CN102133636A - Method for preparing anti-migration flaky silver coated copper powder - Google Patents
Method for preparing anti-migration flaky silver coated copper powder Download PDFInfo
- Publication number
- CN102133636A CN102133636A CN201110056802.0A CN201110056802A CN102133636A CN 102133636 A CN102133636 A CN 102133636A CN 201110056802 A CN201110056802 A CN 201110056802A CN 102133636 A CN102133636 A CN 102133636A
- Authority
- CN
- China
- Prior art keywords
- copper powder
- silver
- coated copper
- water
- migration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 78
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 59
- 239000004332 silver Substances 0.000 title claims abstract description 59
- 238000013508 migration Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000007787 solid Substances 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 12
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000725 suspension Substances 0.000 claims abstract description 12
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 229910001961 silver nitrate Inorganic materials 0.000 claims abstract description 6
- 239000008367 deionised water Substances 0.000 claims description 17
- 238000002360 preparation method Methods 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 11
- 229910021641 deionized water Inorganic materials 0.000 claims description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 claims description 6
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 6
- 239000008103 glucose Substances 0.000 claims description 6
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 claims description 6
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 5
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 claims description 5
- 239000000376 reactant Substances 0.000 claims description 5
- 229910000162 sodium phosphate Inorganic materials 0.000 claims description 5
- 239000001488 sodium phosphate Substances 0.000 claims description 5
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 5
- 230000003750 conditioning effect Effects 0.000 claims description 4
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 4
- PTVDYARBVCBHSL-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu] PTVDYARBVCBHSL-UHFFFAOYSA-N 0.000 claims description 2
- IKTXPEUEHIYXND-UHFFFAOYSA-N silver nitrate hydrate Chemical compound O.[Ag+].[O-][N+]([O-])=O IKTXPEUEHIYXND-UHFFFAOYSA-N 0.000 claims description 2
- 239000004020 conductor Substances 0.000 abstract description 9
- 239000002002 slurry Substances 0.000 abstract description 9
- 230000005012 migration Effects 0.000 abstract description 8
- 230000007935 neutral effect Effects 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 229910000510 noble metal Inorganic materials 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- -1 silver ions Chemical class 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000010129 solution processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The invention provides a method for preparing anti-migration flaky silver coated copper powder, which comprises the following steps of: performing immersion cleaning on flaky copper powder to prepare copper powder suspension; mixing the copper powder suspension and silver nitrate solution, stirring at the temperature of between 40 and 65 DEG C, adding a reducing agent A, adding a reducing agent B after stirring, and stirring; performing liquid-solid separation on the reaction solution to obtain silver coated copper powder; washing the silver coated copper powder by using water till the water is neutral and colorless; and performing filtration and drying to obtain the anti-migration flaky silver coated copper powder. The method has simple process, convenience in operation and low equipment investment; the obtained anti-migration flaky silver coated copper powder has the characteristics of good electric conductivity, high adhesive force, strong anti-migration performance and the like; the silver migration defect of silver conductor slurry is overcome; and the cost of the conductor slurry is reduced.
Description
Technical field
The present invention relates to a kind of preparation method of anti-migration sheet silver-coated copper powder, belong to electronic material, functional material and powder body material scientific domain.
Background technology
In the technology of preparing of electric slurry, the preparation of conductive phase metal dust is crucial, does not have good metal dust just not have good electric slurry.For conductor paste, conductive phase based on noble metal powders such as platinum, palladium, gold and silver, wherein is most widely used with silver conductive paste mostly, and consumption is also maximum.In recent years, owing to rising violently of noble metal price, cost of sizing agent increases; On the other hand, the silver migration is the shortcoming that silver paste self exists, and can not satisfy the requirement of high-performance electronic components and parts.Therefore around the novel conductive powder that reduces cost, seeks function admirable, replace noble metal to prepare electric slurry with base metal having become the electric slurry developing direction.
Continuous development along with electronic technology, more device is installed in requirement on more and more littler space, but the greatest problem that runs into is the metal migration, especially silver-colored migration will make the insulaion resistance between the adjacent conductor descend, leakage current increases, and is serious even have short circuit, electric arc, medium breakdown phenomenon to take place.According to the literature, the metal migration is the one of the main reasons of many microcircuit generation catastrophic failures.It has become electronic product march toward miniaturization, highly integrated a great problem.Therefore how to overcome the migration short circuit problem of silver-colored conductive material, perhaps improve other composite conducting material electric conductivity, overcoming silver migration shortcoming is the main direction of studying of compound-type conducting material.
Conducting electricity very well of copper, low price is the desirable substitution material of silver.But because the chemical property of superfine cupper powder is more active, easily oxidation brings great difficulty for the large-scale production of copper powder.Be the oxidation resistance that improves copper powder in recent years, successively adopt methods such as boric acid (the cruel or boron organic salt of boric acid) solution-treated, phosphate solution processing and coating to carry out many trials and exploration both at home and abroad.Wherein reliable with the method for silver-coated copper powder, think very promising, become the emphasis of research.Silver-coated copper powder is studied, produced in the U.S., Korea S, Japan in succession, and become the production monopoly enterprise of global silver-coated copper powder.Domestic progress is comparatively slow owing to silver-coated copper powder production craft step and influence factor complexity, and silver-coated copper powder major part in the market is an imported product.In existing silver-coated copper powder patent and document, just more to silver-coated copper powder preparation method and performance study, to the structure of silver coating, the anti-migration performance of silver-coated copper powder slurry does not appear in the newspapers.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of strong anti-migration sheet silver-coated copper powder, be used for production polymer conductor slurry feedstock, realize by following technical proposal.
A kind of preparation method of anti-migration sheet silver-coated copper powder is characterized in that through following each step:
(1) getting flake copper, is that 5% dilute sulfuric acid embathes 1～3 minute to the oxide of removing the copper powder surface with mass concentration, is washed with water to neutrality again;
(2) step (1) gained flake copper water is pressed liquid-solid ratio 1:4～5, fully stir, be mixed with copper powder suspension;
(3) water dissolving silver nitrate is mixed with the liquor argenti nitratis ophthalmicus that mass concentration is 1.4～2.2g/L;
(4) with step (2) gained copper powder suspension and step (3) gained liquor argenti nitratis ophthalmicus by volume 1 ︰ 5～15 mix, and stirred 1～30 minute down for 40～65 ℃ in bath temperature; Add reducing agent A again, stirred 5～60 minutes; Add reducing agent B at last, stirred 30～90 minutes;
(5) reactant liquor with step (4) carries out liquid-solid separation, obtains silver-coated copper powder; It is colourless for neutrality to water to wash silver-coated copper powder again with water;
(6) silver-coated copper powder and the water with step (5) filters, and places 30～60 ℃ to dry 2～6 hours down solid, promptly obtains anti-migration sheet silver-coated copper powder.
The preparation of described liquor argenti nitratis ophthalmicus is with low amounts of water silver nitrate to be dissolved, and adds the pH conditioning agent while stirring in solution, and after just dissolving to the white precipitate that generates, after two of amounts, adding entry to liquor argenti nitratis ophthalmicus concentration again is 1.4～2.2g/L.
Described reducing agent A be concentration be in the formaldehyde, hydrazine hydrate, glucose, inferior sodium phosphate of 0.5～4.5 g/L one or more.
Described reducing agent B be concentration be in the formaldehyde, hydrazine hydrate, glucose, inferior sodium phosphate of 0.5～3.5 g/L one or more.
Described pH conditioning agent is that concentration is the ammoniacal liquor of 0.1～1.5 g/L.
Described water is deionized water.
The present invention compares with known technology has following advantage and effect: technical process of the present invention is simple, and is easy to operate, and equipment investment is little.The present invention is the reducing agent that adds two or more in preparation silver-coated copper powder process, reducing power according to reducing agent, the time chien shih silvering that control adds be the network structure deposition and copper powder show-through, solved the silver migration shortcoming of silver conductive paste, reduce the conductor paste cost.Have on the structure with known technology production sheet silver-coated copper powder silver powder and to distinguish, anti-migration sheet silver-coated copper powder has following advantage:
(1) good conductivity: the network structure silvering, better with other silver-coated copper powder of identical silver content than electric conductivity;
(2) high adhesion force: but the network structure silvering has the fluid permeability, and the resin in the slurry is easy to penetrate netted, and the sheet silver-coated copper powder is fixed on matrix surface, has solved the key technical problem of poor adhesive force;
(3) strong anti-migration performance: flake copper surface deposition silvering is that network structure and copper powder are show-through, the existence of copper has suppressed the dissolving of silver in the silver-coated copper powder anode, concentration of silver ions reduces, and makes its sinking speed and dendritic growth on negative electrode slack-off, makes it have strong anti-migration performance.
The specific embodiment
Embodiment 1
(1) getting flake copper, is that 5% dilute sulfuric acid embathes 1 minute to the oxide of removing the copper powder surface with mass concentration, spends deionised water again to neutral;
(2) step (1) gained flake copper is pressed liquid-solid ratio 1:5 with deionized water, fully stir, be mixed with copper powder suspension;
(3) use the deionized water dissolving silver nitrate, and to add concentration while stirring in solution be that after two of amounts, adding entry to liquor argenti nitratis ophthalmicus concentration again was 1.4g/L after ammoniacal liquor to the white precipitate that generates of 0.1g/L just dissolved;
(4) with step (2) gained copper powder suspension and step (3) gained liquor argenti nitratis ophthalmicus by volume 1 ︰ 10 mix, and stirred 20 minutes down for 65 ℃ in bath temperature; Add the formaldehyde that concentration is 4.5 g/L again, stirred 5 minutes; Add the formaldehyde that concentration is 0.5g/L at last, stirred 90 minutes;
(5) reactant liquor with step (4) carries out liquid-solid separation, obtains silver-coated copper powder; It is colourless for neutrality to water to spend the deionised water silver-coated copper powder again;
(6) silver-coated copper powder and the deionized water with step (5) filters, and places 50 ℃ to dry 6 hours down solid, promptly obtains anti-migration sheet silver-coated copper powder.
Gained microporous sheet type silver powder average-size is 10 microns, apparent density 0.68 gram per centimeter
3, tap density 1.45 gram per centimeters
3
Embodiment 2
(1) getting flake copper, is that 5% dilute sulfuric acid embathes 2 minutes to the oxide of removing the copper powder surface with mass concentration, spends deionised water again to neutral;
(2) step (1) gained flake copper is pressed liquid-solid ratio 1:4 with deionized water, fully stir, be mixed with copper powder suspension;
(3) use the deionized water dissolving silver nitrate, and to add concentration while stirring in solution be that after two of amounts, adding entry to liquor argenti nitratis ophthalmicus concentration again was 2.2g/L after ammoniacal liquor to the white precipitate that generates of 1.0 g/L just dissolved;
(4) with step (2) gained copper powder suspension and step (3) gained liquor argenti nitratis ophthalmicus by volume 1 ︰ 5 mix, and stirred 30 minutes down for 55 ℃ in bath temperature; Add glucose and ortho phosphorous acid mixed solution that concentration is 0.5g/L again, stirred 40 minutes; Add the hydrazine hydrate that concentration is 2.5 g/L at last, stirred 30 minutes;
(5) reactant liquor with step (4) carries out liquid-solid separation, obtains silver-coated copper powder; It is colourless for neutrality to water to spend the deionised water silver-coated copper powder again;
(6) silver-coated copper powder and the deionized water with step (5) filters, and places 60 ℃ to dry 2 hours down solid, promptly obtains anti-migration sheet silver-coated copper powder.
Gained microporous sheet type silver powder average-size is 12 microns, apparent density 0.82 gram per centimeter
3, tap density 1.60 gram per centimeters
3
Embodiment 3
(1) getting flake copper, is that 5% dilute sulfuric acid embathes 3 minutes to the oxide of removing the copper powder surface with mass concentration, spends deionised water again to neutral;
(2) step (1) gained flake copper is pressed liquid-solid ratio 1:4 with deionized water, fully stir, be mixed with copper powder suspension;
(3) use the deionized water dissolving silver nitrate, and to add concentration while stirring in solution be that after two of amounts, adding entry to liquor argenti nitratis ophthalmicus concentration again was 1.8g/L after ammoniacal liquor to the white precipitate that generates of 1.5 g/L just dissolved;
(4) with step (2) gained copper powder suspension and step (3) gained liquor argenti nitratis ophthalmicus by volume 1 ︰ 15 mix, and stirred 1 minute down for 40 ℃ in bath temperature; Add formaldehyde and hydrazine hydrate mixed solution that concentration is 3.0g/L again, stirred 60 minutes; Add glucose and inferior sodium phosphate mixed solution that concentration is 3.5 g/L at last, stirred 60 minutes;
(5) reactant liquor with step (4) carries out liquid-solid separation, obtains silver-coated copper powder; It is colourless for neutrality to water to spend the deionised water silver-coated copper powder again;
(6) silver-coated copper powder and the deionized water with step (5) filters, and places 30 ℃ to dry 4 hours down solid, promptly obtains anti-migration sheet silver-coated copper powder.
Gained microporous sheet type silver powder average-size is 11.0 microns, apparent density 0.75 gram per centimeter
3, tap density 1.48 gram per centimeters
3
Claims (6)
1. one kind resists the preparation method who moves the sheet silver-coated copper powder, it is characterized in that through following each step:
(1) getting flake copper, is that 5% dilute sulfuric acid embathes 1～3 minute to the oxide of removing the copper powder surface with mass concentration, is washed with water to neutrality again;
(2) step (1) gained flake copper water is pressed liquid-solid ratio 1:4～5, fully stir, be mixed with copper powder suspension;
(3) water dissolving silver nitrate is mixed with the liquor argenti nitratis ophthalmicus that mass concentration is 1.4～2.2g/L;
(4) with step (2) gained copper powder suspension and step (3) gained liquor argenti nitratis ophthalmicus by volume 1 ︰ 5～15 mix, and stirred 1～30 minute down for 40～65 ℃ in bath temperature; Add reducing agent A again, stirred 5～60 minutes; Add reducing agent B at last, stirred 30～90 minutes;
(5) reactant liquor with step (4) carries out liquid-solid separation, obtains silver-coated copper powder; It is colourless for neutrality to water to wash silver-coated copper powder again with water;
(6) silver-coated copper powder and the water with step (5) filters, and places 30～60 ℃ to dry 2～6 hours down solid, promptly obtains anti-migration sheet silver-coated copper powder.
2. preparation method according to claim 1, it is characterized in that: the preparation of described step (3) liquor argenti nitratis ophthalmicus is with low amounts of water silver nitrate to be dissolved, and in solution, add the pH conditioning agent while stirring, after extremely the white precipitate that generates just dissolves, after two of amounts, adding entry to liquor argenti nitratis ophthalmicus concentration again is 1.4～2.2g/L.
3. preparation method according to claim 1 is characterized in that: in the described step (4) reducing agent A be concentration be in the formaldehyde, hydrazine hydrate, glucose, inferior sodium phosphate of 0.5～4.5 g/L one or more.
4. preparation method according to claim 1 is characterized in that: in the described step (4) reducing agent B be concentration be in the formaldehyde, hydrazine hydrate, glucose, inferior sodium phosphate of 0.5～3.5 g/L one or more.
5. preparation method according to claim 1 and 2 is characterized in that: described water is deionized water.
6. preparation method according to claim 2 is characterized in that: described pH conditioning agent is that concentration is the ammoniacal liquor of 0.1～1.5 g/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100568020A CN102133636B (en) | 2011-03-10 | 2011-03-10 | Method for preparing anti-migration flaky silver coated copper powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100568020A CN102133636B (en) | 2011-03-10 | 2011-03-10 | Method for preparing anti-migration flaky silver coated copper powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102133636A true CN102133636A (en) | 2011-07-27 |
| CN102133636B CN102133636B (en) | 2012-11-21 |
Family
ID=44293639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100568020A Expired - Fee Related CN102133636B (en) | 2011-03-10 | 2011-03-10 | Method for preparing anti-migration flaky silver coated copper powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102133636B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424736A (en) * | 2011-11-28 | 2012-04-25 | 兰州石化职业技术学院 | Preparation method for decorative silver-coated copper anticorrosion conductive coating |
| CN103785828A (en) * | 2014-02-25 | 2014-05-14 | 朱晓云 | Method for preparing silver-coated copper powder through light induction |
| CN105149575A (en) * | 2015-10-23 | 2015-12-16 | 乐山新天源太阳能科技有限公司 | Preparation method of silver coated copper powder |
| CN105355541A (en) * | 2015-10-23 | 2016-02-24 | 乐山新天源太阳能科技有限公司 | Solar cell recycling method |
| CN109530681A (en) * | 2018-12-12 | 2019-03-29 | 深圳市绚图新材科技有限公司 | Preparation method of silver-coated copper powder with self-stripping film for resisting oxidation |
| CN114311916A (en) * | 2021-12-16 | 2022-04-12 | 济宁市海富电子科技有限公司 | Shielding film and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110523973A (en) * | 2019-09-21 | 2019-12-03 | 深圳市百柔新材料技术有限公司 | Surface coats the sheet silver-bearing copper powder of fine and close silver layer, preparation method and applications |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5945158A (en) * | 1996-01-16 | 1999-08-31 | N.V. Union Miniere S.A. | Process for the production of silver coated particles |
| CN1403233A (en) * | 2002-10-10 | 2003-03-19 | 武汉大学 | Silver-plated copper powder and its prepn process |
| CN1472367A (en) * | 2003-06-16 | 2004-02-04 | 昆明理工恒达科技有限公司 | Preparing method for conductive composite bronze powder and composite bronze conductive sizing agent |
| CN1876282A (en) * | 2006-07-07 | 2006-12-13 | 清华大学 | Chemical method for silver coating on copper powder surface |
| CN101032750A (en) * | 2007-04-06 | 2007-09-12 | 深圳市危险废物处理站 | Method of producing sheet shaped silver-plated copper powder |
| CN101088670A (en) * | 2007-07-06 | 2007-12-19 | 西安交通大学 | Prepn process of composite Cu-Ag metal powder in core-shell structure |
| JP4223754B2 (en) * | 2002-07-19 | 2009-02-12 | 三井金属鉱業株式会社 | Silver-coated copper powder and method for producing the same |
-
2011
- 2011-03-10 CN CN2011100568020A patent/CN102133636B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5945158A (en) * | 1996-01-16 | 1999-08-31 | N.V. Union Miniere S.A. | Process for the production of silver coated particles |
| JP4223754B2 (en) * | 2002-07-19 | 2009-02-12 | 三井金属鉱業株式会社 | Silver-coated copper powder and method for producing the same |
| CN1403233A (en) * | 2002-10-10 | 2003-03-19 | 武汉大学 | Silver-plated copper powder and its prepn process |
| CN1472367A (en) * | 2003-06-16 | 2004-02-04 | 昆明理工恒达科技有限公司 | Preparing method for conductive composite bronze powder and composite bronze conductive sizing agent |
| CN1876282A (en) * | 2006-07-07 | 2006-12-13 | 清华大学 | Chemical method for silver coating on copper powder surface |
| CN101032750A (en) * | 2007-04-06 | 2007-09-12 | 深圳市危险废物处理站 | Method of producing sheet shaped silver-plated copper powder |
| CN101088670A (en) * | 2007-07-06 | 2007-12-19 | 西安交通大学 | Prepn process of composite Cu-Ag metal powder in core-shell structure |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424736A (en) * | 2011-11-28 | 2012-04-25 | 兰州石化职业技术学院 | Preparation method for decorative silver-coated copper anticorrosion conductive coating |
| CN103785828A (en) * | 2014-02-25 | 2014-05-14 | 朱晓云 | Method for preparing silver-coated copper powder through light induction |
| CN103785828B (en) * | 2014-02-25 | 2015-09-30 | 昆明贵信凯科技有限公司 | The method of silver-coated copper powder is prepared in photoinduction |
| CN105149575A (en) * | 2015-10-23 | 2015-12-16 | 乐山新天源太阳能科技有限公司 | Preparation method of silver coated copper powder |
| CN105355541A (en) * | 2015-10-23 | 2016-02-24 | 乐山新天源太阳能科技有限公司 | Solar cell recycling method |
| CN109530681A (en) * | 2018-12-12 | 2019-03-29 | 深圳市绚图新材科技有限公司 | Preparation method of silver-coated copper powder with self-stripping film for resisting oxidation |
| CN114311916A (en) * | 2021-12-16 | 2022-04-12 | 济宁市海富电子科技有限公司 | Shielding film and preparation method thereof |
| CN114311916B (en) * | 2021-12-16 | 2024-03-29 | 济宁市海富电子科技有限公司 | Shielding film and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102133636B (en) | 2012-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102133636B (en) | Method for preparing anti-migration flaky silver coated copper powder | |
| CN102950283B (en) | Preparation method for superfine silver plating copper powder used for electronic paste | |
| CN103469182B (en) | Palladium-free chemical copper-plating method on graphite nanosheet surface | |
| CN103658637B (en) | A kind of method of electrolytic preparation dendroid fine copper powder | |
| CN106925774B (en) | A kind of preparation method of silver-coated copper powder | |
| CN102554222B (en) | Preparation method of silver-coated copper composite powders | |
| CN107737949B (en) | Silver-coated copper powder and preparation method thereof | |
| CN106498467B (en) | A kind of preparation method of ultra-thin carrier copper foil that stablizing stripping | |
| CN105688935B (en) | A kind of preparation method of Pt/Cu Ni catalyst and its method and the application of catalytic oxidation of alcohol | |
| CN101029409B (en) | Pretreatment and pretreatment solution for direct porous metallizing printing IC board | |
| CN102328076A (en) | Preparation method of silver coated copper powder for electronic slurry | |
| CN108624907A (en) | Nonmetal basal body efficient catalytic electrode and preparation method thereof | |
| CN101774025A (en) | Preparation method of silver-plated copper powder | |
| CN107331437A (en) | Graphene low-temperature solidified silver paste compound and preparation method thereof | |
| CN106086837A (en) | A kind of preparation method of antioxidation silver-plated copper powder | |
| CN107020374B (en) | A kind of Ti3SiC2The preparation method of/Cu composite conductive powder | |
| CN103252505B (en) | A kind of preparation method of silver-plated copper powder | |
| CN103194769B (en) | A kind of electrolyzer and method thereof reclaiming high purity copper from discarded circuit board | |
| CN103691965A (en) | Preparation method for copper/silver heterojunction nano-particles | |
| CN108070886B (en) | A kind of Preparation method and use of bimetallic Cu-Bi electro-catalysis denitrification electrode | |
| CN103611933B (en) | A kind of sonochemistry efficiently prepares the method for nickel coated copper composite powder | |
| CN101560674A (en) | Method and device for preparing copper powder by intensified electrolysis | |
| CN102896322A (en) | Preparation method for nano-copper with oxidation resistance and dispersibility | |
| CN110636693A (en) | Method for electroplating graphene-metal composite material coating by using complex pulse, PCB and motor | |
| CN103128275B (en) | A kind of anti-oxidation method of superfine cupper powder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20150310 |
|
| EXPY | Termination of patent right or utility model |