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The new plastic wood composite material has high strength and hardness, acid and alkali resistance, corrosion resistance, no deformation, no formaldehyde, and easy recycling. It can be made into various cross-sectional shapes and sizes, which not only retains the advantages of wood processing performance, It has overcome the shortcomings of wood that is not durable and fearful of insects. It is now becoming the new favorite of the international and domestic building materials market, and it can completely form a huge new industrial system.
Both economic and environmental protection effects of plastic wood composite materials are prominent, and plastic wood composite materials have more environmental effects and economic advantages: the first is the protection of forest resources. plastic wood composites are materials composed of a mixture of plant fibers and plastic materials. Among them, woody fibers such as sawdust, shavings, wood chips, bamboo shavings and coconut husks, and herbal fibers such as wheat straw, cotton straw, hemp stalk, bran, soybean hulls, peanut husks, cotton stalks, sunflower stalks, bagasse, etc., are all discarded low-value natural resources, after screening, crushing, grinding and processing, become wood composite materials. The plastic materials used for plastic wood composite material processing can be thermosetting plastics, such as phenolic resin, amino resin, epoxy resin, etc., or thermoplastic plastics.
Frequently used plastic wood composite products additives are mainly solubilizers, coupling agents, lubricants, colorants, antibacterial agents, and ultraviolet stabilizers. These materials are non-toxic and harmless to the human body and the environment. It is understood that the total amount of waste plastics is as high as 70 million tons per year, and waste plastics can only be decomposed more than 200 years after landfills, and toxic substances will be generated during the decomposition process, which will damage the soil; there are more than 600 million tons of waste plastics each year. Straw needs to be treated, and most of the treatment methods are incineration, which causes serious air pollution and even affects the normal operation of aviation.
From the perspective of using materials, new plastic wood composite materials can alleviate the problem of "white pollution" to a certain extent, and can also alleviate the problem of air pollution caused by the burning of waste crop straws.