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Wood Research and Technology

Holzforschung

Cellulose – Hemicelluloses – Lignin – Wood Extractives

Editor-in-Chief: Faix, Oskar

Editorial Board: Daniel, Geoffrey / Militz, Holger / Rosenau, Thomas / Salmen, Lennart / Sixta, Herbert / Vuorinen, Tapani / Argyropoulos, Dimitris S. / Balakshin, Yu / Barnett, J. R. / Burgert, Ingo / Rio, Jose C. / Evans, Robert / Evtuguin, Dmitry V. / Frazier, Charles E. / Fukushima, Kazuhiko / Gindl-Altmutter, Wolfgang / Glasser, W. G. / Holmbom, Bjarne / Isogai, Akira / Kadla, John F. / Koch, Gerald / Lachenal, Dominique / Laine, Christiane / Mansfield, Shawn D. / Morrell, J.J. / Niemz, Peter / Potthast, Antje / Ragauskas, Arthur J. / Ralph, John / Rice, Robert W. / Salin, Jarl-Gunnar / Schmitt, Uwe / Schultz, Tor P. / Sipilä, Jussi / Takano, Toshiyuki / Tamminen, Tarja / Theliander, Hans / Welling, Johannes / Willför, Stefan / Yoshihara, Hiroshi

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Volume 68, Issue 7

Issues

Synthesis of aluminum hydroxide thin coating and its influence on the thermomechanical and fire-resistant properties of wood

Nana Wang
  • Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
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/ Yanchun Fu
  • Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
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/ Yongzhuang Liu
  • Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
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/ Haipeng Yu
  • Corresponding author
  • Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
  • College of Material Science and Engineering, Northeast Forestry University, No. 26 Hexing Road, Xiangfang District, Harbin 150040, China
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/ Yixing Liu
  • Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
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Published Online: 2014-02-07 | DOI: https://doi.org/10.1515/hf-2013-0196

Abstract

Aluminum hydroxide [Al(OH)3] film on wood substrate has been synthesized by means of the hydrothermal (HT) method for improvement of wood’s mechanical properties and resistance to combustion. The HT temperature was set to 100°C and 120°C, and the reaction time varied from 4 h to 10 h. X-ray diffraction (XRD) and X-ray photoelectron spectrometry (XPS) results show that the thin film grown on wood surface was amorphous Al(OH)3 and the relative crystallinity of treated woods slightly improved. SEM observation revealed that the Al(OH)3 film is composed of regular micro/nano-sized spheres, whose production and size increase with the reaction time, and some AlO(OH) structures emerged at 120°C with reaction times longer than 6 h. The storage modulus of the wood treated at 100°C and 120°C for 8 h can be improved by 30%, while the viscoelastic properties are also influenced by the HT treatment and Al(OH)3 coating. The limiting oxygen index of raw wood rose from 24.7% to 27.9% after the treatment, which can be interpreted as a moderate improvement of the fire resistance.

Keywords: aluminum hydroxide; coating with Al(OH)3; dynamic mechanical analysis (DMA); fire resistance; limiting oxygen index (LOI) of combustion; wood; X-ray diffraction (XRD); X-ray photoelectron spectrometry (XPS)

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About the article

Corresponding author: Haipeng Yu, College of Material Science and Engineering, Northeast Forestry University, No. 26 Hexing Road, Xiangfang District, Harbin 150040, China, Phone: +86 451 8219 1756, Fax: +86 451 8219 0134, e-mail:


Received: 2013-10-10

Accepted: 2014-01-10

Published Online: 2014-02-07

Published in Print: 2014-10-01


Citation Information: Holzforschung, Volume 68, Issue 7, Pages 781–789, ISSN (Online) 1437-434X, ISSN (Print) 0018-3830, DOI: https://doi.org/10.1515/hf-2013-0196.

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