Advances In Plastic-Wood Composite Materials For Building Decoration
Wood-plastic composite material is a new type of composite material that replaces traditional building decoration materials.The production of wood-plastic composite materials includes plant fibers (such as peanut shells, wood chips, bamboo chips, etc.), polymer plastics (such as polyethylene, polypropylene, etc.), polymer plastics, and additives.
Natural wood texture and grain
Wood-plastic composite materials usually have the same texture and wood grain as natural wood through processing synthesis and modern technology, which meets people's needs for the aesthetics of traditional wood.The density of wood-plastic composite material is 0.6～1.4g/cm3;However, different processes and materials have different densities;The water absorption performance of WPC is not strong. Even if it absorbs water, its thickness expansion rate is less than 1%. After it is processed, a protective film can be formed on the surface of WPC material, which can play a role in isolating the entry of water molecules. At the same time, WPC has strong wear resistance, and the surface wear resistance index does not exceed 0.08; it has strong corrosion resistance, which makes the service life of WPC composite materials longer than traditional building decoration materials.
Wood-plastic composites are highly flexible
The static bending strength of wood-plastic composites is usually not less than 20MPa, and the flexural modulus of elasticity is not less than 1800MPa; wood-plastic composites have higher nail-holding power than traditional wood. The material has excellent processing properties, such as adhesiveness, sawability, planing ability, etc.; the installation of plastic wood is time-saving and labor-saving, and the operation is simple and convenient.Wood-plastic composite materials are highly adjustable. Additives can be added to the production process to allow plastic-wood to undergo changes such as polymerization, curing, and foaming.Make its strength and density change greatly, so it can meet the requirements of flame retardancy, anti-aging and anti-static.The diversification of raw materials of wood-plastic composite materials can reuse waste wood and plastic, and make wood-plastic after processing. The material is composed of polymer plastics and raw plant fibers, which can be extracted from recycled waste plastics, sawdust, wood scraps, etc. The price of raw materials is much cheaper than traditional wood.
Wood-plastic composite materials in the process of production and processing
No toxic and harmful gases such as ammonia, formaldehyde and benzene that are harmful to human health are added, so plastic wood is a pollution-free, pollution-free and green material. At the same time, wood-plastic composite materials are highly decomposable, can be recycled for production, and can be recycled. The use of plastic wood can be based on the design of cross-sectional shape, product specification and size based on customer needs, based on the color that users like, adding colorants to it to achieve ideal decorative effects.
Application of Plastic-Wood Composite Materials in Building Decoration Engineering
Wood-plastic composite material decorative wallboard is a kind of plastic-wood composite board required for wall decoration. If it is used in the interior wall decoration project of civil buildings, it will be used as a kind of outdoor decorative wallboard. There are four commonly used types of wood-plastic composite materials in prefabricated buildings. The external decoration material of the wall shall be plastic wood.The more common ones are hollow exterior wall decorative panels, external hanging panels, and hollow exterior wall decorative panels;Because it is a kind of exterior decoration material, it is necessary to ensure the safety of building materials. Plastic wood is a kind of outdoor decoration board wall.And it can be used in decoration projects on the exterior walls of low-rise or multi-storey civil buildings with earthquake resistance and crack resistance lower than 8 degrees;Plastic wood is a kind of wall interior decoration material. The main type is lightweight foam decorative board; based on the requirements of GB50222-2017 "Code for Fire Protection Design of Building Interior Decoration" to ensure that the combustion performance level of interior decoration materials is consistent with the "Classification of Combustion Performance of Building Materials and Products";Plastic wood is a kind of insulation material filled inside plastic wood profiles. Add inorganic raw materials to talcum powder and calcium carbonate materials, form raw materials with other resins or polyvinyl chloride resins, add an appropriate amount of additives, and extrude the board after high temperature extrusion or mixing;The plastic-wood composite material is used as a light steel keel combined wall material layer. There are plastic-wood board products applied to the light steel keel composite wall, which can be used in conjunction with a part of the composite wall and non-combustible materials to promote the continuous improvement of the fire resistance limit and combustion performance level of the wall.
