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Preparation of kerosene-based magnetic fluid of Fe3O4 In this experiment, analytically pure ferric chloride, ferric chloride and ammonia (NH3 content 25%) were used to prepare magnetic particles of Fe3O4 according to chemical coprecipitation method. The chemical reaction equation is 2FeCl3·6H2O+FeCl2·4H2O+8NH3·H2O= Fe3O4+8NH4Cl+24H2O (1) In the dissolution process, FeCl2·4H2O blue-green crystals a...
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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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Alumina powder can be used in abrasives, ceramics, medicine, cosmetics, aerospace, thermal media, etc. Today the editor will talk about a very small class of alumina applications: thermally conductive alumina powder for electronic potting adhesives in thermally conductive media. First of all, electronic encapsulants are mainly divided into three categories: silicone encapsulants, epoxy encapsulant...
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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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In order to explore the ultraviolet protection performance of nanofibers, the ultraviolet shielding nano titanium dioxide (TiO2) was added to the polyacrylonitrile (PAN) solution, and pure PAN and composite PAN/TiO2 nanofiber membranes were prepared. Scanning electron microscopy and UV transmittance analysis were used. The instrument analyzed the microscopic morphology and UV protection performanc...
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Advantages of nano ferroferric oxide black magnetic powder: 1. Nano Iron oxide black magnetic powder has the characteristics of high permeability, low coercivity and low remanence; 2. Nano Fe3O4 black magnetic powder has good dispersibility, is not easy to agglomerate, and has strong magnetism; 3. One-dimensional nano ferroferric oxide black magnetic powder has good magnetic permeability and good ...
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(1) Black nano Fe3O4 iron oxide: Size: 30nm, PH: 8-10, SSA:4-5g/cm3 Black nano ferroferric oxide is a mixed valence oxide of iron with a melting point of 1597°C. It is insoluble in water but soluble in acid solutions. Vk-EF01 has anti-corrosion effect. For example, the bluing of steel parts (also known as blue-burning and baking blue) is to use the oxidation effect of alkaline oxidizing solution t...
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Car intake manifold solution 1. The accuracy is +/-0.1mm, and the layer thickness of 0.02 fully meets the requirements of dimensional design verification 2. Using PA3200 nylon mixed glass fiber material, it has high strength, high toughness, and high temperature resistance, which fully meets the requirements of functional design verification 3. All parts are produced and printed at one time, no sp...
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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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Aerospace super alloy parts processing solution 1. With traditional craftsmanship in aviation blade manufacturing and processing problems, metal 3D printing technology can solve the problem ingeniously 2. At the same time, under the premise of ensuring the function, the primary requirement of the lightweight aerospace industry for parts, metal 3D printing technology can easily realize the lightwei...
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When using copper powder as the conductive filler to prepare the conductive ink, what is the appropriate amount of copper powder added, and what specific effect does the added amount of copper powder have on the conductive performance of the conductive ink. Printed electronics is an advanced electronics manufacturing technology that has emerged and popularized in recent years. Conductive ink is a ...
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Density is a physical quantity that reflects the properties of matter. The properties of matter refer to a property that matter itself has but can be distinguished from each other. People often feel that substances with high density are "heavy" and substances with low density are "lighter". "Heavy" and "light" essentially refer to the magnitude of density. Density is a property of matter, it does ...
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