With the reduction of forest resources, timber supply decreased, can not meet the people's production and living needs. At the same time, the processing of plastic waste was also becoming a pressing environmental problem solving. A new material - WPC ideal substitute timber. WPC system using wood flour or plant fiber filled thermoplastic resin ultrahigh share or thermoplastic plastics recycling materials, add some related modifier, by the extrusion of sheets, profiles, pipes together.
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Such products can substitute the appropriate wood products, whereby people can save a lot of forest resources, to dispose of large amounts of waste wood flour and wood processing waste plastics generated, it can greatly help to protect and improve the ecological environment, it is in line 2l century environmentally friendly chemicals and new materials development direction. 1 WPC definition and characteristics 1.1 WPC WPC definitions are sawdust, wood chips, bamboo shavings, rice husk, wheat straw, bran, soybean hulls, peanut hulls, bagasse, cotton straw and other primary biomass-based raw materials, the use of polymer plastic filled with modified principles and characteristics of the interface chemistry, compounding a certain proportion of plastic-based material, a reversible recycling process after forming a special process, covering a wide range of products variety, shape structurally diverse base materials, at home and abroad this title vary, there are also call it: wood, green wood, wood technology, recycled wood, polymeric timber, polyethylene protect wood, plastic, wood or the United States Poly Wood, the English name: Wood-Plastic Composites, abbreviated as WPC.
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Generally, biomass materials as the base material to add a certain proportion of plastic raw materials, plastic raw materials to add material or a certain percentage of the biomass material as a base, can be called wood-plastic composites. Features 1.2 WPC: (1) raw material resources, and its basic raw material portion of the material into waste utilization, wide variety of sources, low value; plastic components do not ask, old and new material or mixture can be, fully reflects the utilization and efficient use of resources; (2) products can be plasticized wood products for artificial synthetic products overall, randomly adjust the product technology and formulations according to requirements, thereby producing different material properties and shape, its profile utilization close to 100%;
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