生物聚氨结合剂的使用,用于开发工程木材复合材料
Sigitas Vėjelis1, Agnė Kairytė1, Saulius Vaitkus1
1Building Materials Institute, Faculty of Civil Engineering, Vilnius Gediminas Technical University, Linkmenu Str. 28, LT-08217 Vilnius, Lithuania.
Polymers
|June 13, 2025
概括
由大麻片和生物聚氨粘合剂制成的工程木材复合材料显示出有前途的强度性能. 这些可持续材料为传统木制品提供了可行的替代品,具有可调节的湿度和改进的强度指标.
科学领域:
- 材料科学 材料科学 材料科学
- 复合材料 复合材料 复合材料
- 可持续工程 可持续工程
背景情况:
- 工程木制品在建筑和制造业中至关重要.
- 对于可持续和环保的建筑材料的需求日益增长.
- 生物聚氨结合剂为传统结合剂提供了一个可再生的替代品.
研究的目的:
- 开发和描述使用大麻和生物聚氨粘合剂的工程木材复合材料.
- 研究粘合剂含量和压力对材料性能的影响.
- 将开发的复合材料的性能与工业标准进行比较.
主要方法:
- 使用不同比例的麻片和生物聚氨粘合剂 (0.5-1.5) 准备样本.
- 在样本准备过程中,应用了不同的压力水平 (1.5,3.0,4.5 MPa).
- 机械性能 (曲,拉力,压力强度) 和湿度指标 (吸收,胀) 被评估.
- 使用低火焰方法评估易燃性,并测试扩展石墨的合并.
主要成果:
- 粘合剂含量和压力都对强度和湿度指标产生了重大影响.
- 实现了17MPa的曲强度,7MPa的拉伸强度和11MPa的压力应力.
- 吸水率在35%至10%之间,胀率在26%至10%之间.
- 最初的标本是易燃的,但结合扩展石墨导致了不可燃材料.
结论:
- 大麻板和生物聚氨粘合剂可以创建高强度的工程木材复合材料.
- 与许多工业木制品相比,开发的复合材料具有更高的强度.
- 材料的耐湿性和易燃性可以通过配方有效地管理,特别是用扩展石墨.
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