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The application in plastics utilizes the high strength, high fluidity and small size effect of silica, which can improve the compactness, smoothness and wear resistance of plastic products. Through appropriate surface modification, the purpose of strengthening and toughening plastics can be achieved at the same time. By adding fumed silica into polyethylene, through a special method, the silica ca...
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Nano alumina has been widely used in the field of coatings due to its high hardness, high strength, good thermal stability, wear resistance, thermal conductivity, insulation and other excellent properties. Adding nano-alumina powder and nano-alumina dispersion to the coating improves the wear resistance of the coating and has a certain self-repairing ability, and at the same time increases the har...
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Due to the extremely strong surface activity of nano TiO2, it is easy to form large-sized agglomerates, which affects the practical application. Therefore, it can be modified from the aspects of improving the photocatalytic degradation efficiency of TiO2, changing the dielectric constant and surface activity of TiO2. There are two ways of combining surfactants with TiO2: one is physical adsorption...
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Nano zinc oxide is a fine inorganic material with a particle size between 1nm and 100nm. Zinc oxide usually exists in the form of wurtzite, with four oxygen atoms surrounding the zinc ion, forming a thermodynamically stable tetrahedral structure. Due to the changes in the crystal structure and surface electronic structure of nano-zinc oxide, nano-zinc oxide has the characteristics of surface effec...
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Dispersant is a kind of surfactant that has two opposite properties of lipophilicity and hydrophilicity in the molecule. It can increase the compatibility of oily and aqueous components in the same system, and also prevent the sedimentation and agglomeration of particles, forming an amphiphilic reagent required for stable suspensions. Dispersant, also known as wetting dispersant, has many kinds. A...
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The formation of a stable dispersion system, in addition to using electrostatic repulsion, that is, the negative charges adsorbed on the surface of the particles repel each other, to prevent the adsorption/aggregation between particles and finally form large particles and stratify/settlement, but also use. The theory of the steric hindrance effect, whereby particles that have adsorbed negative cha...
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Nano technology spans multiple disciplines, involving a wide range of faces, and has had huge impacts in many areas and even the entire social life, such as in the fields of physics, chemistry, material science, biology, medicine, engineering, and computer simulation. Nano particles appeared in the 1980s, that is, pink particles with a particle size of less than 100nm. Because of the small nanopar...
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The preparation methods of CNTS loaded metal nanoparticles are mainly physical preparation and chemical preparation methods. The most commonly used is chemical preparation method. The chemical preparation method is generally uniformly loaded with metal nanoparticles on the carrier CNTS. The general process of chemical preparation is that the metal front drive is restored to atoms, and the metal at...
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The polymer film material has good processing and electrical insulation, and is widely used in various fields of industrial production and daily life. However, due to its high surface resistance, static electricity is easy to accumulate during use. When static electricity accumulates to a certain degree It will cause static vacuums, electric shock, and even adverse consequences such as fire and ex...
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In pigments, nano sized iron oxide is also known as transparent iron oxide (through iron) . The so-called transparency, not specifically refers to the particles themselves macroscopically transparent, but refers to the pigment particles dispersed in the organic phase to make a film (or oil film) , when the light irradiation on the film, if the original direction does not change basically through t...
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1.The application of nanometer iron oxide in ink material, The transparent iron yellow can be used for the coating of the outside of the can, the nanometer iron oxide red ink is red-gold color, it is especially suitable for the inside of the can, and the transparent iron red can resist the high temperature of 300 ° C, is a rare pigment in ink treasures. In order to improve the printing quality of ...
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1. In the application of nano ferric oxide in magnetic materials and magnetic recording materials The size of magnetic particles as a magnetic recording unit must meet the following requirements: the length of particles should be smaller than the recording wavelength; The width of the particles (including possible lengths) should be much smaller than the recording depth; there should be as many ma...
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