘合性能和物理性能.

主要方法:

树脂合成和优化通过变化的摩尔比率,温度和pH.
粘合性质的表征使用类型测量,凝时间和差分扫描热量计 (DSC).
使用自动化结合评估系统 (ABES) 和颗粒板内部结合强度 (IB) 测试 (SN EN 319) 评估结合性能.

主要成果:

在低温下实现粘合剂硬化,在pH值13.7时获得最佳结果.
加入填充剂和延伸剂提高了粘合性能,一些板材满足了P1要求.
碎片板实现了0.29N/mm2的平均内部键强度,接近P2要求.

结论:

强力宁和5-HMF显示出作为传统木材粘合剂的可持续替代品的潜力.
需要进一步的研究来提高粘合剂的反应性和强度,以便成功的工业化实施.
开发的生物基粘合剂为木制面板行业提供了一个有希望的,环保的替代品.

关键词:

5-HMF是5HMF的一种.卡夫特林尼尼 (英语:Kraft lignin) 是一种有机制的制材料.生物基粘合剂是生物基的粘合剂.颗粒板的粒子板是什么?基于木材的复合材料基于木材的面板.

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