轻量级,坚固和透明的木材薄膜由毛细管驱动的自疏散产生
Feng Chen1,2,3, Maximilian Ritter3,4, Yifan Xu1,2
1Hubei Provincial Engineering Research Center of Surface and Interface Regulation Technology and Equipment for Renewable Energy Materials, Jianghan University, Wuhan, 430056, China.
Small (Weinheim an der Bergstrasse, Germany)
|May 21, 2024
概括
本研究介绍了一种可持续的方法,可以在不用热压制的情况下制造透明木材. 在干燥过程中使用毛细血管力使脱色的木材变软,并自密化成强,透明的薄膜.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 可持续工程 可持续工程
背景情况:
- 木材修饰,包括脱和加密,可以产生强度和透明度更高的材料.
- 目前的加工方法通常依赖于耗能密集的热压,需要更可持续的替代品.
研究的目的:
- 开发一种节能和可持续的方法来生产透明木材.
- 为了消除在木材密度和透明木材制造中需要热压的需要.
主要方法:
- 用一种轻微的膨胀过程,用离子液体和水混合物软化了脱色的木材.
- 在简单的干燥过程中,通过自然毛细管力实现了密集,形成层层的板结构.
- 没有采用聚合物矩阵透或机械压缩.
主要成果:
- 成功制备了具有约70%光传导率和>95%光雾的透明木材薄膜 (厚度约150微米).
- 与脱木材相比,自我密集的木材薄膜的强度和刚度增加了五倍.
- 由于低密度和密集的结构,实现了高特异性拉伸强度 (282 MPa cm3 g-1) 和弹性模量 (31 GPa cm3 g-1).
结论:
- 一个简单和节能木材纳米技术的方法被证明是可持续的透明木材生产.
- 这种方法直接将脱木材转化为透明木材,绕过传统的聚合物透和热压步骤.
- 这些发现为木材纳米技术中更环保的材料和加工技术铺平了道路.
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