With the continuous improvement of outdoor garden life requirements, the types of outdoor wood also increase. From anti-corrosion treatment of wood, to synthetic materials of wood and plastic, as well as bamboo and wood materials made of bamboo fiber and high pressure, which were fledgling at the 2010 World Expo, all have become good choices for creating the natural beauty of outdoor life due to their different characteristics.
1. Widely used preservative wood
Facing the harsh external environment, ordinary wood cannot resist the erosion of mold, rain, etc., and is extremely easy to rot. However, preservative wood after poisoning the wood with preservatives can prevent wood decay fungus from decaying the functional wood. It is in a vacuum state, through high pressure, the antiseptic agent is immersed in the wood tissue cells, and it is closely mixed with the cell fiber tissue, and the agent will not be released. At present, the main preservatives are CCA/ACQ, the main component of CCA is copper arsenic, and the main component of ACQ is ammonia-soluble alkylamine copper. Because it maintains the same characteristics, color and texture as ordinary wood, it is widely used in outdoor gardening environments.
advantage
In fact, in addition to anti-corrosion properties, anti-corrosion wood also has three basic functions of termite resistance, fungus resistance and corrosion resistance. Anti-corrosion wood also has the characteristics of good permeability and strong loss resistance. At the same time, it can also inhibit the change of the moisture content of the treated wood and reduce the degree of wood cracking.
shortcoming
Due to the impregnation of chemicals during the pressurization process, the wood will have a slightly greenish chemical color, uneven color, large color difference and dullness. With the loss of chemicals, it is easy to turn gray and black. Moreover, secondary drying is generally not adopted, and the moisture content of the wood itself is high, so it is prone to deformation and cracking.
Scope of application
Anti-corrosion wood is used for outdoor and courtyard ground platforms, guardrails, pavilions, pergola, tables and chairs, sketches, etc.
2. Natural and simple carbonized wood (deep carbonization)
Carbonized wood, also known as charcoal-burned wood, uses high temperature to homogeneously carbonize the effective nutrients of wood without any chemical agents, and achieves the purpose of antisepsis by cutting off the nutritional chain for the survival of decaying bacteria.
The wood surface has a dark brown aesthetic effect, and has anti-corrosion and anti-biological attack effects. It has low moisture content, is not easy to absorb water, stable material, no deformation, completely degreased and non-greasey, good heat insulation performance, simple construction, and no special smell , is an ideal sauna material, and its anti-rot, anti-moth, anti-deformation and cracking, high temperature performance has also become an ideal material for outdoor swimming pool landscape. Is a real green building materials, environmental protection building materials.
advantage
Surface carbonization, anti-corrosion and anti-microbial attack ability, its surface carbonization layer can be compared to wood paint, and highlights the uneven wood grain on the surface. The deep carbonized anti-corrosion wood has the same color inside and outside, with soft and silky luster, clearer texture and warm hand feeling. And the processing performance is good, which overcomes the disadvantages of fluffing on the product surface. It is not easy to absorb water, has a low moisture content, and is a wood that does not crack. Moisture-resistant, not easy to deform, is an excellent moisture-proof wood.
shortcoming
Carbonized wood is not suitable for use in environments where it is in contact with soil and water. Compared with untreated materials, the nail holding power is reduced. Therefore, it is recommended to drill holes first and then nail the holes for installation to reduce and avoid wood cracking. At the same time, it is recommended to use anti-ultraviolet wood oil when using it outdoors to prevent the wood from fading after a long time.
Scope of application
Railings, pavilions, pergolas, tables and chairs, etc.