With people’s pursuit of outdoor leisure life quality, outdoor wood products, outdoor furniture, and wood construction sketches are becoming more and more abundant. Outdoor furniture is an important element in coordinating people and the city, people and the natural environment in outdoor public spaces. It can improve the quality of outdoor activities and provide people with a place to relax.
The outdoor environment is constantly changing, which makes outdoor furniture exposed to the outdoors for a long time to face rain, sunlight, insect 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. , which prompted experts to carry out a large number of new outdoor wood research, mainly including composite wood-plastic wood, chemically treated wood, carbonized wood treated with high temperature, etc. These new types of wood for outdoor furniture can effectively extend its life and make it more suitable for outdoor space environments.
Requirements for wood for outdoor furniture
In order to make outdoor furniture better adapt to the outdoor environment and allow people to have leisure and comfortable activities 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 must have good durability in the outdoor environment, resist the erosion of rainwater and sunlight exposure, and prevent the furniture from cracking and deformation under the long-term erosion of outdoor harsh environments. This is the most basic and critical requirement for outdoor furniture, and good quality can only be achieved on the premise of ensuring its durability.
2. Stable reinforcement method
Since outdoor furniture is generally placed in public spaces for entertainment and relaxation, it is not furniture that often needs to be moved, so the fixed structure of the furniture needs special consideration, it is necessary to prevent the furniture from tilting or collapsing, and it is necessary to ensure that the connecting parts are exposed to sunlight and heat. It will not be easily damaged after the rain.
3. Regular maintenance and repair
Outdoor furniture also needs to be maintained and repaired on a regular basis. In addition to cleaning up dust, attention should be paid to avoiding sunlight exposure in summer and rainwater erosion during the rainy season. If not in use for a long time, it is best to cover the furniture with a protective cover.
outdoor furniture wood
Solid wood outdoor furniture is usually made of wood that is not easy to crack, deform, discolor and moth-eat in an outdoor environment. Such as teak, ash, etc. These woods are tough, rough in structure and easy to process.
But solid wood resources are limited after all. In order to make outdoor furniture wood have good performance and alleviate the contradiction between supply and demand of wood resources, researchers have developed outdoor wood products.
1. Preservative wood
Preservative wood is the addition of chemical preservatives to ordinary wood, so as to achieve the effects of anti-corrosion, moisture-proof, fungus-proof, waterproof and insect-proof. There are generally two treatment methods for preservative wood, namely, high-pressure dipping tank treatment and non-pressure dipping tank treatment. Among them, the high-pressure impregnation method is the most commonly used method. This method is to add preservatives to the wood after drying, curing and polishing, and react under vacuum conditions, so that the preservatives can enter the wood cells and be permanently fixed to achieve the effect of anti-corrosion and insect control. .
The preservatives are mainly CCA with the chemical composition of chromated copper arsenate. The chemical properties of CCA are very stable, but because the trace amount of arsenic may cause harm to the human body, most developed countries have banned the use of this preservative. Another kind of preservative is ACQ whose chemical composition is mainly alkyl cuproammonium compounds. Its active substance is ammonium, which can be degraded and has relatively little pollution to the environment.
2. Carbonized wood
Carbonized wood is wood obtained after heat treatment at 160℃~250℃ in media such as inert gas, water vapor or oil. This 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 performance of antiseptic and antibacterial. Compared with the chemically modified preservative 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 materials are 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 materials through a series of processes. This material has high hardness, high strength, degradability, excellent waterproof and moisture-proof performance, and can also 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. , truly green and environmentally friendly outdoor furniture materials.
Post time: Aug-18-2022