期刊
POLYMER COMPOSITES
卷 43, 期 8, 页码 5465-5475出版社
WILEY
DOI: 10.1002/pc.26852
关键词
bamboo scrimber; bonding strength; roughness; shear strength; wettability
资金
- National Natural Science Foundation of China [31971738]
The adhesive ability of bamboo scrimber is crucial for its application in large-scale engineering structures. Cold-pressed bamboo scrimber with different sanding mesh and density was bonded using polyurethane resin. The concentration of adhesive on the surface facilitated anchoring into the material. The study examined shear strength and immersion peel strength as parameters to evaluate glue quality. The optimal gluing characteristics were obtained with 120 grit sandpaper and a density of 1.15 g/cm(3).
The adhesive ability of bamboo scrimber is critical for its use in large-scale engineering structures. Cold-pressed bamboo scrimber with varying sanding mesh and density was made and then bonded with polyurethane resin. The adhesive was concentrated on the surface, assisting the anchoring into the material surface. The shear strength and immersion peel strength are studied as parameters to determine the glue qualities. The optimum gluing characteristics were obtained using a 120 grit sandpaper and a density of 1.15 g/cm(3). The results indicated that at a density of 1.15 g/cm(3), the gluing characteristics rose initially and subsequently dropped as the number of sanding meshes increased. The bonding strength improved with increasing density when 120-mesh sanding was used. With increasing density, the bamboo fiber distribution inside the material got more compact, while the resin dispersion became more uniform. Thus, the surface porosity and roughness were decreased.
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