Researchers do relevant tests in the project laboratory
Editors' press and innovation is the primary driving force for development. Since its launch in June 2016, the Qingdao International Academician in the scientific planning and construction of Liye District in Qingdao has cumulatively signed and introduced 108 academicians, of which 79 are foreign academicians, accounting for 73% of the academicians. The port construction is included in the “Overall Plan for the Construction of New and Old Kinetic Energy Conversion Comprehensive Experimental Zones in Shandong”. The academician in Qingdao actively explores institutional innovations, making full use of Chinese academicians, foreign-born academicians of Chinese origin, and pure foreign academicians each occupying 1/3 of the pattern, promoting cross-cutting. Integrate innovation, and work hard to enhance the supply of science and technology, strive for the layout of large scientific installations, achieve breakthroughs in the participation of academicians who have joined the port, and even take the lead in international scientific plans and major science projects.
In order to demonstrate the industrialization results, this newspaper will launch related reports one after another from today.
After the haze came, are we talking about change, or should we go forward? The team of academicians of the Qingdao International Academician Gang Shiram Ramakrishna used electrospinning nanofiber technology to develop products. answer.
Academician Shiram Ramakrishna is a foreign academician of the Royal Academy of Engineering and a member of the National Engineering Academy of India. He is currently the director of the Nanofiber and Nanotechnology Center of the National University of Singapore. For a long time, Academician Shilam was engaged in polymer composite materials and biocomposite. Materials, electrospun nanofiber processing and surface functionalization research, is known by the industry as the father of nanofiber electrospinning.
Anti-fog screens and masks are the results of the participation of Academician Shilam in the project. 'Electrostatic spinning nanofibers are fiber materials with a diameter in the range of tens to hundreds of nanometers. Anti-fog screens cover the surface of ordinary screens. A layer of nanofiber membrane with a porosity of 80%, millions of micropores per square centimeter, and a micropore diameter of between 100 nanometers and 300 nanometers. Considering the production cost and practical use effect, the screen window PM2.5 (diameter The filtration efficiency of particles less than or equal to 2.5 microns is controlled at about 95%, which can effectively block the haze and dust from entering the room, and does not affect the normal circulation of the air. It also has auxiliary functions such as sterilization, sterilization, and radiation protection. Academician Shilam Participated in the implementation of the project's industrialization - Qingdao General Manager of Science and Technology Co., Ltd. Yu Na introduced.
In the exhibition hall of Kanda Technology, the reporter saw that the appearance of anti-fog screens was not very different from that of normal screens; the appearance of anti-fog screens was light grey, slightly shiny, and white; touched by hand. 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 reporters. He poured a bottle of water on the screens. After a few minutes, no water permeated through the entire yarn. The net is breathable.
Yu Yu introduced that in terms of filtering dust effects, electrospun nanofiber materials can achieve a filtration effect of more than 99% for PM 0.3 (solid particles or droplets with a diameter of 0.3 μm or less) and achieve conventional filtration. Less than half of the pressure drop. In the case of a mask, the pressure drop is reduced, the resistance is reduced, the breathability is good, and the smoothness of the person's breathing is improved. In the case of industrial filter cartridges, the greater the resistance, the more the fan must be. Intensity, the more energy it consumes, the lower the pressure drop and resistance, and the more energy-efficient, the use of nanofiber materials can save a third of energy.
“Silam’s academician has the reputation of the father of nanofibre 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 technical level of the project in terms of industrialization has reached the international advanced level, the first in the country. ' Yu Yu said.
According to reports, the marketization of the project's products takes a three-step approach, with the goal of fast-moving the market for immediate results. The first stage is the civilian nanofiltration media products. The main products are anti-mite clean screens, anti-mite anti-virus masks, and high-efficiency fresh air filter cartridges. And high-efficiency air-conditioning filters, etc.; second-stage products are industrial nanofiltration products, including special filter papers, molecular sieve materials, and water purification materials; and the third stage is medical products, including special protective clothing, tail environmental insulation film and medical dressings. Etc. The planned three-phase product market threshold is from low to high, and the technical content is continuously improving, with a view to continuously achieving sustainable product and market development.
