WPC materials, as a new type of composite material with low carbon, green, environmentally friendly, and sustainable development, are receiving great attention. Their application in various fields has become very extensive. In the future, WPC material technology will combine with modern high technologies such as nanotechnology and biotechnology, leveraging the development of the internet era, developing towards multifunctionality (i.e., flame retardant, antibacterial, sound-absorbing), lightweight, environmentally friendly intelligence, and customizability. WPC materials are bound to become a material with significant application prospects, greatly promoting the upgrade of the green environmental protection industry.
WPC materials have advantages of beautiful appearance, strong performance, fast installation, and affordable price. Therefore, developing new products, new technologies, and new assemblies for wood plastics is the direction. "Beautiful, durable, and maintenance-free" as the biggest selling point and hotspot of WPC materials needs to be maintained continuously. Among them, the durability of WPC material products is the development focus (non-fading, scratch resistance, stain resistance, flame retardance, mildew resistance, and increasing material rigidity). Currently, China's innovative research on WPC materials mainly focuses on designing functions such as flame retardant, aging resistance, silent, wear-resistant, lightweight, waterproof, antistatic, and movable, as well as surface decoration like surface embossing, double-sided texture, painting layers, and surface covering real wood layers.
The technical innovation of multi-color and embossed styles on the surface of co-extrusion wood plastics is the key point. Single-layer, multi-layer, and single-line, multi-line co-extrusion technology are the innovation basis. The colors and textures of co-extrusion wood plastic are more realistic and lasting than the first generation of wood plastics, with rich and distinct changes, bringing users high practical value, aesthetic value, and enjoyment. It is an excellent environmentally friendly material used in parks, greenways, seaside resorts, waterfront pavements, decks, home outdoor facilities, and other purposes. In recent years, ASA-PVC co-extrusion wood plastic products, as a new material that can save wood, have gradually developed into an emerging industry after more than a decade of independent development of WPC materials. Chinese enterprises accelerate the application development of WPC materials in indoor decoration, furniture, and other fields and have achieved good results.
PVC is a major feature of the Chinese market, and its market potential and scale are far greater than those of polyolefin wood plastic products. Foaming and co-extrusion PVC wood plastic products and their production technology and application development, different from the characteristics of polyolefin wood plastic products (flame retardant, lightweight, high strength, beautiful) are worth noting. Indoor green home decoration PVC wood plastic products emerge suddenly, leading the trend; providing technical and product support for wood plastic enterprises to step into large-scale production of ten thousand tons, break through indoor and outdoor wood plastic product lines, and realize integrated housing of wood plastic. The mechanical properties of PVC wood plastic foamed materials greatly exceed those of wood, while they significantly reduce the number of resins used, saving costs, decreasing material density, and improving sound insulation and heat insulation effects. In addition, the foaming process also gives the product more precise appearance dimensions and excellent surface texture, making it easier to install and becoming a development trend in fields such as building materials, interior decoration, wood-like flooring, external wall insulation, interior partitions, building templates, and logistics packaging.
Structural WPC materials and their product development, such as SMA wood plastic, ABS wood plastic, PMMA wood plastic, PA wood plastic, PET wood plastic, and other engineering plastic wood plastic technologies, as well as the development of wood plastic and metal or structural materials co-extrusion or composite technology, are characteristics of the third generation of wood plastic products. China's successful developments include diamond wood, steel core wood, and their potential application fields include automobiles, doors and windows, furniture, net boxes, and integrated housing.
3D print wood plastic materials and nano plant fiber and its composite material development are hotspots. In recent years, WPC materials prepared with flax and PLA as raw materials using the gap polymerization method have an energy storage modulus reaching 0.77GPa. Besides, due to its excellent properties, PLA is also one of the most commonly used materials in 3D printing. 3D printing technology, also known as additive manufacturing, integrates many cutting-edge technologies such as digital modeling technology, electromechanical control technology, information technology, materials science, and chemistry. It is reputed as the core technology of the "third industrial revolution". 3D printing technology can not only achieve structural optimization and material savings in production but also the design and manufacturing of complex parts and molds. Therefore, 3D printing technology is receiving more and more attention internationally, with broad development prospects.
As people's demand for functional wood plastics increases, researchers often refer to other standards to test WPC materials to ensure the preparation of superior quality functional WPC materials. Let us look forward to how WPC materials will continue to expand the possibilities of our lives in the future.