In recent years, with the development of technology, the second generation of the wood plastic composite co-extrusion deck, came into being. It is produced by the most advanced extrusion moulding technology in the industry, and the wood-plastic surface is evenly and firmly covered with co-extrusion layer. Use this kind of new technology to produce co-extrusion deck, besides the mildew that retains traditional wood model, prevent insect and another physical property advantage, still have stronger wear-resisting, fight to scratch, fight fouling and weather resistance ability, more beautiful and durable. Suitable for high – grade outdoor landscape projects. What be worth noting is, the biggest difference that presses a floor to look from the exterior is in, it is more than average product a wood plastic to protect layer, because of the existence of protective layer, improve product service life greatly thereby.

Exploration and Research of Wood Plastic Composite Materials

Here to introduce a high-performance high-strength three-layer co-extrusion deck profile of the new technology

Common co-extruded wood plastic composite materials are usually composed of the surface layer and the core layer. The core layer is generally made of ordinary wood-plastic material, which provides mechanical properties for wood-plastic; The surface is usually made of expensive plastics, which provide high strength and weather resistance. As a result of the processing method and the polarity of the base resin raw material of table, the core layer is different, the binding force of table – core layer is the focus of the common co-extrusion deck. In order to improve the surface core bonding force, often choose the same or better compatibility resin as the base fat, at the same time in the surface, core layer to add high polarity thermoplastic resin to increase the surface, core bonding force, such as an anionic polymer, maleic anhydride graft polyethene, etc. This method not only limited the selection of table, core layer base resin, but also because the adhesive resin directly into the surface layer of granulation extruding will make it evenly dispersed, and the interface layer of adhesive resin is less, if a large amount of adhesive resin, although can increase the thickness of the adhesive resin layer, but will lead to a significant increase in the cost.

Temperature stress and creep

In order to overcome the existing type double-layer co-extrusion wood-plastics material needs a large number of high polarity thermoplastic resin is added in the surface layer, and the shortcomings of the table, the core layer material limited choice, researchers study intends to provide a kind of three layers by the table – in – core structure of wood plastic composite co-extrusion type, is added to the original surface of maleic anhydride grafted polyethylene (PE – MA), maleic anhydride grafted EVA, ethylene – acrylic acid copolymer, ethylene – ethyl acrylate copolymer, ethylene-vinyl acetate – vinyl alcohol copolymer high polarity thermoplastic resin independently constitute a binding layer (middle), In order to improve the adhesion between surface and core layer without increasing the amount of high polarity thermoplastic resin.

Co-Extrusion Decking

Compared with ordinary two-layer co-extrusion deck profiles, the use of high polarity thermoplastic resin as the middle layer of three-layer co-extrusion deck materials can improve the stripping value of the table-core layer, and graphene can significantly increase the wear resistance of the surface of the profiles. The core layer USES glass fibre as the reinforcing material, which can improve the tensile strength, impact strength and bending properties of the material. Three-layer co-extrusion deck profile has super wear-resistant, high strength, anti-tearing and other advantages, integrated with its cost, performance, environmental protection factors, it will be more in line with the market demand of wood-plastic products.