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The gold we usually see is golden yellow, but the nano gold powder is pink; the iron can not be ignited at normal temperature, but the nano iron powder can ignite. Why did these metals become tiny nanoparticles and the properties changed completely? Now let's take a closer look at the skills of nano gold particles and see how they have wonderful functions. 1.Smart microcircuit Behind the LCD scree...
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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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The application of nanomaterials in surface engineering is mostly to stabilize the nanoparticle dispersion in the organic medium. For example, the workpiece is ground and the antifriction material is dispersed in the lubricating oil in an appropriate manner. The ultrafine polishing liquid is nanometer SiO2, nanometer. Lubricants for nanoparticles such as Al2O3, nano-MoS2, nano-Cr2o3, and nano-diam...
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Titanium is a chemical element, chemical symbol Ti, atomic number 22, located in the fourth cycle of the chemical periodic table, group IVB. It is a silver-white transition metal characterized by light weight, high strength, metallic luster and resistance to wet chlorine gas. The most common compound of titanium is titanium dioxide, which can be used to make white pigments. In the past, people use...
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Nano-zero-valent iron (nZVI) nanopowder is an iron particle with a particle size between 1 and 100 nm. Its specific surface area and reactivity are much larger than ordinary iron filings and iron powder. It can be directly injected into the heavily polluted area of the water environment to form an efficient in-situ reaction zone, which can control water pollution flexibly, efficiently and at low c...
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Although carbon nanotubes have unique mechanical, electrical, and thermal properties, due to the strong van der Waals force and π-π interaction between carbon nanotubes, they are also easily agglomerated, and carbon nanotubes are modified or function Transformation is the main means to solve these problems. According to the existing research results, the functional modification of carbon nanotubes...
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The granular shape of titanium powder includes spherical, polygonal, sponge, and flake shapes. The granular shape is related to the method of preparing titanium powder. The requirements for titanium powder generally include three aspects, namely purity, particle size and granular shape. Titanium powder is divided into 4 grades. The size of 1000-50um is coarse powder, 50-10um is fine powder, 10-0.u...
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Iron nanopowder is black powder with a purity of over 99.9%, and can be divided into spherical and flake. Spherical nano iron powder Particle size 20-50nm, 50-70nm, 80-100nm, 100-200nm Application 1. Absorbing materials Metal nano-powders have a special absorption effect on electromagnetic waves. Iron, cobalt, zinc oxide powder and carbon-coated metal powder can be used as high-performance millime...
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What exactly is a thermal battery? Thermal batteries are also called thermally activated reserve batteries. The single cell of the thermal battery is composed of a positive electrode (FeS iron-sulfur alloy), an electrolyte, and a heating sheet (iron powder). The main body of the heating sheet is iron powder, and its conductivity is relatively high. FeS iron sulfur is a semiconductor material, whic...
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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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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 field of biomedicine is a brand-new research field formed by integrating the methods and theories of medicine, biology and other related disciplines. Its research content includes biomedicine, clinical applied chemistry, cytology and immunology. With the rapid development of technology, cutting-edge research and inventions in many popular fields play an important role in the field of biomedici...
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