Overview
Electrolytic copper particles are high-purity copper granules produced through an electrolytic refining process, which removes impurities to achieve copper content exceeding 99.9%. These particles are valued for their excellent electrical and thermal conductivity, making them indispensable in industries requiring precise and reliable performance. Electrolytic copper is distinguished from other forms of copper by its high purity and uniform particle size, which are critical for applications in electronics and precision engineering. The electrolytic process ensures minimal contamination, resulting in particles that meet stringent industrial standards.
Physical and Chemical Properties
Electrolytic copper particles exhibit a distinctive reddish-brown color and metallic luster. Their high density (8.96 g/cm³) and melting point (1085°C) make them suitable for high-temperature applications. The particles are insoluble in water but react with acids, particularly nitric acid, forming copper salts. Key properties include exceptional electrical conductivity (59.6×10⁶ S/m) and thermal conductivity (401 W/m·K), which are close to the theoretical maximum for pure copper. These properties are largely unaffected by the particle size, provided the purity is maintained.
Main Applications
The primary use of electrolytic copper particles is in the electronics industry, where they serve as raw material for printed circuit boards (PCBs), connectors, and semiconductor packaging. Their high conductivity ensures efficient signal transmission and minimal energy loss. In metallurgy, these particles are used as additives to improve the properties of alloys, such as brass and bronze. They also act as catalysts in chemical reactions, particularly in organic synthesis and water treatment processes.
Safety and Storage
While copper particles are generally safe to handle, prolonged exposure to dust can cause respiratory irritation. It is advisable to use personal protective equipment (PPE) such as masks and gloves in industrial settings. Copper is also a heavy metal, so environmental regulations must be followed during disposal. Storage should be in airtight containers to prevent oxidation and moisture absorption. The particles should be kept away from strong oxidizing agents and acids to avoid chemical reactions that could compromise their purity.
B2B Procurement Guide
When sourcing electrolytic copper particles, prioritize suppliers who provide certified material test reports (MTRs) detailing purity, particle size distribution, and traceability. Purity levels of 99.9% or higher are recommended for most industrial applications. Consider ordering in bulk to reduce costs, but ensure proper storage facilities are available to maintain product integrity. Prices fluctuate based on global copper markets, so locking in contracts during stable periods can be advantageous.
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