竹柳枝丫材性能及重组木制造

竹柳Salix discolor作为一种速生木材在人造板的应用方面具有较大的潜力。运用扫描电子显微镜、红外吸收光谱仪对竹柳枝丫材的纤维形态、化学成分、胶接界面进行了分析, 并测定了竹柳枝丫材的接触角。结果表明:竹柳纤维的平均长度为0.781 mm, 壁腔比小于1, 是很好的纤维原料, 总纤维素含量高, 润湿性较好。在此基础上研究了重组木的密度和酚醛树脂胶黏剂的浸胶时间对板材性能的影响。结果表明:竹柳枝丫材重组木的密度为0.9 g·cm-3, 浸胶时间为20 s时制得的板材的性能最佳。

Salix discolor crotches and its scrimber

Crotches of Salix discolor, a fast-growing wood with great potential as a reinforced material in wood-based panels. Study the material properties and find out the appropriate process parameters of manufacturing scrimber of Salix discolor by using PF for adhesives. Not only alleviate the problem of shortage of raw materials has also increased the planting area of economic income. The study were analyzed with a scanning electron microscope (SEM) and infrared spectrometer. Fiber morphology, chemical composition, and adhesive interface were then determined; next the surface contact angle of the crotches was tested. Finally, the effects of product density and dipping time of a phenol resin adhesive on the properties of scrimber were studied with GB/T 17657-2013. Results showed that the average fiber length from Salix discolor crotches was 0.781 mm and the ratio of wall to cavity was less than 1. In addition, crotches had a high cellulose content and favorable wettability. The scrimber had a product density of 0.9 g·cm-3 and a dipping time 20 s. Thus, this cultivar with its average fiber length and the ratio of wall to cavity meant it was a good fiber material, and its product density and dipping time showed excellent physical and mechanical properties.