According to the different principles of wood modification technology, antiseptic wood is mainly divided into artificial antiseptic wood treated with antiseptic agent injection, heat-treated wood, impregnated laminated wood and other products. Artificial antiseptic wood is generally slightly green after chemical treatment.
The chemical treatment process is as follows: put the dried wood into the pressure treatment tank; Then vacuum the tank to form a negative pressure state; Inject antiseptic agent; Vacuum pressurization (pressure maintaining) makes the antiseptic penetrate into the wood, thus achieving the effect of deep antisepsis; Depressurize and discharge excess preservative; Vacuum again to remove excess preservative; Anticorrosive wood is made out of the tank and then dried in a second kiln or fully dried naturally.
Antiseptic wood is classified as follows according to tree species:
(1) Pinus sylvestris var. mongolica: Pinus sylvestris var. mongolica can directly use high-pressure infiltration method for full-section anti-corrosion treatment. Its excellent mechanical performance and beautiful texture are deeply loved by designers and engineers. Russian Scotch pine antiseptic material has a wide range of applications, and can be used in projects such as wooden plank roads, pavilion platforms, children's play areas, flower beds, garbage bins and outdoor environments. Because of its unique anti-corrosion technology, all architectural works can be used for a long time.
(2) Red pine: after special antiseptic treatment, red pine has antiseptic, termite and fungal effects. It is specially used in outdoor environment and can be directly used in the environment in contact with water and soil. It is the preferred material for wooden floors, fences, trestles and other wooden articles in outdoor landscape.
(3) Western red cedar: Western red cedar is the highest grade preservative wood in North America. Red cedar has excellent stability, long service life and is not easy to deform. In addition, it is also suitable for high humidity environments, such as saunas, bathrooms and kitchens, and can be used to make cabinets, wardrobes, etc. to prevent cockroaches and moths.
(4) Yellow pine: It has the best strength and specific gravity, and has excellent nail grip. It is the western cork with the highest strength. After corrosion prevention and pressure treatment, the preservative can reach the wood core directly. During installation, it can be cut arbitrarily, and the section does not need to be painted with anti-corrosion paint. The product can be used in seawater or river water, and will never be corroded.
(5) Tsuga: Tsuga is a widely used tree species in the North American market. In terms of strength, it is slightly lower than that of yellow pine, which is more suitable for anti-corrosion treatment. The hemlock wood after pressure corrosion treatment is beautiful and strong, which is comparable to the natural durable red cedar.
(6) Charcoal wood: Charcoal wood is the homogenous carbonization treatment of wood at high temperature to make the wood surface have dark brown aesthetic effect. It is an ideal material for outdoor swimming pool landscape construction due to its corrosion resistance, insect resistance, deformation and cracking resistance, and high temperature resistance.
(7) Eucalyptus saliciformis: generally divided into two types: Eucalyptus saliciformis and Eucalyptus saliciformis. Eucalyptus alba, an evergreen tree, has a tall and straight trunk, thick wood structure, straight or oblique texture, and is easy to dry and process; The wood texture of Eucalyptus salix is also like that of Eucalyptus salix. The cut pattern is beautiful, but it is difficult to dry and process. There are few warping and cracking phenomena in the drying process of Eucalyptus. Willow wood is hard, with brown eyes, long fiber, large elasticity and changeability.