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Application of copper powder in every field

2018-08-31 16:07 View:
Application of Copper Powder in Conductive Coatings
Conductive coatings are a kind of functional coating that has been rapidly developed along with the advancement of science and technology. It can be widely used in electronics, construction, aviation, chemical, printing, military and other fields. Such as the conductive connection of integrated circuit components, electromagnetic shielding materials, conductive or antistatic coatings. Especially in electronic equipment, with the continuous development and advancement of the electronics industry, various electronic equipments have been widely used, and electromagnetic interference is affecting people's lives. Applying a layer of conductive coating on the surface of electronic products can prevent electromagnetic leakage and resist external electromagnetic interference.
At present, the fillers of conductive coatings mainly include carbon, silver, copper, nickel and composite systems. As a conductive filler in electromagnetic wave shielding coatings, copper powder has high electrical conductivity, relatively low price, easy availability of materials, and there is no advantage that silver powder may cause "silver migration" in the coating to affect coating performance. However, copper is easily oxidized, and its oxide conductivity is low, resulting in a decrease in the electrical conductivity of the coating. Therefore, research and development of low-cost, metal-resistant copper powder composite conductive coatings have received increasing attention.
Application of copper powder on lubricant
Ultrafine copper powder is dispersed in various lubricating oils in a suitable manner to form a stable suspension, which can be an excellent lubricant, which can greatly reduce wear and friction, especially in heavy load, low speed and high temperature vibration. In the case of a more significant effect, the protection of materials and equipment. Wang Hongtao and others from the Open Lubrication Laboratory of Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, and others used the RFT-III reciprocating friction and wear tester to test the friction and wear properties of composites formed by Cu powder (200 mesh) and nano-Cu powder filled with polyoxymethylene. The wear mechanism was studied by electron microscopy, XPS and AES. The study found that adding a certain amount of Cu powder (200 mesh) and nano-Cu powder can reduce the wear of polyoxymethylene, but the effect of adding nano-Cu powder is better.
Application of copper powder on catalyst
The ultrafine copper powder has fine and uniform particles and a large surface activity, and this characteristic can be utilized to produce a highly efficient catalyst. For example, in the process of automobile exhaust gas purification, ultrafine copper powder can be used as a catalyst to partially replace precious metals such as platinum and rhodium, convert toxic carbon monoxide into carbon dioxide, convert nitrogen monoxide into nitrogen dioxide, and can also be used for carbon dioxide and The catalyst in the reaction process such as hydrogen synthesis of methanol has high catalytic activity. The nano copper particles catalyzed the polymerization of acetylene and achieved satisfactory results.
In other applications
Nano-copper powder can be used to prepare nano-copper materials. The obtained copper materials have good ductility, and the strength and plasticity are also obviously improved, which has important value for material processing and micro-machine manufacturing. In addition, due to the low melting point of copper, it can also be used in the aerospace field as a rocket nozzle. Secondly, ultrafine copper powder can even be used to treat osteoporosis, fractures and the like.

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