不同胶粘剂在毛竹和杉木表面的润湿性  

Wetness of Various Adhesives on the Surfaces of Moso Bamboo and Chinese fir

作　　者：王戈[1] 揭二龙[2] 郭起荣[1] 黄红兰[2] 

机构地区：[1]国际竹藤网络中心,北京100102 [2]江西农业大学,江西南昌330045

出　　处：《中南林学院学报》2006年第6期155-159,共5页Journal of Central South Forestry University

基　　金：国家林业局948项目"人工林木材的NIR(近红外)材性预测及增值利用技术引进"(2002-45);江西省科技厅重点项目"毛竹竹基及竹木层积结构材研究"联合资助

摘　　要：通过渗透扩散系数来评价胶粘剂在试材表面的湿润性能,研究酚醛树脂胶(PF)、聚异氰酸酯胶(PM D I)、双组分聚异氰酸酯乳液型胶粘剂(EP I)和脲醛树脂胶(U F)4种胶粘剂分别在毛竹和杉木表面的接触角及渗透扩散速率变化规律.结果表明:4种胶粘剂在毛竹表面的润湿性均小于杉木,在毛竹竹青上的润湿性小于竹黄;对于同一毛竹或杉木表面,PM D I胶的润湿性最好,而EP I胶较差,PF、U F介于二者之间.The changing rules for contact angles of four kinds of adhesives were studied in the paper. The result shows that the wetness of all adhesives on the surface of Moso bamboo was less than that of Chinese fir, and the wetness on the knot position of bamboo was less than that on the ironer layers. On the surfaces of a same Moso bamboo or Chinese fir, the wetness of PMDI was the best, that of EPI was the worst, and that of PF orUF were between that of PMDI and EPI. Through calculating the coefficients of penetration and diffusion, the wetness of adhesives on the surfaces of Moso bamboo and Chinese fir were evaluated.

关 键 词：毛竹 杉术 胶粘剂 润湿性 接触角 

分 类 号：S781.61[农业科学—木材科学与技术] TS653.3[农业科学—林学]