摘要
对刨花板的吸水性、吸湿性及其对力学性能的影响进行测定,结果表明,浸泡时间、试件大小和水的温度,对吸水特征均有明显影响,在吸水厚度膨胀率和吸水率之间,存在线性相关关系;相对湿度的变化,对刨花扳的吸湿厚度膨胀率和平衡含水率亦有明显影响。特别是相对湿度达到65%以上时,影响更为显著,并导致其静曲强度和平面抗拉强度显著降低。
Water absorption and hygroscopicity of the UF-particieboard and their effects on its mechanical properties have been studied. The results show that the water temperature, specimen size and soaking time have a remarkable effect on water absorption, and a linear relationship exists between the water absorption and thickness swelling of the particle board. The change of the relative humidity also has a pronounced effect on the equilibrium moisture content and thickness swelling, especially when the relative humidity is over 65%, the effect is even more striking, causing the static bending strength and bonding strength to decrease markedly.
出处
《中南林学院学报》
CSCD
1992年第2期178-183,共6页
Journal of Central South Forestry University
基金
福建省科学基金
关键词
刨花板
吸水性
吸湿性
力学性能
particle board, water absorption, hygroscopicity, static bending strength, bonding strength
