FLAME-RETARDANT WOOD CONTAINING FLAME RETARDANT IN HIGH CONCENTRATION AND PRODUCTION METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To solve the problem that, although a flame retardancy treatment is essential for high-degree application of woody materials, e.g. wood used as a construction material, impregnation of a flame retardant in wood in a high concentration requires heating and pressure reduction, tending to cause low efficiency, including necessity of a long time, and high costs.;SOLUTION: A production method of flame-retardant wood containing a flame retardant in a high concentration comprises cutting the partition of tracheid, an obstruction factor for permeation of a flame retardant, by forming notches in the direction orthogonal to the longitudinal direction of wood and impregnating the wood with a flame retardant solution by flame retardant solution impregnation means so as to produce flame-retardant wood containing the flame retardant in a concentration as high as 50% or more of the weight of wood, with high efficiency at low costs. The strength of the wood can be enhanced to such an extend as for the wood to be usable as a structural material for wooden buildings by sticking a wood plate or a sheet-like material to the wood or embedding an adhesive resin in the notched part after the treatment of impregnation of the flame retardant.;COPYRIGHT: (C)2016,JPO&INPIT