水性环氧树脂浸渍改性对2种速生材性能的影响  

Effect of Impregnation Modification of Water-borne Epoxy Resin on Properties of 2 Fast-growing Wood

作　　者：郝潇寒 李明丽 黄亦帅 孙翊华 郭垂根 Hao Xiaohan;Li Mingli;Huang Yishuai;Sun Yihua;Guo Chuigen(College of Materials and Energy,South China Agricultural University,Guangzhou Guangdong 510642,China;Institute of Biomass Engineering,South China Agricultural University,Guangzhou Guangdong 510642,China)

机构地区：[1]华南农业大学材料与能源学院,广东广州510642 [2]华南农业大学生物质工程研究院,广东广州510642

出　　处：《西南林业大学学报（自然科学）》2023年第1期156-163,共8页Journal of Southwest Forestry University：Natural Sciences

基　　金：国家自然科学基金面上项目(32071694)资助;广州市科技计划项目(201905010005)资助。

摘　　要：以水性环氧树脂为改性剂,采用真空加压浸渍的方法改性速生杨木、松木,并探究其在物理、力学及表面性能等方面的改性效果。结果表明:水性环氧树脂可浸渍到木材内部,填充木材的管孔和细胞间隙,且在木材内部实现交联固化;浸渍处理杨木和松木的增重率分别为49.11%和30.52%,吸水率分别降低了49.60%和39.43%,提高了速生材的尺寸稳定性;杨木的抗弯弹性模量、抗弯强度和顺纹抗压强度分别提高了22.10%、70.55%和48.71%,松木分别增加24.91%、48.19%和25.33%,较好的提高了速生材的机械性能;浸渍材的表面耐磨性提高,粗糙度降低,水接触角增大,光泽度降低,颜色饱和度更高。Water-borne epoxy resin as a modifier agent was used to modify poplar and pine by vacuum pressure impregnation,and explored its modification effects in physics,mechanics and surface properties in this study.The results showed that the water-borne epoxy resin can be impregnated into the interior of wood,fill the pipe hole and cell gap of wood successfully,which realized cross-linking and curing in the interior of wood.After impregnation,the WPG of poplar and pine attained 49.11%and 30.52%respectively,WU decreased 49.60%and39.43%separately,which improved the dimensional stability of fast-growing wood.The MOR,MOE and compressive strength of poplar increased by 22.10%,70.55%and 48.71%respectively,and that of pine increased by24.91%,48.19%and 25.33%,which improved the mechanical properties of fast-growing wood;the surface wear resistance of impregnated wood was improved and the roughness was reduced,the contact angle increased and the gloss reduced,while the color of impregnated wood became more saturated.

关 键 词：速生材 水性环氧树脂 浸渍改性 力学性能 表面性能 

分 类 号：S781.7[农业科学—木材科学与技术]