With people's pursuit of the quality of outdoor leisure life, outdoor wood products, outdoor furniture, forestry and architectural sketches are becoming more and more abundant. Outdoor furniture is an important element that coordinates people and the city, and people and the natural environment in the outdoor public space. It can improve the quality of outdoor activities and provide people with a place to relax.
The outdoor environment changes frequently, which makes outdoor furniture exposed to the outside for a long time to face rain, sunlight, pests and other attacks. Ordinary wood cannot resist these long-term natural erosion. In order to improve the quality and durability of outdoor furniture, it is more suitable for the outdoor environment. This has prompted experts to carry out a large number of new outdoor wood research, mainly including composite wood-plastic wood, anti-corrosion wood treated with chemical agents, and carbonized wood treated with high temperature. These new outdoor furniture woods can effectively extend its service life and make it more suitable for outdoor space environments.
Outdoor furniture wood requirements
In order to allow outdoor furniture to better adapt to the outdoor environment and allow people to relax and relax in the outdoor environment, usually outdoor furniture wood has the following requirements:
1. Long service life and high durability
Compared with indoor furniture, the most prominent feature of outdoor furniture is that it has good durability in the outdoor environment, resists the erosion of rain and sunlight, and prevents the furniture from cracking and deformation under long-term erosion in the harsh outdoor environment. This is the most basic and critical requirement for outdoor furniture, and good quality can only be achieved under the premise of ensuring its durability.
2. Stable reinforcement method
Because outdoor furniture is generally placed in public spaces for people to entertain and relax, it is not furniture that often needs to be moved. Therefore, the fixed structure of the furniture requires special consideration. It is necessary to prevent the furniture from tilting or collapsing, and to ensure that the connectors are exposed to sunlight and It will not be easily destroyed after rain.
3. Regular maintenance and repair
Outdoor furniture also needs to be maintained and repaired regularly. In addition to cleaning up the dust, it is necessary to avoid sun exposure in summer, and to avoid rain erosion during the rainy season. If it is not used for a long time, it is best to cover the furniture with a protective cover.
Outdoor furniture wood
Outdoor furniture made of solid wood is usually made of wood that is not easy to crack, deform, discolor and moth-eaten in the outdoor environment. Such as teak, Fraxinus mandshurica, etc., these woods are tough, rough in structure and easy to process.
But solid wood resources are limited after all. In order to allow outdoor furniture wood to have good performance and to alleviate the contradiction between supply and demand of wood resources, researchers have developed outdoor wood products.
1. Anticorrosive wood
Anticorrosive wood is the addition of chemical preservatives to ordinary wood to achieve the effects of anticorrosion, moisture proof, fungus proof, waterproof, and insect proof. There are generally two treatment methods for anticorrosive wood, namely high-pressure immersion tank treatment and non-pressure immersion tank treatment. Among them, the high-pressure dipping method is the most commonly used. This method is to add preservatives to the wood after drying, curing, and polishing, and react under vacuum conditions to allow the preservatives to enter the wood cells and be permanently fixed to achieve the anti-corrosion and insect-proof effect .
The preservatives are mainly based on CCA whose chemical composition is chromated copper arsenate. The chemical properties of CCA are very stable. However, because the trace arsenic element may cause harm to the human body, most developed countries have now banned the use of this preservative. Another kind of preservative is ACQ whose chemical composition is mainly alkyl copper ammonium compound. Its active substance is ammonium, which can be degraded, and relatively speaking, it has little pollution to the environment.
2. Carbonized wood
Carbonized wood is wood obtained after heat treatment at 160℃~250℃ in inert gas, water vapor or oil. This kind of high-temperature treated wood can form a stable intertwined structure, which greatly improves the stability, and the volatilization of the extract reduces the food of decaying fungi and improves the anti-corrosion and anti-bacterial performance. Compared with the chemically modified anticorrosive wood mentioned above, this modification method does not use chemicals and is a more environmentally friendly modification method.
3. Wood-plastic composite materials
Wood-plastic composite material is made of wood fiber or plant fiber as the main material, mixed with polyethylene, polypropylene, polyvinyl chloride and other polymer compounds, adding coupling agents and additives, and compounding through a series of processes. This material has high hardness, strong strength, degradability, excellent waterproof and moisture-proof performance, and can effectively prevent mildew and insects. It is an excellent outdoor furniture material.
my country’s outdoor furniture wood has been widely used and can meet the basic requirements of waterproof, sunscreen, and insect-proof, but it needs to be strengthened in terms of environmental protection. On the basis of saving wood resources, chemical modification should reduce the use of chemicals that will pollute the environment. , A truly green outdoor furniture material.
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