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压制碳化木材料生物复合材料的制备和机械表征
Hossein Rahmani1, Augonis Algirdas2, Anhelina Shestavetska2
1Faculty of Civil Engineering and Architecture, Kaunas University of Technology, Kaunas, Lithuania. hossein.rahmani@ktu.edu.
Scientific reports
|April 29, 2025
概括
研究人员从木材粉和可持续粘合剂开发了碳化生物复合材料,实现了高强度和耐用性. 这些环保的建筑材料大大减少了二氧化碳排放,为造提供了可持续的替代品.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续建筑 可持续建筑
- 绿色化学 绿色化学
背景情况:
- 传统建筑材料对二氧化碳排放有很大贡献.
- 越来越需要可持续和环保的建筑材料.
- 木材粉是一种大量的废物,有可能用于复合材料.
研究的目的:
- 开发和评估碳化生物复合材料使用木材粉和可持续结合剂.
- 优化混合设计和碳化工艺,以提高机械性能和耐用性.
- 为了减少建筑材料中的水泥含量和相关的二氧化碳排放.
主要方法:
- 木材粉经过处理,并与粘合剂 (水泥,石灰,页岩灰) 和添加剂 (沙子) 相结合.
- 复合材料经过受控的碳化过程.
- 测试了机械性能 (压力强度,软化系数).
- 使用XRD和SEM分析了微观结构和组成.
- 测量二氧化碳排放量,并与传统材料进行比较.
主要成果:
- 用水处理的粉和20%的砂进行水处理的基于水泥的复合材料显示强度增加了44% (高达9.6MPa).
- 用页岩灰取代30%的水泥,提高了55%的强度和耐水性 (软化系数:0.55).
- 碳化增加了12%的强度和2%的密度,改善了水分耐用性.
- XRD和SEM证实了石的形成和一个凝聚的微观结构.
- 优化的配方可实现高达65%的二氧化碳排放减少.
结论:
- 碳化木材粉生物复合材料为传统建筑材料提供了高性能,可持续的替代品.
- 优化的配方表现出优越的机械性能,耐用性和减少对环境的影响.
- 这些发现支持工业采用这些生物复合材料用于轻量化墙应用,与循环经济原则保持一致.
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