1. Treatment of dry wood.
(1) conventional treatment mainly includes spray, spray, brushing and impregnation. Compared with other methods, the preservative retention and penetration depth of these methods are not very large. It is suitable for use on wood which is easy to penetrate, even if the effect is not very good.
② Hot and cold bath treatment. Under normal pressure, the effect of this method is good, using the pressure difference caused by thermal expansion and cold contraction.
2. Treatment of wet wood.
① Diffusion method. This method is to use the law of molecular diffusion, mainly the use of moisture in the wood. Water borne preservatives will diffuse from high concentration to low concentration, so that preservative components can be transported to wood.
There are several necessary conditions for this method
(1) The moisture content of wood must be high;
(2) The solubility of preservative in water is higher;
(3) The fixation speed of preservative in wood is slow;
(4) The ambient temperature is high.
② Transfusion replacement. This method has a narrow scope of application and is only suitable for logs or standing trees that have just been cut. At the same time, the water solubility of preservatives should be good.
In short, there are a lot of preservative treatment for garden wood, not only using preservatives to deal with, but also through a variety of other methods to deal with. The research on the technology of preservative treatment of landscape wood can provide better support for landscape construction.