High temperature water heat processing method for timber

Abstract

The invention discloses a method for treating wood at high temperature and with hot water, comprising following steps: (1) putting wood in high temperature furnace; increasing temperature at furnace to 120-150 Deg. C and keeping temperature; (2) increasing temperature to 180-240 Deg .C when the water content of wood reduced to lower than 5%; keeping temperature and the time is 0.5-3 hours according to wood thickness per cm; (3) reducing temperature at furnace, treating wood with steam or hot water when temperature is reduced below 100 Deg. C to reduce wood water content to 7-10%; (4) reducing temperature continuously and getting wood out of furnace when the temperature inside wood is reduced to about 40 Deg. C; (5) balancing at atmosphere for more than 15 days. The invention can increase size stability, rotproofness and weather ability of wood, and the wood can be applied in environment with large change in humidity and temperature.

Description

technical field [0001] The invention relates to a high-temperature hydrothermal treatment process for wood, which is suitable for high-temperature hydrothermal treatment of wood, so as to improve the dimensional stability, weather resistance and corrosion resistance of wood. Background technique [0002] For a long time, whether it is compared in terms of volume or quality, wood has always ranked first among the four major building materials. It has a series of advantages such as renewable, easy processing, and natural beautiful patterns, and is widely used in construction, furniture manufacturing, and interior decoration. But at the same time, as a natural green and environmentally friendly material, wood also has some natural defects, such as wood has anisotropy and poor weather resistance. Therefore, when the wood is used for a long time in an environment with large changes in humidity and temperature, due to the anisotropy of shrinkage, it is easy to cause various defec...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome defects such as deformation, cracking, decay, and discoloration that are prone to occur in the use of wood, and to provide a method that can improve the dimensional stability, corrosion resistance and weather resistance of wood, so that after treatment The wood can be widely used in the high-temperature hydrothermal treatment method of wood in an environment with relatively large changes in humidity and temperature