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When the size of the nano-ferric oxide particles is reduced to the nanometer order, due to the small size effect, surface effect, quantum size effect and macroscopic quantum tunneling effect of the nanoparticles, it has a special difference from the conventional bulk materials. Magnetic properties. This also makes it have special applications in the fields of industry, biomedicine and so on. 1.Mag...
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Preparation of kerosene-based magnetic fluid of Fe3O4 In this experiment, analytically pure ferric chloride, ferric chloride and ammonia (NH3 content 25%) were used to prepare magnetic particles of Fe3O4 according to chemical coprecipitation method. The chemical reaction equation is 2FeCl3·6H2O+FeCl2·4H2O+8NH3·H2O= Fe3O4+8NH4Cl+24H2O (1) In the dissolution process, FeCl2·4H2O blue-green crystals a...
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Ferric oxide Nanopowder is a crystal, and its internal molecules are arranged in a regular manner, and the molecular current orientation is uniform, resulting in magnetic properties. When the magnet is brought close to the ferromagnetic substance, it is magnetically affected by the magnet, and the internal molecular current of the ferromagnetic substance tends to be regularly oriented and mag...
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In our daily life, we often use various forms of magnets, and many people with magnetic liquids have definitely not seen them. Magnetic fluid is a kind of magical liquid. In short, it is a fluid-like substance with magnetism. It is covered with spikes and can change shape with magnetism at will, just like magic. Magnetic fluid is a colloidal liquid composed of magnetic solid particles, carrier liq...
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First. Principle of magnetic fluid sealing Magnetic fluid has both liquid fluidity and solid magnetic properties. The magnetic fluid sealing technology is realized by utilizing the responsiveness of the magnetic liquid to the magnetic field. When the magnetic fluid is injected into the gap of the magnetic circuit composed of high-performance permanent magnets, pole shoes with good permeability, an...
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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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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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Advantages of nano ferroferric oxide black magnetic powder: 1. Nano Iron oxide black magnetic powder has the characteristics of high permeability, low coercivity and low remanence; 2. Nano Fe3O4 black magnetic powder has good dispersibility, is not easy to agglomerate, and has strong magnetism; 3. One-dimensional nano ferroferric oxide black magnetic powder has good magnetic permeability and good ...
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(1) Black nano Fe3O4 iron oxide: Size: 30nm, PH: 8-10, SSA:4-5g/cm3 Black nano ferroferric oxide is a mixed valence oxide of iron with a melting point of 1597°C. It is insoluble in water but soluble in acid solutions. Vk-EF01 has anti-corrosion effect. For example, the bluing of steel parts (also known as blue-burning and baking blue) is to use the oxidation effect of alkaline oxidizing solution t...
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1、 Safety and Environmental Protection Nano magnesium oxide has very high safety and environmental friendliness. As a non-toxic and harmless material, compared to traditional magnesium oxide materials, nano magnesium oxide has higher strength and durability, as well as better corrosion and wear resistance, which can be used for a long time in various harsh environments. 2、 Strong adsorption capaci...
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