CN106378448A - Silver coating surface modification method of nickel powder for circuit protection device material - Google Patents
Silver coating surface modification method of nickel powder for circuit protection device material Download PDFInfo
- Publication number
- CN106378448A CN106378448A CN201610833810.4A CN201610833810A CN106378448A CN 106378448 A CN106378448 A CN 106378448A CN 201610833810 A CN201610833810 A CN 201610833810A CN 106378448 A CN106378448 A CN 106378448A
- Authority
- CN
- China
- Prior art keywords
- silver
- nikel powder
- nickel powder
- powder
- nikel
- 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
Classifications
-
- 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
-
- 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
- B22F1/065—Spherical particles
Abstract
The invention discloses a silver coating surface modification method of conduction filling nickel powder for a circuit protection device material. Silver-coated nickel powder is prepared by dissolving silver nitrate and the nickel powder in an alcohol solvent and carrying out silver coating on the nickel powder through a photo-induced reduction reaction under irradiation of an ultraviolet lamp. The weather ability of a positive temperature coefficient heat-sensing device, made of the silver-coated nickel powder prepared by the silver coating surface modification method, for circuit protection is improved obviously. The silver coating surface modification method is simple in technology; the physical and chemical properties, such as oxidation resistance, of the nickel powder can be improved effectively, and the application scope of the nickel powder can be extended.
Description
Technical field
The present invention relates to circuit brake technical field is and in particular to a kind of nikel powder for circuit brake material
Silver-colored clad surface is modified.
Background technology
Fine Nickel Powder is widely used in the positive temperature coefficient temperature-sensitive device of circuit protection as conductive filler, and it has substantially
The advantage reducing resistivity.But because Fine Nickel Powder has the larger specific surface area of ratio, surface defect compares, and has thermodynamics
Unstability, so that the weatherability of positive heat-sensitive coefficients temperature-sensitive device reduces.Therefore carry out suitable surface to Fine Nickel Powder to change
Property, such as cladding cobalt, copper etc., Fine Nickel Powder can be overcome oxidizable, the shortcomings of easily reunion, thus being effectively improved and improving fine nickel
The physical and chemical performances such as the antioxidation of powder, expand the range of application of nikel powder.
Because can improve, in the appropriate silver of nikel powder Surface coating, the contact avoiding Fine Nickel Powder with air, improve fine nickel
The oxidation resistance of powder, modified Fine Nickel Powder is added in polymer as conductive filler, can effectively improve positive temperature
The weatherability of degree coefficient heat-sensitive device.But so far, for photoreduction met hod, super fine surface silver cladding be yet there are no
Report.
Content of the invention
For solving the deficiencies in the prior art, the present invention provides a kind of silver cladding table of the nikel powder for circuit brake material
Face is modified.
The technical scheme is that：A kind of nikel powder silver clad surface for circuit brake material is modified, silver bag
Covering nikel powder is chondritic, a diameter of 200 ± 30nm；Described silver cladding nikel powder is made up of following steps：
（1）Mol ratio is 1:4-4:1 silver nitrate and nikel powder are completely dissolved in alcohol solvent, strong agitation, are formed uniformly
Suspension；
（2）By suspension in the ultra violet lamp 1 ± 0.2min of 20W, dissolve color and Lycoperdon polymorphum Vitt is changed into from white；
（3）Filtration step（2）In reacted solution, the precipitate of generation is washed with deionized, then will be separated to
Precipitate is put 60 DEG C ± 1 DEG C and is incubated 8 ± 2 hours, obtains final product the silver cladding nikel powder effectively improving weatherability.
The mol ratio of described silver nitrate and nikel powder mixing is preferably 2:4.
The described modified weatherability for improving circuit keeper material of nikel powder silver clad surface.
Beneficial effects of the present invention：Fine Nickel Powder can reduce resistivity as conductive filler, carries out surface to Fine Nickel Powder
Modification, can improve in nikel powder coated with silver on surface and avoid the oxidation resistance of the contact that Fine Nickel Powder is with air and Fine Nickel Powder and expand
Big nikel powder range of application, can effectively improve the weatherability of positive temperature coefficient temperature-sensitive device.
Brief description
Fig. 1 is raw material nikel powder（Figure A）Silver cladding nikel powder with the embodiment of the present invention 2 preparation（Figure B）Scanning electron microscope
（SEM）Picture.
Fig. 2 is that the silver cladding nikel powder of the embodiment of the present invention 2 preparation makes the positive temperature coefficient heat sensor for circuit protection
Part V schemes.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
A kind of nikel powder silver clad surface for circuit brake material is modified, and silver cladding nikel powder is chondritic, directly
Footpath is 200 ± 30nm；Described silver cladding nikel powder is made up of following steps：
（1）Mol ratio is 1:4-4:1 silver nitrate and nikel powder are completely dissolved in alcohol solvent, strong agitation, are formed uniformly
Suspension；
（2）By suspension in the ultra violet lamp 1 ± 0.2min of 20W, dissolve color and Lycoperdon polymorphum Vitt is changed into from white；
（3）Filtration step（2）In reacted solution, the precipitate of generation is washed with deionized, then will be separated to
Precipitate is put 60 DEG C ± 1 DEG C and is incubated 8 ± 2 hours, obtains final product the silver cladding nikel powder effectively improving weatherability.
The mol ratio of described silver nitrate and nikel powder mixing is preferably 2:4.
The described modified weatherability for improving circuit keeper material of nikel powder silver clad surface.
Embodiment 1
Mol ratio is 1:4 silver nitrate and nikel powder are completely dissolved in alcohol solvent, strong agitation, formed all and suspension
Liquid；By suspension 20 W ultra violet lamp 1 ± 0.2 min, solution colour is changed into Lycoperdon polymorphum Vitt from white；Filter reacted molten
Liquid, the precipitate of generation is washed with deionized, and then the precipitate being separated to is put 60oC±1oCInsulation 8 ± 2 hours,
Obtain final product the silver cladding nikel powder effectively improving weatherability.Wherein said silver cladding nikel powder is chondritic, a diameter of 200 ± 30nm.
Embodiment 2
Mol ratio is 2:4 silver nitrate and nikel powder are completely dissolved in alcohol solvent, strong agitation, formed all and suspension
Liquid；By suspension 20 W ultra violet lamp 1 ± 0.2 min, solution colour is changed into Lycoperdon polymorphum Vitt from white；Filter reacted molten
Liquid, the precipitate of generation is washed with deionized, and then the precipitate being separated to is put 60oC±1oCInsulation 8 ± 2 hours,
Obtain final product the silver cladding nikel powder effectively improving weatherability.Wherein said silver cladding nikel powder is chondritic, a diameter of 200 ± 30nm.
The SEM of above-mentioned gained silver cladding nikel powder coats, as shown in figure 1, demonstrating silver, the structure that nikel powder does not change nikel powder,
Remain as chondritic.Fig. 2 is the positive temperature coefficient temperature-sensitive device V figure that silver cladding nikel powder makes for circuit protection.Result table
Bright, compared with pure nickel powder, the V-value of the positive temperature coefficient temperature-sensitive device made using the silver cladding nikel powder of photoreduction met hod preparation is obvious
Reduce so that the weatherability tool of circuit brake is significantly improved.
Embodiment 3
Mol ratio is 1:1 silver nitrate and nikel powder are completely dissolved in alcohol solvent, strong agitation, formed all and suspension
Liquid；By suspension 20 W ultra violet lamp 1 ± 0.2 min, solution colour is changed into Lycoperdon polymorphum Vitt from white；Filter reacted molten
Liquid, the precipitate of generation is washed with deionized, and then the precipitate being separated to is put 60oC±1oCInsulation 8 ± 2 hours,
Obtain final product the silver cladding nikel powder effectively improving weatherability.Wherein said silver cladding nikel powder is chondritic, a diameter of 200 ± 30nm.
Embodiment 4
Mol ratio is 4:2 silver nitrate and nikel powder are completely dissolved in alcohol solvent, strong agitation, formed all and suspension
Liquid；By suspension 20 W ultra violet lamp 1 ± 0.2 min, solution colour is changed into Lycoperdon polymorphum Vitt from white；Filter reacted molten
Liquid, the precipitate of generation is washed with deionized, and then the precipitate being separated to is put 60oC±1oCInsulation 8 ± 2 hours,
Obtain final product the silver cladding nikel powder effectively improving weatherability.Wherein said silver cladding nikel powder is chondritic, a diameter of 200 ± 30nm.
Embodiment 5
Mol ratio is 4:1 silver nitrate and nikel powder are completely dissolved in alcohol solvent, strong agitation, formed all and suspension
Liquid；By suspension 20 W ultra violet lamp 1 ± 0.2 min, solution colour is changed into Lycoperdon polymorphum Vitt from white；Filter reacted molten
Liquid, the precipitate of generation is washed with deionized, and then the precipitate being separated to is put 60oC±1oCInsulation 8 ± 2 hours,
Obtain final product the silver cladding nikel powder effectively improving weatherability.Wherein said silver cladding nikel powder is chondritic, a diameter of 200 ± 30nm.
Claims (3)
1. a kind of nikel powder silver clad surface for circuit brake material modified it is characterised in that：Silver cladding nikel powder is ball
Shape structure, a diameter of 200 ± 30nm；Described silver cladding nikel powder is made up of following steps：
（1）Mol ratio is 1:4-4:1 silver nitrate and nikel powder are completely dissolved in alcohol solvent, strong agitation, are formed uniformly
Suspension；
（2）By suspension in the ultra violet lamp 1 ± 0.2min of 20W, dissolve color and Lycoperdon polymorphum Vitt is changed into from white；
（3）Filtration step（2）In reacted solution, the precipitate of generation is washed with deionized, then will be separated to
Precipitate is put 60 DEG C ± 1 DEG C and is incubated 8 ± 2 hours, obtains final product the silver cladding nikel powder effectively improving weatherability.
2. a kind of nikel powder silver clad surface for circuit brake material according to claim 1 is modified, its feature
It is：The mol ratio of described silver nitrate and nikel powder mixing is preferably 2:4.
3. a kind of nikel powder silver clad surface for circuit brake material according to claim 1 is modified, its feature
It is：The described modified weatherability for improving circuit keeper material of nikel powder silver clad surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610833810.4A CN106378448B (en) | 2016-09-20 | 2016-09-20 | A kind of nickel powder silver clad surface for circuit brake material is modified |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610833810.4A CN106378448B (en) | 2016-09-20 | 2016-09-20 | A kind of nickel powder silver clad surface for circuit brake material is modified |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106378448A true CN106378448A (en) | 2017-02-08 |
| CN106378448B CN106378448B (en) | 2019-03-19 |
Family
ID=57936704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610833810.4A Expired - Fee Related CN106378448B (en) | 2016-09-20 | 2016-09-20 | A kind of nickel powder silver clad surface for circuit brake material is modified |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106378448B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019433A (en) * | 2010-12-11 | 2011-04-20 | 上海纳米技术及应用国家工程研究中心有限公司 | Method for preparing core-shell type organic/inorganic composite silver nano-wire |
| JP2011144441A (en) * | 2010-01-18 | 2011-07-28 | Namics Corp | Silver-coated nickel powder and method for producing the same |
| CN102505460A (en) * | 2011-09-30 | 2012-06-20 | 桂林理工大学 | Method for producing silver-carrying antibacterial sisal fibers |
| CN102672168A (en) * | 2012-01-06 | 2012-09-19 | 河南科技大学 | Preparation method for core-shell structural nickel-silver bimetallic powder |
| CN103476524A (en) * | 2011-04-12 | 2013-12-25 | 韩国原子力研究院 | Method for manufacturing metal nanoparticles having a core-shell structure with good oxidation stability |
| JP2014029010A (en) * | 2012-04-04 | 2014-02-13 | Nippon Steel & Sumikin Chemical Co Ltd | Complex nickel particle and method for producing the same |
| CN103816574A (en) * | 2014-02-18 | 2014-05-28 | 吴水林 | Preparation method of medical titanium alloy with antibacterial nano structure on surface |
| CN105161219A (en) * | 2015-09-28 | 2015-12-16 | 西安工程大学 | Preparation method for UV light-cured silver-coated nickel conductive slurry |
-
2016
- 2016-09-20 CN CN201610833810.4A patent/CN106378448B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011144441A (en) * | 2010-01-18 | 2011-07-28 | Namics Corp | Silver-coated nickel powder and method for producing the same |
| CN102019433A (en) * | 2010-12-11 | 2011-04-20 | 上海纳米技术及应用国家工程研究中心有限公司 | Method for preparing core-shell type organic/inorganic composite silver nano-wire |
| CN103476524A (en) * | 2011-04-12 | 2013-12-25 | 韩国原子力研究院 | Method for manufacturing metal nanoparticles having a core-shell structure with good oxidation stability |
| CN102505460A (en) * | 2011-09-30 | 2012-06-20 | 桂林理工大学 | Method for producing silver-carrying antibacterial sisal fibers |
| CN102672168A (en) * | 2012-01-06 | 2012-09-19 | 河南科技大学 | Preparation method for core-shell structural nickel-silver bimetallic powder |
| JP2014029010A (en) * | 2012-04-04 | 2014-02-13 | Nippon Steel & Sumikin Chemical Co Ltd | Complex nickel particle and method for producing the same |
| CN103816574A (en) * | 2014-02-18 | 2014-05-28 | 吴水林 | Preparation method of medical titanium alloy with antibacterial nano structure on surface |
| CN105161219A (en) * | 2015-09-28 | 2015-12-16 | 西安工程大学 | Preparation method for UV light-cured silver-coated nickel conductive slurry |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106378448B (en) | 2019-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107470609B (en) | A kind of preparation method of oxidation resistant copper nano-wire | |
| EP3360628B1 (en) | Uniform aspect ratio silver nanowires preparation method | |
| CN105081348B (en) | A kind of normal pressure one kettle way prepares the method without particle high-purity silver nano wire | |
| CN105268993B (en) | A method of preparing flaky nanometer silver powder | |
| CN104785794B (en) | A kind of uniform nano silver wire preparation method of draw ratio | |
| Ma et al. | Preparation and characterization of monodispersed PS/Ag composite microspheres through modified electroless plating | |
| CN108817377B (en) | Preparation method of conductive flaky silver-coated copper powder | |
| CN106495133A (en) | High heat conduction Flexible graphene method for manufacturing thin film | |
| CN108428494B (en) | Method for preparing high-performance nano silver wire transparent conductive film through microwave welding | |
| CN102683050B (en) | Preparation method of nano Ag-SnO2 electric contact composite | |
| CN107716944B (en) | The method that chemical method prepares nano-grade silver powder | |
| US20190054539A1 (en) | Preparation method for silver nanowires with uniform aspect ratio and nodes | |
| CN104261392B (en) | A kind of preparation method of the conductive graphene paper of borate ion crosslinking | |
| CN105575477A (en) | Method for improving conductivity of silver nanowire flexible and transparent conductive membrane | |
| CN105618734A (en) | Method for surface modification of flaky silver powder | |
| CN104259472B (en) | A kind of organic composite of superfine sheet copper powder and preparation method thereof | |
| CN107680707B (en) | A kind of composition metal nano wire of core-shell structure and the preparation method and application thereof | |
| Tang et al. | Fabrication of high-quality copper nanowires flexible transparent conductive electrodes with enhanced mechanical and chemical stability | |
| CN114453578A (en) | Modified copper powder, modification method thereof and conductive paste | |
| Lonne et al. | UV treatment of flexible copper nanowire mesh films for transparent conductor applications | |
| CN106378448A (en) | Silver coating surface modification method of nickel powder for circuit protection device material | |
| TW201729220A (en) | Method of fabricating high-conductivity thick-film copper paste coated with nano-silver for being sintered in the air | |
| TWI593728B (en) | Antioxidation conductive copper glue and preparation method thereof | |
| KR101303590B1 (en) | Complex conductive substrate and method of manufacturing thereof | |
| Gu et al. | Conductivity enhancement of silver nanowire networks via simple electrolyte solution treatment and solvent washing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190319 Termination date: 20190920 |