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Preparation method of two-dimensional feathery copper powder under ammonia condition

A feather-like, copper powder technology, applied in the field of metal materials and powders, can solve the problems of electrolytic copper powder production constraints, relatively low production efficiency, etc., to achieve preservation and follow-up research, narrow particle size distribution range, and high purity Effect

Active Publication Date: 2013-11-20
UNIV OF SCI & TECH BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The copper powder produced by electrolytic method has excellent performance, but the relative production efficiency is relatively low, and the waste liquid must be treated before discharge, so that the production of electrolytic copper powder is subject to certain restrictions

Method used

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  • Preparation method of two-dimensional feathery copper powder under ammonia condition
  • Preparation method of two-dimensional feathery copper powder under ammonia condition
  • Preparation method of two-dimensional feathery copper powder under ammonia condition

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Embodiment

[0024] The prepared electrolyte is added to the electrolytic cell, the cathode is deoxygenated by nitrogen gas, the temperature of the bath is heated to the temperature of the electrolyte at 20-75 DEG C, and the copper powder is electrolyzed by 0.6-5V DC. The specific electrolysis conditions and the morphology of the obtained copper powder are shown in Table 1 (the additives are cetyl pyridine bromide, isopropyl myristate, sodium dodecyl benzene sulfonate, isooctyl phenol polyoxyethylene ether, One of Tween, sodium polystyrene sulfonate, lauramide propyl hydroxysultaine, decyl glycoside, triethanolamine and urotropine).

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Abstract

The invention discloses a preparation method of two-dimensional feathery copper powder under an ammonia condition, and belongs to the technical field of metal materials and powder. The copper powder prepared by the method is regular and complete feathery copper powder, has an obvious trunk and multiple levels of branch structures; each level of branch and the former level form an angle of about 60 degrees; the first level of branch grows forwards relative to the trunk; the branches more than the first level grow backwards relative to the trunk. An electrolyte comprises the following components: 0.005-0.50mol / L copper sulfate, 0.05-0.20mol / L ammonium sulfate, 0.10-2.0mol / L ammonia water, 0-1g / L additive and the balance of water. Electrolysis is carried out under the conditions that the direct current is 0.6-5.0V and the temperature is 20-75 DEG C. The copper powder on a cathode is treated by virtue of ultrasonic removal, cleaning, filtering and vacuum drying and then the light purplish-red feathery copper powder is obtained. The obtained copper powder is complete and single in shape, uniform in granularity, good in dispersibility and high in purity; the preparation process is safe and environmentally-friendly, and is simple in operating procedure and low in cost.

Description

Technical field [0001] The invention belongs to the technical field of metal materials and powders, and provides a method for preparing two-dimensional feather-like copper powder. Background technique [0002] Copper powder is one of the basic raw materials of the powder metallurgy industry, and it is also one of the largest non-ferrous metal powders produced and consumed in my country. It plays an irreplaceable role in modern industry. Because copper and its alloy powders have excellent thermal conductivity, electrical conductivity, corrosion resistance, and non-magnetic properties, combined with good surface finish, they are widely used in the production of various conductive materials, friction materials, diamond products and bearings, making them in It has been widely used in household appliances, automobiles, electronic communications and other fields. [0003] Many properties of copper powder, including particle size, bulk density, fluidity, oxidation resistance, specific su...

Claims

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Application Information

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IPC IPC(8): C25C5/02
Inventor 李建强张晓雷越许佳佳王可伟刘小琳陈辰
Owner UNIV OF SCI & TECH BEIJING
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