压缩率与树脂浓度对改性速生杉木基本性能的影响-中南林业科技大学.PDF

第36 卷 第4 期 中南林业科技大学学报 Vol. 36 No. 4 2016 年4 月 Journal of Central South University of Forestry Technology Apr. 2016 Doi:10.14067/j .cnki.1673-923x.2016.04.020 http : // 压缩率与树脂浓度对改性速生杉木 基本性能的影响 刘明辉，洪 璐，张 倩，孙德林 （中南林业科技大学 家具与艺术设计学院，湖南 长沙4 10004 ） 摘 要：以速生杉木为基材，采用低分子量酚醛(PF) 树脂浸泡及热压密实工艺对其进行表面改性处理，并对改 性后材料的基本性能进行检测，研究了改性过程中压缩率与树脂浓度对改性材基本性能的影响。结果表明：试 件密度随压缩率与树脂浓度的增加而增加，其中压缩率的影响更为明显；随压缩率和树脂浓度的提高, 其弹性模 量、静曲强度以及硬度不断增加，当树脂浓度为50%、压缩率为10% 时，弹性模量、静曲强度、径面硬度、弦 面硬度和端面硬度分别增加了88.69%、66.07%、25.60%、29.72% 和42.91% 。同时，改性材表面耐磨性随树脂 浓度的增加而有显著提高，但受压缩率的影响很小。 关键词：速生杉木；改性处理；压缩率；树脂浓度；基本性能 中图分类号： S791.27 ；S781.7 文献标志码：A 文章编号：1673-923X(2016)04-0111-05 Effects of compression ratio and resin concentration on basic performance of fast-growing fir in modifying process LIU Ming-hui, HONG Lu, ZHANG Qian, SUN De-lin (College of Furniture and Art Design, Central South University of Forestry and Technology, Changsha 410004, Hunan, China) Abstract: Fast-growing fir was used as studying materials and then immersed with low molecular weight PF resin and compressed. The effects of compression ratio and resin concentration on basic performance of modified wood were researched. The results show that: The density of wood was improved with the increase of compression ratio and concentration of PF resin, and compression ratio were more influential. The modulus of elasticity (MOE), modulus of rupture (MOR) and hardness of treated wood were increased with the increasing of compression ratio and concentration of PF resin. The MOE, MOR and hardness in radical section, tangential section and cross section were increa