CN104646663A - Ag Cu coated powder preparation method - Google Patents
Ag Cu coated powder preparation method Download PDFInfo
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- CN104646663A CN104646663A CN201410755755.2A CN201410755755A CN104646663A CN 104646663 A CN104646663 A CN 104646663A CN 201410755755 A CN201410755755 A CN 201410755755A CN 104646663 A CN104646663 A CN 104646663A
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Abstract
The invention relates to the technical field of function materials and particularly relates to an Ag Cu coated powder preparation method. The method comprises the steps of step1, experiment materials and instruments; step2, synthesis of superfine Cu powder; step3, synthesis of Ag Cu coated powder. According to the method, superfine Cu powder is prepared through a liquid phase reduction method with polyvinyl pyrrolidone (PVP) serving as dispersing agents at the temperature of 70 DEG C by reacting the materials for 1h, and the prepared superfine Cu powder average particle size is about 200nm, and the sphericity is good. Vc is used as reducing agents, washed novel copper powder is coated with silver powder, dispersing agents are not needed, and the reaction is performed for 1h under the temperature of 70 DEG C. The prepared coated powder is good in appearance, the average particle size is about 250nm, and a compact coating layer is formed. The method is simple in equipment, easy to operate and applicable to industrial production.
Description
Technical field
The present invention relates to functional material technology of preparing material, be specifically related to a kind of preparation method of silver-bearing copper cladding powder.
Background technology
Along with the development of material science, yellow gold, due to characteristics such as its crystal property, array structure, mechanical performance, alloy cover layers, obtains the extensive favor of people.Silver and copper all have higher electric conductivity, are widely used in the every field such as catalysis, electric slurry, electromagnetic shielding.Silver is the resource that in the earth's crust, content is very rare, and cost is high, expensive, but its electric conductivity is excellent.But copper is a kind of relatively common and cheap metal material, but the electric conductivity of copper can not show a candle to silver, and heat endurance and non-oxidizability neither be fine.So comprehensive the two advantage, preparation silver
Copper-clad powder can not only keep the physical and chemical performance of copper core, also has good electric conductivity, high antioxidant and the heat endurance of clad silver simultaneously.Relative to single silver powder, this cladding powder greatly reduces cost.
Summary of the invention
The present invention is intended to propose a kind of method adopting liquid-phase reduction technique to prepare silver-bearing copper cladding powder.
Technical program of the present invention lies in:
A preparation method for silver-bearing copper cladding powder, adopts following steps:
Step 1: experiment material and instrument:
Copper sulphate (CuSO
4), silver nitrate (AgNO
3), polyvinylpyrrolidone (PVP), APES (QP-10), sorbitan monooleate APEO (Tween80), glucose (C
6h
12o
6h
2o), water and hydrazine (N
2h
4h
2o), ascorbic acid (Vc), NaOH (NaOH), absolute ethyl alcohol (C
2h
5oH), ammoniacal liquor (NH
3h
2o), deionized water (H
2o);
X-ray diffractometer, SEM, Flied emission transmission electron microscope.
Step 2: the synthesis of ultra-fine Cu powder:
Take 1.6g CuSO
4use excessive NH
3h
2o process obtains copper ammon solution; Take 1.98g C
6h
12o
6h
2o is dissolved in deionized water; Pour in 500mL there-necked flask after dispersant (3g PVP) is dissolved in deionized water, regulate solution ph to 13 with the NaOH of 6mol/L; After warming-in-water to 60 DEG C, in there-necked flask, drip pre-configured copper ammon solution and glucose solution, drop rate is 50/min simultaneously; After reaction 30min, then drip reducing agent 0.4,70 DEG C add thermal response 1h; After reaction terminates, naturally cool, with absolute ethanol washing, vacuum drying.
The synthesis of the coated Cu powder of step 3:Ag:
Take 0.85g AgNO
3, use excessive NH
3h
2o process obtains silver ammino solution; Take the ultra-fine Cu powder of 0.8g, be suspended in 100mL deionized water; Poured into by suspension in 500mL there-necked flask, by the NaOH adjust ph to 13 of 6mol/L, 40 DEG C add thermal agitation; In flask, drip pre-configured silver ammino solution, and drip reducing agent 0.2mL simultaneously; Drop rate is 50/min; 70 DEG C add thermal response 1h; After question response terminates, naturally cool, with absolute ethanol washing, vacuum drying, obtained silver-bearing copper cladding powder.
Preferably, described dropping reducing agent is N
2h
4h
2o, drop rate is 50/min.
Technique effect of the present invention is:
The present invention adopts liquid phase reduction, and with PVP as dispersant, temperature is 70 DEG C, and the superfine cupper powder average grain diameter that reaction 1h prepares is about 200nm, good sphericity.Utilize Vc as reducing agent, coated silver powder on brand-new copper powder after washing, without the need to dispersant, at 70 DEG C, react 1h.
The cladding powder pattern prepared is better, and average grain diameter is about 250nm, forms fine and close clad.The method equipment is simple, and is easy to operation, is applicable to industrial production.
Detailed description of the invention
A preparation method for silver-bearing copper cladding powder, adopts following steps:
Step 1: experiment material and instrument:
Copper sulphate (CuSO
4), silver nitrate (AgNO
3), polyvinylpyrrolidone (PVP), APES (QP-10), sorbitan monooleate APEO (Tween80), glucose (C
6h
12o
6h
2o), water and hydrazine (N
2h
4h
2o), ascorbic acid (Vc), NaOH (NaOH), absolute ethyl alcohol (C
2h
5oH), ammoniacal liquor (NH
3h
2o), deionized water (H
2o);
X-ray diffractometer, SEM, Flied emission transmission electron microscope.
Step 2: the synthesis of ultra-fine Cu powder:
Take 1.6g CuSO
4use excessive NH
3h
2o process obtains copper ammon solution; Take 1.98g C
6h
12o
6h
2o is dissolved in deionized water; Pour in 500mL there-necked flask after dispersant (3g PVP) is dissolved in deionized water, regulate solution ph to 13 with the NaOH of 6mol/L; After warming-in-water to 60 DEG C, in there-necked flask, drip pre-configured copper ammon solution and glucose solution, drop rate is 50/min simultaneously; After reaction 30min, then drip reducing agent 0.4,70 DEG C add thermal response 1h; After reaction terminates, naturally cool, with absolute ethanol washing, vacuum drying.
The synthesis of the coated Cu powder of step 3:Ag:
Take 0.85g AgNO
3, use excessive NH
3h
2o process obtains silver ammino solution; Take the ultra-fine Cu powder of 0.8g, be suspended in 100mL deionized water; Poured into by suspension in 500mL there-necked flask, by the NaOH adjust ph to 13 of 6mol/L, 40 DEG C add thermal agitation; In flask, drip pre-configured silver ammino solution, and drip reducing agent 0.2mL simultaneously; Drop rate is 50/min; 70 DEG C add thermal response 1h; After question response terminates, naturally cool, with absolute ethanol washing, vacuum drying, obtained silver-bearing copper cladding powder.
Wherein, dripping reducing agent is N
2h
4h
2o, drop rate is 50/min.
Claims (2)
1. a preparation method for silver-bearing copper cladding powder, is characterized in that: adopt following steps:
Step 1: experiment material and instrument:
Copper sulphate (CuSO
4), silver nitrate (AgNO
3), polyvinylpyrrolidone (PVP), APES (QP-10), sorbitan monooleate APEO (Tween80), glucose (C
6h
12o
6h
2o), water and hydrazine (N
2h
4h
2o), ascorbic acid (Vc), NaOH (NaOH), absolute ethyl alcohol (C
2h
5oH), ammoniacal liquor (NH
3h
2o), deionized water (H
2o);
X-ray diffractometer, SEM, Flied emission transmission electron microscope;
Step 2: the synthesis of ultra-fine Cu powder:
Take 1.6g CuSO
4use excessive NH
3h
2o process obtains copper ammon solution; Take 1.98g C
6h
12o
6h
2o is dissolved in deionized water; Pour in 500mL there-necked flask after dispersant (3g PVP) is dissolved in deionized water, regulate solution ph to 13 with the NaOH of 6mol/L; After warming-in-water to 60 DEG C, in there-necked flask, drip pre-configured copper ammon solution and glucose solution, drop rate is 50/min simultaneously; After reaction 30min, then drip reducing agent 0.4,70 DEG C add thermal response 1h; After reaction terminates, naturally cool, with absolute ethanol washing, vacuum drying;
The synthesis of the coated Cu powder of step 3:Ag:
Take 0.85g AgNO
3, use excessive NH
3h
2o process obtains silver ammino solution; Take the ultra-fine Cu powder of 0.8g, be suspended in 100mL deionized water; Poured into by suspension in 500mL there-necked flask, by the NaOH adjust ph to 13 of 6mol/L, 40 DEG C add thermal agitation; In flask, drip pre-configured silver ammino solution, and drip reducing agent 0.2mL simultaneously; Drop rate is 50/min; 70 DEG C add thermal response 1h; After question response terminates, naturally cool, with absolute ethanol washing, vacuum drying, obtained silver-bearing copper cladding powder.
2. as the preparation method of a claim 1 silver-bearing copper cladding powder, it is characterized in that: described dropping reducing agent is N
2h
4h
2o, drop rate is 50/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410755755.2A CN104646663A (en) | 2014-12-11 | 2014-12-11 | Ag Cu coated powder preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410755755.2A CN104646663A (en) | 2014-12-11 | 2014-12-11 | Ag Cu coated powder preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104646663A true CN104646663A (en) | 2015-05-27 |
Family
ID=53238586
Family Applications (1)
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|---|---|---|---|
| CN201410755755.2A Pending CN104646663A (en) | 2014-12-11 | 2014-12-11 | Ag Cu coated powder preparation method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104999076A (en) * | 2015-06-01 | 2015-10-28 | 浙江亚通焊材有限公司 | One-pot prepared silver covered copper nanometer powder with controllable shell thickness and preparation method of silver covered copper nanometer powder |
| CN105598468A (en) * | 2016-03-17 | 2016-05-25 | 中国科学院深圳先进技术研究院 | Preparation method of silver coated copper nanoparticles capable of being used for conductive ink |
| CN105776892A (en) * | 2016-01-29 | 2016-07-20 | 中北大学 | Magnetic Ag-plated glass bead and preparing method thereof |
| CN108176849A (en) * | 2017-12-12 | 2018-06-19 | 南京邮电大学 | A kind of silver coated copper nano-powder and its preparation method and application |
| CN108865326A (en) * | 2018-08-02 | 2018-11-23 | 河南科技大学 | A kind of carbosphere Kufil, modified lubricating grease and preparation method and application |
| CN115070055A (en) * | 2022-06-16 | 2022-09-20 | 安徽信息工程学院 | Liquid phase reduction preparation equipment of silver-copper coated powder |
-
2014
- 2014-12-11 CN CN201410755755.2A patent/CN104646663A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104999076A (en) * | 2015-06-01 | 2015-10-28 | 浙江亚通焊材有限公司 | One-pot prepared silver covered copper nanometer powder with controllable shell thickness and preparation method of silver covered copper nanometer powder |
| CN105776892A (en) * | 2016-01-29 | 2016-07-20 | 中北大学 | Magnetic Ag-plated glass bead and preparing method thereof |
| CN105776892B (en) * | 2016-01-29 | 2018-04-06 | 中北大学 | A kind of magnetic plating Ag glass microballoons and preparation method thereof |
| CN105598468A (en) * | 2016-03-17 | 2016-05-25 | 中国科学院深圳先进技术研究院 | Preparation method of silver coated copper nanoparticles capable of being used for conductive ink |
| CN108176849A (en) * | 2017-12-12 | 2018-06-19 | 南京邮电大学 | A kind of silver coated copper nano-powder and its preparation method and application |
| CN108865326A (en) * | 2018-08-02 | 2018-11-23 | 河南科技大学 | A kind of carbosphere Kufil, modified lubricating grease and preparation method and application |
| CN115070055A (en) * | 2022-06-16 | 2022-09-20 | 安徽信息工程学院 | Liquid phase reduction preparation equipment of silver-copper coated powder |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150527 |
|
| WD01 | Invention patent application deemed withdrawn after publication |