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Carbon nanotechnology began in the 1990s, and its presentation has greatly improved and improved the national economy. Its internal structure is of a hierarchical type and can exhibit special chemical properties in the field of catalysis and devices. At the same time, new nanomaterials appear after graphene and nanotubes, and new carbon nanomaterials have become a hot topic in many research fields...
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ZrB2 ceramic materials have extremely high melting point, strength, hardness and electrical conductivity (and the temperature coefficient of conductivity is positive), as well as a low coefficient of thermal expansion. In addition, they have good chemical stability, flame retardancy, heat resistance, corrosion resistance and Lightweight and other special properties, so it is very widely used. 1.1 ...
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With the continuous development of science and technology, electromagnetic waves are more and more widely used in life. Among them, the electromagnetic wave frequency of 1 ~ 20ghz is widely used in wireless communication, high-frequency circuit components and other related fields. Due to the application of absorbing materials in EMI and RCS, absorbing materials are getting more and more attention,...
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The antibacterial materials used in the packaging industry are mainly antibacterial plastics, which are used in the form of films, hollow containers and totes. Organic antibacterial agents have been limited in their application in the packaging industry due to their safety issues, while natural antibacterial agents have attracted people's attention with high efficiency and safety. 1. Antibacterial...
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The nano cesium tungsten bronze powder produced by our company is an inorganic nano material with good near-infrared absorption, with uniform particles and good dispersion. It has good absorption in the near-infrared region (wavelength 800-1200nm) and high transmittance in the visible light region. The visible light transmittance of the thin film prepared by using nano cesium tungsten bronze powde...
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With the rapid development of industry, a large number of pollutants are discharged into the environment, causing many environmental problems, such as soil, water and air pollution, which poses a great threat to the ecological environment and human health. In recent years, with the rise and development of nanotechnology, various nanomaterials have been widely used in the treatment of environmental...
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Refractory materials refer to inorganic non-metallic materials with a refractoriness exceeding 1580°C. Refractoriness refers to the Celsius temperature at which the refractory cone sample resists the action of high temperature without softening and melting under no load. There are many types of refractory materials. According to the chemical characteristics, it can be divided into acidic refractor...
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Application Analysis of Nano Tungsten Trioxide Nano WO3 yellow tungsten has a large specific surface area and significant surface effect. It is a good catalyst. It can be used as both a main catalyst and an auxiliary catalyst, and it has a high selectivity to the reaction. WO3 has a strong ability to absorb electromagnetic waves and can be used as an excellent solar energy absorbing material and r...
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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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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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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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