CN106694904A - Preparation method of highly dispersed micron order flake silver powder with large radius-thickness ratio - Google Patents
Preparation method of highly dispersed micron order flake silver powder with large radius-thickness ratio Download PDFInfo
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- CN106694904A CN106694904A CN201710079647.1A CN201710079647A CN106694904A CN 106694904 A CN106694904 A CN 106694904A CN 201710079647 A CN201710079647 A CN 201710079647A CN 106694904 A CN106694904 A CN 106694904A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/06—Metallic powder characterised by the shape of the particles
- B22F1/068—Flake-like particles
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Abstract
The invention provides a preparation method of highly dispersed micron order flake silver powder with a large radius-thickness ratio. The type of silver powder is prepared by performing reaction on a silver salt solution (as an auxiliary shape adjustor) comprising a surfactant, an ascorbic acid solution (as a reducer) and an acidic solution (as a primary shape adjustor) by taking water as a solution. By adjusting the reaction parameters, highly dispersed micron order flake silver powder with large radius-thickness ratio and the content of 80% or above is obtained in one step. According to the preparation method provided by the invention, the operation is simple, the reaction condition is mild the cost is low, the output of silver powder is high and the repeatability is good, a conventional ball-milling step is cut out, and the preparation method is suitable forscale production and can be used in the fields of conductive slurry, electric contact materials, conductive adhesives and the like.
Description
Technical field
The present invention relates to a kind of preparation method of the big radius-thickness ratio micro-order platy silver powder of high dispersive, and in particular to use liquid phase
Reducing process prepares micro-order platy silver powder, so as to substitute traditional mechanical attrition method, may be directly applied to electric slurry and micro- electricity
In subcomponent, belong to noble metal nanometer material preparing technical field.
Technical background
Silver powder as a kind of important noble metal powder, due to good conduction-heat conductivility and excellent chemistry
Stability, as conductor, resistance, the important conducting function material of media electronic slurry and be used widely, and consumption exists
Constantly increase.The performance of the structures shape material of material, under identical use environment, its performance has the silver powder of different-shape
Very big difference.Silver powder have flake silver powder and non-flake silver powder point.Wherein, flake silver powder connects due to there is line between silver powder particle
The contact of tactile or face contact, with larger contact surface, therefore, the non-flake silver powder of resistance ratio of flake silver powder is low, electric conductivity
It is stronger, therefore often turn into the important component of electric slurry as filler.With electronic product miniaturization, it is integrated, intelligent
The development of change trend, using flake silver powder, on the one hand can save silver powder consumption, on the other hand can reduce the thickness of coating,
Be conducive to the miniaturization of electronic component, vital effect is played to development in science and technology of future and utilization of resources.
At present, flake silver powder preparation method is a lot, mainly there is mechanical attrition method, light inducible, template, liquid phase reduction
With ultrasonic wave added method etc..Wherein liquid phase reduction is due to integrated operation technique simplicity, and input is small, and greatly, consume is few, and performance is good for output
One of and turn into preparation method most potential at present, for traditional product upgrading and new technology and the exploitation of new material, have
There is extremely important meaning.
Chinese patent literature CN102133645B discloses a kind of preparation side of environment-friendly micron order triangle silver strip
Method, the method by the way that silver nitrate oxidation solution is added dropwise in the reducing solution of glucose, then constant temperature 48-72h in 75-95 DEG C of temperature
Obtain micron order triangle silver strip.
Chinese patent literature CN102161103A discloses a kind of zigzag micron-stage sheet-like nano-silver powder, and the method passes through
P-phenylenediamine is added in benzene, 12-36h is stirred, suction filtration obtains p-phenylenediamine and is wrapped in flaky nanometer silver powder, its reaction
Static 2-24h obtains silver strip size for 10-30 μm.
Chinese patent literature CN102756131A discloses a kind of preparation method of micron order silver strip, and the method passes through nitric acid
It is micro- at 20 μm to adding derivant sulfuric acid or soluble sulphate solution and ascorbic acid reaction to obtain particle diameter in the silver-colored aqueous solution
Meter level silver strip.
Chinese patent literature CN102974837A discloses a kind of preparation method of flaky nanometer silver powder, the method preferable temperature
40-80 DEG C, silver strip in irregular shape is obtained in the silver salt solution containing surfactant and ferrous iron solution reaction.
Chinese patent literature CN104690286A discloses a kind of sheet and spherical mixing silver powder and preparation method thereof, the method
Silver nitrate solution containing the concentrated sulfuric acid is reduced by ascorbic acid and prepares micron silver strip and nanometer ping-pong ball.
It is serious that the method or course of reaction that prepare flake silver powder of above-mentioned report are cumbersome, the reaction time is long, product is reunited；
Or it is not friendly enough to environment using reagent；Or the flake silver powder average grain diameter for obtaining is more than 5 μm and particle diameter distribution heterogeneity,
Current high-resolution printing equipment cannot be advantageously applied to and the fast-developing demand of the miniaturization of products is adapted to.
The content of the invention
Present invention solves the technical problem that being a kind of the efficient fast of big radius-thickness ratio micro-order platy silver powder of high dispersive of offer
Fast preparation method, the micro-order platy silver powder prepared by the method has excellent dispersiveness and granular size homogeneity, and footpath
Thickness rate is in 50-100, single crystalline ultra thin.Especially its building-up process is simple, quick, subsequent treatment is easy and repeatability is high, so as to have
Beneficial to implementation industrialized production.
The technical scheme for realizing the object of the invention is a kind of preparation method of the big radius-thickness ratio micro-order platy silver powder of high dispersive,
By system pH under 0.5-4.0, the silver salt solution containing dispersant reacts with aqueous ascorbic acid and obtains.
The silver salt is one or more in silver nitrate, silver acetate, silver sulfate, silver perchlorate, silver orthophosphate.
The surfactant specifically includes citric acid, sodium citrate, polyvinylpyrrolidone, Tween-80, dodecyl
Sodium sulphate, Sodium Polyacrylate, polyethylene glycol, sorbierite, dodecyl sodium sulfate, polyvinyl alcohol, neopelex and
One or more in cetyl trimethylammonium bromide, gum arabic.
It is described acid for hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, perchloric acid, thiosulfuric acid, permanganic acid, tartaric acid, oxalic acid, formic acid,
In acetic acid, stearic acid, acrylic acid one or more.
It is 20-30 DEG C that the micro-order platy silver powder prepares reaction temperature.
The micro-order platy silver powder prepares the reaction time for 15-30min.
The micro-order platy silver powder prepares pH between 0.5-4.0.
The micro-order platy silver powder prepares drop rate 0.030-0.080mLs-1
It is 200-500rpm that the micro-order platy silver powder prepares mixing speed.
The rate in blocks of flake silver powder is more than 50% in the micro-order platy silver powder.
The piece footpath of flake silver powder is 1-5 μm in the micro-order platy silver powder, and piece thickness is 0.01-0.5 μm.
Brief description of the drawings
Fig. 1 is the stereoscan photograph of silver powder obtained in embodiment 1.
Fig. 2 is the stereoscan photograph of silver powder obtained in embodiment 2.
Fig. 3 is the stereoscan photograph of silver powder obtained in embodiment 3.
Fig. 4 is the stereoscan photograph of silver powder obtained in embodiment 4.
Specific embodiment
It is with reference to the embodiment content that the present invention is furture elucidated but of the invention in order to preferably explain the present invention
Content is not limited solely to the following examples, and all equivalent change or modifications done according to spirit of the invention should all be contained
Cover within protection scope of the present invention.
Embodiment 1
(1) 2.5g silver nitrates are dissolved in and silver nitrate solution is obtained in 50mL deionized waters, and dripped in the silver nitrate solution
Plus the concentrated nitric acid that mass fraction is 65% makes its pH value of solution be 0.5, obtains solution A；
(2) 5.2g ascorbic acid is dissolved in the deionized water of 50mL and ascorbic acid solution is obtained, and it is molten to the silver nitrate
The concentrated nitric acid that mass fraction is 65% is added dropwise in liquid makes its pH value of solution be 0.5, obtains mixed solution B；
(3) 0.3g Tween-80s are dissolved in 200mL deionized waters and Tween-80 solution is obtained, and in the silver nitrate solution
The concentrated nitric acid that mass fraction is 65% is added dropwise makes its pH value of solution be 0.5, obtains mixed solution C；
(4) at room temperature, mixed solution D is obtained to adding mixed solution A to be well mixed in mixed solution C while stirring；
(5) at room temperature, 20min is reacted to mixed solution D is added in mixed solution B while stirring；
(6) stop stirring, be centrifuged and washed with deionized water (4 times) and absolute ethyl alcohol (4 times), separate solid and liquid,
Corresponding product is obtained after drying；
(7) observation products therefrom (as shown in Figure 1) under a scanning electron microscope, flake silver powder about 90% in the silver powder,
Wherein, the average piece footpath of micro-order platy silver powder is 3.2 μm, and average piece thickness is 0.05 μm.
Embodiment 2
On the basis of embodiment 1, step (1), (2), (3) need to be only changed to：Acetic acid is added dropwise makes its pH value of solution be 0.5,
Remaining step is carried out according to embodiment 1.Product as shown in Fig. 2 flake silver powder accounts for 85% in the mixing silver powder, wherein, it is ultra-fine
The average piece footpath of flake silver powder is 3.8 μm, and average piece thickness is 0.08 μm.
Embodiment 3
On the basis of embodiment 2, step (1), (2), (3) need to be only changed to：Acetic acid is added dropwise makes its pH value of solution be 4.0,
Remaining step is carried out according to embodiment 2.Product as shown in figure 3, flake silver powder accounts for 70% in the mixing silver powder, wherein, it is ultra-fine
The average piece footpath of flake silver powder is 4.2 μm, and average piece thickness is 0.07 μm.
Embodiment 4
(1) 2.5g silver nitrates are dissolved in and silver nitrate solution is obtained in 50mL deionized waters, and dripped in the silver nitrate solution
Plus acetic acid makes its pH value of solution be 4.0, and mixed solution A is obtained；
(2) 5.2g ascorbic acid is dissolved in the deionized water of 50mL and ascorbic acid solution is obtained, and it is molten to the silver nitrate
Acetic acid is added dropwise in liquid makes its pH value of solution be 4.0, obtains mixed solution B；
(3) 0.3g gum arabics are dissolved in 200mL deionized waters and gum arabic solution is obtained, and to the silver nitrate
Acetic acid is added dropwise in solution makes its pH value of solution be 4.0, obtains mixed solution C；
(4) mixed solution C is added separately in mixed solution A and B for two parts by volume decile at room temperature, obtains mixing molten
Liquid D and E；
(5) at room temperature, 20min is reacted to mixed solution D is added in mixed solution E while stirring；
(6) stop stirring, be centrifuged and washed with deionized water (4 times) and absolute ethyl alcohol (4 times), separate solid and liquid,
Corresponding product is obtained after drying；
(7) observation products therefrom (as shown in Figure 4) under a scanning electron microscope, flake silver powder about 88% in the silver powder,
Wherein, the average piece footpath of micro-order platy silver powder is 1.5 μm, and average piece thickness is 0.13 μm.
Claims (9)
1. the preparation method of the big radius-thickness ratio micro-order platy silver powder of a kind of high dispersive, it is characterised in that comprise the following steps：
Step A：Mass concentration is prepared respectively for the silver salt solution and mass concentration of 20-60g/L are the Vitamin C of 80-125g/L
The volume of aqueous acid, wherein silver salt solution is 0.8-1.2 times of aqueous ascorbic acid volume；
Step B：By surfactant：The ratio of the mass ratio=0.07-0.15 of silver salt weighs surfactant, and is prepared
It is the aqueous solution of 1-3g/L into mass concentration, wherein, the volume of aqueous surfactant solution is the 3.8- of silver salt solution volume
4.2 times；
Step C：To in the silver salt solution, aqueous ascorbic acid and aqueous surfactant solution prepared in above-mentioned steps A and B
Acid solution is separately added into, above-mentioned pH value of solution is adjusted between 0.5-4.0, and aqueous surfactant solution is all added to silver salt water
In solution；
Step D：At room temperature according to drop rate 0.030-0.080mLs-1, stir speed (S.S.) 200-500rpm to step C prepare
Silver salt and surfactant mixed aqueous solution in add the aqueous ascorbic acid that step C prepares, continue stirring reaction
The big radius-thickness ratio micron order of high dispersive is obtained final product after 20min, reacted solution centrifugal or standing sedimentation separation, washing, dried process
Flake silver powder.
2. preparation method according to claim 1, it is characterised in that：The concentration of silver salt solution is 22-58g/ in step A
L, aqueous ascorbic acid concentration is 82-120g/L, and liquor capacity is than almost equal.
3. preparation method according to claim 1, it is characterised in that：In step B surfactant specifically include citric acid,
Sodium citrate, polyvinylpyrrolidone, polyvinyl alcohol, Tween-80, lauryl sodium sulfate, Sodium Polyacrylate, polyethylene glycol,
In sorbierite, dodecyl sodium sulfate, neopelex and cetyl trimethylammonium bromide, gum arabic one
Plant or several.
4. preparation method according to claim 1, it is characterised in that：In step C acid-specific include hydrochloric acid, sulfuric acid, nitric acid,
One kind or several in phosphoric acid, perchloric acid, thiosulfuric acid, permanganic acid, tartaric acid, oxalic acid, formic acid, acetic acid, stearic acid, acrylic acid
Kind.
5. the preparation method of the big radius-thickness ratio micro-order platy silver powder of high dispersive according to claim 1 and 2, its feature exists
In：Reaction temperature is 20-30 DEG C, drop rate 0.030-0.080mLs-1, the stir speed (S.S.) 200-500rpm reaction time be
15-30min。
6. the preparation method of the big radius-thickness ratio micro-order platy silver powder of high dispersive according to claim 1 and 2, its feature exists
In：Gained silver powder is washed with deionized water or ethanol or methyl alcohol in step D.
7. the preparation method of the big radius-thickness ratio micro-order platy silver powder of high dispersive according to claim 1 and 2, its feature exists
In：Gained silver powder drying temperature is 30-90 DEG C in step D.
8. the preparation method of the big radius-thickness ratio ultra thin single crystalline micro-order platy silver powder of high dispersive according to claim 1 and 2, its
It is characterised by：The big radius-thickness ratio ultra thin single crystalline micro-order platy silver powder content of high dispersive is more than 50%.
9. the preparation of the big radius-thickness ratio ultra thin single crystalline micro-order platy silver powder of obtained high dispersive according to claim 1 and 2
Method, it is characterised in that：The piece footpath of flake silver powder is 1-5 μm, and piece thickness is 0.01-0.5 μm.
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Cited By (19)
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|---|---|---|---|---|
| CN107377989A (en) * | 2017-06-21 | 2017-11-24 | 天津宝兴威科技股份有限公司 | A kind of preparation method of flaky nanometer silver powder |
| CN107716944A (en) * | 2017-10-31 | 2018-02-23 | 长春黄金研究院 | The method that chemical method prepares nano-grade silver powder |
| CN108555312A (en) * | 2018-04-19 | 2018-09-21 | 湖南省国银新材料有限公司 | A kind of preparation method of flake silver powder |
| CN108714700A (en) * | 2018-06-07 | 2018-10-30 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七二研究所） | A kind of preparation method of the highly crystalline type silver powder of monodisperse and its silver powder obtained |
| CN109215829A (en) * | 2018-09-03 | 2019-01-15 | 苏州晶银新材料股份有限公司 | A kind of front electrode silver slurry used for solar batteries, silver powder and preparation method thereof |
| CN109550933A (en) * | 2018-12-04 | 2019-04-02 | 苏州市贝特利高分子材料股份有限公司 | A kind of superthin section silver and its chemical synthesis process |
| CN109773211A (en) * | 2019-03-26 | 2019-05-21 | 南京工业大学 | Preparation method for coating nano silver particles on surface of flake silver powder |
| CN110076349A (en) * | 2019-06-13 | 2019-08-02 | 江苏汇诚医疗科技有限公司 | A kind of environment-friendly preparation method thereof of petal-shaped Nano silver piece |
| CN110153441A (en) * | 2019-06-06 | 2019-08-23 | 河南金渠银通金属材料有限公司 | A kind of flake silver powder and preparation method thereof prepared by chemical reduction method |
| CN110355380A (en) * | 2019-08-13 | 2019-10-22 | 山东建邦胶体材料有限公司 | A kind of preparation method of hexagonal flake micron crystalline substance silver powder |
| CN110860700A (en) * | 2019-12-09 | 2020-03-06 | 成都市天甫金属粉体有限责任公司 | Preparation method of flaky nano silver powder |
| CN111590086A (en) * | 2020-06-02 | 2020-08-28 | 江西贝特利新材料有限公司 | Ultrathin flake silver powder with smooth surface and preparation method thereof |
| CN113976903A (en) * | 2021-10-18 | 2022-01-28 | 昆明理工大学 | Method for preparing micron-sized flaky silver powder through continuous reduction |
| CN114101698A (en) * | 2021-11-10 | 2022-03-01 | 电子科技大学 | Preparation method and application of flaky overlapping silver powder |
| CN114985758A (en) * | 2022-07-29 | 2022-09-02 | 长春黄金研究院有限公司 | Preparation method of flake silver powder |
| CN115502408A (en) * | 2022-09-21 | 2022-12-23 | 四川工程职业技术学院 | Preparation method of flower-like silver powder |
| CN116100038A (en) * | 2022-12-28 | 2023-05-12 | 北京有研粉末新材料研究院有限公司 | Submicron flake silver powder and preparation method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200004A (en) * | 2006-12-14 | 2008-06-18 | 中国科学院理化技术研究所 | Chemical preparation method of flaky micron silver powder |
| CN101569935A (en) * | 2009-06-05 | 2009-11-04 | 中国乐凯胶片集团公司 | Preparation method for flaky micro-silver powder |
| CN101823153A (en) * | 2009-03-06 | 2010-09-08 | 五邑大学 | Technology for preparing flake nano silver with overlarge area |
| CN103008677A (en) * | 2011-09-27 | 2013-04-03 | 中国钢铁股份有限公司 | Micron flaky silver grains and production method thereof |
| CN103506630A (en) * | 2012-06-29 | 2014-01-15 | 中国科学院理化技术研究所 | Preparation method of flaky silver powder with ultralow apparent density |
| CN105127448A (en) * | 2015-09-25 | 2015-12-09 | 合肥工业大学 | Room-temperature preparation method for nano silver sheet with ultra-large area |
| CN105290420A (en) * | 2012-11-29 | 2016-02-03 | 江苏理工学院 | Method for preparing flaky nano silver powder |
-
2017
- 2017-02-14 CN CN201710079647.1A patent/CN106694904A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200004A (en) * | 2006-12-14 | 2008-06-18 | 中国科学院理化技术研究所 | Chemical preparation method of flaky micron silver powder |
| CN101823153A (en) * | 2009-03-06 | 2010-09-08 | 五邑大学 | Technology for preparing flake nano silver with overlarge area |
| CN101569935A (en) * | 2009-06-05 | 2009-11-04 | 中国乐凯胶片集团公司 | Preparation method for flaky micro-silver powder |
| CN103008677A (en) * | 2011-09-27 | 2013-04-03 | 中国钢铁股份有限公司 | Micron flaky silver grains and production method thereof |
| CN103506630A (en) * | 2012-06-29 | 2014-01-15 | 中国科学院理化技术研究所 | Preparation method of flaky silver powder with ultralow apparent density |
| CN105290420A (en) * | 2012-11-29 | 2016-02-03 | 江苏理工学院 | Method for preparing flaky nano silver powder |
| CN105127448A (en) * | 2015-09-25 | 2015-12-09 | 合肥工业大学 | Room-temperature preparation method for nano silver sheet with ultra-large area |
Cited By (23)
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| CN107377989A (en) * | 2017-06-21 | 2017-11-24 | 天津宝兴威科技股份有限公司 | A kind of preparation method of flaky nanometer silver powder |
| CN107716944A (en) * | 2017-10-31 | 2018-02-23 | 长春黄金研究院 | The method that chemical method prepares nano-grade silver powder |
| CN107716944B (en) * | 2017-10-31 | 2019-10-08 | 长春黄金研究院有限公司 | The method that chemical method prepares nano-grade silver powder |
| CN108555312A (en) * | 2018-04-19 | 2018-09-21 | 湖南省国银新材料有限公司 | A kind of preparation method of flake silver powder |
| CN108714700A (en) * | 2018-06-07 | 2018-10-30 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七二研究所） | A kind of preparation method of the highly crystalline type silver powder of monodisperse and its silver powder obtained |
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| CN109550933B (en) * | 2018-12-04 | 2021-06-29 | 苏州市贝特利高分子材料股份有限公司 | Ultrathin silver sheet and chemical synthesis method thereof |
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| CN109773211A (en) * | 2019-03-26 | 2019-05-21 | 南京工业大学 | Preparation method for coating nano silver particles on surface of flake silver powder |
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| CN110860700A (en) * | 2019-12-09 | 2020-03-06 | 成都市天甫金属粉体有限责任公司 | Preparation method of flaky nano silver powder |
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| CN113976903A (en) * | 2021-10-18 | 2022-01-28 | 昆明理工大学 | Method for preparing micron-sized flaky silver powder through continuous reduction |
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| CN115502408A (en) * | 2022-09-21 | 2022-12-23 | 四川工程职业技术学院 | Preparation method of flower-like silver powder |
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