Properties of Wood-based Composites Laminated with Aluminum Plates

表底層鋁板層積木質複合板之性質

黃耀富(Yaw-Fuh Huang) ； 林錦盛(Jing-Sheng Lin) ； 林仁政(J-C Lin) ； 林志益(J-Y Lin) ； 鄭坤煌(K-H Cheng)

《林產工業》 20卷3期 (2001/09) Pp. 207-215

https://doi.org/10.6561/FPI.2000.20(3).4

摘要

以低密度之白塞木（Ohcroma spp., Balsa），台灣泡桐（Paulownia taiwaniana T. W. Hu et H. J. Chang, Paulownia）及木油桐（Aleurites Montana Wils, Wood oil tree）為原料，使用尿素甲醛樹脂膠合劑（UF）製造厚度10 mm及15 mm之心層材料後，以厚度為1.0 mm，1.4 mm及2.0 mm砂磨或未砂磨之鋁板為表底層材料，再以酚甲醛樹脂膠合劑（PF）或環氧樹脂膠合劑（Epoxy）膠合製造複合板。試驗結果得知鋁板與心層材料以環氧樹脂膠合時，主劑：硬化劑以100:100為宜，宜在1-7天之養生時間內不影響膠合拉伸強度。複合板之最適佈膠量隨心層材料比重之增加而減少。鋁板經研磨後可提高膠合拉伸強度。各項強度性質則受樹種、心層材料厚度及鋁板厚度而有增減。

關鍵字

白塞木 ； 台灣泡桐 ； 木油桐 ； 林質複合板

並列摘要

A high-strength composite made of plywood sandwiched with metal plates has been made. This type of material, however, is very high in density. The objective of this study was to manufacture low-density wood/metal composites and to evaluate the properties of these composites. Wood boards 10 mm and 15 mm in thickness were made by edge gluing cross-grained and flat-grained blocks as core layer, and these boards were sandwiched with 1.0 mm, 1.4 mm, or 2.0 mm thick aluminum plates as surface layer. Three wood species, balsa (Ochroma spp.), Taiwan paulownia (Paulownia tanwaniana), and wood oil tree (Aleurites montana), were used for core. The wood core was assembled with urea-formaldehyde (UP) adhesive resin and the core layer laminates the aluminum plates by phenol-formaldehyde (PF) and epoxy resins. Results showed that the density of composite ranged from 0.5 g/cm^3 to about 0.98 g/cm^3, depending upon species and thickness of the core and the surface. Mechanical properties of the composite increased with increasing density of core and increasing thickness of aluminum plate, but decreased with increasing core thickness. With the epoxy resin, 100:100 resin to hardener mix ratio gave the best wood to metal adhesion, and with this epoxy glue mix the adhesive bond strength did not change within 7 days of post-curing period. The optimal amount of glue level decreased with increasing density of the core. Sanding the aluminum plates with #80 (80-grit) sandpaper improved adhesive bond strength.

並列關鍵字

Balsa ； Taiwan paulownia ； Woodoil tree ； Wood-based composite