CN106493388A - A kind of preparation method of electromagnetic screen coating filler - Google Patents
A kind of preparation method of electromagnetic screen coating filler Download PDFInfo
- Publication number
- CN106493388A CN106493388A CN201610989480.8A CN201610989480A CN106493388A CN 106493388 A CN106493388 A CN 106493388A CN 201610989480 A CN201610989480 A CN 201610989480A CN 106493388 A CN106493388 A CN 106493388A
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- China
- Prior art keywords
- added
- copper
- ratio
- edta
- copper powder
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Classifications
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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
-
- 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
- B22F1/17—Metallic particles coated with metal
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
Abstract
The invention discloses a kind of preparation method of electromagnetic screen coating filler, including：(1) the chelating agent EDTA or ethylenediamine for accounting for copper sulfate mass ratio 80 95% is added in copper-bath, by ascorbic acid:Copper sulfate mol ratio is 1:The ratio of (1 2), ascorbic acid is added in the copper sulfate mixed solution, is reacted at least 1 hour, is obtained copper powder；(2) silver nitrate is pressed:EDTA mol ratios 1:The ratio of (1 2), silver nitrate solution is added in EDTA, is heated to 35 50 DEG C of reaction at least 20min；(3) copper powder is added in above-mentioned reactant liquor, is stirred at least 20min, is obtained silver-plated copper powder.The copper powder that the present invention is obtained, its particle diameter are 1 10 μm, smooth surface, and less, electric conductivity is excellent for silver-plated rear change in size, it is adaptable to which electromagnetic screen coating is used.
Description
Technical field
A kind of the present invention relates to technical field of coatings, more particularly to preparation method of electromagnetic screen coating filler.
Background technology
With the high speed development of computer and network technologies, people enter " information age ", and electromagnetic wave is used as transmission letter
The carrier of breath comes into household electrical appliance, communication, computer and information equipment, electric tool, aerospace industry, science and technology, medical science etc.
The every field of social life.Various electronic products all adopt engineering plastic section as shell, and engineering plastics are crossed almost to electromagnetism
It is " transparent ", this electromagnetic environment allowed in the confined space unprecedentedly deteriorates, brings a series of social problem and environment to ask
Topic.Such as electromagnetic interference, the harm that electromagnetic information is divulged a secret and electromagnetic radiation is brought to health.
In order to eliminate electromagnetic interference and electromagnetic radiation, it is necessary to carry out electromagnetic shielding process to which.The method of electromagnetic shielding has：
L conductive filler is kneaded with resin, makes conductive plasticss in cabinet molding by ().The electric conductivity of this plastics and conduction
The species of filler is relevant with property, but conduction fills out the processing characteristics that the addition that trembles has a strong impact on plastics, causes which to be difficult to make again
Miscellaneous shape, and the shield effectiveness of current conductive plastic enclosure is typically not ideal.(2) cover one layer in frosting to lead
Electrolemma, concrete grammar have：Electrically-conducting paint, metal sputtering, vacuum metal aluminize, electroplate or chemical plating metal film, pastes metal film
Deng.
Wherein, electrically-conducting paint is because which is easy to use, effect is good and be used widely.And in electrically-conducting paint, its gold
The performance of category filler, plays vital effect.Silver is one of wide variety of raw material in electrically-conducting paint, but due to its price
Higher, limit its use range.
Content of the invention
It is an object of the invention to proposing a kind of preparation method of electromagnetic screen coating filler, its filler for preparing
There is the excellent capability of electromagnetic shielding of comparison for coating, and the consumption of silver can be reduced.
It is that the present invention is employed the following technical solutions up to this purpose：
A kind of preparation method of electromagnetic screen coating filler, including：
(1) the chelating agent EDTA or ethylenediamine for accounting for copper sulfate mass ratio 80-95% is added in copper-bath, by anti-bad
Hematic acid:Copper sulfate mol ratio is 1:(1-2) ratio, ascorbic acid is added in the copper sulfate mixed solution, reaction at least 1
Hour, obtain copper powder；
(2) silver nitrate is pressed:EDTA mol ratios 1:(1-2) ratio, silver nitrate solution is added in EDTA, 35- is heated to
50 DEG C of reaction at least 20min；
(3) copper powder is added in above-mentioned reactant liquor, is stirred at least 20min, is obtained silver-plated copper powder.
The copper powder that the present invention is obtained, its particle diameter are 1-10 μm, and smooth surface, silver-plated rear change in size are little, electric conductivity
Excellent, it is adaptable to which that electromagnetic screen coating is used.
Specific embodiment
Technical scheme is further illustrated below by specific embodiment.
Embodiment 1
A kind of preparation method of electromagnetic screen coating filler, including：
(1) the chelating agent EDTA or ethylenediamine for accounting for copper sulfate mass ratio 80% is added in copper-bath, by Vitamin C
Acid:Copper sulfate mol ratio is 1:1 ratio, ascorbic acid is added in the copper sulfate mixed solution, is reacted at least 1 hour,
Obtain copper powder；
(2) silver nitrate is pressed:EDTA mol ratios 1:1 ratio, silver nitrate solution is added in EDTA, is heated to 35 DEG C of reactions
At least 20min；
(3) copper powder is added in above-mentioned reactant liquor, is stirred at least 20min, is obtained silver-plated copper powder.
Embodiment 2
A kind of preparation method of electromagnetic screen coating filler, including：
(1) the chelating agent EDTA or ethylenediamine for accounting for copper sulfate mass ratio 95% is added in copper-bath, by Vitamin C
Acid:Copper sulfate mol ratio is 1:2 ratio, ascorbic acid is added in the copper sulfate mixed solution, is reacted at least 1 hour,
Obtain copper powder；
(2) silver nitrate is pressed:EDTA mol ratios 1:2 ratio, silver nitrate solution is added in EDTA, is heated to 50 DEG C of reactions
At least 20min；
(3) copper powder is added in above-mentioned reactant liquor, is stirred at least 20min, is obtained silver-plated copper powder.
Embodiment 3
A kind of preparation method of electromagnetic screen coating filler, including：
(1) the chelating agent EDTA or ethylenediamine for accounting for copper sulfate mass ratio 90% is added in copper-bath, by Vitamin C
Acid:Copper sulfate mol ratio is 1:1.25 ratio, ascorbic acid is added in the copper sulfate mixed solution, and reaction at least 1 is little
When, obtain copper powder；
(2) silver nitrate is pressed:EDTA mol ratios 1:1.25 ratio, silver nitrate solution is added in EDTA, 45 DEG C are heated to
Reaction at least 20min；
(3) copper powder is added in above-mentioned reactant liquor, is stirred at least 20min, is obtained silver-plated copper powder.
Claims (1)
1. a kind of preparation method of electromagnetic screen coating filler, including：
(1) the chelating agent EDTA or ethylenediamine for accounting for copper sulfate mass ratio 80-95% is added in copper-bath, by Vitamin C
Acid:Copper sulfate mol ratio is 1:(1-2) ratio, ascorbic acid is added in the copper sulfate mixed solution, and reaction at least 1 is little
When, obtain copper powder；
(2) silver nitrate is pressed:EDTA mol ratios 1:(1-2) ratio, silver nitrate solution is added in EDTA, 35-50 DEG C is heated to
Reaction at least 20min；
(3) copper powder is added in above-mentioned reactant liquor, is stirred at least 20min, is obtained silver-plated copper powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610989480.8A CN106493388A (en) | 2016-11-10 | 2016-11-10 | A kind of preparation method of electromagnetic screen coating filler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610989480.8A CN106493388A (en) | 2016-11-10 | 2016-11-10 | A kind of preparation method of electromagnetic screen coating filler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106493388A true CN106493388A (en) | 2017-03-15 |
Family
ID=58323875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610989480.8A Pending CN106493388A (en) | 2016-11-10 | 2016-11-10 | A kind of preparation method of electromagnetic screen coating filler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106493388A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128308A (en) * | 2013-03-06 | 2013-06-05 | 东南大学 | Method for preparing compact silver-coated copper powder by using one pot method |
| US20140030345A1 (en) * | 2011-02-03 | 2014-01-30 | Amal Ayoub | Surface-Modified Heavy Metal Nanoparticles, Compositions And Uses Thereof |
| CN103785828A (en) * | 2014-02-25 | 2014-05-14 | 朱晓云 | Method for preparing silver-coated copper powder through light induction |
| US20150079414A1 (en) * | 2013-09-17 | 2015-03-19 | Oci Company Ltd. | Method for preparing multilayer metal complex having excellent surface properties |
| CN104449239A (en) * | 2014-12-18 | 2015-03-25 | 四川环碳科技有限公司 | Nitrogen-doped graphene composited electromagnetic shielding type electricity conductive primer and preparation method thereof |
| CN104530873A (en) * | 2014-12-30 | 2015-04-22 | 西安泰力松新材料股份有限公司 | Copper-based electromagnetic shielding coating and preparation method thereof |
| CN105127449A (en) * | 2015-10-20 | 2015-12-09 | 陈键 | Method for preparing copper powder with silver-plated surface |
-
2016
- 2016-11-10 CN CN201610989480.8A patent/CN106493388A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140030345A1 (en) * | 2011-02-03 | 2014-01-30 | Amal Ayoub | Surface-Modified Heavy Metal Nanoparticles, Compositions And Uses Thereof |
| CN103128308A (en) * | 2013-03-06 | 2013-06-05 | 东南大学 | Method for preparing compact silver-coated copper powder by using one pot method |
| US20150079414A1 (en) * | 2013-09-17 | 2015-03-19 | Oci Company Ltd. | Method for preparing multilayer metal complex having excellent surface properties |
| CN103785828A (en) * | 2014-02-25 | 2014-05-14 | 朱晓云 | Method for preparing silver-coated copper powder through light induction |
| CN104449239A (en) * | 2014-12-18 | 2015-03-25 | 四川环碳科技有限公司 | Nitrogen-doped graphene composited electromagnetic shielding type electricity conductive primer and preparation method thereof |
| CN104530873A (en) * | 2014-12-30 | 2015-04-22 | 西安泰力松新材料股份有限公司 | Copper-based electromagnetic shielding coating and preparation method thereof |
| CN105127449A (en) * | 2015-10-20 | 2015-12-09 | 陈键 | Method for preparing copper powder with silver-plated surface |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170315 |