| 摘要 |
The present invention relates to a method for flame-retardant and waterproof treatment of timber, capable of achieving excellent workability and high efficiency in flame retardance and water resistance, by permeating mixed liquid of flame-retardant waterproof agents, containing both waterproof chemicals and phosphorous flame-retardant liquid, into timber at high pressure. The method for flame-retardant and waterproof treatment of timber includes: a step for conducting a vacuum exhaustion of timber, wherein the timber is inserted into a vacuum chamber in order to eliminate moisture and foreign substances from the inside of the timber; a step for fully charging flame-retardant waterproof liquid to the vacuum chamber and pressurizing the flame-retardant waterproof liquid at pressures of 8-25 kgf/cm^2 for a predetermined time, thereby immersing the flame-retardant waterproof liquid; a step for dehydrating the flame-retardant waterproof liquid, by exhausting and vacuuming the timber immersed with the flame-retardant waterproof liquid; a step for naturally drying the timber, wherein the flame-retardant waterproof liquid is dehydrated, for predetermined time in the shade; and a step for completely drying the naturally dried timber at temperatures of 50-80°C for 2-4 days after inserting the timber into a drying machine. The flame-retardant waterproof liquid includes inorganic phosphorous flame retardant liquid having the viscosity of 0-5 and waterproof liquid, combined at a ratio of 5-15:1 by weight; and any one from 2-5% by weight of ethyl or ethylene. The inorganic phosphorous flame retardant liquid can be any one among triethyl phosphate, ammonium phosphate, and ammonium polyphosphate, while the waterproof liquid can be either one from a non-acetic silicone sealant or a moisture-cure silicone adhesive, thus achieving both flame retardance and water resistance. |
