Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
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Decay Resistance and Anti-mold Efficacy of Wood Treated with Fire Retardants

난연처리 목재의 방미 및 방부성능

  • Son, Dong Won (Dept. of Forest Products, Korea Forest Research Institute) ;
  • Kang, Mee Ran (Dept. of Forest Products, Korea Forest Research Institute) ;
  • Lee, Dong-Heub (Dept. of Forest Products, Korea Forest Research Institute) ;
  • Park, Sang-Bum (Dept. of Forest Products, Korea Forest Research Institute)
  • 손동원 (국립산림과학원 임산공학부) ;
  • 강미란 (국립산림과학원 임산공학부) ;
  • 이동흡 (국립산림과학원 임산공학부) ;
  • 박상범 (국립산림과학원 임산공학부)
  • Received : 2013.08.12
  • Accepted : 2013.11.19
  • Published : 2013.11.25
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Abstract

This study evaluated the ability of white and brown rot fungi to decompose fire retardant-treated wood by measuring mass loss. Anti efficacy of FRT against sapstain and mold fungi was evaluated. Wood was treated with liquid sodium silicate and boric acid, ammonium borate, di-ammonium phosphate. Retardant treated wood was then subjected to fungal decay resistance tests performed according to KS standard method using a brown-rot fungus, Fomitopsis palustris and white rot fungus Trametes versicolor. Aspergillus niger, Penicillium funiculosum, Rhizopus nigricans, Aureobasidium pullulans, Tricoderma virede fungi were used anti-sapstain and mold test. Boron and phosphorus chemicals used in this study increased the resistance of fire retardant treated wood against both fungal attack. Anti mold and sapstain efficacy of the fire retardant treated wood was excellent but there were difference depend on mold. After the liquid sodium silicate treatment, the second chemical treatment process could lead chemical fixation into wood, which effects decay resistance.

목재사용량의 증가에 따라 목재의 화재안전성에 대한 요구가 높아지고 있다. 실내 사용 목재의 난연처리에 무기인계를 약제로 사용함으로써 환경에 대한 부담을 줄이면서 난연성능을 향상 시킬 수 있다. 수용성 약제를 가압 주입하여 목재 내 깊숙이 침투시키면 목재의 고유기능을 유지하면서 난연성능을 부여 할 수 있다. 난연제의 용탈을 억제하여 장기간 성능을 유지할 수 있는 장점도 있다. 저자들은 액상규산나트륨을 주약제로 하고, 붕산 및 인계 약제를 보조약제로 하여 목재 내로 약액을 주입하는 공정을 개발하였다. 이들 약제는 난연성능 외에 방부 및 방충성능을 지니는 약제가 포함되어 있어, 난연성능과 함께 목재 사용 시 노출될 수 있는 부후환경에서의 내후성능을 방미효력과 방부효력으로 평가하였다.

Keywords

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