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Three Kinds of Conductive Powders

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Three Kinds of Conductive Powders

  • October 17,2014.

There are three kinds of commonly used conductive powder:

1. Metal conductive powder: such as silver powder, copper powder, nickel powder. There is no doubt that silver conductivity is the best, good chemical stability, strong anti-corrosive. But the price is a little expensive, mainly for important military fields. Copper has a low cost, but easily oxidized, conductive instability, need to do special treatment and then could obtain a stable copper-based conductive material. Nickel conductivity is general, but affordable, good chemical stability, excellent magnetic, electromagnetic shielding for electronic devices are particularly effective, than the major drawback is that easy settlement, the deeper the color, the field is limited.

According to Hongwu years of production experience and customer feedback, silver conductive effect is the most ideal. Wherein the low bulk ratios flake silver powder is the main raw material to produce membrane switch, conductive inks, conductive rubber, conductive plastics, conductive ceramics and so on. Flake is the ideal base polymer paste, conductive coatings and electromagnetic shielding conductive paint coatings, etc. The paint which use flake silver powder produced is mobility, anti-settling, large spray area. Flake silver is mainly used for low-temperature polymer paste, conductive inks, conductive coatings. Ultra-fine silver powder is mainly used in high temperature conductor paste and electrode paste. Silver coated copper conductive powder has also concerned by more and more customers.

2. Carbon-based conductive powder: Here I particularly fiery main current of carbon nanotubes.

Carbon nanotubes have unique electrical conductivity, high thermal stability and intrinsic mobility , high crystalline, surface area, pore size can be controlled by the synthesis process, the specific surface area of up to 100% utilization All requirements have ideal super capacitor electrode material. For the electric double layer capacitor, which is to determine the amount of energy stored by the effective specific surface area of the capacitor electrode plate.

Due to SWNTs having the largest surface area and good conductivity, carbon nanotubes prepared by the electrodes, can significantly increase the electrical capacity of the electric double layer capacitor. Preparation of raw materials mixed gas of carbon nanotubes. Researchers used catalytic pyrolysis of propylene and hydrogen, and by adding a binder or by means of high temperature and pressure process for preparing carbon nanotubes solid electrodes, using sulfuric acid electrolyte solution as prepared based on these carbon nanotubes electrodes of supercapacitors.

Hongwu Nano factory sells single-walled carbon nano-tubes, double-wall carbon nanotubes, multi-walled carbon nanotubes (long tube, short tube, hydroxyl carbon tube, carboxyl carbon tubes, highly conductive carbon tubes, nickel-plated carbon nanotubes soluble carbon nanotubes ) of various diameters, various lengths can be supplied.

3. Conductive composite metal oxide powders:

Currently, the sharp increase in demand as the popularity of computers and mobile phones, flat panel LCD's. Nano-ITO is widely used in color TV or PC CRT monitor, a variety of transparent conductive plastic, radiation and electrostatic shielding paint. Nano-ITO in various fields of electronic slurry, various alloys, low emissivity glass high-grade building materials, aerospace, solar energy conversion substrate, environmental protection batteries are also widely used, market prospects.

Also, most cost-effective electromagnetic shielding conductive insulating material nano ATO (Antimony Doped Tin Oxide, referred ATO), appearance is blue powder, has a high temperature, corrosion resistance, good dispersion and so on. Nano ATO is a semiconductor material, compared with the conventional antistatic materials, nano ATO conductive powder has obvious advantages, mainly in good electrical conductivity, light transparency, good weather resistance and stability as well as low aspects of infrared emissivity, is a great potential for development of new multi-functional conductive material, widely used in anti-static coating, anti-static plastic, antistatic fibers.

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