期刊
POLYMERS
卷 14, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/polym14040843
关键词
plywood; natural fiber-reinforcement; cellulose; flax
This research investigates the influence of different cellulose and flax-fiber reinforcement materials on the mechanical properties of plywood. The results show that hydrophobic pretreatment of cellulose improves certain mechanical properties while decreasing modulus of elasticity.
This research presents the influence of two different cellulose (hydrophobic pretreated/non-pretreated) and one flax-fiber unidirectional nonwoven low areal weight fiber reinforcements on the mechanical properties of urea-formaldehyde bonded five layered beech (Fagus sylvatica L.) plywood as an alternative to commonly used synthetic fiber reinforcements. The results display divergent trends regarding the improvement of the mechanical properties-modulus of elasticity, modulus of rupture, tensile strength, shear strength, and screw withdrawal resistance. The non-treated cellulose and flax reinforcing nonwoven fabrics revealed similar mechanical behaviors. The hydrophobic pretreatment of cellulose nonwovens improved the performance of plywood regarding tensile strength (10-11%), shear strength (7-16%), screw withdrawal resistance (11-15%), and modulus of rupture (0-2%), but lowered modulus of elasticity (2-3%) compared to the reference.
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