Copper Powder (Atomized Metal) - Weight: 1kg - By Inoxia

Product Information

Properly operating chemical fume hood designed for hazardous chemicals and having an average face velocity of at least 100 feet per minute.

With the exceptions that 0,66 kg of cupric oxide powder and 2,4 kg of 80-percent formic acid solution were used as starting materials and that the starting materials were mixed and stirred at 80 ° C 20 for hours, anhydrous copper formate crystals in an amount of 1,28 kg in same way as in example 1. The degree of thermal decomposition of the thus obtained anhydrous copper formate was practically 100%. The powder thus obtained, which was the product of thermal decomposition, showed a brown color, had an oxygen content of about 3%, and consisted of uniform nearly spherical primary particles having an average particle diameter of about 0,3 μm. The agglomerate particle diameter of the powder was measured (on average) after the powder was dispersed in water by the treatment with a mixer, and found to be about 15 μm. Highly pure, very fine 325 mesh irregular copper metal powder suitable for a range of applications including resin-casting (cold casting), decorative coatings and powder metallurgy.Accordingly, it is an object of the present invention to provide a method for producing a fine copper powder as described above. Source: A. Price and J. Oakley, "Factors in the Production of 90/10 Tin Bronze Compacts of Higher Density (7.49g/cm 3)," Powder Met. 8:201 (1965). The present invention relates to a process for producing a novel fine copper powder containing nearly spherical primary particles having an average particle diameter between 0,2 and 1 μm, a specific surface area between 5 and 0,5 m² / g, and a low tendency to agglomerate. The fine copper powder produced by the method of the present invention can be advantageously used as an electrically conductive filler for, for example, coating compositions, pastes and resins, as an antibacterial additive, and as a starting powder for powder metallurgy. This product is not classed as dangerous goods for transport and can be shipped to all destinations without restriction.

There is no definite relation between the physical properties of the brake material and its performance as a friction material. Further, there are so many intangibles that influence friction and wear that the selection of a P/M friction material is still empirical. Different copper powders vary based on the production method, purity, particle size, particle shape, apparent density, conductivity, color and flow rate. Therefore, the anhydrous copper formate used in the present invention is preferably one having a small amount of these compounds other than copper formate. A practical measure of this is that when a sample of anhydrous copper formate in an amount of 10 mg in a nitrogen or hydrogen gas atmosphere at a heating rate of 3 ° C / min. is heated, 90 weight percent or more of the sample are thermally decomposed within the temperature range of 160 to 200 ° C. It is preferred that the above be considered when the anhydrous copper formate is industrially synthesized for use in this invention. The Registry of Toxic Effects of Chemical Substances (RTECS) contains acute toxicity data for components in this product.The Registry of Toxic Effects of Chemical Substances (RTECS) contains tumorigenic and/or carcinogenic and/or neoplastic data for this substance.