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使用小麦质蛋白蛋白来开发具有出色的防水能力的环保氧基粘合剂
Xutao Du1, Zhi Li1, Jun Zhang1
1Yunnan Key Laboratory of Wood Adhesives and Glue Products, Southwest Forestry University, Kunming 650224, PR China.
International journal of biological macromolecules
|June 12, 2024
概括
这项研究开发了一种新的木材粘合剂,使用尿素-酸盐树脂和小麦质蛋白. 新型WP-UG粘合剂提供了更好的抗水性和粘合强度,为甲基提供了更绿色的替代品.
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
- 绿色化学 绿色化学
背景情况:
- 甲基粘合剂释放有害的挥发性有机化合物 (VOC).
- 现有的尿素-酸盐树脂缺乏足够的抗水性和粘合强度,无法广泛使用.
- 开发环保和高性能木材粘合剂对于可持续产业至关重要.
研究的目的:
- 通过结合小麦质蛋白来增强尿素-质树脂的性能.
- 为了创造一种耐水性和高强度的木材粘合剂,作为甲的替代品.
- 为了研究改造的粘合剂的化学相互作用和结构性质.
主要方法:
- 用于制备尿素-质素 (UG) 前聚合物及其与小麦质蛋白 (WP) 的组合,以形成WP-UG粘合剂.
- 使用FTIR,XRD和XPS进行化学反应的表征.
- 对WP-UG合板的热稳定性分析.
- 通过粘合强度测试来评估干燥和湿强度和耐水性.
主要成果:
- FTIR,XRD和XPS证实了UG预聚合物和WP之间的化学结合.
- 与UG树脂相比,WP-UG合板具有更高的热稳定性.
- WP-UG粘合合板的干强度达到了1.39MPa (35%比UG增加),湿强度达到了0.87MPa (314%比UG增加).
- 在63°C的水中浸泡3小时后,结合强度显著提高到0.89 MPa.
结论:
- 加入小麦质蛋白显著提高了尿素-质树脂的耐水性和粘合强度.
- 增强的特性归因于由WP.形成的更复杂和更紧密的交叉连接网络.
- 这种基于糖的粘合剂是木材行业中甲基粘合剂的可行,绿色替代品.
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