Micro-nano copper powder and preparation method thereof

A micro-nano, copper powder technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the performance of the reduction process is difficult to control well, the preparation repeatability is not ideal, and the product is conductive. impact, etc.
CN106513696AActive Publication Date: 2017-03-22GUANGZHOU QIANSHUN IND MATERIAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGZHOU QIANSHUN IND MATERIAL
Publication Date
2017-03-22

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Abstract

The invention discloses micro-nano copper powder and a preparation method thereof. The preparation method comprises the following steps that compounds containing copper are prepared into a solution, and a system A is obtained; pH conditioning agents, additives and reducing agents are added to the system A, and a system B is obtained and reacts at 50-100 DEG C; and filtration, washing and drying are conducted after reacting, and the micro-nano copper powder is obtained. In the system B, the molarity of the compounds containing copper is 0.001-4 mol / L, the concentration of hydroxyl ion (OH-) is 10<-4>-20 mol / L, the mass concentration of the additives is 0-40%, and the molar ratio of the compounds containing copper to the reducing agents is 1:0.1-100. According to the preparation method, the effective control over the morphology and the size of the micro-nano copper powder is achieved, and the mass content of the impurity phases in the prepared copper powder can be controlled below 0.3%; and in addition, the preparation method further has the advantages that the reaction process is easy to control, and the selected reducing agents are moderate in reducibility, non-toxic, and environmentally friendly.
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Description

technical field

[0001] The invention belongs to the field of copper powder preparation, in particular to a micronano copper powder and a preparation method thereof. Background technique

[0002] Micro-nano copper powder is fuchsia or maroon ultrafine particles. Due to the characteristics of surface interface effect, small size effect and quantum size effect, it has many physical and chemical properties that conventional copper materials do not have. Chemistry and other aspects show great application prospects, and are widely used in lubrication, electronic information, medicine, biological filters and other fields.

[0003] For example, ultrafine copper powder can be used in thick film pastes to replace precious metals. Thick film paste is the basis of thick film technology and is widely used in the manufacture of resistors, multilayer ceramic capacitors and hybrid integrated circuits. Thick film paste is composed of superfine and well-dispersed metal powder, glass powder ...

Claims

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