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林业科学 ›› 2014, Vol. 50 ›› Issue (6): 175-180.doi: 10.11707/j.1001-7488.20140623

• 研究简报 • 上一篇    下一篇

木质素磺酸铵的糖含量对无胶中密度纤维板性能的影响

刘芳延, 郭明辉, 张帆, 刘祎, 张永明   

  1. 东北林业大学生物质材料科学与技术教育部重点实验室 哈尔滨 150040
  • 收稿日期:2013-08-30 修回日期:2014-03-12 出版日期:2014-06-25 发布日期:2014-07-07
  • 基金资助:

    “十二五”国家科技支撑计划项目(2011BAD08B03)。

Influence of Sugar Content of Ammonium Lignosulfonate on the Properties of Binderless Medium Density Fibreboard

Liu Fangyan, Guo Minghui, Zhang Fan, Liu Yi, Zhang Yongming   

  1. Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education, Northeast Forestry University Harbin 150040
  • Received:2013-08-30 Revised:2014-03-12 Online:2014-06-25 Published:2014-07-07
  • Contact: 郭明辉

关键词: 木质素磺酸铵, 糖含量, 无胶中密度纤维板, 物理力学性能

Abstract:

This article mainly studied the influence of sugar content of ammonium lignosulfonate on the physical and mechanical properties of binderless medium density fibreboard. The purified ammonium lignosulfonate was prepared by alkali-solution and acid-isolation. The two different binderless medium density fibreboards (OLF and PLF) were produced with wood fiber as basic phase and original ammonium lignosulfonate (OL) and purified ammonium lignosulfonate (PL) as filler by flat-press process. The phenol-sulfuric-acid method was used to determine the sugar content. The chemical composition, degree of crystallinity and microstructure were characterized by fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscope (SEM), respectively. The results showed that the sugar content of OLF was 22.38%, while the sugar content of PLF was 13.37%. The physical and mechanical properties of OLF were better than that of PLF. The result of FTIR showed that hydroxyl of PLF decreases obviously, which was that it didn't help the forming of hydrogen bond. The XRD result showed that the relative crystallinity of OLF is higher than that of PLF. The SEM showed that the components of the OLF distributed uniformly, and combined closely among wood fiber.These results told that the binderless medium density fibreboard with ammonium lignosulfonate with higher sugar content as binder possessed better physical and mechanical properties.

Key words: ammonium lignosulfonate, sugar content, binderless medium density fibreboard, physical and mechanical properties

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