The plastic-wood composite material is a modified thermoplastic material, which is made of wood fiber or plant fiber filled, reinforced, hot-pressed composite material, melt extrusion and other processing methods.
Global resources continue to shrink, placing higher demands on the application of wood and petrochemical products. In this case, the plastic-wood composite material can not only exert the advantages of the material itself, but also overcome the limitations due to the low strength, variability and low elastic modulus of the ordinary wood, and can fully utilize the waste wood and Plastics reduce the pressure on the environment.
At present, more and more products that increase the added value of materials are being paid attention to. Research hotspots today are mainly focused on thermoplastics and wood powder, such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS) and wood powder, plant straw powder, plant seed shells, etc. As a raw material, composite materials of extrusion, injection and compression molding. From the perspective of producing raw materials, the raw materials of plastic-wood composite materials can be used for various waste plastics, waste wood and crop residues. Therefore, the development and wide application of plastic-wood composite materials help to reduce the pollution of plastic waste, and also help reduce the environmental pressure caused by agricultural waste incineration.
The production and use of plastic-wood composite materials will not affect the surrounding environment and will not emit volatile substances harmful to human health. The material itself can also be recycled, and it is also a brand-new green environmental protection product and ecological clean environmental protection material. Therefore, the research on the preparation and processing of plastic-wood composite materials has huge economic and environmental benefits.