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Combinations of wood and silicate Part 6. Biological resistances of wood-mineral composites using water glass-boron compound system

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Summary

Wood-mineral composites were made by introducing inorganic substances into wood using the water glass (sodium silicate)-boron compound system (double treatment). Composites were also prepared with boron compounds alone (single treatment), and biological resistances of the two types of composites were evaluated and compared.

After the leaching procedure, the composites using the water glass-boron compound system showed generally excellent termite resistances with the negligible weight losses of specimens and high mortalities of workers and soldiers. On the contrary, the single treatment and the double treatment using the reactants of non-boron compounds showed slight or little resistances against termite attacks, accounting for the high leachability of the inorganic substances formed in wood and/or low effectiveness of the chemicals.

Also, the water glass-boron compound system was found to enhance greatly the decay resistances if water-soluble inorganic substances were fully removed out from the specimens. The formation of insoluble inorganic substances in the water glass-boron compound system proved to contribute much to the enhancement of biological resistances.

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Authors and Affiliations

  1. Department of Natural Resources Process Engineering, Faculty of Science and Engineering, Shimane University Matsue, 690-8504, Shimane, Japan

    T. Furuno

  2. Wood Research Institute, Kyoto University Uji, 611-0011, Kyoto, Japan

    Y. Imamura

Authors
  1. T. Furuno
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  2. Y. Imamura
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Additional information

The authors express their appreciation to Mr. Ryuji Tadokoro and Mr. Tsuyoshi Kuriu for their assistance in sample preparation and biological testing, respectively.

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Furuno, T., Imamura, Y. Combinations of wood and silicate Part 6. Biological resistances of wood-mineral composites using water glass-boron compound system. Wood Sci.Technol. 32, 161–170 (1998). https://doi.org/10.1007/BF00704839

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  • DOI: https://doi.org/10.1007/BF00704839

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