摘要
以工业大麻杆为原料制备大麻杆层积材和细木工板,研究不同厚度、皮部结构和不同施胶量对其力学性能的影响,探索制备大麻杆结构材的工艺参数。结果表明:随着厚度的增加,大麻杆层积材的力学性能整体呈下降趋势;皮部结构对层积材的弹性模量有改善作用,但对层积材的静曲强度产生不利影响;随着施胶量的增加大麻杆层积材的弹性模量呈现先减小后增大的趋势,静曲强度呈先增大后减小的趋势。细木工板的静曲强度和弹性模量随着厚度的增加其变化规律不明显,皮部结构能提高细木工板的弹性模量,但对细木工板的静曲强度有不利影响。
The technological parameters to prepare industrial hemp structural materials were explored,and the effects of different thickness,cortex structure and adhesive dosage on the mechanical properties of laminated wood and core-board made of industrial hemp as raw material were studied.The results showed that the overall mechanical proper-ties of laminated wood made of hemp stalk manifested downward with increment of the thickness.The cortex structure could improve the elastic modulus,but adversely affected static bending strength of the laminated wood.The elastic modulus of the hemp stalk laminated wood was decreased at first and then increased,whereas the modulus of rupture was increased first and then decreased along with the increase of adhesive dosage.There were no obvious variations in the static bending strength nor in the elastic modulus of the hemp stalk core-board when the board thickness was increased. The cortex structure could improve the elastic modulus,but adversely affected static bending strength of the core-board.
出处
《西南林业大学学报（自然科学）》
CAS
2013年第6期103-106,共4页
Journal of Southwest Forestry University：Natural Sciences
基金
国家自然科学基金项目(31060098
31200437)资助
云南省面上项目(2010CD064)资助
云南省重点学科建设项目(XKZ200903)资助
关键词
工业大麻杆
层积材
细木工板
力学性能
industrial hemp
laminated wood
core-board
mechanical properties
