Granular Copper Powder
Overview
Granular Copper Powder is a metallic powder composed of fine copper particles, widely used in industrial applications due to its excellent conductivity and malleability. It is produced through processes such as electrolysis, atomization, or chemical reduction, resulting in varying particle sizes and shapes. This powder is essential in sectors like electronics, where it is used in conductive pastes and printed circuits, as well as in metallurgy for sintering components. Its versatility and performance make it a critical material in advanced manufacturing and chemical processes.
Physical and Chemical Properties
Granular Copper Powder exhibits high electrical (5.96×10⁷ S/m) and thermal conductivity (401 W/m·K), making it ideal for applications requiring efficient energy transfer. The powder's reddish-brown color and granular form are distinctive, with particle sizes typically ranging from 1 to 100 micrometers. Chemically, copper is relatively stable but can oxidize in moist environments, forming a protective patina. It reacts with acids, particularly nitric acid, which is often used in purification processes. The powder's insolubility in water but solubility in strong acids is a key consideration for handling and application.
Main Applications
In powder metallurgy, Granular Copper Powder is compacted and sintered to produce complex parts with high precision, such as gears and bearings. Its use in conductive inks and pastes is vital for printed electronics, including flexible circuits and RFID tags. The chemical industry employs copper powder as a catalyst in reactions like the synthesis of methanol or the oxidation of organic compounds. Additionally, its antimicrobial properties make it suitable for antifouling coatings in marine and medical applications, reducing bacterial growth on surfaces.
Safety and Storage
Handling Granular Copper Powder requires precautions to avoid inhalation or skin contact, which can cause irritation. Dust control measures, such as local exhaust ventilation, are recommended in workplaces. PPE, including gloves and respirators, should be used. Storage conditions are critical to prevent oxidation and moisture absorption. The powder should be kept in sealed containers in a dry, cool environment, away from incompatible substances like strong oxidizers. Proper labeling and handling procedures ensure long-term stability and safety.
B2B Procurement Guide
When procuring Granular Copper Powder, buyers should prioritize suppliers with certifications like ISO 9001 to ensure quality consistency. Key specifications include purity (typically 99.5%-99.9%), particle size distribution, and flow characteristics, which affect performance in end-use applications. Bulk purchases often benefit from volume discounts, but testing samples for compliance with technical requirements is advisable. Logistics considerations include packaging integrity to prevent contamination and oxidation during transit, especially for international shipments.
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