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The singular properties of nanomaterials include: ①Surface effect The surface area of a spherical particle is proportional to the square of the diameter, and its volume is proportional to the cube of the diameter, so its specific surface area (surface area/volume) is inversely proportional to the diameter. As the particle diameter becomes smaller, the specific surface area will increas...
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As a new material of the technological revolution, ceramic materials have attracted the attention of some developed countries as early as more than ten years ago. The fatal shortcomings of ceramic materials are its brittleness, low reliability and low repeatability. These shortcomings have seriously affected the application range of ceramic materials. Only by improving the fracture toughness of ce...
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Cu is a transition metal and has a special electronic structure and electronic gain and loss properties that are different from other metals. It can show good catalysis for different chemical reactions and is widely used in the field of catalysts. When the size of CuO particles is as small as nanometers, due to the special characteristics of multiple surface free electrons and high surface energy ...
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The phase change toughening of yttrium stabilized nano zirconia and the toughening effect of nanoparticles are used to improve the comprehensive mechanical properties of the alumina matrix. Adding different contents of nano 3Y-ZrO2 to the alumina matrix, the comprehensive mechanical properties of the material with a content of 15wt% of nano ZrO2 reach the best (flexural strength 766.74MPa, fractur...
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Nano cuprous oxide Cu2O is a kind of photoelectric material with a wide range of uses. The main uses are as follows: Nano cuprous oxide Cu2O is used as anti-fouling primer for ships in the coating industry to prevent marine organisms from adhering to the bottom of ships; Nano cuprous oxide Cu2O is used as a colorant for red glass and red enamel in the glass and ceramic industries; Nano cuprous oxi...
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Because nano copper oxide CuO is a p-type semiconductor, it has holes (CuO) +, which may interact with the environment and play an antibacterial or antibacterial effect. Studies have shown that nano CuO has good antibacterial ability against pneumonia and Pseudomonas aeruginosa. The antibacterial process of metal oxide nano-copper oxide CuO can be simply described as: under the excitation of light...
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Primary particle size parameters of nano copper oxide:20nm, 50nm, 100 nanometers, purity 99% Min. Application of nano copper oxide: 1. Nano copper oxide is an important multifunctional inorganic material, which is widely used in printing and dyeing, ceramics, glass and medicine and other fields. 2. Nano-copper oxide can also be used as a burning rate catalyst for rocket propellants. It can no...
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Chemical modification and dispersion is to use the surface groups of nanoparticles to form chemical bonds with reactive organic compounds. The nanoparticles are soluble in organic media due to the branched chains or groups of organic compounds on the surface. dispersion in. There are usually two ways of chemical modification: one is to use the end groups of macromolecules to chemically react with ...
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Nanoparticles have a special surface structure, which lacks adjacent coordinating atoms on the surface, and has high activity, so it is easy to agglomerate. Due to the strong self-absorption property among nanomaterial particles, the agglomeration of nanoparticles is inevitable. Aggregates can be divided into two types: hard agglomerates and soft agglomerates. The formation process of agglomerates...
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The thermal properties of nanomaterials are inseparably linked to the motion behavior of molecules and atoms in the material. such as the melting point of nanomaterials. The melting point of a solid substance is fixed when its form is large in size. For nanoparticles, due to the small particles, the high surface energy of the particles, the large number of surface atoms, the incomplete coordinatio...
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Particle size: The size of the particles is called particle size, usually the particle size of spherical particles is expressed by diameter/particle size, and the particle size of cubic particles is expressed by side length. Particle size is the diameter of a particle. However, most of the particles in practice are irregular. Therefore, in order to describe the size of the particles more convenien...
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Nanomaterials exhibit many exotic properties that traditional materials do not have. The first thing we need to know is that the nanometer (mainly refers to less than 100nm) of the composition of nanomaterials has four major effects: 1. Small size effect The boundary conditions of the crystal periodicity are destroyed; the atomic density near the surface layer of the amorphous nanoparticle decreas...
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