耐火三層パーティクルボードの耐火性能およびその物理的・機械的性質
1985 年 34 巻 383 号 p. 966-971
詳細
1985 年 34 巻 383 号 p. 966-971
Three layered fire-resistant particleboards were manufactured with adhesives containing fire-retardant chemicals. Fire endurance, physical and mechanical properties of the boards were determined and discussed. The fire-retardant chemicals used were H3BO3, KOH, LiOH·H2O, Na2B8O13·4H2O, NaOH, and NaBr and the adhesive was a commercial urea-melamine-formaldehyde resin. The fire-retardant adhesive containing H3BO3 was stabilized by the addition of alkali metal compounds. The fire-retardant adhesives imparted excellent fire resistant to the three layered particleboard. All of the 22mm thick three layered particleboards and the full scale one glued with the fire-retardant adhesives successfully met the acceptance fire penetration criteria under the standard fire test for 30 minutes rating of class B wall of INTERNATIONAL CONFERENCE ON SAFTEY OF LIFE AT SEA 1960. Excepting a few fire-resistant particleboards, the basic engineering properties of the 22mm thick three layered fire-resistant particleboards were better than or equivalant to those of the commercial fire-resistant particleboards and the untreated commercial ones.
