材料科学
复合材料
抗弯强度
胶合板
极限抗拉强度
单板
吸水率
聚酯纤维
胶粘剂
杨氏模量
抗压强度
模数
实木
梁(结构)
图层(电子)
结构工程
工程类
作者
Andrey Pereira Acosta,Amanda Albertin Xavier da Silva,Rafael de Ávila Delucis,Sandro Campos Amico
标识
DOI:10.1016/j.jobe.2022.105619
摘要
Unidirectional (called laminated veneer lumber - LVL), which could be applied for structural purposes depending on the adhesive properties. However, these laminates have numerous limitations due to both physical, mechanical and interfacial properties. Thus, this study addresses the vacuum infusion processing of wood and wood-jute laminates and their characterization. Balsa wood veneers, jute fabrics, and a polyester resin were employed in the bicomponent and hybrid laminates with up to nine layers. The analyses were density, water absorption, and tensile, compressive, flexural and short beam testing. The bicomponent (wood/polyester) laminates presented poor mechanical performance due to the insufficient resin impregnation as noticed from the morphology analysis. However, the insertion of intermediate jute fabrics increased density (70–75%), short beam strength (62–67%), flexural modulus (51–116%) and strength (49–82%), tensile modulus (67–78%) and strength (19–47%), which were ascribed to the higher amount of impregnated resin among the jute layers. Also, the higher the number of layers, the poorer the interlaminar properties, especially for the bicomponent wooden laminates.
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