Overview
Silver flake powder is a finely divided form of metallic silver, characterized by its flake-like morphology. It is widely utilized in industries requiring high electrical conductivity, such as electronics and conductive adhesives. The flake shape provides a larger surface area compared to spherical particles, enhancing its performance in applications like coatings and printed electronics. Silver flake powder is produced through chemical or mechanical processes, ensuring controlled particle size and purity. Its unique properties make it indispensable in advanced technological applications, including flexible circuits and RFID tags. The powder is also valued for its antimicrobial properties, though this is a secondary application.
Physical and Chemical Properties
Silver flake powder exhibits exceptional electrical conductivity (approximately 6.3 × 10^7 S/m) and thermal conductivity (429 W/m·K), making it ideal for high-performance electronic applications. Its flake morphology ensures better particle-to-particle contact, improving conductivity in composite materials. The powder is chemically stable under normal conditions but reacts with sulfur compounds, forming tarnish. It is insoluble in water and organic solvents but dissolves readily in nitric acid, forming silver nitrate. The high reflectivity of silver flakes also makes them useful in optical coatings and mirrors.
Main Applications
Silver flake powder is predominantly used in the electronics industry for manufacturing conductive inks, pastes, and adhesives. These materials are essential for printed circuit boards (PCBs), flexible electronics, and solar cells. The powder's high conductivity ensures efficient signal transmission and low energy loss. In addition to electronics, silver flakes are employed in coatings for electromagnetic interference (EMI) shielding and as catalysts in chemical reactions. Their antimicrobial properties are leveraged in medical devices and textiles, though this application is less common in industrial settings.
Safety and Storage
While silver flake powder is not highly toxic, prolonged exposure can cause argyria, a condition characterized by skin discoloration. Inhalation of fine particles should be avoided, and appropriate personal protective equipment (PPE), such as gloves and masks, should be used during handling. Storage requires a cool, dry environment, away from oxidizing agents and sulfur-containing compounds. Containers should be airtight to prevent moisture absorption and tarnishing. Proper labeling and segregation from incompatible materials are essential for safe storage.
B2B Procurement Guide
When procuring silver flake powder, prioritize suppliers with certifications such as ISO 9001 to ensure quality consistency. Key specifications to verify include purity (typically 99.9% or higher), particle size distribution, and surface area. Bulk purchases often attract discounts, but consider storage limitations and shelf life. Request samples for testing conductivity and compatibility with your application. Establish long-term contracts with reliable suppliers to mitigate price volatility, especially given silver's commodity market fluctuations.
Related Manufacturers
- 主营：氯化镧、锆产品、钴产品、稀土盐类
- 主营：偶联剂
- 主营：漂白剂、脱色剂、正丁醇、酸度调节、低温脱硝剂
- 主营：硫酸镁、氟硅酸钠、草酸、硼酸、硼砂、柠檬酸铵、氯化钾、尿素
- 主营：溶剂油 D系列溶剂油、航空煤油取暖油燃料油、乙二醇二醋酸酯、化学试剂、乙二醇丁醚、聚甲氧基二甲醚、过氯乙烯树脂、高氯化聚乙烯、氯化橡胶、二乙二醇丁醚、亚硝酸钙、正丁醇、异丁醇、异丙醇、碳酸二甲酯、碳酸二乙酯、甲基丙烯酸甲酯、硫酸锆、硫酸锌、硝酸铝、硝酸铁、硝酸铜、一二三乙醇胺、苯酚、白油、乙酸乙酯、醋酸甲酯
- 主营：香蕉水、洗枪水、脱脂剂、金属除油剂、白电油、工业酒精、去渍油、四氯乙烯、天那水、脱漆剂、无味煤油、石油醚、无水乙醇、铝合金清洗剂、甲醇、二氯甲烷、防锈剂、不锈钢清洗剂、二甲基甲酰胺DMF
- 主营：多聚甲醛、正硅酸乙酯28 40、正十二烷、二甲苯、四氢呋喃、液体丁腈橡胶、乙二醛、四氯乙烯、三氯乙烯、环己酮、环己胺、二甲基甲酰胺、二甲基乙酰胺、航空煤油、石油醚、糠醛、亚氯酸钠、铬酸酐、顺酐、保险粉、无水乙醇、异丙醇、二氯甲烷、醋酸乙酯、醋酸甲酯
- 主营：脱霉剂、干燥剂、氯化镁、漂白剂、苹果酸、活性炭、甲酸钠、硫酸钾、碳酸锶、氢氧化铝、防火涂料、泥凝固剂、碳酸氢钠、一水柠檬酸、超细凹凸棒、一水硫酸锌、猫砂用原料、营养强化剂、磷酸二氢铵、酸度调节剂、无水白色铝粉、土壤作物改良剂
- 主营：偶联剂
- 主营：三元酸、二聚酸、太古油、金属催化剂、三乙醇胺、三乙醇胺油酸皂、油酸、三乙醇胺硼酸酯、十八胺、石油磺酸钠、石油磺酸钡、环烷酸、十二胺、工业级妥尔油、单油酸酯聚氧乙、妥尔油脂肪酸、聚醚胺、司盘80、吐温80、杀菌剂
- 主营：120号溶剂油、航空煤油、异构十二烷、260号溶剂油、二氯甲烷、三氯乙烯、四氯乙烯、正十四烷、甲基丙烯酸缩水甘油酯、丙烯酸、碳酸二甲酯、60号全精炼石蜡、顺酐、苯酐、80号微晶蜡、甲基苯骈三氮唑、甲基丙烯酸、二月桂酸二丁基锡、精萘、硫脲、二茂铁、莫卡、邻苯二甲酸二辛酯、抗氧剂BHT501、亚磷酸
- 主营：COD检测仪、水质检测仪、多参数水质检测仪、水质重金属检测仪、红外测油仪、BOD测定仪、大气采样器、粉尘检测仪、红外分光测油仪、氨氮检测仪、氨氮测定仪、水质自动采样器、COD消解仪、粉尘浓度检测仪、多参数水质分析仪、COD测定仪、移动电源、BOD检测仪、多参数水质测定仪、便携式水质检测仪、便携式水质测定仪、便携式明渠流量计、硫化物酸化吹气仪、颗粒物采样器、空气微生物采样器
- 主营：定香剂、氧化铅、浮选油、氧化铋、氟化铝、氟化镁、洗涤剂、异丙醇、漂粉精、漂白粉、白僵菌、乙酸钡、氟化钙、水杨酸、松醇油、碳酸钡、醋酸钡、95福美钠、苯丙乳液、三乙二醇、鱼虾养殖、单乙醇胺、三乙醇胺、氯偏乳液、快干水泥
- 主营：离子液体、5-二甲基吡唑、咪唑、铜铁试剂、催化剂、阻燃剂、正丁醇锆、四氟硼酸锂、香兰基丁醚、氟化物、全氟辛基三甲氧基硅烷、丙酮肟、双酚E型氰酸酯、叔丁基乙烯基醚、钯碳催化剂、钛硅分子筛、硫酸烟酰苯胺、丙酮缩氨基硫脲
- 主营：防酶剂、表面活性剂、次氯酸钙、福美钠、蛋白胨、氟化氢钾、氟化钠、氟化钾、浮选油