Among metal powder products, because of excellent physical and chemical properties, ultra fine copper powder has a wide range of potential applications. It becomes a basic functional powder material with high added value and larger scale.
It is mainly applied in the production of powder metallurgy, electronic materials, friction materials, oil bearing, electrical contact materials, conductive materials, medicine, diamond products and machinery parts. In high-tech fields of petroleum catalysts, lubricants, conductive decorative coatings and electromagnetic shielding materials, the nano-copper powder is also widely used.
Processing and application technology of copper powder (FCu) has been a major bottleneck for development of the industry. Silty soft copper, grinding processing difficulties, easily oxidized in moist air. Water atomization high cost, low yield, non-uniform particles, and unstable quality. In addition, many newly developed production technology, part of the complex process, the electrical equipment that require high investment, low production yield, high cost, wide particle distribution, environmental pollution, energy consumption, quality instability and other issues, but also did not become a mainstream technology. Newly developed chemical reduction method can only produce nano-copper powder, and its production process is still in the laboratory research stage, secondary pollutants to deal with difficult due to the high cost of raw materials, low production yield and high cost led to products for sale The high price odd enable customers difficult to accept, in particular, is not ideal in many areas of nanoscale copper powder effect. In addition, unlike the ultra-fine copper powder metal copper, and easily oxidized to copper oxide in the air, only the protection of nitrogen, sealed package, but also affect the large-scale promotion and application of ultra-fine copper powder.
Rapid increase in world demand for copper powder at an annual rate of more than 15% total over 100,000 tons in 2008, this calculation, each year there are more than billions of dollars in market supply and demand gap, which no doubt for investors in terms of very attractive.
Most of Chinese metal powder enterprises are large enterprises with great strength. There are many companies and funds involved in this industry. Copper powder production scale of living in the world, but in the control technology with the United States, Britain, Russia and other advanced countries, there is a larger gap, almost all mechanical and physical production, the product structure is relatively simple, electrolytic copper powder and water mist of copper powder accounted for 95%. Ultra-fine copper nanoparticles account a small proportion regardless of application and popularization.
Sub-micron ultra-fine copper powder in addition has good electrical conductivity, thermal conductivity, corrosion resistance, decorative, sterilization and non-magnetic characteristics of the copper, it has many of the characteristics of nanomaterials, that is, the small size effect, surface and interface effects, quantum size effect and the quantum tunneling effect, in the field of mechanical, electrical, magnetic, chemical, paint and other many new properties and uses, and thus become a new species of the copper powder field with the potential for greater value and market demand. Therefore, ultra-fine copper powder is not simple metal materials can be used as the basis of the functional powder materials. It is a new bright spot for development of copper powder industry.
The ultra-fine copper powder has special purposes, great potential in high-tech and high value-added products. Many foreign enterprises are concerned about the development and application of the product. For the large profits, the original copper powder companies also continue to increase technical inputs and introduce advanced foreign technology to enhance product quality. But the core technology is uneasy to bring. The only way to achieve the development is to make technological innovation.
Source:http://www.mhcmp.com
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