Copper nanopowder has a spherical shape, uniform particle size, large crystallinity, high product purity, high surface activity, easy dispersion and industrial application.
Ultrafine particulate material refers to a powder having a particle size between 1 and 100 nm, also known as a nanoparticulate material. Nanoparticles have small size effects, large specific surface and macroscopic quantum tunneling effects, and thus nanofine powders show many excellent properties that are not found in micron-sized powders. Nano-copper powder has a large specific surface and a large number of surface active centers, and is an excellent catalyst in metallurgy and petrochemical industry.
In the process of automobile exhaust purification, nano copper powder can be used as a catalyst to partially replace the noble metals platinum and rhodium, convert toxic carbon monoxide into carbon dioxide, and convert nitric oxide into nitrogen dioxide.
With the development of the electronics industry, ultra-thin thick film paste prepared from nano-copper powder will play an important role in large-scale integrated circuits, and the price is lower than that of precious metal silver powder and palladium powder, and has broad application prospects.
In the hydrogenation and dehydrogenation of high molecular polymers, nano-copper powder catalysts have extremely high activity and selectivity. Nano-copper powder is a very effective catalyst in the process of acetylene polymerization used to make conductive fibers.
Ultrafine copper powder is an indispensable basic raw material for nano copper with good electrical conductivity and high strength. Due to its excellent electrical properties, it is widely used in conductive adhesives, conductive coatings and electrode materials. In recent years, it has been found that it can be used to make catalysts, lubricant additives, and even for the treatment of osteoporosis and fractures.
The development of nano-copper powder is a key technology that may bring revolutionary changes in copper and its alloys. It has important theoretical significance and practical value. The research of nano copper powder is still in the development stage, and its wide use will make the research of nano copper powder have better market value and market prospect.
The reducing agents currently used include formaldehyde, ascorbic acid, sodium hypophosphite, sodium borohydride, hydrazine hydrate, etc., but some of these reducing agents are highly toxic, some have poor reducing ability, some are too expensive, and some reaction processes It is easy to introduce other impurities. Therefore, looking for a more suitable reducing agent or composite reducing agent, researching a more ideal reaction system becomes an important topic in the preparation of nano copper powder. In addition, since the nano-copper powder has a small particle size, a large surface activity, easy agglomeration, and the surface of the powder is easily oxidized to Cu20, how to improve the dispersibility of the nano-copper powder and how to prevent the copper powder from being oxidized is also an important research direction.
At present, industrial production of ultra-fine materials such as: freeze drying method, precipitation conversion method, phase synthesis method, ultrasonic method, hydrolysis method, mechanical alloying technology, uniform precipitation method, reduction and protection method. Some of the above methods require huge equipment, some are complicated, some have high preparation costs, and some have low qualification rates and low yields. The liquid phase chemical reduction method for preparing nano copper powder has its unique advantages, such as simple equipment, short art flow, small investment, large output, low cost and easy industrial production.
Our company can supply 99.9% purity 50nm, 100nm, 1-2um particle copper powder for customers to do research, please feel free to ask us a quote.
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