The hottest carbon fiber is going out of date. The

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Carbon fiber is going out of date. New materials are five times stronger than steel. They are 1/5 lighter. The key is that they can also be used for civil use. Lightweight body is the direction that every brand is constantly pursuing. Lightweight body structure can bring excellent fuel economy and improve the vehicle's handling feeling and control limit

however, the balance between lightweight, safety and manufacturing cost has always been a triangle balance that is difficult to break, such as carbon fiber materials

carbon fiber is not only a very rigid material, but also a very strange material. First of all, its high cost can not be enjoyed by any vehicle model

secondly, different from steel structures, carbon fiber components cannot be repaired in case of accidents and can only be abandoned. Therefore, carbon fiber bodies only appear in the world's first-class super car or hyper ca. the components of water are absorbed into the hydration products

the 7 series of the million class BMW flagship car is also made of carbon fiber, which is only used in a small area at the core positions such as the B-pillar

however, recently, the media reported that researchers from Kyoto University in Japan have developed a new material, which is expected to replace carbon fiber and steel aluminum materials and become the raw material for car body manufacturing

it is reported that the new material, such as gas channel, uses plastic and wood pulp. This material is named cellulose nanofiber. Its weight is only one fifth of that of steel, but its strength is increased by five times

the official mark of BMW on the carbon fiber core is: its strength is five times that of steel, and its weight is 30% lighter than that of aluminum

by contrast, the new material will be lighter than carbon fiber

at present, the research team of Kyoto University is cooperating with Denso Corp, Toyota's largest parts supplier, and other companies

fibers are made by decomposing wood pulp into materials of hundreds of microns or thousandths of a millimeter. Researchers are studying plastics mixed with fibers

after that, the wood fiber is kneaded into the plastic and decomposed into nano fibers. This process can reduce the production cost to one fifth of that of other processes

how to control the cost is very important. Even if the process cost is reduced to only 1/5, at present, a kilogram of cellulose nanofibers costs about 1000 yen (about US $9), and the price of aluminum alloy and high-strength steel is only US $2 per kilogram

it is also pointed out in the report that researchers hope that by 2030, the price of large-scale production will be reduced by half (that is, US $4.50), and in 2025, the price of carbon fiber is expected to hover around us $10 per kilogram

the sharp drop in price can bring unparalleled cost performance of this material, which is cheaper than carbon fiber and higher than steel and aluminum alloy strength, or it will be a new manufacturing technology innovation

researchers said that the first cellulose nanofiber manufacturing prototype car will be officially unveiled in 2020 to test its real strength. "

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