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Researchers do relevant tests in the project laboratory
Editors' press innovation is the primary driving force for development. Since its inauguration in June 2016, the Qingdao International Academician in the scientific planning and construction of the Lishui District of Qingdao has signed a total of 108 academicians, of which 79 are foreign academicians, accounting for 73%. The construction of academician harbors is included in the “Shandong New and Old Kinetic Energy Conversion Comprehensive Experimental Areaâ€. Overall plan for construction. The Academician of Qingdao has actively explored innovations in the institutional mechanism, making full use of the 1/3 pattern of Chinese academicians, Chinese-American foreign academicians, and pure foreign academicians, promoting cross-convergence and innovation, and working hard to enhance the supply of science and technology. , Breakthroughs were made in the admission of academicians to participate in, and even to lead, international scientific plans and major science projects.
In order to demonstrate the achievements of industrialization, this newspaper will launch related reports one after another from today.
When the haze came, should we talk about the change of color or whether we should meet it? The team of the academician of the International Academician of Qingdao Shilam Ramakrishna used electrospinning nanofiber technology to develop the product and gave the answer.
Academician Shiram Ramakrishna is a foreign academician of the Royal Academy of Engineering and a member of the Indian National Academy of Engineering. He is currently the director of the nanofiber and nanotechnology center of the National University of Singapore. For a long time, Silam’s academicians engaged in research on the processing and surface functionalization of polymer composites, biocomposites, and electrospinning nanofibers. The industry is known as the father of nanofiber electrospinning.
Anti-fog screens and masks are the results of the participation of the academician Shilam. "Electrospinning nanofiber material is a fiber material with a diameter in the range of several tens to several hundreds of nanometers. The anti-fog screen window is covered with a porosity of 80% on the surface of ordinary screens and millions of micropores per square centimeter. The nanofiber membrane has a pore diameter of between 100 nanometers and 300 nanometers, and considering the production cost and practical use effect, the filtration efficiency of PM2.5 (particles with a diameter less than or equal to 2.5 micrometers) is controlled at about 95%, which is effective. Blocking haze and dust into the room, without affecting the normal circulation of air, and with auxiliary functions such as sterilization, disinfection, and radiation protection.†Shirham’s participation in the implementation of the project's industrialization – General Manager of Qingdao Kanda Technology Dr. introduction.
In the exhibition hall of Kanda Technology, the reporter saw that the appearance of anti-fog screens was not very different from that of ordinary screens; the appearance of anti-fog screens was light gray, with a slight lightness and whiteness; Obviously, the anti-fog screens are stronger, smoother, and the "eyes" are very small. The staff performed a performance demonstration on the spot for the reporter and poured a bottle of water on the screen. After a few minutes, there was no water infiltration. The entire gauze was airtight and impermeable.
Yu Yu introduced that in terms of filtering dust effects, electrospun nanofiber materials can achieve a maximum filtration rate of more than 99% for PM 0.3 (solid particles or droplets with a diameter of 0.3 μm or less) and achieve traditional filtration. Less than half the pressure drop. In terms of masks, the pressure drop will be reduced, the resistance will be reduced, the breathability will be good, and the smoothness of people's breathing will be improved; in the case of industrial filter cartridges, the greater the resistance, the stronger the fan will be and the more it will be consumed. Energy, while reducing pressure drop and resistance, it is even more energy-efficient, and using nanofiber materials can save energy by a third.
“Silam’s academician has the reputation of the father of the nanofiber electrospinning, the core technology of this project, and represents the highest level in the world. The Taishan scholar Professor Yunyun Yun in this project is a well-known expert in electrospinning technology and can represent domestic At the advanced level, the technological level of the project in terms of industrialization has reached the international advanced and the domestic first.
According to reports, the marketization of project products takes a three-step approach, aiming at fast-moving markets for quick results. The first stage is the civilian nanofiltration products. The main products are anti-mite purification screens, anti-mite anti-virus masks, high-efficiency fresh air filter and high-efficiency air-conditioning filters, etc. The second stage products are industrial nanofiltration products, including special filter papers and molecular sieves. Materials and water purification materials; the third stage is medical products, including special protective clothing, tail environmental isolation membrane and medical dressings. The planned three-phase product market threshold is from low to high, and the technological content is continuously improving, with a view to continuously achieving sustainable product and market development. (Correspondent Xu Mengting Zhao Qian)
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