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"Limiting the use of plastic bags, light 'blocking' is not enough, and we need to 'sparse' at the same time as 'blocking'." So how do you turn scrap plastic into waste?
Method one: recycling of waste plastics made of pollution-free "plastic wood"
Wu Zhuoliang, a senior engineer at Xi'an Yuantong Jiaoda Plastic and Wood Engineering Technology Center, said: It is best to recycle these waste plastic bags and make them into plastic wood. This will not only reduce white pollution, but also reduce wood consumption. At the same time, To achieve the purpose of recycling.
Wu Zhuanliang also demonstrated the project currently being developed by the Plastic-wood Engineering Technology Center and some of the products it has developed. The reporter saw some small plates such as “windows, doors, pipes, planks, and floorsâ€. There were white, gray, and small holes in the middle. The reporter could not help but carefully touched one of the "pipes", smooth and cold. If it weren’t for Mr. Wu’s introduction, the reporter could not believe that these products were actually made from used plastic bags and some wood. "The plastic wood used to be waste plastics. We spent 300 yuan for a ton to recycle in Jiangcungou. After being processed by our professional technology, they have no pollution, and they are strong and durable. We are also developing plastic 'tieboards'. Some of the sleeper materials once rolled off the train once it took a long time, and the composite material made of recycled plastics can also prevent fire and mildew. According to Mr. Wu, this is the center of their plastic and wood technology. The 2008 SME Technology Innovation Project Review Conference will develop a project for the development and application of cotton stalk bio-plastic-wood composite new materials in order to find a way out for waste plastics. According to its introduction, they are planning to build a production base with an annual output of 20,000 tons of HWPC plastic wood multi-recycled polymer alloy materials. It is estimated that it will be built near Jiangcungou within two years. By then, 60,000 tons of plastic can be consumed in one year.
Method 2 : Use of waste cattle wool etc. to make "special plastic film"
"As soon as the plastic is buried, it will not degrade in a hundred years. In fact, the best way is to change it into biodegradable," said Wei Junfa, professor and doctoral supervisor of the Shaanxi Normal University's School of Chemistry and Materials Science. It is possible to use renewable resources, especially some Discarded resources, made of "special plastic film", can be degraded within three to six months.
To Wei Junfa and Associate Professor Li Wenxin of Shaanxi University of Science and Technology, he developed the “plastic film†with uniform texture, thin and flexible, and light and transparent. According to Professor Wei, these protein plastic films are degradable. Its main raw materials are waste cattle and wool from the tannery industry, and abandoned chicken and duck hair from the breeding industry, rather than oil resources. "This product is expected to be used as a plastic film for agricultural use, plastic bags for supermarkets, etc. It can solve problems such as environmental pollution caused by waste of cattle and wool, breeding of mosquitoes and flies, germs, etc. It can also save oil resources (since plastics are generally used as raw materials). The important thing is that it can be decomposed in the ground for months and it will not cause environmental pollution and deterioration of the quality of cultivated land, and its degradation products can also be absorbed by plants such as organic fertilizers, which can solve the current problems caused by the heavy use of plastic bags. 'White pollution' and other environmental hazards."
June 06, 2024