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Official Journal of the Japan Wood Research Society

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Preservative properties of vapor-boron-treated wood and wood-based composites

Abstract

The treatability of wood (sapwood ofCryptomeria japonica D. Don) and wood-based composites (particleboard, waferboard, medium-density fiberboard, plywood) with vapor-boron was good, and the treated materials proved to be resistant to decay fungi and subterranean termites in laboratory bioassays. No difference in effectiveness was noted between vapor-boron and liquid-boron treatment of wood. Toxic threshold values determined for solid wood were 0%–0.24%, 0.26%–0.51%, and 0.26%–0.51% BAE (boric acid equivalent), respectively, against the white-rot fungusTrametes versicolor (L.: Fr.) Pilat, the brown-rot fungusFomitopsis palustris (Berk. et Curt.), and the subterranean termiteCoptotermes formosanus Shiraki. A concentration of less than 1% BAE seemed sufficient to control biological attacks on composites, although the toxic limits could not be determined more accurately because of the tested range of boron retention. High boron retention was needed to meet the performance requirements for slow-burning materials when a fire-retardant agent was not incorporated into the glue line.

References

  1. 1.

    Carr DR (1959) Boron as a wood preservative. Rec Ann Conv Br Wood Preserv Assoc 105–135

  2. 2.

    Cockcroft R, Levy JF (1973) Bibliography on the use of boron compounds in the preservation of wood. J inst Wood Sci 6(3):28–37

    CAS  Google Scholar 

  3. 3.

    Bunn R (1974) Boron compounds in timber preservation: an annotated bibliography. New Zealand Forest Service technical paper no. 60

  4. 4.

    Dickinson DJ. Murphy RJ (1989) Developments of boron-based wood preservatives. Rec Ann Conv Br Wood Preserv Assoc 35–42

  5. 5.

    Drysdale JA (1994) Boron treatments for the preservation of wood: a review of efficacy data for fungi and termites. The International Research Group on Wood Preservation document no. IRG/ WP 94–30037

  6. 6.

    Grace JK (1997) Review of recent research on the use of borates for termite prevention. In: Proceedings of the 2nd international conference on wood protection with diffusible preservatives and pesticides. Forest Products Society Madison, WI, USA, pp 85–92

    Google Scholar 

  7. 7.

    Tsunoda K (1999) Application of borates to wood preservation (in Japanese). Mokuzai Hozon (Wood Preservation) 25:48–58

    Article  Google Scholar 

  8. 8.

    Ishihara S (1989) Boron and its compounds as wood fire retardants (in Japanese). Mokuzai Hozon (Wood Preservation) 15:248–260

    Article  Google Scholar 

  9. 9.

    Ishihara S (1981) Synergistic effect of alkali metals on fire proofing properties of boric acid-containing melamine-formaldehyde condensates (in Japanese with English summary). Zairyo (J Soc Mater Sci Jpn) 30:725–730

    CAS  Article  Google Scholar 

  10. 10.

    Vinden P, Fenton T, Nasheri K (1985) Options for accelerated boron treatment: a practical review of alternatives. International Research Group on Wood Preservation document no. IRG/WP/3329

  11. 11.

    Murphy RJ, Turner P (1989) A vapour phase treatment of manufactured wood based board materials. Wood Sci Technol 23:273–279

    CAS  Article  Google Scholar 

  12. 12.

    Turner P, Murphy RJ, Dickinson DJ (1990) Treatment of wood based panel products with volatile borates. International Research Group on Wood Preservation document no. IRG/WP/3616

  13. 13.

    Burton R, Bergevoet T, Nasheri K, Vinden P, Page D (1990) Gaseous preservative treatment of wood. International Research Group on Wood Preservation document no. IRG/WP/3631

  14. 14.

    Bergevoet A, Burton R, Nasheri K, Page D, Vinden P (1992) Gaseous boron treatments of wood and wood products. International Research Group on Wood Preservation document no. IRG/WP/3691-92

  15. 15.

    Hashim R, Dickinson D, Murphy R, Dinwoodie J (1992) Effect of vapour boron treatment on mechanical properties of wood based board materials. International Research Group on Wood Preservation document no. IRG/WP/3727-92

  16. 16.

    Murphy RJ, Dickinson DJ, Turner P, Wickens PJ, Hashin R (1993) Vapor boron treatment of wood composites: production of wood-based composite products. In: Preston AF (ed) IUFRO symposium, Orlando, Florida. Forest Products Society, Madison, WI, USA, pp 49–56

    Google Scholar 

  17. 17.

    Hashim R, Murphy RJ, Dickinson DJ, Dinwoodie JM (1994) The mechanical properties of boards treated with vapor boron. For Prod J 44(10):73–79

    CAS  Google Scholar 

  18. 18.

    Turner P, Murphy RJ (1995) Treatment of timber products with gaseous borate esters. Part 1. Factors influencing the treatment process. Wood Sci Technol 29:385–395

    CAS  Article  Google Scholar 

  19. 19.

    Hashim R, Murphy RJ, Dickinson DJ, Dinwoodie JM (1997) The physical properties of boards treated with vapor boron. For Prod J 47(1):61–66

    CAS  Google Scholar 

  20. 20.

    JIS K 1571 (1998) Qualitative standards and testing methods of wood preservatives

  21. 21.

    JWPA standard 11(1) (1992) Test method for evaluating effectiveness of termiticides for treatments by brushing, spraying and dipping

  22. 22.

    JIS A 1321 (1975) Testing method for incombustibility of internal finish material and procedure of buildings.

  23. 23.

    Harrow KM (1950) Toxicity of water-soluble woo-preservatives to wood-destroying fungi. NZ J Sci Technol B31(5):14–19

    Google Scholar 

  24. 24.

    Baechler RH, Roth HG (1956) Laboratory leaching and decay tests on pine and oak blocks treated with several preservative salts. Proc Am Wood Preservers Assoc 52:24–34

    CAS  Google Scholar 

  25. 25.

    Becker G (1959) Contribution to the knowledge of the efficacy of boron compounds against wood-destroying insects and fungi. Holz Roh Werkstoff 17:484–489

    CAS  Article  Google Scholar 

  26. 26.

    Findlay WPK (1960) Boron compounds for the preservation of timber against fungi and insects. Pest Technol March: 124–126

  27. 27.

    Yalinkilic MK, Yusuf A, Yoshimura T, Takahashi M, Tsunoda K (1996) Effect of vapor formalization of boric acid treated wood on boron teachability and biological resistance. In: Proceedings of the 3rd Pacific Rim bio-based composites symposium, December 1996, Kyoto, pp 544–551

  28. 28.

    Laks PE, Quan X, Palardy RD (1991) The effects of sodium octaborate tetrahydrate and zinc borate on the properties of isocyanate-bonded waferboard. In: Proceedings of the adhesives and bonded wood products symposium, Seattle, November 1991, pp 144–157

  29. 29.

    Laks PE, Manning MJ (1994) Inorganic borates as preservative systems for wood composites. In: Proceedings of the 2nd Pacific Rim bio-based composites symposium, Vancouver, Canada, November 1994, pp 236–244

  30. 30.

    Laks PE, Manning MJ (1995) Preservation of wood composites with zinc borate. International Research Group on Wood Preservation document no. IRG/WP 95–30074

  31. 31.

    Williams LH, Amburgey TL, Parresol BR (1991) Toxic thresholds of three borates and percent wood weight losses for two subterranean termite species when feeding on treated wood. In: Proceedings of the 1st international conference on wood protection with diffusible preservatives, November 11 Nashville, 1990. Forest Products Society proceedings no. 47355, 129–133

  32. 32.

    Su N-Y, Scheffrahn RH (1991) Laboratory evaluation of disodium octaborate tetrahydrate (TIM-BOR®) as a wood preservative or bait-toxicant against the Formosan and eastern subterranean termites (Isoptera: Rhinotermitidae). International Research Group on Wood Preservation document no. IRG/WP/1513

  33. 33.

    Grace JK, Yamamoto RT, Tamashiro MT (1992) Resistance of borate-treated Douglas-fir to the Formosan subterranean termite. For Prod J 42(2):61–65

    CAS  Google Scholar 

  34. 34.

    Mauldin JK, Kard BM (1996) Disodium octaborate tetrahydrate treatments to slash pine for protection against Formosan subterranean termite and eastern subterranean termite (Isoptera: Rhinotermitidae). J. Econ Entomol 89(3):682–688

    CAS  Article  Google Scholar 

  35. 35.

    Tsunoda K (1999) Application of borates to wood preservation. 2. Field evaluation and applicability to the preservative treatment of composites (in Japanese). Mokuzai Hozon (Wood Preservation) 25:251–262

    Article  Google Scholar 

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Correspondence to Kunio Tsunoda.

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Tsunoda, K. Preservative properties of vapor-boron-treated wood and wood-based composites. J Wood Sci 47, 149–153 (2001). https://doi.org/10.1007/BF00780565

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Key words

  • Vapor-boron treatment
  • Trimethyl borate
  • Decay resistance
  • Termite resistance
  • Fire resistance