Overcoming the inherent defects of wood-plastic composites and improving material properties, but the foam structure of foam materials currently prepared is not ideal. New foaming processes such as supercritical fluid injection moulding will be the focus of future research.

Improving the interfacial compatibility of plastic-wood composites For plastic-wood composites, interfacial compatibility is an important factor that restricts the application of materials. However, in foamed wood-based composites, the presence of cells weakens between plastics and fibres. Connection. Although the coupling agents currently used have a certain effect on improving the interfacial compatibility, there is still room for improvement in this respect.

Development of functional materials

In order to expand the application range of foamed wood-plastic composite materials, the development of materials with sound insulation, anti-corrosion, anti-ageing, anti-creep and other functions is the next step in research and development.

Increase fibre content

As a renewable resource, biomass fibre is more energy-saving and less expensive than plastic. Increasing fibre content in foamed wood-based composites can not only reduce costs but also accelerate the degradation rate of materials. However, increasing the amount of fibre must make foaming more difficult and some properties of the material will be reduced. Therefore, the increase in fibre content will be the direction of future research.