摘要
通过硅烷偶联剂改性环氧树脂,填充脱木质素椴木单板,制备透明木材。利用场发射扫描电子显微镜(FE-SEM)、傅里叶变换红外光谱仪(FTIR)和热重分析仪(TGA)等仪器,分析了其微观构造、化学结构和热稳定性。结果表明,经硅烷偶联剂改性环氧树脂制备的透明木材,改性环氧树脂填充了木材内部孔道,其环氧基、胺基特征吸收峰明显减弱,木材中游离—OH数量减少,表明偶联剂成功接枝,改性处理增强了环氧树脂和木材纤维之间的界面结合力;偶联剂与树脂质量比m(KH550):m(LER0350)为1∶15的改性透明木材具有良好的热稳定性。
In order to improve the interfacial compatibility of resin and wood in transparent wood, the modified epoxy resin was modified by silane coupling agent and filled into delignified basswood veneer to prepare transparent wood. The microstructure, chemical functional groups and thermal stability were analyzed by SEM, FTIR and TG. The results showed that the modified epoxy resin filled the inner pores of wood, and the absorption peak of epoxy and amines after the modified epoxy resin were obviously weakened and the amount of free --OH in wood decreased, indicating the successful grafting of coupling agent, which enhanced the interfacial bonding force between the epoxy resin and the wood fiber. The modified transparent wood with coupling agent and resin material ratio m （KH550） ： m （LER0350） at 1 ： 15 had good thermal stability.
作者
李美玲
庞瑶
李南
单家成
刘毅
Li Meiling;Pang Yao;Li Nan;Shan Jiactleng;Liu Yi(MOE Key Laboratory of Wood Materials Science and Application,Beijing Forestry University,Beijing 100083,China)
出处
《中国人造板》
2018年第8期22-25,38,共5页
China Wood-Based Panels
基金
北京市自然科学基金资助项目(6184045)
北京林业大学大学生创新创业训练计划(S201610022081)
关键词
透明木材
硅烷偶联剂
环氧树脂
热稳定性
transparent wood
silane coupling agent
epoxy resin
thermal stability
