聚氨酯胶黏剂；湿材胶合；热机械分析；核磁共振技术；胶合木蠕变性能
Abstract
The chemical structure, polymerization characteristics of the commercial onecomponent polyurethane were analyzed with 13C NMR. The viscoelastic properties of bonded joints, ambient creep and shear properties of glulam beams were evaluated by thermomechanical analyses. The results showed that onecomponent polyurethane displayed a significant temperaturedependent creep, and the ambient creep was not the main factor because it was inhibited. The equilibrium moisture content (EMC) of the wood before and after bonding had a great influence on bonding performance of polyurethane. The mechanical properties of glulam from green gluing could not meet the requirement of any structure standards, but good bonding performance of wood after redrying was observed.
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参考文献
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基金
收稿日期：2008-07-02修回日期：2009-01-09作者简介：那斌(1971—)，副教授，博士，研究方向为人造板与胶黏剂，木材工业能源与环境。Email: nabin8691@hotmail.com。引文格式：那斌,Pizzi A.,卢晓宁. 湿材胶合用单组分聚氨酯胶黏剂及其胶合木蠕变性能研究[J]. 南京林业大学学报:自然科学版,2009,33(4):121-124.
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