草榴短视频

Scientists of the Department of Nanostructured, Fibrous and Composite Materials named after A. I. Meos, St. Petersburg State University of Industrial Technologies and Design, together with Mikhail Balabaev, a schoolboy, have created a new method for processing carbon fiber to produce carbon fiber contained in it, which can be reused.

The project team became the winner of the competition "Support for scientific and engineering creativity of high school students" of the Committee on Science and Higher Education.

Mikhail Balabaev studies in the 10th grade of school No. 457 in Vyborg district. A year earlier, Mikhail and his classmates had attended a career guidance master class "Composites around us" at the Department of Nanostructured, Fibrous and Composite Materials named after A. I. Meos, 草榴短视频. Working in the laboratory with university scientists inspired the student to create his own research project to develop a method for recycling carbon fiber. His initiative was supported by university professors.

Under the guidance of Olga Gladunova, a teacher at the department, Mikhail studied polymer materials, combining his studies at school with serious scientific research. He regularly worked in university laboratories, where he conducted experiments and analyzed the data obtained.

"Carbon fiber is a polymer reinforced with carbon fiber, which is used to manufacture parts of cars, motorcycles, spacecraft, airplanes, helicopters and other aircraft. "Expired parts accumulate in numerous "cemeteries" 鈥� landfills, replenishing them with polymer waste. Most often, mechanical crushing is used to process carbon fiber, followed by the use of this crushed crumb to harden, for example, concrete. However, the basis of carbon fiber is carbon fiber, which is expensive and energy鈥攊ntensive, and therefore suitable for reuse. Therefore, an urgent task is to find ways to extract carbon fiber from a polymer binder in order to reuse it," comments Mikhail Balabaev.

As a result, a combined method for recycling carbon fiber waste (carbon fiber in an epoxy matrix) was created, combining chemical dissolution and thermal decomposition of the polymer. The advantage of this method is the efficient separation of expensive carbon fibers from a composite with a degree of purification of up to 96% and preservation of their original structural properties for reuse. In addition, the method is more environmentally friendly by reducing the volume of non-recyclable waste.

"Our method allows us to "wash" expensive carbon fibers from old plastic. As a result, we get an almost pure, undamaged fiber that can be reused to create strong and lightweight parts, rather than simply turning them into debris or crumbs," adds Olga Gladunova.

Other scientists from the department also contributed to the success of the project: Natalia Lukicheva was responsible for planning the experiment and processing the results, Ivan Kortunov was responsible for heat treatment of the samples, and Ekaterina Shirshova provided consulting support on the polymer matrix solvolysis technique.

The project was successfully defended at school, and then it was highly appreciated by the jury of the competition "Support for scientific and engineering creativity of high school students". Mikhail was awarded a winner's diploma, valuable prizes and a collection of scientific papers. His supervisor Olga Gladunova was awarded a commendation from the Committee on Science and Higher Education.