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The organic/inorganic nanocomposite formed by dispersing the inorganic filler in a nanometer size in a general plastic matrix is called nanoplastic. In nanocomposites, nano-plastics have excellent properties such as high strength, heat resistance, high barrier properties, flame retardancy and excellent processability due to the nano-size effect of the dispersed phase, large specific surface area a...
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1. Application of ultrafine copper powder on MLCC internal electrodes Copper has the advantages of small resistivity, small electromigration speed, and low price. It is an ideal substitute for silver-palladium internal electrodes, but its chemical properties are more active. In the air, powdery copper with large specific surface area is easily Oxidation, the surface will form a film of Cu2O and Cu...
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The addition of nano SiO2 powder as an admixture to cement-based materials can improve many of the properties of cement-based materials. A large number of research results show that adding appropriate amount of SiO2 nanopowder to cement-based materials, due to the volcanic ash effect of nano SiO2 particle, nucleation effect and micro-filling effect, can significantly improve the early strength of ...
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The aluminum nitride nanopowder has the characteristics of high specific surface area, high hardness, high thermal conductivity and high insulation. It is a diamond-like nitride, stable to 2200 ° C, high room temperature strength, good compatibility with the substrate interface, and can improve compounding. Thermal and dielectric properties, mechanical properties and wear resistance of the materia...
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Aluminum nitride (AlN) is a new type of ceramic material with excellent comprehensive properties. It has excellent thermal conductivity, reliable electrical insulation, low dielectric constant and dielectric loss, non-toxicity and thermal expansion coefficient matching with silicon. The excellent characteristics of the series are considered to be ideal materials for a new generation of high-concen...
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First, the advantages of yttria stabilized zirconia YSZ Common zirconia stabilizers are usually alkaline earth oxides or rare earth oxides such as cerium oxide, cerium oxide, calcium oxide, magnesium oxide. The stability of these stabilizers to stabilize zirconia is roughly similar, but the performance is different. In application, yttria doped zirconia has good comprehensive properties and is the...
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1. Overview of ultrafine powder 1.1 Definition of ultrafine powder There is no completely consistent statement about the particle size boundaries of ultrafine powders. Due to the difference in the use, preparation method and technical level of ultrafine powders in various countries and industries, the particle size of ultrafine powders is divided. For example, the particle size of ultrafine powder...
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Since ultrafine powder has surface effect, small size effect, quantum effect and macroscopic quantum tunneling effect, it has many special properties in catalytic, optical, magnetic and mechanical properties compared with crystalline materials of the same composition. There are many important applications in the fields of medicine, microelectronics, and nuclear technology. "Plasma milling" refers ...
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The purpose of surface modification of ultrafine powder is: 1. In order to improve or change the dispersibility of powder particles; 2. Improve durability, such as resistance, light resistance, heat resistance, weather resistance, etc.; 3. Improve particle surface activity; Adding new physical, chemical and mechanical properties and new functions to the surface of the particles to increase the add...
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The purpose of surface modification of ultrafine powder is: 1. In order to improve or change the dispersibility of powder particles; 2. Improve durability, such as resistance, light resistance, heat resistance, weather resistance, etc.; 3. Improve particle surface activity; Adding new physical, chemical and mechanical properties and new functions to the surface of the particles to increase the add...
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The purpose of surface modification of ultrafine powder is: 1. In order to improve or change the dispersibility of powder particles; 2. Improve durability, such as resistance, light resistance, heat resistance, weather resistance, etc.; 3. Improve particle surface activity; Adding new physical, chemical and mechanical properties and new functions to the surface of the particles to increase the add...
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First, capsule modification Capsule modification is a surface modification method in which a film of a uniform thickness and a film having a certain thickness is coated on the surface of the powder particles. Rong et al. encapsulated TiO2 composite particles coated with Al2O3 and SiO2 with polystyrene, which effectively improved the absorbance and stability of the material. Zhu Liqun and other met...
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