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Abstract

Engineering

基于木材的高性能复合材料的制造与设计

Published: November 9th, 2019

DOI:

10.3791/60327

1Wood Materials Science, Department of Civil, Environmental and Geomatic Engineering, ETH Zurich, 2Cellulose & Wood Materials, Functional Materials, EMPA, 3Design and Arts, Lucerne University of Applied Sciences and Arts, 4Aerospace Manufacturing Technologies, Aerospace Engineering, Delft University of Technology, 5Stora Enso Oyj

Abstract

脱土化木材是一种具有潜在前景和可持续性的新型材料,由于其优良的机械性能,具有替代合成材料(如玻璃纤维增强复合材料)的潜力。然而,在潮湿状态下,去水化木材相当脆弱,这使得搬运和成型具有挑战性。在这里,我们介绍了两种制造工艺,即闭模致密化和真空致密,以生产基于脱硝木材的高性能纤维素复合材料,包括评估其优点和局限性。此外,我们还就如何在生命周期结束时重新使用或分解复合材料提出了策略。闭模致密化的优点是无需精密的实验室设备。简单的螺丝夹或压机可用于致密。对于具有简单几何形状和大曲率半径的小零件,我们建议使用此方法。开模工艺中的真空致密化适用于较大的物体和复杂的几何形状,包括曲率的小半径。与闭模工艺相比,开模真空法只需要制造一个模腔。

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