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利用松树和白树年轻木材生产低密度颗粒板
Rafał Czarnecki1, Dorota Dukarska1, Jakub Kawalerczyk1
1Department of Mechanical Wood Technology, Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 38/42, 60-627 Poznań, Poland.
Materials (Basel, Switzerland)
|March 13, 2025
概括
来自未成年松树和树木的碎片板显示出潜力,树比松树提供更好的强度和耐水性,尽管两者都比工业木材碎片板具有更高的膨胀率.
科学领域:
- 材料科学 材料科学 材料科学
- 木材科学 木材科学 木材科学
- 复合材料 复合材料 复合材料
背景情况:
- 年轻木材的特点是年环较少,为木制面板提供了替代原材料.
- 纸板生产传统上使用成熟的木材,但探索年轻木材对于可持续的林业和资源利用至关重要.
研究的目的:
- 评估从年轻松树和树木制造的碎片板的物理和机械性能.
- 为了比较年轻木质碎片板的性能与由成熟木质颗粒制成的碎片板的性能.
主要方法:
- 使用未成年松树和树木 (5-13个年环) 与尿素甲 (UF) 树脂结合制造碎片板.
- 研究的关键性质包括密度配置文件,内部键强度,曲强度,弹性模量,胀和吸水能力.
- 结果与由工业成熟木材颗粒制造的碎片板进行了比较.
主要成果:
- 来自幼松的碎片板显示出比幼树的碎片板更高的内部键强度.
- 年轻木质碎片板的曲强度与工业标准相当,但年轻松树具有较低的弹性模量 (刚性).
- 年轻的木质碎片板,特别是松树,表现出增加的胀和吸水能力,可能会影响湿环境中的耐用性.
结论:
- 从未成熟的木材,特别是树制成的碎片板,在碎片板生产中表现出有前途的特性.
- 基于树的碎片板与基于松树的青少年木质碎片板相比,表现出强度和防水的良好平衡.
- 进一步的研究是有必要的,以优化年轻木材的利用和解决挑战,如在碎片板制造中的胀和吸水.
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