Carbon fiber is a polymer of sime form of graphite. Graphite is a form of pure carbon. In graphite the carbon atoms are arranged in large sheets of hexagonal aromatic rings. Carbon fiber is made from another polymer, called polyacrylonitrile, through a complicated heating process. When polyacrylonitrile is heated, the heat causes the cyano repeating units to form rings. As the heat increases, the carbon atoms lose their hydrogens and the rings become aromatic. This polymer constitutes a series of fused pyridine rings. The temperature is then increased to about 400-600Cº. In this way, adjacent strings are joined. This heating releases hydrogen and gives a ribbon-shaped ring-fused polymer. By further increasing the temperature from 600 to 1300Cº, new ribbons will join to form wider ribbons. This releases nitrogen. As can be seen, the polymer that is obtained has nitrogen atoms at the ends, so these ribbons can join to form even wider ribbons. As this occurs, more nitrogen is r...
FRENCH COMPANY DEVELOPS CARBON RECYCLING SOLUTION Extracthive works on thr industralization of the recycling of composite materials, mainly carbon fiber. Mehdi Mahmoundi proyect manager for the technology called Phyre, tell us more about the method ans the applications that could be of interest to the marine industry. Extracthive was created in 2015 as a spin-off of a French Atomic Energy Commision (CEA) project. Its main activity is the development of innovative and tailored processes for the recycling of industrial waste. Buildings on existing technologies or through new solutions, he gets the method off the ground in the lab and then helps his client move to industrial scale, either through existing recycling channels or by identifying the players needed to create a new recycling circuit. "In 2019,we acquired a subsidiary specializing in the recycling of abrasives and ceramics, based in the Vaucluse. The idea is to recycle, separate a...