Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
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Fire Performance of the Wood Treated with Inorganic Fire Retardants

  • Son, Dong-Won (Division of Wood Processing, Department of Forest Products, Korea Forest Research Institute) ;
  • Kang, Mee-Ran (Division of Wood Processing, Department of Forest Products, Korea Forest Research Institute) ;
  • Kim, Jong-In (Division of Wood Processing, Department of Forest Products, Korea Forest Research Institute) ;
  • Park, Sang-Bum (Division of Wood Processing, Department of Forest Products, Korea Forest Research Institute)
  • Received : 2012.07.24
  • Accepted : 2012.09.18
  • Published : 2012.09.25
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Abstract

To prepare the eco-friendly fire retardant wood, Japanese red pine (Pinus densiflora), Hemlock (Tsuga heterophylla), and Radiata pine (Pinus radiata) were treated with inorganic chemicals, such as sodium silicate, boric acid, ammonium phosphate, and ammonium borate. Different combination and concentration of those chemicals were impregnated by vacuum/pressure treatment methods. The electron-beam treatment was used to increase the chemical penetration into the wood. The fire performance of the fire retardant treated wood was investigated. The penetration of chemicals into the wood was enhanced after electron beam treatment. Ignition time of the treated wood was the most effectively retarded by sodium silicate, ammonium phosphate, and ammonium borate. The most effective chemical combination was found at 50% sodium silicate and 3% ammonium borate, which satisfied flammability criteria for a fire retardant material in the KS F ISO 5660-1 standards.

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References

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