Wood-Plastic Composites (WPC) is a new type of composite material that has been booming in recent years. It refers to the use of polyethylene, polypropylene and polyvinyl chloride, etc., instead of the usual resin adhesives, and more than 50%. Wood flour, rice husks, straws and other waste plant fibers are mixed into new wood materials, and then through extrusion, molding, injection molding and other plastic processing techniques to produce plates or profiles. Mainly used in building materials, furniture, logistics packaging and other industries. The plastic and wood powder are mixed in a certain proportion and then hot-extruded to form the board, which is called extruded wood-plastic composite board.
The basis of wood-plastic composite material is high-density polyethylene and wood fiber, which determines that it has some characteristics of plastic and wood.
1) Good processing performance
Wood-plastic composite materials contain plastics and fibers. Therefore, they have similar processing properties to wood. They can be sawed, nailed, and planed. They can be completed with woodworking tools, and the nail holding force is significantly better than other synthetic materials. Mechanical properties are better than wood materials. The nail holding force is generally 3 times that of wood and 5 times that of particleboard.
2) Good strength properties
The wood-plastic composite material contains plastic, so it has a good elastic modulus. In addition, because it contains fibers and is fully mixed with plastic, it has physical and mechanical properties such as compression resistance and bending resistance comparable to hardwood, and its durability is significantly better than ordinary wood materials. The surface hardness is high, generally 2-5 times that of wood.
3) It has water resistance, corrosion resistance and long service life
Compared with wood, wood-plastic materials and their products are resistant to strong acid and alkali, water resistance, corrosion resistance, and do not breed bacteria, are not easy to be eaten by insects, and do not grow fungi. Long service life, up to more than 50 years.
4) Excellent adjustable performance
Through additives, plastics can undergo changes such as polymerization, foaming, curing, modification, etc., thereby changing the density, strength and other characteristics of wood-plastic materials, and can also meet special requirements such as anti-aging, anti-static, and flame retardant.
5) It has UV light stability and good colorability.
6) Its biggest advantage is to turn waste into treasure, and it can be 100% recycled. It can be decomposed without causing “white pollution”, and it is a real green environmental protection product.
7) Wide source of raw materials
The plastic raw materials for the production of wood-plastic composites are mainly high-density polyethylene or polypropylene, and the wood fibers can be wood flour, grain bran or wood fibers, and a small amount of additives and other processing aids are required.
8) Can be made into any shape and size as required.