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Supercritical fluid application to high performance treatment of wood and composite materials

Research Project

Project/Area Number 09660184
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 林産学
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

TSUNODA Kunio  Wood Res.Inst.KYOTO UNIVERSITY Associate professor, 木質科学研究所, 助教授 (30127104)

Co-Investigator(Kenkyū-buntansha) INOUE Masafumi  Wood Res.Inst.KYOTO UNIVERSITY Instructor, 木質科学研究所, 助手 (20263155)
YOSHIMURA Tsuyoshi  Wood Res.Inst.KYOTO UNIVERSITY Instructor, 木質科学研究所, 助手 (40230809)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1998: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1997: ¥1,000,000 (Direct Cost: ¥1,000,000)
Keywordssupercritical fluid / high performance treatment / enhanced resistance to decay fungi and termites / 二酸化炭素 / 防腐薬剤 / 保存処理
Research Abstract

Supercritical fluids have intermediate properties between liquid and gas, and can be a suitable carrier of preservative ingredients into wood and/or composite materia without any mechanical damage. The current investigations were related to examine treatability of Japanese softwood species (Sugi, Akamatsu and Karamatsu) with supercritical carbon dioxide, effects of the treatment on the mechanical properties and decay resistance of the treated materials. Following results were obtained so far.
(1) Results varied with wood species. A permeable wood species, Sugi sapwood did not sustain any serious mechanical damage, while a refractory wood species, Karamatsu heartwood lost its bending' strength to some extent.
(2) These findings suggested that treatment conditions should be carefully chosen to reduce pressure gradients across the transverse direction.
(3) Any composite material did not sustain any mechanical damage through super-critical fluid treatment.
(4) Incorporation of a fungicide in supercritical carbon dioxide definitely enhanced decay resistance of the treated materials in comparison with the untreated materials
In conclusion, supercritical fluid was proved applicable to preservative treatment of wood and composites, although much further investigation is needed to establish its treatment technology.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (7 results)

All Other

All Publications (7 results)

  • [Publications] K.Tsunoda: "Supercritical fluid application to wood preservarim (1)Principle of 〓eatinent and mechanical preperties of tiletel wood" Proc 4th Pacefic Rim Bis-Based Conposifo Sim.333-339 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Tsunoda: "Supercritical fluid application to wood preservarim (2)Laboratory evaluation of decay resistance of treated wood" Proc 4th Pacefic Rim Bis-Based Conposifo Sim.340-344 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Tsunoda, M.Inoue, T.Yoshimura and A.Adachi: "Supercritical fluid application to wood preservation (1) Principle of treatment and mechanical properties of treated wood" Proc.4th Pacific Rim Bio-Based Composites Sym.333-339 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Tsunoda, T.Yoshimura, M.Inoue and A.Adachi: "Supercritical fluid application to wood preservation (2) Laboratory evaluation of decay resistance of treated wood" Proc.4th Pacific Rim Bio-Based Composites Sym.340-344 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Tsunoda: "Suprecufical fluid application to wood preservation.(1)Principle of treatment and mechanical piopathe of treated wood" Pro.4th Pacific Rim Bis-Based Composites Symp.Bogor,Indonesia,Nov 2-Si 1998. 333-339 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Tsunoda: "同上 (2)Latoratory evaluation of decay resis fance of treate wood" 同上. 340-344 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] D.Hernawan: "New technology for manufactirig high-strength wood cement composites by using supercufical fluid of carbon deoxide" Proc 2nd Int.wood Sci.Seminar,Serpong Indonesia,Nov 6-7,1998. B29 (1998)

    • Related Report
      1998 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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