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In the process of powder storage, transportation and use, it is often hoped that the nano-aluminum powder exhibits low activity and is less affected by external environmental factors (temperature, humidity, etc.), so that the product has stable performance for a long time. On the other hand, it is desirable to exhibit high activity in solid rocket propellants to obtain high energy release rate and...
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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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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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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. Mechanical properties Due to the fact that nanomaterials are composed of nanoparticles, and when the particles are at the nanoscale, the strength, hardness, and other mechanical properties of the material will increase as the particle size decreases. It is precisely because of this property of nanomaterials that they can be used for certain packaging that requires strength and hardness, solving...
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1. Application in catalysis Nanomaterials can be used as catalysts, which are used to accelerate certain chemical reactions. Nanomaterials exhibit good surface activity due to their high specific surface area, which is a necessary condition for nanomaterials to become catalysts. In the catalyst industry, nanoparticle catalysts will undoubtedly play an important role. Photocatalyst is an example of...
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Introduction: In recent years, the use of nanotechnology in thermal insulation materials has gained significant attention in the field of material science. Nanoparticles with unique physical and chemical properties have become an attractive alternative to bulk materials for providing thermal insulation. In this article, we will discuss the commonly used nanoparticles as thermal insulation material...
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The measurement deviation of particle size analyzer is influenced by various factors, and the following are some possible factors: The physical properties of the sample: The shape, size, density, and color of the sample can all affect the measurement deviation of the particle size analyzer. Measurement environment: Measuring environmental factors such as temperature, humidity, and pressure may lea...
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Invisible material refers to a material that can reduce or eliminate the reflection of light on the surface of an object, making it invisible or reducing its visibility. The principles of commonly used stealth materials currently include the following: The principle of refractive index control: By utilizing the difference between the refractive index of the material and the refractive index of the...
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Measuring the thickness of the coating layer in nanoparticles requires the use of advanced instruments and techniques. The following are possible measurement methods: Transmission Electron Microscope (TEM): This is a microscope that utilizes high-density electron beams to observe and measure the structure and properties of nanoparticles. For the measurement of the thickness of the coating layer, T...
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Silicon carbide particle reinforced aluminum matrix composite material, abbreviated as SiCp/Al composite material, refers to the addition of silicon carbide particles (SiCp) to aluminum matrix alloys to form a composite material with high strength, high stiffness, and high heat resistance. This composite material has been widely used in fields such as aerospace, shipbuilding, vehicles, electronic ...
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