Sujet : Wood and plastic composite materials to create the myth of 80 billion

Wood-plastic new materials with high strength and hardness, acid and alkali, corrosion resistance, no deformation, no formaldehyde, easy to recover, can be made into a variety of cross-sectional shape and size, both to retain the advantages of wood processing performance, But also to overcome the wood is not durable, Afraid of the shortcomings of insects, now is the international and domestic building materials market new darling. Some experts predict that by 2010, in China if the annual recovery of 1.5 million tons of waste plastics for the production of wood products, the annual output of up to 5 million tons to 10 million tons, resulting in industrial added value of 40 billion to 800 Billion, can form a huge new industrial system.
Liu Jia stressed that wood-plastic materials with more environmental effects and economic advantages:
The first is the protection of forest resources. 1 ton of wood-plastic material can be converted to 2.5 cubic meters of wood, which is probably 1 acres of land on the fast-growing forest 1 year maximum material. At present, China's annual demand for wood about 100 million cubic meters, the actual supply of only 60 million cubic meters, the gap of up to 40 million cubic meters. Each with 1 ton of wood-plastic material, can reduce the 1 acres of land for deforestation.
Followed by waste utilization. Wood-plastic materials are currently the most widely used in the international product is the tray, Europe and North America, wood plastic tray has accounted for nearly half of the market share. China's current annual demand for pallets is about 100 million, is expected to grow to 200 million by 2015, according to the then wooden pallets can account for 30% of the market share, this alone can consume 1 million tons of waste plastics per year , Waste plant waste more than 1.5 million tons.
Wood-plastic composite material is composed of plant fiber and plastic raw materials mixed composition of the material. Among them, woody fibers such as sawdust, wood shavings, bamboo chips and coconut shells, herbaceous fibers such as wheat straw, cotton straw, linen, bran, soybean hull, peanut shell, cotton stalks, sunflower stalk, bagasse, etc. Abandoned low-value natural resources, after screening, crushing, grinding and processing, it becomes wood-plastic wood raw materials. The plastic raw materials used for the processing of wood-plastic materials can be thermosetting plastics such as phenolic resins, amine-based resins, epoxy resins and the like, and can also be thermoplastics. Frequently used wood-plastic products are mainly solubilizers, coupling agents, lubricants, foaming agents, colorants, anti-bacterial agents, UV stabilizers, these materials belong to the human body and the environment non-toxic harmless material.
It is understood that China's annual total of more than 70 million tons of waste plastics, waste plastics in the landfall after more than 200 years to break down, and the decomposition process will produce toxic substances, damage to the soil; China each year about 600 million tons Above the straw to be treated, most of the way to deal with burning, bringing serious air pollution, and even affect the normal operation of aviation. Wood plastic new materials from the use of raw materials point of view, to a certain extent, ease the "white pollution" problem, but also can ease the waste crop straw burning caused by air pollution problems.
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