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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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In our daily life, we often use various forms of magnets, and many people with magnetic liquids have definitely not seen them. Magnetic fluid is a kind of magical liquid. In short, it is a fluid-like substance with magnetism. It is covered with spikes and can change shape with magnetism at will, just like magic. Magnetic fluid is a colloidal liquid composed of magnetic solid particles, carrier liq...
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First. Principle of magnetic fluid sealing Magnetic fluid has both liquid fluidity and solid magnetic properties. The magnetic fluid sealing technology is realized by utilizing the responsiveness of the magnetic liquid to the magnetic field. When the magnetic fluid is injected into the gap of the magnetic circuit composed of high-performance permanent magnets, pole shoes with good permeability, an...
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Nano titanium dioxide powder for cosmetics has many excellent properties, such as safe and non-toxic, can shield ultraviolet rays, high decolorization power (or coloring power), strong hiding power or transparency, good hue, wide color spectrum, etc. The favor of the artist has become the most important and the largest amount of inorganic additives in high-end cosmetics. The following will introdu...
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Nano oxides have many unique properties and have been widely used in textile fields such as antibacterial, deodorant, and ultraviolet protection. Similarly, nano-oxides have a positive effect on anti-wrinkle finishing. Nano-titanium dioxide or nano-silica is added to the traditional system to form nano-oxide anti-wrinkle finishing liquid through high-speed shearing, so that the fabric has anti-wri...
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Nanotechnology has been successfully applied in China's medical field. A group in Nanjing used nano silver technology to develop and produce a medical dressing, a long-acting broad-spectrum antibacterial cotton. The production principle of this antibacterial cotton is to make silver into 20 nanometer ultrafine particles through nanotechnology, and then attach it to cotton fabric. Silver has the ef...
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Nano tungsten oxide is a powder metallurgy raw material for producing cemented carbide and tungsten products. Tungsten carbide, cemented carbide, super-hard molds, tungsten bars, tungsten wires, etc. are all manufactured by powder metallurgy. They can also be used for x-ray screens and fireproof fabrics, as well as ceramic colorants and analytical reagents. In the W-O system, there are WO3, WO2.9,...
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What is a thermally conductive gel? Thermally conductive gel: It has some advantages of thermally conductive silicone sheet and thermally conductive silicone grease, while making up for some of the weaknesses of the two; strong plasticity, can fill uneven interfaces. What are the advantages of thermal gel? 1. Efficient thermal conductivity; 2. Low compressive force application and low stress; 3. H...
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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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By mixing a small amount of nano silica into concrete, ultra-high strength and ultra-high durability concrete can be easily prepared. At present, a large number of research results have proved that nano SiO2 has a good modification effect on cement. The cement paste doped with nano silica has reduced fluidity, shortened setting time, and significantly improved early strength. Nano-doped nano silic...
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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 role of metals aluminum in refractory materials: Plastic phase forming: The metal lattice will slip under the action of stress, which has plastic characteristics. Compared with the hard inorganic material particles, it will play the plastic forming characteristics during the forming process, so that the same The density of the green body prepared under the forming pressure is higher than that ...
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