The non-degradability of plastics has been criticized by people. Researchers have finally found a way to understand plastics. Future buildings, bridges, tanks, personnel carriers, hummers and civilian vehicles will all be plastic. See how Professor Thomas Nosker turned plastic into a treasure.
Can you imagine a material that is lighter than steel, has a longer life than wood, and is strong enough to support a 120-ton locomotive?
The material you imagined in your mind can now be made from recycled milk bottles, coffee cups and other plastics.
This sleek, non-toxic and harmless material is called structural plastic wood and was invented by Thomas Nosker, assistant research professor at the School of Materials Science and Engineering at Rutgers University and lead researcher at the Advanced Materials Center's Immiscible Composites Division. Nosker graduate student Richard W. Renfree made his own contribution to the invention of this revolutionary material, and later he became a professor at Rutgers University.
Nosker said: "People complain about plastics because it doesn't degrade, and we've found a way to turn this shortcoming into a product advantage."
Structural plastic wood is increasingly being used for bridge construction at US Army bases, as well as for US and overseas terminals, picnic tables, park benches, parking lots, and other structures. In the United States alone, structural plastic wood has produced approximately 1.5 million railway sleepers. Since each sleeper weighs about 200 pounds, this means that about 300 million pounds of plastic will eventually not be landfilled in landfills, suffocating marine life and polluting beach soil.
Nosker is a fruitful inventor who has been at the forefront of plastics research for decades with his colleagues. They developed several types of recycled plastic wood, added flame retardants when machine-made plastic wood, and tested their performance through a standard. In short, Nosker has 28 patents or pending patents in the United States in addition to overseas patents, and has earned millions of dollars in revenue for Rutgers University.
Find the key: the right plastic mix
Now 59-year-old Nosker, who tried to deal with mountainous waste containers during his Ph.D. at Rutgers University 30 years ago. Plastics quickly replaced glass as a packaging material for two large-capacity drinks, milk and soda, and eventually entered the landfill.
Nosker and other researchers have devised a method for sorting, cleaning and processing polyethylene terephthalate (PET) soda bottles. Carpets, insulated jackets, filled mattresses, and even new soda bottles made from soda bottles have earned them a lot of profit. Another more troublesome plastic waste called high density polyethylene (HDPE) can already be used to make milk bottles.
Nosker said: "The low price of HDPE can't afford the cleaning cost of the milk bottle that is ready to be recycled, but we can't just throw it away when we turn around. Plastic experts say it has potential recycling value, so we want to do this. jobs."
Initially, Nosker and his colleagues tried to replace the chemically treated wood with bottles on park benches and decks. However, when recycled HDPE is repeatedly sitting or frequently walking on it, it will sag as time goes by. Some researchers have tried to combine HDPE with other plastics on food and household goods boxes, but have not succeeded.
Then Nosker found a viable solution.
Nosker said: "We mix HDPE with polystyrene from the old big container in a certain ratio, so that the mixed plastic will be strong because of the interlacing of tiny particles.
From creating a recyclable plastic that can be used to making things using them is a huge leap. Wood from forests has been a durable, easy to process and storage building material for centuries. But wood also has its own drawbacks; because it needs to protect insects, other animals and elements, it is treated with toxic, preservatives that can be immersed in the soil, so that water and groundwater pose risks to people, animals and plants. Structurally recycled plastic wood is mostly a hard plastic to enhance the reinforcement of polyethylene or recycled composite materials such as car bumpers, there is no such risk.
Eighteen years ago, Nosker and materials engineer Richard G. Lampo built the first structurally reclaimed plastic timber bridge for the vehicle at Fort Leonard Wood in Missouri at the Structural Engineering Research Laboratory of the US Army Corps of Engineers in Champaign Illinois.
Lampo, who recently visited the bridge, said: "The large-scale industrial production of picnic tables and park benches is a good application, but we are trying to promote the application of packaging bags according to people's needs and effectively save costs. This is a must-see. Program."
Building more bridges for the US military
Today, Nosker's invention is widely used in complex railway intersections, and the durability of railway sleepers is greatly enhanced. For example, the Chicago Transportation Bureau found that plastic sleepers are an economical option for crack repair of viaducts.
In 2002, Nosker helped New Jersey build the first structural recycled plastic bridge in an environmentally fragile pine forest. The bridge is a creative I-beam design that, while subject to the weathering of the elements, is still open to traffic.
Rutgers University has licensed this state-of-the-art technology to two companies: AXION International Inc. of Zanesville in Ohio, which uses recycled materials to make railway sleepers and construction products; and manufactures similar products in Sicut Enterprises Limited in London.
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