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By mixing a small amount of nano silica into concrete, ultra-high strength and ultra-high durability concrete can be easily prepared. At present, a large number of research results have proved that nano SiO2 has a good modification effect on cement. The cement paste doped with nano silica has reduced fluidity, shortened setting time, and significantly improved early strength. Nano-doped nano silic...
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Nanomaterials refer to materials in which at least one dimension in the three-dimensional space is in the nanoscale range or is composed of them as basic units. Nano-gold is a kind of nano-materials, which are nano-sized particles of gold, with a diameter generally between 1-100 nm. Nano gold has very special optical properties, which are mainly manifested in two aspects of light absorption and sc...
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The field of biomedicine is a brand-new research field formed by integrating the methods and theories of medicine, biology and other related disciplines. Its research content includes biomedicine, clinical applied chemistry, cytology and immunology. With the rapid development of technology, cutting-edge research and inventions in many popular fields play an important role in the field of biomedici...
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1. As a sensor material Nano TIO2 can be used not only for humidity and pressure sensitive components, but also as a sensor material to detect a variety of gases. For example, TIO2 can detect flammable gases such as H2, CO, and O2, and is especially used as an automobile exhaust sensor. By measuring the oxygen content in automobile exhaust, it can control the efficiency of automobile engines. 2. T...
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We all know that magnesium oxide is active and light, and there is also a kind of light burned powder also called magnesium oxide. However, many people mistakenly believe that light burned powder is light magnesium oxide, but in fact it is not the case. Although the main components of both are MgO, the important difference between light burnt and light weight is that the content is different, the ...
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The friction material is a polymer ternary composite material, which is a chemical and physical composite. It is composed of three types of polymer binders (rubber and resin), friction performance modifiers, reinforcing fibers, and other compounding agents. Series production and processing products. The friction material is characterized by good wear resistance and friction coefficient. At the sam...
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Precious metals refer to some rare and expensive metal materials, such as silver, gold, ruthenium, rhodium, palladium, platinum, iridium and other expensive metals. Nanomaterials refer to materials at the nanometer level on one-dimensional or multi-dimensional scales, such as nanowires and nanoparticles. Noble metal nanoparticles are nanomaterials composed of these noble metals, such as gold nanop...
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At present, the world vigorously advocates green and sustainable development, and nano-titanium dioxide is an excellent inorganic fine chemical material. Nano-titanium dioxide has broad prospects in the application and development of pulping and papermaking and functional paper due to its functions of sterilization and disinfection, high-efficiency self-cleaning, photocatalytic energy, and wastewa...
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With human beings, there are wars against viruses and bacteria. Although every time we end up with human victory, we have paid a heavy price. At present, the common PM2.5 masks on the market can only filter the particles with a diameter of 2.5 microns in the air, while the N95 mask can block 95% of the particles with a diameter of 2.5 microns in the air. At present, it is from Sars, influenza, Ebo...
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Nano ATO is a wide-bandgap n-type semiconductor material with non-resistive transparent conductivity. Due to its high conductivity, high visible light transmittance, and excellent mechanical and chemical stability, it is widely used in display devices, transparent electrodes for photoelectric conversion, solar cells, transparent heat insulation films, antistatic coatings and other fields. It is a ...
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The application of nano magnesium oxide as an expansion agent in cement-based materials is as follows: when nano-magnesium oxide is used as an expansion agent in cement-based materials, the mixing mass of nano-magnesium oxide is 1% to the mass of cementitious materials in cement-based materials. 10%; The advantage of using nano-magnesium oxide as an expansion agent is that the size of the magnesiu...
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1. The field of nano-ceramics Nano-ceramics refer to ceramics whose crystal grain size, defect size, second phase distribution and other microstructures are all at the nanometer level. It is usually made of nano-titania, nano-zirconia, nano-magnesia, nano-alumina and other particles through high-temperature sintering or hot pressing. Its advantages are good superplasticity, greater strength and ha...
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