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The unique characteristics of nano-particles of elements

 

Nanometer (nm) and meters, micrometers and other units, is a unit of length, and a nanometer is equal to ten–nine meters, about an order of magnitude than chemical bonds grew up. Nanotechnology is the study by between 0.1 and 100 nm in size the system motion laws of matter and interactions as well as possible technical problems in the practical application of science and technology. Can be derived from nano-electronics, mechanical, biological, materials processing and so on.
Nano Element Particles of material refers to at least three dimensional spatial scale of one-dimensional nanoscale materials it is made between the size of atoms, molecules and the macroscopic system of next-generation materials composed of nanoparticles. Due to its small scale units, interface takes up a fair amount of ingredients. Therefore, nano-materials with a variety of features, which lead to different system of nano-particles from mostly large chunks of the macro-system of many of the special nature of the material. Nano system makes people awareness natural and entered a new of levels, it is contact Atomic, and molecular and macro system of link, is people past never exploration had of new field, actually by nano particles composition of material to macro system evolution process in the, in structure Shang ordered degrees of changes, in State Shang of non-balance nature, makes system of nature produced is big of difference, on Nano material of research will makes people from micro to macro of transition has more in-depth of awareness. Characteristics of nanomaterials?
When the particle size down to the nanoscale, will lead to sound, light, electricity, magnetism, and thermal performance of new features. For example: is a wide research of II-VISemiconductor cadmium sulfide, the absorption band edge and luminescence spectra of peak position will significantly blue shift as the grain size decreases. According to this principle, can control the grain size to get different energy gap in cadmium sulfide, which greatly enriched material for content and is expected to get new use. We know the type of material is limited, micro-and nano-CDs are made of cadmium and sulfur, but by controlling production, band gap and luminescent properties of different materials can be obtained. In other words, through nano-technology is a new material. Nanoparticles often have a great deal of surface area per gram surface area of the solid can reach hundreds of thousands of square meters, which makes them available as a highly active adsorbents and catalysts, hydrogen storage, organic synthesis and has important applications in areas such as environmental protection. Nano-materials, we can use a “lighter, higher, stronger” it summed up in six words. “Lighter” refers to the aid of nano-materials and technologies, we can prepare a smaller performance even better devices, reducing the volume of devices to make it lighter. Need three houses to the first computer store, and with micron semiconductor manufacturing technology, miniaturization is realized, and popularity of the computer. In terms of energy and resource use, this “small” benefits were all very stunning. “Higher” refers to the nanostructured materials is expected to have a higher optical, electrical, magnetic and thermal properties. “Stronger” refers to the mechanical properties of nano-materials have a stronger (such as strength and toughness), Nano ceramics, Nano is expected to solve the brittleness problem of ceramic, and may exhibit similar to the materials such as metal-plastic
Nano-effects means that nano-materials with traditional materials do not have the exotic or unusual physical, chemical characteristics, such as conductive copper to a Nano-grade boundaries are not conductive, insulating silicon dioxide, crystals, and began conducting at a Nano line. Nano-materials with small particle size, this is due to large specific surface area, the percentage of high surface energy and surface features, as well as its three major effects: surface effect, small size and macroscopic quantum tunneling effect. Meaning of nanotechnology–1. So-called nanotechnology refers to the 0.1~100 in the nano-scale, study the motion of electrons, atoms and molecules and characteristics of a new technology. Scientists studying the matter of process, found at the nano-scale several, dozens of isolated Atom or molecule, show many significant new features, and take advantage of these features made with a specific device technology, called nanotechnology … Nanotechnology and microelectronics is the main difference between: is nanotechnology research to control individual atoms and molecules to achieve device–specific features, is the volatility of electronic working; is controlled primarily through electronic and microelectronic technology group to implement its functionality is the use of electronic particle. Purpose of the research and development of nanotechnology, is to achieve effective control of the entire microcosm … Nanotechnology is a cross with very strong multidisciplinary research covering large areas of modern science and technology.
Hongwu International Group Ltd, with HWNANO brand, is a high-tech enterprise focusing on manufacturing, research, development and processing of nanoparticles,nanopowders, nanowires, oxides. We have our own nano powders production base,located in Xuzhou, Jiangsu, mainly supplying silver nanoparticles, copper nanoparticles, silicon carbide whisker/powders, carbon nanotubes, graphene, silicon carbide nanopowders, silver nanopowders, silver nanowires and other nano materials with small quantity for researchers and bulk order for industry groups.
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Antimony Doped Tin Oxide market demand

 

With the rapid economic development, electronics, chemicals, textiles, machine room, static electricity problems in packaging and other industries have attracted wide attention. Conductive filler can eliminate the matrix materials, such as plastics, coatings, chemical fiber, rubber, ceramic tile is the main method of static electricity, by on the principle of conductive filler in the insulating substrate forming a conductive network charge to reach the matrix release purposes. Commonly used include permanently conductive filler metal powder, carbon, oxides, and so on. To reduce costs or improve existing in conductive fillers fillers chroma can be chemically heterogeneous nucleation theory in some white powder coating formation of Antimony Doped Tin Oxide composite conductive powder. Due to the conductive path formed in the substrate is a prerequisite for eliminating static electricity, so using high aspect ratio materials, such as conductive carbon nanotubes, carbon fiber, conductive metal fibers (stainless, nickel fiber, etc), needle-shaped titanium dioxide coated ATO, can reduce the amount of conductive material, thereby reducing production costs.

Antimony Doped Tin Oxide coating should first consider its dispersion in the paint, though Antimony Doped Tin Oxide compared to have better dispersion of metal powders, but due to its high surface energy of nanometer powder made prevailing in its powder agglomeration, increase of the dispersion degree of difficulty. This years of slow progress in the application of nano-ATO conductive powder are the main reasons. Of nanometer ATO powder by dispersing and anti-static application data show that, with the decrease of slurry particle size of nano-ATO particles in, that are required to achieve the same anti-static effect of nanometer ATO powder dosage reduced, reduce operating costs, while mechanical and optical properties of materials have also been improved.

Its good insulating properties, is widely used in the coatings, chemical fibre, polymer film and other fields. In addition as a conductive materials, dispersion, activity, thermoplastic-resistance, abrasion resistance, security with other conductive material (such as graphite, surfactants, such as metal powders), incomparable advantages. Is used in optoelectronic display, transparent electrode, solar cell and LCD, catalytic, and so on.

Antimony Doped Tin Oxide powders and conductive material offers significant advantages over traditional, in transparent, conductive, anti-static, infrared blocking and other fields, has broad application prospects. But in electro-optical mechanism of Antimony Doped Tin Oxide powders, Nano-ATO powder application and secondary development of nanometer ATO powders and other aspects to be further studied.

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Aluminum Oxide Nanopowder

 

Alumina is a diverse class of metallic oxides, main polymorphic forms include the most common are type a and y, crystalline transition mainly depends on the temperature. Aluminum hydroxide or hydrated aluminium oxide is heated to 800 degrees Celsius converted into y-alumina and 1200 degrees Celsius converted into a-alumina. Structures and properties of alumina-special features to make it in the electronics, chemical, aerospace and other fields has been widely used. With the development of high technology and society more and more attention on new materials, domestic and foreign workers to pay great attention to the development and application of new materials, all kinds of material with special functionality to get people’s attention. Among them, the micronization of substances considered to be materials development research foundation. Superfine powder usually refers to the scale the so-called molecular, Atomic and macroscopic objects, the granularity (1-100) particles in the nm range.

High pure Super fine Aluminum Oxide Nanopowder is purity in 99.99% above of super micro-powder body material, is 21st century materials in the production maximum, and output Supreme, and uses most wide of tip material is one of, high pure alumina powder body due to its purity high, grain diameter small, displayed out has general material by not has of light, and electric, and magnetic, and heat and mechanical characteristics, thus it as a new function material widely application Yu optical, and chemical and the special ceramic, multiple field. Overseas studies on Nano-alumina work carried out earlier, the technology has advanced. Following is some has representative of research results: in gas phase method in the, United States of Chen y j with gas phase rule prepared out grain diameter for of no reunion alumina nano particles; with gas phase hot solution to three methyl aluminum Al (CH3) 3 and N20 for material, joined C2H4 as reaction sensitive of agent, used C02 laser (C2H4 in C02 laser launches wavelength at has resonance absorption) heating for reaction, Then 1200-1400 deg heat successfully synthesizes A1203 particle diameter of 15-20nm; Japan patent by evaporation-condensation method, alumina (purity of 99.99%) as the evaporation source and put them in a pressure up to 0. 01 Pa in a vacuum, into 02,CO or C02, keeping pressure at 15Pa alumina ceramics using C02 laser irradiation makes it evaporate, in alumina in gas evaporation cools rapidly to get ultra high-purity alumina. In liquid phase method in the, Felde b with sol-gel glue method, to ISO butanol aluminum for precursor body, joined acetyl acetone and ammonium nitrate, by hydrolysis, and sank of formed gel glue, again by dry, and forged burn get grain diameter for 50nm of Alpha-A1203 particles; France of Eponthieu using nitric acid aluminum, and xylene, and tween80 composition micro emulsion system, business got 40-50nm of alumina particles. Study of nano-alumina in China is from the beginning of the 90 ‘s, which was mainly concentrated in the Chinese Academy of Sciences and universities during 10 years in 1990-2000, China to break Western embargo on China. Has set up a variety of physical and chemical method for preparation of nano-materials. Research on Nano-Alumina was also a certain degree of progress.

At present, the preparation of Aluminum Oxide Nanopowder mainly stay at the trial stage, and conducted some exploration of the industrialization level of production, but most of the preparation methods of nano-alumina wide particle size distribution, and poor preparation process is repeated. There are a lot of basic work requires a lot of manpower and resources to complete.

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Nano silver antibacterial is widely used

Nano-Silver as a special form of the metal silver, refers to the particle size of powders of 1~100nm metallic silver granules. Since the particles are extremely small and large surface area, so that it will have significant surface effects, quantum size effect and the quantum tunneling effect, which makes silver with superior permeability activity and its bactericidal effect is hundreds of times times the ordinary silver. In addition, due to the nano-scale electronic properties of metallic silver, it can be used with sparse radicals on bacterial proteins, amino group electron withdrawing groups formed, such as ligand, which further enhances the antibacterial effect. Is a new class of Nano Silver antimicrobial agent, has a strong bacteriostatic and bactericidal action and a broad spectrum of antibacterial activity, and inorganic antibacterial effect of antibacterial agent is unable to compare with traditional, non–resistance, and high security. With the serious of antibiotic bacterial resistance, study and application of Nano-Silver disinfect areas increasingly wide attention.
Humans found Silver Nanoparticles Antimicrobial for a long time, as early as in ancient times, useful silver food storage to prevent bacteria growth record. With the progress of science and technology, it was discovered that silver is a safe and broad spectrum bactericidal materials apply it gradually spread. Now clinical Shang people has widely using sulfa pyrimidine silver, and fluoride piperazine acid silver, and zinc silver breast cream, and sulfa pyrimidine silver collagen protein film, and irradiation fluoride silver pigskin, treatment Burns burns to prevent green pus bacteria, bacteria of reproduction, nitric acid silver water solution as eye anti-inflammatory, and Silver Mercury alloy as dental material and the containing silver water solution treatment toothache, and glue State silver in gynecological lotion in the are application widely. Also available on a daily basis in activated carbon containing silver or silver woven filters purify drinking water, and so on.
Silver Nanoparticles principle. Nano Silver due to its structure unit size between macro material and micro Atomic and molecular Zhijian, performance out special of surface effect, and small size effect, and quantum size effect and macro quantum tunnel effect, can easily to entered disease original body; Nano Silver particles size small, surface by accounted for of volume percentage big, surface of key State and electronic State and particles internal different, surface Atomic distribution bit not congruent led to surface of activity location increased, has has as antibacterial agent of basic conditions; has is strong penetrating force, Have full access to and attack pathogens, thereby fostering stronger biological effects, high security, and antibacterial wide advantages of long continuous sterilization time. Antibacterial properties of silver nanoparticles in particular, pathogenic bacteria, cocci, bacteria killing effect of silver ion is much larger than the traditional disinfectant. Silver nano-particles can kill bacteria, fungi, Mycoplasma, chlamydia, and other disease-causing organisms.
Nano Silver antibacterial agent of role main including 3 a links and pathogens metabolism enzyme in the of sh base combines, makes enzyme lost live and exposed of bacteria cell wall occurred peptide poly sugar reaction, formed reversible composite real, makes bacteria cannot will oxygen and energy trans-into cell and pathogenic microbial in the of DNA combines, led to DNA structure degeneration, inhibition DNA copy. In addition, the Nano-Silver and non-antibiotic antimicrobial agent, of silver ions do not develop resistance in bacteria, is a long-acting antibiotic agents.
Application of Nano-Silver. Nano-materials because of their size decreases, surface area, surface energy and surface tension are greatly increased, with volume effect and quantum size effect, make it light, heat, electric, magnetic, mechanical and chemical properties is quite different from the traditional characteristics of materials. Silver nano-particles with UV resistance, absorption of visible and infrared radiation, high strength and toughness, good conductivity and shielding effects, antimicrobial, antiseptic, deodorant, and other outstanding features. At present, Nano-Silver anti-bacterial nonwovens material of a variety of medical, health, household and industrial use of antibacterial products already listed.