With the exhaustion of the global resources of social environmental protection consciousness constantly rising, wood plastic composite material to be put into use, the wood plastic material can give full play to his strengths, wood plastic composite affordable, one of the reasons for the superior quality is also very popular.

The wood-plastic composite material is a kind of modified thermoplastic material which is made of wood fibre or plant fibre, which is filled and strengthened, and made by different processing methods such as hot-pressing composite and melting extrusion.

With the increasing depletion of global resources and the increasing awareness of environmental protection, more and more requirements have been put forward for the application of wood and petrochemical products. In this context, the wood plastic composites can play advantage of the material of each component, overcome because of timber intensity is low, a large variability, and organic material use limitations caused by the low modulus of elasticity and can make full use of scrap wood and plastic, reducing environmental pollution.

At present, the products that increase the added value of materials are getting more and more attention. Research focus now mainly concentrated in the polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS) and other thermoplastic plastic and wood powder, plant straw powder, wood powder materials such as plants shell as raw material, after extrusion, injection molding, pressing forming made of composite materials. From the point of view of production materials, the raw materials of wood-plastic composite materials can use various kinds of waste plastics, waste wood and agricultural residues. Therefore, the development and wide application of wood-plastic composite materials can help reduce the pollution of plastic waste and reduce the environmental pollution caused by agricultural waste incineration.

The production and use of wood plastic composite material, can’t send out into the surrounding environment harm the human health of volatiles, can also be recycled material itself, is a new kind of green environmental protection product, is also a kind of ecological clean composite materials. Therefore, the research on the preparation and processing of wood-plastic composite materials has great economic and environmental benefits.