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Application characteristics of micro-nano copper powder

Micro-nano copper powder has a wide range of applications in many fields due to its large specific surface area, strong surface activity, high melting point, good magnetic properties, electrical and thermal conductivity, and good light absorption, such as lubricants.Catalysts, sensors, heat transfer systems, antibacterial materials, etc. In the application process of micro-nano copper powder, copper powder is generally required to have good crystallization, good crystal form, high purity, no oxidation on the surface, uniform particle size distribution and the like.

1 lubricant
In the process of service, tanks, aircraft and other equipment due to the harsh environment of the engine, the internal temperature is too high, often friction and wear failure, which affects the safety, reliability and service life of the equipment, the development and application of nano-particle lubrication materials This problem can be effectively solved to some extent. The nano copper powder is effectively dispersed in the lubricant by a certain method to form a stable suspension combined with the solid surface to form protection. The layer will have a good anti-friction effect; the nano-particles can be used to fill the scratches, and the wear can be greatly reduced, and the effect is obvious under the conditions of low speed, heavy load and high temperature vibration.

Micro-nano-sized copper powder has a relatively large specific surface area and high surface activity. As a catalyst, it can be used in metallurgy and petrochemical industries to catalyze many organic reactions and exhibit high catalytic activity. The micro-nano copper powder can also catalyze the polymerization of acetylene in the process of making conductive fibers, and partially replace the precious metals platinum and rhodium in the process of exhaust gas treatment of the automobile to complete the conversion of CO to CO2 which pollutes the environment in the exhaust gas.

Conductive materials
The electronic paste applied to the surface of the conductor, the dielectric body and the insulator is an indispensable electrode material in the field of microelectronics. Micro-nano-sized copper powder can be used to prepare such electrode materials, conductive coatings, and conductive composite materials. In large-scale integrated circuits, ultra-thin thick film pastes prepared from nano-copper powder can play an important role. In the electronics industry, micron-sized copper powder can greatly increase board integration.
Due to the excellent electrical conductivity and low cost of copper, micro-nano-sized copper powder can also be used to replace precious metals as the internal electrode and terminal electrode materials of multilayer ceramic capacitors, which effectively reduces the cost of multilayer ceramic capacitors. In addition, metal materials are widely used in the field of printed electronics because of their excellent characteristics such as small particle size and low sintering temperature, and are easy to form conductive inks. The ideal state of the metal conductive ink should be easy to prepare, preserve and inkjet, and should take into account factors such as conductivity and price. Taking into account various factors, nano copper is the metal with the greatest potential to prepare conductive inks that can be widely used. Nano copper conductive ink master.It should be applied to both the printed circuit and the display product. Copper powder has the advantages of good electrical conductivity and low price, and has broad application prospects in the field of conductive materials.

4 Engineering structural materials
Nano copper powder is the basic raw material for preparing nanocrystalline copper. Compared with general coarse-grained copper, nano-copper powder has higher hardness, tensile strength and thermal conductivity. High-density, high-purity nano-copper has excellent superplastic ductility and can be widely used in engineering materials.

Antibacterial materials
In terms of antibacterial properties, Professor Ruparelia compared the antibacterial properties of nano-copper and nano-silver to different strains, and found that for different strains, the antibacterial strength of each species has its own merits. In general, the metal copper exhibits strong antibacterial properties, and has high chemical stability and environmental safety, and is relatively inexpensive. Therefore, the antibacterial properties of the nano copper can be Effective use.

The addition of nano-copper powder to drugs for the treatment of osteoporosis and fracture has a positive effect on bone density, tissue morphology, and bone resistance, which can effectively prevent and treat osteoporosis.
Nano-copper powder is used as an additive in the binder. Due to its good adsorption performance, the bond strength of the binder can be improved, and brittle fracture in the bonding zone can be effectively prevented.
In the process of preparing chemical fiber, the nano copper powder is added into the conductive fiber, and can be made into an electromagnetic radiation-proof fiber product or an electric heating fiber product, or can be composited with rubber, plastic or the like to form a composite conductive material.