摘要
为探究环保的木材改性方法,以水溶性乙烯基单体甲基丙烯酸-2-羟乙酯(HEMA)和N-羟甲基丙烯酰胺(NMA)为改性剂,处理速生杨木,并考察改性剂配比、浓度对改性材性能的影响。结果表明,改性剂HEMA与NMA的质量比为80∶20、浓度40%时,改性材增重率为40.46%,抗体积膨胀率为60.77%,抗弯强度和弹性模量分别提高20.19%和38%;且同样的改性效果时,该改性剂相比传统改性处理所需的处理温度低、用量少。
In order to develop environmentally-friendly wood modification methods,water soluble vinyl monomers,2-hydroxyethyl methacrylate(HEMA)and N-methylol acrylamide(NMA)were used as modifiers to treat poplar wood from plantation forests.Effects of addition ratio and concentration of the modifiers on performance of the treated wood were investigated.Results showed that 40.46%of weight percent gain(WPG),60.77%of anti-volume swelling efficiency(ASE),20.19%of modulus of rupture(MOR)and 38.00%of modulus of elasticity(MOE)of the treated samples were obtained by optimum treatment processes such as 80∶20 of HEMA/NMA addition ratio and 40%of modifiers concentration.Therefore,wood modification could be conducted under lower treatment temperature with less modifier usage,compared to traditional modification methods.
作者
仇洪波
李改云
范东斌
韩雁明
储富祥
QIU Hong-bo;LI Gai-yun;FAN Dong-bin;HAN Yan-ming;CHU Fu-xiang(Research Institute of Wood Industry,Chinese Academy of Forestry;Key Laboratory of Wood Science and Technology of State Forestry Administration,Beijing 100091,China)
出处
《木材工业》
北大核心
2018年第5期6-10,共5页
China Wood Industry
基金
国家重点研发计划“人工林木材材质改良的化学基础研究”(2017YFD0600203)。
关键词
甲基丙烯酸-2-羟乙酯
N-羟甲基丙烯酰胺
化学改性
杨木
接枝反应
性能
2-Hydroxyethyl methacrylate(HEMA)
N-methylol acrylamide(NMA)
chemical modification
polar wood
grafting reaction
performance
作者简介
仇洪波(1989—),男,中国林科院木材工业研究所博士研究生。;责任作者:李改云,女,中国林科院木材工业研究所研究员。
