China Drying Network Information waste wood residue and waste plastics do not need to be treated as garbage. A new technology presided over by Northeast Forestry University can turn them into waste, making them water-resistant, corrosion-resistant and formaldehyde-free “ecological woodâ€. Do floors and furniture. At the 2012 National Science and Technology Awards Conference recently held, the “Wood Plastic Composite Extrusion Manufacturing Technology and Application†project, led by Professor Wang Qingwen of Northeast Forestry University, won the second prize of National Science and Technology Progress Award.
The standard name of "ecological wood" is a wood-plastic composite material. It is a new type of composite material made of biomass fibers made of wood processing residues, straw, rice husks, etc., plus waste plastics, which are melt-composited. Professor Wang Weihong of Northeast Forestry University's Key Laboratory of Biomass Science and Technology of the Ministry of Education said that the research on the “Extruding and Manufacturing Technology and Application of Wood-plastic Composites†at Northeast Forestry University began ten years ago, with Academician Li Jian and laboratory. Director Wang Qingwen first started to study. A ton of wood-plastic composite material is composed of 60% plastic residue and 36% plastic technical preparations. The materials used are all waste materials and can be extruded into various shapes to produce different colors and different patterns. It feels and looks like wood, but it is more water-resistant, corrosion-resistant, tasteless and non-toxic than wood. There is no need to worry about the release of formaldehyde. At present, this material is sold on the building materials market, and the business name is "ecological wood."
Not long ago, the outdoor plank road laid by the Changbai Mountain Scenic Area adopted “ecological woodâ€; the “eco-wood†was already used in the outdoor porch of the Beijing Olympic Stadium and the outdoor floor laid on the Shanghai World Expo. Because it is water-resistant and corrosion-resistant, it is currently used in the country as an outdoor floor, railings, handrails, and external wall hanging boards. There are also manufacturers who use it to produce furniture and interior floors. Unlike wood, this "eco-wood" can be recycled into new products after it is used.
Although the "eco-wood" is made of waste and the cost is low, the selling price of 6000-8000 yuan per ton can bring huge benefits to the company. The project technology has been promoted and applied in more than 80 wood-plastics enterprises in the country. The output value of direct benefits in the past three years was 620 million yuan, and the expected long-term profit was 100 billion yuan. This project has opened up new avenues for the efficient use of biomass resources, structural adjustment of forest products and industrial upgrading.
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