ABSTRACT

Composite materials, edge banding, and wooden dowels are being used in inner decoration and the construction of furniture frames. However, there is little information available concerning the withdrawal strength of various fasteners and in particular, dowels in these materials. The aim of this study was to determine the withdrawal strengths of PVC edge bandings with 0.8, 1, and 2 mm thicknesses, and dowels produced from six different wood species bonded parallel to the surfaces of a melamine coated medium density fiberboard (MDF-Lam) with polyvinyl acetate (PVAc-D4) or polyurethane (PU-D4). According to TS 4539 standard, the effect of wooden dowel species, thickness of edge banding, and the type of adhesives on the withdrawal strength were determined. Withdrawal strength values of polyurethane (PU-D4) were found 65% higher than the withdrawal strength values of polyvinyl acetate (PVAc-D4). The highest (8.35 N/mm²) withdrawal strength was obtained for oak dowels bonded with polyurethane (PU-D4) adhesive vertical to the surface of MDF-Lam. The lowest withdrawal strength value was obtained from the dowel produced from oak with polyvinyl acetate (PVAc-D4) adhesive in the samples without PVC edge banding. This value is higher than the predictive statement that allows designers to estimate the withdrawal strength of dowels.

摘要

复合材料、封边条和木销被用于内部装饰和家具框架的建造。然而，关于各种紧固件的拉拔强度的信息很少，特别是这些材料中的销钉。本研究的目的是确定厚度为 0.8、1 和 2 毫米的 PVC 封边条的拉拔强度，以及由六种不同木材制成的销钉与三聚氰胺涂层中密度纤维板 (MDF-Lam) 的表面平行粘合聚醋酸乙烯酯 (PVAc-D4) 或聚氨酯 (PU-D4)。根据TS 4539标准，确定了木销钉种类、封边厚度和粘合剂类型对拉拔强度的影响。发现聚氨酯 (PU-D4) 的拉伸强度值比聚醋酸乙烯酯 (PVAc-D4) 的拉伸强度值高 65%。最高 (8.35 N/mm² ) 用聚氨酯 (PU-D4) 粘合剂垂直于 MDF-Lam 表面粘合的橡木销钉获得了拉拔强度。在没有 PVC 封边条的样品中，从橡木制成的销钉与聚醋酸乙烯酯 (PVAc-D4) 粘合剂获得了最低的拉拔强度值。该值高于允许设计人员估计销钉拔出强度的预测陈述。