Protective liquid for preventing oxidation of copper powder, and preparation method and using method thereof

A technology of oxidation protection and protection solution, which is applied in chemical instruments and methods, compositions for inhibiting chemical changes, fibrous fillers, etc., can solve problems such as short protection period, and achieve the effects of convenient operation, strong activity and convenient preparation.

Inactive Publication Date: 2011-01-05
六安市晖润新材料有限公司
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  • Abstract
  • Description
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Problems solved by technology

This method requires fresh distilled water to be prepared and washed with distilled water. Although a layer of lipid protective film is formed on the surface of the treated copper...

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  • Protective liquid for preventing oxidation of copper powder, and preparation method and using method thereof

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Embodiment Construction

[0019] The protective solution for preventing copper powder oxidation and discoloration of the present invention comprises (1) 100-200 grams of benzotriazole BTA, (2) 50-100 milliliters of absolute ethanol; (3) 3-4% soap solution 80-120 ml.

[0020] The benzotriazole BTA is firstly dissolved in the ethanol solution, the BTA is completely dissolved in the absolute ethanol, and then the solution is dissolved in 3-4wt% soap liquid.

[0021] The copper powder to be treated is immersed in the protective solution of the technical formula of the present invention for anti-oxidation treatment, and after stirring for a certain period of time, the protected copper powder is obtained by dehydration, washing and drying. Among them, the washing is washed three times with ordinary tap water, and then put into vacuum drying after dehydration. For example:

[0022] An electrolytic copper powder mainly has a dendritic structure, the particle size is mostly concentrated around -250 mesh, and ...

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Abstract

The invention provides conveniently operated and prepared protecting liquid for preventing the oxidation and color change of copper powder, and a preparation method and a using method thereof. The preparation method comprises the following steps of: preparing solution from benzotriazole (BTA) and absolute ethyl alcohol according to a certain proportion; and dissolving the solution into 3 to 4 weight percent of soap solution to prepare the protective liquid. The using method comprises the following steps of: impregnating the copper powder to be treated into the protective liquid, and performing stirring, dehydration, washing and drying to obtain the protected copper powder. The protective liquid can remarkably improve the effect of preventing the oxidation and color change of the copper powder, and is convenient to prepare.

Description

technical field [0001] The invention relates to a protection liquid for preventing oxidation of copper powder, a manufacturing method and a using method thereof. technical background [0002] With the rapid development of society and technology in our country, the demand for copper powder is growing rapidly. my country's copper powder is mainly used in powder metallurgy. In addition, due to its inherent luster, low resistivity, and low price, metal copper powder is widely used in paint, conductive coating, and printing industries. However, due to the small particles and large specific surface area of ​​copper powder, it is easy to oxidize and change color in the air, resulting in low purity of processed copper, clear paint color, poor beautification and decoration, and unreliable and unstable performance of conductive coatings. Difference. In order to improve the anti-oxidation ability of copper powder, the work of preventing copper powder oxidation has been paid attentio...

Claims

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Application Information

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IPC IPC(8): C23F11/00C09C1/66C09K15/26B22F1/00
Inventor 苏朝晖
Owner 六安市晖润新材料有限公司
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